annotate rust/hg-core/src/dirstate_tree/status.rs @ 48454:473af5cbc209

rhg: Add support for `rhg status --copies` Copy sources are collected during `status()` rather than after the fact like in Python, because `status()` takes a `&mut` exclusive reference to the dirstate map (in order to potentially mutate it for directory mtimes) and returns `Cow<'_, HgPath>` that borrow the dirstate map. Even though with `Cow` only some shared borrows remain, the still extend the same lifetime of the initial `&mut` so the dirstate map cannot be borrowed again to access copy sources after the fact: https://doc.rust-lang.org/nomicon/lifetime-mismatch.html#limits-of-lifetimes Additionally, collecting copy sources during the dirstate tree traversal that `status()` already does avoids the cost of another traversal or other lookups (though I haven?t benchmarked that cost). Differential Revision: https://phab.mercurial-scm.org/D11899
author Simon Sapin <simon.sapin@octobus.net>
date Fri, 10 Dec 2021 16:18:58 +0100
parents 000130cfafb6
children 4afb9627dc77
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 use crate::dirstate::entry::TruncatedTimestamp;
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2 use crate::dirstate::status::IgnoreFnType;
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3 use crate::dirstate::status::StatusPath;
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4 use crate::dirstate_tree::dirstate_map::BorrowedPath;
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5 use crate::dirstate_tree::dirstate_map::ChildNodesRef;
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6 use crate::dirstate_tree::dirstate_map::DirstateMap;
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7 use crate::dirstate_tree::dirstate_map::NodeData;
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8 use crate::dirstate_tree::dirstate_map::NodeRef;
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9 use crate::dirstate_tree::on_disk::DirstateV2ParseError;
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10 use crate::matchers::get_ignore_function;
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11 use crate::matchers::Matcher;
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12 use crate::utils::files::get_bytes_from_os_string;
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13 use crate::utils::files::get_path_from_bytes;
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14 use crate::utils::hg_path::HgPath;
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15 use crate::BadMatch;
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16 use crate::DirstateStatus;
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17 use crate::EntryState;
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18 use crate::HgPathBuf;
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19 use crate::HgPathCow;
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20 use crate::PatternFileWarning;
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21 use crate::StatusError;
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22 use crate::StatusOptions;
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23 use micro_timer::timed;
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24 use rayon::prelude::*;
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25 use sha1::{Digest, Sha1};
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26 use std::borrow::Cow;
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27 use std::io;
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28 use std::path::Path;
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29 use std::path::PathBuf;
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30 use std::sync::Mutex;
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31 use std::time::SystemTime;
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32
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33 /// Returns the status of the working directory compared to its parent
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34 /// changeset.
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35 ///
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36 /// This algorithm is based on traversing the filesystem tree (`fs` in function
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37 /// and variable names) and dirstate tree at the same time. The core of this
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38 /// traversal is the recursive `traverse_fs_directory_and_dirstate` function
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39 /// and its use of `itertools::merge_join_by`. When reaching a path that only
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40 /// exists in one of the two trees, depending on information requested by
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41 /// `options` we may need to traverse the remaining subtree.
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42 #[timed]
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43 pub fn status<'tree, 'on_disk: 'tree>(
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44 dmap: &'tree mut DirstateMap<'on_disk>,
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45 matcher: &(dyn Matcher + Sync),
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46 root_dir: PathBuf,
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47 ignore_files: Vec<PathBuf>,
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48 options: StatusOptions,
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49 ) -> Result<(DirstateStatus<'on_disk>, Vec<PatternFileWarning>), StatusError> {
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50 let (ignore_fn, warnings, patterns_changed): (IgnoreFnType, _, _) =
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51 if options.list_ignored || options.list_unknown {
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52 let mut hasher = Sha1::new();
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53 let (ignore_fn, warnings) = get_ignore_function(
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54 ignore_files,
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55 &root_dir,
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56 &mut |pattern_bytes| hasher.update(pattern_bytes),
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57 )?;
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58 let new_hash = *hasher.finalize().as_ref();
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59 let changed = new_hash != dmap.ignore_patterns_hash;
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60 dmap.ignore_patterns_hash = new_hash;
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61 (ignore_fn, warnings, Some(changed))
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62 } else {
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63 (Box::new(|&_| true), vec![], None)
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64 };
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65
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66 let filesystem_time_at_status_start = filesystem_now(&root_dir).ok();
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67 let outcome = DirstateStatus {
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68 filesystem_time_at_status_start,
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69 ..Default::default()
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70 };
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71 let common = StatusCommon {
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72 dmap,
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73 options,
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74 matcher,
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75 ignore_fn,
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76 outcome: Mutex::new(outcome),
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77 ignore_patterns_have_changed: patterns_changed,
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78 new_cachable_directories: Default::default(),
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79 outated_cached_directories: Default::default(),
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80 filesystem_time_at_status_start,
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81 };
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82 let is_at_repo_root = true;
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83 let hg_path = &BorrowedPath::OnDisk(HgPath::new(""));
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84 let has_ignored_ancestor = false;
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85 let root_cached_mtime = None;
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86 let root_dir_metadata = None;
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87 // If the path we have for the repository root is a symlink, do follow it.
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88 // (As opposed to symlinks within the working directory which are not
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89 // followed, using `std::fs::symlink_metadata`.)
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90 common.traverse_fs_directory_and_dirstate(
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91 has_ignored_ancestor,
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92 dmap.root.as_ref(),
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93 hg_path,
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94 &root_dir,
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95 root_dir_metadata,
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96 root_cached_mtime,
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97 is_at_repo_root,
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98 )?;
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99 let mut outcome = common.outcome.into_inner().unwrap();
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100 let new_cachable = common.new_cachable_directories.into_inner().unwrap();
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101 let outdated = common.outated_cached_directories.into_inner().unwrap();
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102
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103 outcome.dirty = common.ignore_patterns_have_changed == Some(true)
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104 || !outdated.is_empty()
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105 || !new_cachable.is_empty();
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106
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107 // Remove outdated mtimes before adding new mtimes, in case a given
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108 // directory is both
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109 for path in &outdated {
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110 let node = dmap.get_or_insert(path)?;
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111 if let NodeData::CachedDirectory { .. } = &node.data {
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112 node.data = NodeData::None
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113 }
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114 }
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115 for (path, mtime) in &new_cachable {
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116 let node = dmap.get_or_insert(path)?;
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117 match &node.data {
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118 NodeData::Entry(_) => {} // Don’t overwrite an entry
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119 NodeData::CachedDirectory { .. } | NodeData::None => {
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120 node.data = NodeData::CachedDirectory { mtime: *mtime }
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121 }
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122 }
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123 }
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124
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125 Ok((outcome, warnings))
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126 }
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127
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128 /// Bag of random things needed by various parts of the algorithm. Reduces the
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129 /// number of parameters passed to functions.
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130 struct StatusCommon<'a, 'tree, 'on_disk: 'tree> {
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131 dmap: &'tree DirstateMap<'on_disk>,
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132 options: StatusOptions,
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133 matcher: &'a (dyn Matcher + Sync),
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134 ignore_fn: IgnoreFnType<'a>,
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135 outcome: Mutex<DirstateStatus<'on_disk>>,
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136 new_cachable_directories:
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137 Mutex<Vec<(Cow<'on_disk, HgPath>, TruncatedTimestamp)>>,
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138 outated_cached_directories: Mutex<Vec<Cow<'on_disk, HgPath>>>,
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139
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140 /// Whether ignore files like `.hgignore` have changed since the previous
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141 /// time a `status()` call wrote their hash to the dirstate. `None` means
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142 /// we don’t know as this run doesn’t list either ignored or uknown files
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143 /// and therefore isn’t reading `.hgignore`.
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144 ignore_patterns_have_changed: Option<bool>,
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145
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146 /// The current time at the start of the `status()` algorithm, as measured
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147 /// and possibly truncated by the filesystem.
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148 filesystem_time_at_status_start: Option<SystemTime>,
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149 }
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150
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151 enum Outcome {
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152 Modified,
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153 Added,
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154 Removed,
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155 Deleted,
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156 Clean,
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157 Ignored,
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158 Unknown,
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159 Unsure,
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160 }
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161
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162 impl<'a, 'tree, 'on_disk> StatusCommon<'a, 'tree, 'on_disk> {
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163 fn push_outcome(
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164 &self,
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165 which: Outcome,
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166 dirstate_node: &NodeRef<'tree, 'on_disk>,
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167 ) -> Result<(), DirstateV2ParseError> {
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168 let path = dirstate_node
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169 .full_path_borrowed(self.dmap.on_disk)?
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170 .detach_from_tree();
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171 let copy_source = if self.options.list_copies {
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172 dirstate_node
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173 .copy_source_borrowed(self.dmap.on_disk)?
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174 .map(|source| source.detach_from_tree())
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175 } else {
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176 None
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177 };
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178 self.push_outcome_common(which, path, copy_source);
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179 Ok(())
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180 }
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181
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182 fn push_outcome_without_copy_source(
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183 &self,
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184 which: Outcome,
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185 path: &BorrowedPath<'_, 'on_disk>,
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186 ) {
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187 self.push_outcome_common(which, path.detach_from_tree(), None)
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188 }
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189
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190 fn push_outcome_common(
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191 &self,
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192 which: Outcome,
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193 path: HgPathCow<'on_disk>,
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194 copy_source: Option<HgPathCow<'on_disk>>,
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195 ) {
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196 let mut outcome = self.outcome.lock().unwrap();
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197 let vec = match which {
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198 Outcome::Modified => &mut outcome.modified,
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199 Outcome::Added => &mut outcome.added,
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200 Outcome::Removed => &mut outcome.removed,
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201 Outcome::Deleted => &mut outcome.deleted,
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202 Outcome::Clean => &mut outcome.clean,
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203 Outcome::Ignored => &mut outcome.ignored,
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204 Outcome::Unknown => &mut outcome.unknown,
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205 Outcome::Unsure => &mut outcome.unsure,
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206 };
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207 vec.push(StatusPath { path, copy_source });
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208 }
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209
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210 fn read_dir(
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211 &self,
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212 hg_path: &HgPath,
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213 fs_path: &Path,
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214 is_at_repo_root: bool,
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215 ) -> Result<Vec<DirEntry>, ()> {
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216 DirEntry::read_dir(fs_path, is_at_repo_root)
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217 .map_err(|error| self.io_error(error, hg_path))
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218 }
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219
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220 fn io_error(&self, error: std::io::Error, hg_path: &HgPath) {
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221 let errno = error.raw_os_error().expect("expected real OS error");
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222 self.outcome
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223 .lock()
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224 .unwrap()
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225 .bad
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226 .push((hg_path.to_owned().into(), BadMatch::OsError(errno)))
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227 }
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228
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229 fn check_for_outdated_directory_cache(
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230 &self,
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231 dirstate_node: &NodeRef<'tree, 'on_disk>,
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232 ) -> Result<(), DirstateV2ParseError> {
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233 if self.ignore_patterns_have_changed == Some(true)
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234 && dirstate_node.cached_directory_mtime()?.is_some()
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235 {
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236 self.outated_cached_directories.lock().unwrap().push(
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237 dirstate_node
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238 .full_path_borrowed(self.dmap.on_disk)?
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239 .detach_from_tree(),
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240 )
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241 }
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242 Ok(())
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243 }
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244
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245 /// If this returns true, we can get accurate results by only using
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246 /// `symlink_metadata` for child nodes that exist in the dirstate and don’t
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247 /// need to call `read_dir`.
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248 fn can_skip_fs_readdir(
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249 &self,
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250 directory_metadata: Option<&std::fs::Metadata>,
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251 cached_directory_mtime: Option<TruncatedTimestamp>,
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252 ) -> bool {
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253 if !self.options.list_unknown && !self.options.list_ignored {
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254 // All states that we care about listing have corresponding
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255 // dirstate entries.
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256 // This happens for example with `hg status -mard`.
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257 return true;
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258 }
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259 if !self.options.list_ignored
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260 && self.ignore_patterns_have_changed == Some(false)
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261 {
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262 if let Some(cached_mtime) = cached_directory_mtime {
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263 // The dirstate contains a cached mtime for this directory, set
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264 // by a previous run of the `status` algorithm which found this
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265 // directory eligible for `read_dir` caching.
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266 if let Some(meta) = directory_metadata {
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267 if cached_mtime
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268 .likely_equal_to_mtime_of(meta)
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269 .unwrap_or(false)
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270 {
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271 // The mtime of that directory has not changed
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272 // since then, which means that the results of
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273 // `read_dir` should also be unchanged.
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274 return true;
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275 }
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276 }
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277 }
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278 }
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279 false
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280 }
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281
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282 /// Returns whether all child entries of the filesystem directory have a
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283 /// corresponding dirstate node or are ignored.
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284 fn traverse_fs_directory_and_dirstate(
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285 &self,
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286 has_ignored_ancestor: bool,
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287 dirstate_nodes: ChildNodesRef<'tree, 'on_disk>,
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288 directory_hg_path: &BorrowedPath<'tree, 'on_disk>,
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289 directory_fs_path: &Path,
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290 directory_metadata: Option<&std::fs::Metadata>,
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291 cached_directory_mtime: Option<TruncatedTimestamp>,
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292 is_at_repo_root: bool,
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293 ) -> Result<bool, DirstateV2ParseError> {
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294 if self.can_skip_fs_readdir(directory_metadata, cached_directory_mtime)
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295 {
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296 dirstate_nodes
47338
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297 .par_iter()
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298 .map(|dirstate_node| {
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299 let fs_path = directory_fs_path.join(get_path_from_bytes(
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300 dirstate_node.base_name(self.dmap.on_disk)?.as_bytes(),
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301 ));
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diff changeset
302 match std::fs::symlink_metadata(&fs_path) {
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303 Ok(fs_metadata) => self.traverse_fs_and_dirstate(
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304 &fs_path,
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diff changeset
305 &fs_metadata,
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diff changeset
306 dirstate_node,
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diff changeset
307 has_ignored_ancestor,
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diff changeset
308 ),
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diff changeset
309 Err(e) if e.kind() == std::io::ErrorKind::NotFound => {
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diff changeset
310 self.traverse_dirstate_only(dirstate_node)
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diff changeset
311 }
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diff changeset
312 Err(error) => {
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diff changeset
313 let hg_path =
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diff changeset
314 dirstate_node.full_path(self.dmap.on_disk)?;
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diff changeset
315 Ok(self.io_error(error, hg_path))
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316 }
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317 }
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diff changeset
318 })
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diff changeset
319 .collect::<Result<_, _>>()?;
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320
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diff changeset
321 // We don’t know, so conservatively say this isn’t the case
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diff changeset
322 let children_all_have_dirstate_node_or_are_ignored = false;
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323
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diff changeset
324 return Ok(children_all_have_dirstate_node_or_are_ignored);
47338
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diff changeset
325 }
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diff changeset
326
47115
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diff changeset
327 let mut fs_entries = if let Ok(entries) = self.read_dir(
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diff changeset
328 directory_hg_path,
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diff changeset
329 directory_fs_path,
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diff changeset
330 is_at_repo_root,
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diff changeset
331 ) {
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diff changeset
332 entries
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diff changeset
333 } else {
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diff changeset
334 // Treat an unreadable directory (typically because of insufficient
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diff changeset
335 // permissions) like an empty directory. `self.read_dir` has
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diff changeset
336 // already called `self.io_error` so a warning will be emitted.
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diff changeset
337 Vec::new()
47115
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diff changeset
338 };
47113
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diff changeset
339
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diff changeset
340 // `merge_join_by` requires both its input iterators to be sorted:
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diff changeset
341
47333
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diff changeset
342 let dirstate_nodes = dirstate_nodes.sorted();
47113
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diff changeset
343 // `sort_unstable_by_key` doesn’t allow keys borrowing from the value:
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diff changeset
344 // https://github.com/rust-lang/rust/issues/34162
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diff changeset
345 fs_entries.sort_unstable_by(|e1, e2| e1.base_name.cmp(&e2.base_name));
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346
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347 // Propagate here any error that would happen inside the comparison
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348 // callback below
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349 for dirstate_node in &dirstate_nodes {
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350 dirstate_node.base_name(self.dmap.on_disk)?;
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351 }
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352 itertools::merge_join_by(
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353 dirstate_nodes,
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354 &fs_entries,
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355 |dirstate_node, fs_entry| {
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356 // This `unwrap` never panics because we already propagated
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357 // those errors above
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358 dirstate_node
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359 .base_name(self.dmap.on_disk)
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360 .unwrap()
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361 .cmp(&fs_entry.base_name)
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362 },
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363 )
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364 .par_bridge()
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365 .map(|pair| {
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366 use itertools::EitherOrBoth::*;
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367 let has_dirstate_node_or_is_ignored;
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368 match pair {
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369 Both(dirstate_node, fs_entry) => {
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370 self.traverse_fs_and_dirstate(
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371 &fs_entry.full_path,
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372 &fs_entry.metadata,
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373 dirstate_node,
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374 has_ignored_ancestor,
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375 )?;
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376 has_dirstate_node_or_is_ignored = true
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377 }
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378 Left(dirstate_node) => {
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379 self.traverse_dirstate_only(dirstate_node)?;
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380 has_dirstate_node_or_is_ignored = true;
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381 }
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382 Right(fs_entry) => {
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383 has_dirstate_node_or_is_ignored = self.traverse_fs_only(
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384 has_ignored_ancestor,
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385 directory_hg_path,
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386 fs_entry,
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387 )
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388 }
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389 }
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390 Ok(has_dirstate_node_or_is_ignored)
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391 })
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392 .try_reduce(|| true, |a, b| Ok(a && b))
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393 }
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394
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diff changeset
395 fn traverse_fs_and_dirstate(
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396 &self,
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397 fs_path: &Path,
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398 fs_metadata: &std::fs::Metadata,
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399 dirstate_node: NodeRef<'tree, 'on_disk>,
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400 has_ignored_ancestor: bool,
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401 ) -> Result<(), DirstateV2ParseError> {
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402 self.check_for_outdated_directory_cache(&dirstate_node)?;
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403 let hg_path = &dirstate_node.full_path_borrowed(self.dmap.on_disk)?;
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404 let file_type = fs_metadata.file_type();
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405 let file_or_symlink = file_type.is_file() || file_type.is_symlink();
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406 if !file_or_symlink {
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407 // If we previously had a file here, it was removed (with
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408 // `hg rm` or similar) or deleted before it could be
47114
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diff changeset
409 // replaced by a directory or something else.
48454
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diff changeset
410 self.mark_removed_or_deleted_if_file(&dirstate_node)?;
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411 }
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diff changeset
412 if file_type.is_dir() {
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diff changeset
413 if self.options.collect_traversed_dirs {
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diff changeset
414 self.outcome
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diff changeset
415 .lock()
73ddcedeaadf dirstate-tree: Change status() results to not borrow DirstateMap
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diff changeset
416 .unwrap()
73ddcedeaadf dirstate-tree: Change status() results to not borrow DirstateMap
Simon Sapin <simon.sapin@octobus.net>
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diff changeset
417 .traversed
73ddcedeaadf dirstate-tree: Change status() results to not borrow DirstateMap
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diff changeset
418 .push(hg_path.detach_from_tree())
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diff changeset
419 }
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diff changeset
420 let is_ignored = has_ignored_ancestor || (self.ignore_fn)(hg_path);
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diff changeset
421 let is_at_repo_root = false;
47475
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diff changeset
422 let children_all_have_dirstate_node_or_are_ignored = self
47349
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diff changeset
423 .traverse_fs_directory_and_dirstate(
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diff changeset
424 is_ignored,
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diff changeset
425 dirstate_node.children(self.dmap.on_disk)?,
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diff changeset
426 hg_path,
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parents: 47347
diff changeset
427 fs_path,
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
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parents: 47347
diff changeset
428 Some(fs_metadata),
48193
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
429 dirstate_node.cached_directory_mtime()?,
47349
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parents: 47347
diff changeset
430 is_at_repo_root,
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parents: 47347
diff changeset
431 )?;
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
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diff changeset
432 self.maybe_save_directory_mtime(
47475
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diff changeset
433 children_all_have_dirstate_node_or_are_ignored,
47349
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Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
434 fs_metadata,
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
435 dirstate_node,
47335
ed1583a845d2 dirstate-v2: Make more APIs fallible, returning Result
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diff changeset
436 )?
47113
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diff changeset
437 } else {
47114
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diff changeset
438 if file_or_symlink && self.matcher.matches(hg_path) {
47335
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parents: 47333
diff changeset
439 if let Some(state) = dirstate_node.state()? {
47333
69530e5d4fe5 dirstate-tree: Add `NodeRef` and `ChildNodesRef` enums
Simon Sapin <simon.sapin@octobus.net>
parents: 47331
diff changeset
440 match state {
48454
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
441 EntryState::Added => {
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
442 self.push_outcome(Outcome::Added, &dirstate_node)?
473af5cbc209 rhg: Add support for `rhg status --copies`
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parents: 48422
diff changeset
443 }
47117
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diff changeset
444 EntryState::Removed => self
48454
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parents: 48422
diff changeset
445 .push_outcome(Outcome::Removed, &dirstate_node)?,
47117
60d852ae7e7b dirstate-tree: Paralellize the status algorithm with Rayon
Simon Sapin <simon.sapin@octobus.net>
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diff changeset
446 EntryState::Merged => self
48454
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
447 .push_outcome(Outcome::Modified, &dirstate_node)?,
47338
f27f2afb15da dirstate-tree: Skip readdir() in `hg status -mard`
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
448 EntryState::Normal => self
f27f2afb15da dirstate-tree: Skip readdir() in `hg status -mard`
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parents: 47336
diff changeset
449 .handle_normal_file(&dirstate_node, fs_metadata)?,
47113
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diff changeset
450 }
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Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
451 } else {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
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parents: 47112
diff changeset
452 // `node.entry.is_none()` indicates a "directory"
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
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parents: 47112
diff changeset
453 // node, but the filesystem has a file
47475
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Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
454 self.mark_unknown_or_ignored(
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
455 has_ignored_ancestor,
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
456 hg_path,
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
457 );
47113
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Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
458 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
459 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
460
47336
8d0260d0dbc9 dirstate-v2: Make the dirstate bytes buffer available in more places
Simon Sapin <simon.sapin@octobus.net>
parents: 47335
diff changeset
461 for child_node in dirstate_node.children(self.dmap.on_disk)?.iter()
8d0260d0dbc9 dirstate-v2: Make the dirstate bytes buffer available in more places
Simon Sapin <simon.sapin@octobus.net>
parents: 47335
diff changeset
462 {
47335
ed1583a845d2 dirstate-v2: Make more APIs fallible, returning Result
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
463 self.traverse_dirstate_only(child_node)?
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
464 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
465 }
47335
ed1583a845d2 dirstate-v2: Make more APIs fallible, returning Result
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
466 Ok(())
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
467 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
468
47349
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
469 fn maybe_save_directory_mtime(
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
470 &self,
47475
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
471 children_all_have_dirstate_node_or_are_ignored: bool,
47349
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
472 directory_metadata: &std::fs::Metadata,
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
473 dirstate_node: NodeRef<'tree, 'on_disk>,
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
474 ) -> Result<(), DirstateV2ParseError> {
47475
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
475 if children_all_have_dirstate_node_or_are_ignored {
47349
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
476 // All filesystem directory entries from `read_dir` have a
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
477 // corresponding node in the dirstate, so we can reconstitute the
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
478 // names of those entries without calling `read_dir` again.
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
479 if let (Some(status_start), Ok(directory_mtime)) = (
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
480 &self.filesystem_time_at_status_start,
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
481 directory_metadata.modified(),
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
482 ) {
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
483 // Although the Rust standard library’s `SystemTime` type
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
484 // has nanosecond precision, the times reported for a
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
485 // directory’s (or file’s) modified time may have lower
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
486 // resolution based on the filesystem (for example ext3
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
487 // only stores integer seconds), kernel (see
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
488 // https://stackoverflow.com/a/14393315/1162888), etc.
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
489 if &directory_mtime >= status_start {
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
490 // The directory was modified too recently, don’t cache its
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
491 // `read_dir` results.
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
492 //
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
493 // A timeline like this is possible:
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
494 //
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
495 // 1. A change to this directory (direct child was
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
496 // added or removed) cause its mtime to be set
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
497 // (possibly truncated) to `directory_mtime`
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
498 // 2. This `status` algorithm calls `read_dir`
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
499 // 3. An other change is made to the same directory is
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
500 // made so that calling `read_dir` agin would give
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
501 // different results, but soon enough after 1. that
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
502 // the mtime stays the same
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
503 //
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
504 // On a system where the time resolution poor, this
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
505 // scenario is not unlikely if all three steps are caused
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
506 // by the same script.
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
507 } else {
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
508 // We’ve observed (through `status_start`) that time has
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
509 // “progressed” since `directory_mtime`, so any further
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
510 // change to this directory is extremely likely to cause a
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
511 // different mtime.
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
512 //
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
513 // Having the same mtime again is not entirely impossible
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
514 // since the system clock is not monotonous. It could jump
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
515 // backward to some point before `directory_mtime`, then a
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
516 // directory change could potentially happen during exactly
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
517 // the wrong tick.
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
518 //
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
519 // We deem this scenario (unlike the previous one) to be
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
520 // unlikely enough in practice.
48193
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
521 let truncated = TruncatedTimestamp::from(directory_mtime);
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
522 let is_up_to_date = if let Some(cached) =
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
523 dirstate_node.cached_directory_mtime()?
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
524 {
48257
f45d35950db6 dirstate: rename a `very_likely_equal` method to `likely_equal`
Simon Sapin <simon.sapin@octobus.net>
parents: 48218
diff changeset
525 cached.likely_equal(truncated)
48193
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
526 } else {
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
527 false
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
528 };
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
529 if !is_up_to_date {
47349
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
530 let hg_path = dirstate_node
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
531 .full_path_borrowed(self.dmap.on_disk)?
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
532 .detach_from_tree();
47409
0ef8231e413f dirstate-v2: Store a hash of ignore patterns (.hgignore)
Simon Sapin <simon.sapin@octobus.net>
parents: 47350
diff changeset
533 self.new_cachable_directories
47349
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
534 .lock()
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
535 .unwrap()
48193
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
536 .push((hg_path, truncated))
47349
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
537 }
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
538 }
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
539 }
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
540 }
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
541 Ok(())
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
542 }
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
543
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
544 /// A file with `EntryState::Normal` in the dirstate was found in the
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
545 /// filesystem
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
546 fn handle_normal_file(
47117
60d852ae7e7b dirstate-tree: Paralellize the status algorithm with Rayon
Simon Sapin <simon.sapin@octobus.net>
parents: 47115
diff changeset
547 &self,
47347
73ddcedeaadf dirstate-tree: Change status() results to not borrow DirstateMap
Simon Sapin <simon.sapin@octobus.net>
parents: 47346
diff changeset
548 dirstate_node: &NodeRef<'tree, 'on_disk>,
47338
f27f2afb15da dirstate-tree: Skip readdir() in `hg status -mard`
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
549 fs_metadata: &std::fs::Metadata,
47335
ed1583a845d2 dirstate-v2: Make more APIs fallible, returning Result
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
550 ) -> Result<(), DirstateV2ParseError> {
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
551 // Keep the low 31 bits
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
552 fn truncate_u64(value: u64) -> i32 {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
553 (value & 0x7FFF_FFFF) as i32
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
554 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
555
47333
69530e5d4fe5 dirstate-tree: Add `NodeRef` and `ChildNodesRef` enums
Simon Sapin <simon.sapin@octobus.net>
parents: 47331
diff changeset
556 let entry = dirstate_node
47335
ed1583a845d2 dirstate-v2: Make more APIs fallible, returning Result
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
557 .entry()?
47333
69530e5d4fe5 dirstate-tree: Add `NodeRef` and `ChildNodesRef` enums
Simon Sapin <simon.sapin@octobus.net>
parents: 47331
diff changeset
558 .expect("handle_normal_file called with entry-less node");
47338
f27f2afb15da dirstate-tree: Skip readdir() in `hg status -mard`
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
559 let mode_changed =
f27f2afb15da dirstate-tree: Skip readdir() in `hg status -mard`
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
560 || self.options.check_exec && entry.mode_changed(fs_metadata);
48022
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 47475
diff changeset
561 let size = entry.size();
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 47475
diff changeset
562 let size_changed = size != truncate_u64(fs_metadata.len());
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 47475
diff changeset
563 if size >= 0 && size_changed && fs_metadata.file_type().is_symlink() {
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
564 // issue6456: Size returned may be longer due to encryption
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
565 // on EXT-4 fscrypt. TODO maybe only do it on EXT4?
48454
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
566 self.push_outcome(Outcome::Unsure, dirstate_node)?
47335
ed1583a845d2 dirstate-v2: Make more APIs fallible, returning Result
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
567 } else if dirstate_node.has_copy_source()
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
568 || entry.is_from_other_parent()
48022
f2a9db29cb2d rust: Make the fields of DirstateEntry private
Simon Sapin <simon.sapin@octobus.net>
parents: 47475
diff changeset
569 || (size >= 0 && (size_changed || mode_changed()))
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
570 {
48454
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
571 self.push_outcome(Outcome::Modified, dirstate_node)?
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
572 } else {
48260
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48257
diff changeset
573 let mtime_looks_clean;
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48257
diff changeset
574 if let Some(dirstate_mtime) = entry.truncated_mtime() {
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48257
diff changeset
575 let fs_mtime = TruncatedTimestamp::for_mtime_of(fs_metadata)
48263
83d0bd45b662 dirstate-v2: actually use sub-second mtime precision
Simon Sapin <simon.sapin@octobus.net>
parents: 48260
diff changeset
576 .expect("OS/libc does not support mtime?");
48391
b80e5e75d51e dirstate: remove `lastnormaltime` mechanism
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
577 // There might be a change in the future if for example the
b80e5e75d51e dirstate: remove `lastnormaltime` mechanism
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
578 // internal clock become off while process run, but this is a
b80e5e75d51e dirstate: remove `lastnormaltime` mechanism
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
579 // case where the issues the user would face
b80e5e75d51e dirstate: remove `lastnormaltime` mechanism
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
580 // would be a lot worse and there is nothing we
b80e5e75d51e dirstate: remove `lastnormaltime` mechanism
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
581 // can really do.
48260
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48257
diff changeset
582 mtime_looks_clean = fs_mtime.likely_equal(dirstate_mtime)
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48257
diff changeset
583 } else {
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48257
diff changeset
584 // No mtime in the dirstate entry
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48257
diff changeset
585 mtime_looks_clean = false
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48257
diff changeset
586 };
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48257
diff changeset
587 if !mtime_looks_clean {
48454
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
588 self.push_outcome(Outcome::Unsure, dirstate_node)?
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
589 } else if self.options.list_clean {
48454
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
590 self.push_outcome(Outcome::Clean, dirstate_node)?
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
591 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
592 }
47335
ed1583a845d2 dirstate-v2: Make more APIs fallible, returning Result
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
593 Ok(())
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
594 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
595
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
596 /// A node in the dirstate tree has no corresponding filesystem entry
47335
ed1583a845d2 dirstate-v2: Make more APIs fallible, returning Result
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
597 fn traverse_dirstate_only(
ed1583a845d2 dirstate-v2: Make more APIs fallible, returning Result
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
598 &self,
47347
73ddcedeaadf dirstate-tree: Change status() results to not borrow DirstateMap
Simon Sapin <simon.sapin@octobus.net>
parents: 47346
diff changeset
599 dirstate_node: NodeRef<'tree, 'on_disk>,
47335
ed1583a845d2 dirstate-v2: Make more APIs fallible, returning Result
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
600 ) -> Result<(), DirstateV2ParseError> {
47474
c657beacdf2e dirstate-v2: Drop cached read_dir results after .hgignore changes
Simon Sapin <simon.sapin@octobus.net>
parents: 47409
diff changeset
601 self.check_for_outdated_directory_cache(&dirstate_node)?;
48454
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
602 self.mark_removed_or_deleted_if_file(&dirstate_node)?;
47333
69530e5d4fe5 dirstate-tree: Add `NodeRef` and `ChildNodesRef` enums
Simon Sapin <simon.sapin@octobus.net>
parents: 47331
diff changeset
603 dirstate_node
47336
8d0260d0dbc9 dirstate-v2: Make the dirstate bytes buffer available in more places
Simon Sapin <simon.sapin@octobus.net>
parents: 47335
diff changeset
604 .children(self.dmap.on_disk)?
47333
69530e5d4fe5 dirstate-tree: Add `NodeRef` and `ChildNodesRef` enums
Simon Sapin <simon.sapin@octobus.net>
parents: 47331
diff changeset
605 .par_iter()
47335
ed1583a845d2 dirstate-v2: Make more APIs fallible, returning Result
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
606 .map(|child_node| self.traverse_dirstate_only(child_node))
ed1583a845d2 dirstate-v2: Make more APIs fallible, returning Result
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
607 .collect()
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
608 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
609
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
610 /// A node in the dirstate tree has no corresponding *file* on the
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
611 /// filesystem
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
612 ///
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
613 /// Does nothing on a "directory" node
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
614 fn mark_removed_or_deleted_if_file(
47117
60d852ae7e7b dirstate-tree: Paralellize the status algorithm with Rayon
Simon Sapin <simon.sapin@octobus.net>
parents: 47115
diff changeset
615 &self,
48454
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
616 dirstate_node: &NodeRef<'tree, 'on_disk>,
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
617 ) -> Result<(), DirstateV2ParseError> {
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
618 if let Some(state) = dirstate_node.state()? {
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
619 let path = dirstate_node.full_path(self.dmap.on_disk)?;
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
620 if self.matcher.matches(path) {
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
621 if let EntryState::Removed = state {
48454
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
622 self.push_outcome(Outcome::Removed, dirstate_node)?
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
623 } else {
48454
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
624 self.push_outcome(Outcome::Deleted, &dirstate_node)?
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
625 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
626 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
627 }
48454
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
628 Ok(())
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
629 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
630
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
631 /// Something in the filesystem has no corresponding dirstate node
47475
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
632 ///
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
633 /// Returns whether that path is ignored
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
634 fn traverse_fs_only(
47117
60d852ae7e7b dirstate-tree: Paralellize the status algorithm with Rayon
Simon Sapin <simon.sapin@octobus.net>
parents: 47115
diff changeset
635 &self,
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
636 has_ignored_ancestor: bool,
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
637 directory_hg_path: &HgPath,
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
638 fs_entry: &DirEntry,
47475
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
639 ) -> bool {
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
640 let hg_path = directory_hg_path.join(&fs_entry.base_name);
47114
aeb03758f37a dirstate-tree: Ignore FIFOs etc. in the status algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47113
diff changeset
641 let file_type = fs_entry.metadata.file_type();
aeb03758f37a dirstate-tree: Ignore FIFOs etc. in the status algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47113
diff changeset
642 let file_or_symlink = file_type.is_file() || file_type.is_symlink();
aeb03758f37a dirstate-tree: Ignore FIFOs etc. in the status algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47113
diff changeset
643 if file_type.is_dir() {
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
644 let is_ignored =
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
645 has_ignored_ancestor || (self.ignore_fn)(&hg_path);
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
646 let traverse_children = if is_ignored {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
647 // Descendants of an ignored directory are all ignored
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
648 self.options.list_ignored
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
649 } else {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
650 // Descendants of an unknown directory may be either unknown or
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
651 // ignored
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
652 self.options.list_unknown || self.options.list_ignored
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
653 };
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
654 if traverse_children {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
655 let is_at_repo_root = false;
47115
1b4f0f819f92 dirstate-tree: Handle I/O errors in status
Simon Sapin <simon.sapin@octobus.net>
parents: 47114
diff changeset
656 if let Ok(children_fs_entries) = self.read_dir(
1b4f0f819f92 dirstate-tree: Handle I/O errors in status
Simon Sapin <simon.sapin@octobus.net>
parents: 47114
diff changeset
657 &hg_path,
1b4f0f819f92 dirstate-tree: Handle I/O errors in status
Simon Sapin <simon.sapin@octobus.net>
parents: 47114
diff changeset
658 &fs_entry.full_path,
1b4f0f819f92 dirstate-tree: Handle I/O errors in status
Simon Sapin <simon.sapin@octobus.net>
parents: 47114
diff changeset
659 is_at_repo_root,
1b4f0f819f92 dirstate-tree: Handle I/O errors in status
Simon Sapin <simon.sapin@octobus.net>
parents: 47114
diff changeset
660 ) {
47117
60d852ae7e7b dirstate-tree: Paralellize the status algorithm with Rayon
Simon Sapin <simon.sapin@octobus.net>
parents: 47115
diff changeset
661 children_fs_entries.par_iter().for_each(|child_fs_entry| {
47115
1b4f0f819f92 dirstate-tree: Handle I/O errors in status
Simon Sapin <simon.sapin@octobus.net>
parents: 47114
diff changeset
662 self.traverse_fs_only(
1b4f0f819f92 dirstate-tree: Handle I/O errors in status
Simon Sapin <simon.sapin@octobus.net>
parents: 47114
diff changeset
663 is_ignored,
1b4f0f819f92 dirstate-tree: Handle I/O errors in status
Simon Sapin <simon.sapin@octobus.net>
parents: 47114
diff changeset
664 &hg_path,
47117
60d852ae7e7b dirstate-tree: Paralellize the status algorithm with Rayon
Simon Sapin <simon.sapin@octobus.net>
parents: 47115
diff changeset
665 child_fs_entry,
47475
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
666 );
47117
60d852ae7e7b dirstate-tree: Paralellize the status algorithm with Rayon
Simon Sapin <simon.sapin@octobus.net>
parents: 47115
diff changeset
667 })
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
668 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
669 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
670 if self.options.collect_traversed_dirs {
47117
60d852ae7e7b dirstate-tree: Paralellize the status algorithm with Rayon
Simon Sapin <simon.sapin@octobus.net>
parents: 47115
diff changeset
671 self.outcome.lock().unwrap().traversed.push(hg_path.into())
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
672 }
47475
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
673 is_ignored
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
674 } else {
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
675 if file_or_symlink {
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
676 if self.matcher.matches(&hg_path) {
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
677 self.mark_unknown_or_ignored(
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
678 has_ignored_ancestor,
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
679 &BorrowedPath::InMemory(&hg_path),
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
680 )
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
681 } else {
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
682 // We haven’t computed whether this path is ignored. It
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
683 // might not be, and a future run of status might have a
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
684 // different matcher that matches it. So treat it as not
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
685 // ignored. That is, inhibit readdir caching of the parent
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
686 // directory.
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
687 false
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
688 }
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
689 } else {
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
690 // This is neither a directory, a plain file, or a symlink.
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
691 // Treat it like an ignored file.
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
692 true
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
693 }
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
694 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
695 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
696
47475
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
697 /// Returns whether that path is ignored
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
698 fn mark_unknown_or_ignored(
47117
60d852ae7e7b dirstate-tree: Paralellize the status algorithm with Rayon
Simon Sapin <simon.sapin@octobus.net>
parents: 47115
diff changeset
699 &self,
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
700 has_ignored_ancestor: bool,
47347
73ddcedeaadf dirstate-tree: Change status() results to not borrow DirstateMap
Simon Sapin <simon.sapin@octobus.net>
parents: 47346
diff changeset
701 hg_path: &BorrowedPath<'_, 'on_disk>,
47475
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
702 ) -> bool {
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
703 let is_ignored = has_ignored_ancestor || (self.ignore_fn)(&hg_path);
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
704 if is_ignored {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
705 if self.options.list_ignored {
48454
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
706 self.push_outcome_without_copy_source(
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
707 Outcome::Ignored,
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
708 hg_path,
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
709 )
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
710 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
711 } else {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
712 if self.options.list_unknown {
48454
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
713 self.push_outcome_without_copy_source(
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
714 Outcome::Unknown,
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
715 hg_path,
473af5cbc209 rhg: Add support for `rhg status --copies`
Simon Sapin <simon.sapin@octobus.net>
parents: 48422
diff changeset
716 )
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
717 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
718 }
47475
94e38822d395 status: Extend read_dir caching to directories with ignored files
Simon Sapin <simon.sapin@octobus.net>
parents: 47474
diff changeset
719 is_ignored
47113
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
720 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
721 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
722
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
723 struct DirEntry {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
724 base_name: HgPathBuf,
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
725 full_path: PathBuf,
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
726 metadata: std::fs::Metadata,
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
727 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
728
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
729 impl DirEntry {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
730 /// Returns **unsorted** entries in the given directory, with name and
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
731 /// metadata.
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
732 ///
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
733 /// If a `.hg` sub-directory is encountered:
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
734 ///
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
735 /// * At the repository root, ignore that sub-directory
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
736 /// * Elsewhere, we’re listing the content of a sub-repo. Return an empty
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
737 /// list instead.
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
738 fn read_dir(path: &Path, is_at_repo_root: bool) -> io::Result<Vec<Self>> {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
739 let mut results = Vec::new();
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
740 for entry in path.read_dir()? {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
741 let entry = entry?;
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
742 let metadata = entry.metadata()?;
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
743 let name = get_bytes_from_os_string(entry.file_name());
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
744 // FIXME don't do this when cached
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
745 if name == b".hg" {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
746 if is_at_repo_root {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
747 // Skip the repo’s own .hg (might be a symlink)
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
748 continue;
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
749 } else if metadata.is_dir() {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
750 // A .hg sub-directory at another location means a subrepo,
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
751 // skip it entirely.
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
752 return Ok(Vec::new());
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
753 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
754 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
755 results.push(DirEntry {
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
756 base_name: name.into(),
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
757 full_path: entry.path(),
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
758 metadata,
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
759 })
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
760 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
761 Ok(results)
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
762 }
be579775c2d9 dirstate-tree: Add the new `status()` algorithm
Simon Sapin <simon.sapin@octobus.net>
parents: 47112
diff changeset
763 }
47349
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
764
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
765 /// Return the `mtime` of a temporary file newly-created in the `.hg` directory
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
766 /// of the give repository.
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
767 ///
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
768 /// This is similar to `SystemTime::now()`, with the result truncated to the
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
769 /// same time resolution as other files’ modification times. Using `.hg`
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
770 /// instead of the system’s default temporary directory (such as `/tmp`) makes
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
771 /// it more likely the temporary file is in the same disk partition as contents
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
772 /// of the working directory, which can matter since different filesystems may
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
773 /// store timestamps with different resolutions.
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
774 ///
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
775 /// This may fail, typically if we lack write permissions. In that case we
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
776 /// should continue the `status()` algoritm anyway and consider the current
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
777 /// date/time to be unknown.
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
778 fn filesystem_now(repo_root: &Path) -> Result<SystemTime, io::Error> {
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
779 tempfile::tempfile_in(repo_root.join(".hg"))?
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
780 .metadata()?
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
781 .modified()
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47347
diff changeset
782 }