Mercurial > public > mercurial-scm > hg-stable

annotate contrib/python-zstandard/zstd/common/pool.h @ 40450:41f0529b5112 stable

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
commandserver: get around ETIMEDOUT raised by selectors2 selector.select() should exits with an empty event list on timed out, but selectors2 raises OSError if timeout expires while recovering from EINTR. Spotted while debugging new chg feature.
author Yuya Nishihara <yuya@tcha.org>
date Mon, 03 Dec 2018 21:45:15 +0900
parents 73fef626dae3
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
1 /*
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
2 * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
30924
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
3 * All rights reserved.
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
4 *
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
5 * This source code is licensed under both the BSD-style license (found in the
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
7 * in the COPYING file in the root directory of this source tree).
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
8 * You may select, at your option, one of the above-listed licenses.
30924
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
9 */
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
10
30924
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
11 #ifndef POOL_H
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
12 #define POOL_H
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
13
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
14 #if defined (__cplusplus)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
15 extern "C" {
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
16 #endif
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
17
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
18
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
19 #include <stddef.h> /* size_t */
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
20 #define ZSTD_STATIC_LINKING_ONLY /* ZSTD_customMem */
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
21 #include "zstd.h"
30924
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
22
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
23 typedef struct POOL_ctx_s POOL_ctx;
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
24
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
25 /*! POOL_create() :
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
26 * Create a thread pool with at most `numThreads` threads.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
27 * `numThreads` must be at least 1.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
28 * The maximum number of queued jobs before blocking is `queueSize`.
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
29 * @return : POOL_ctx pointer on success, else NULL.
30924
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
30 */
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
31 POOL_ctx* POOL_create(size_t numThreads, size_t queueSize);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
32
40122
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
33 POOL_ctx* POOL_create_advanced(size_t numThreads, size_t queueSize,
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
34 ZSTD_customMem customMem);
30924
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
35
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
36 /*! POOL_free() :
40122
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
37 * Free a thread pool returned by POOL_create().
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
38 */
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
39 void POOL_free(POOL_ctx* ctx);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
40
40122
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
41 /*! POOL_resize() :
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
42 * Expands or shrinks pool's number of threads.
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
43 * This is more efficient than releasing + creating a new context,
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
44 * since it tries to preserve and re-use existing threads.
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
45 * `numThreads` must be at least 1.
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
46 * @return : 0 when resize was successful,
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
47 * !0 (typically 1) if there is an error.
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
48 * note : only numThreads can be resized, queueSize remains unchanged.
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
49 */
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
50 int POOL_resize(POOL_ctx* ctx, size_t numThreads);
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
51
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
52 /*! POOL_sizeof() :
40122
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
53 * @return threadpool memory usage
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
54 * note : compatible with NULL (returns 0 in this case)
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
55 */
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
56 size_t POOL_sizeof(POOL_ctx* ctx);
30924
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
57
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
58 /*! POOL_function :
40122
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
59 * The function type that can be added to a thread pool.
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
60 */
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
61 typedef void (*POOL_function)(void*);
30924
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
62
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
63 /*! POOL_add() :
40122
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
64 * Add the job `function(opaque)` to the thread pool. `ctx` must be valid.
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
65 * Possibly blocks until there is room in the queue.
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
66 * Note : The function may be executed asynchronously,
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
67 * therefore, `opaque` must live until function has been completed.
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
68 */
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
69 void POOL_add(POOL_ctx* ctx, POOL_function function, void* opaque);
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
70
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
71
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
72 /*! POOL_tryAdd() :
40122
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
73 * Add the job `function(opaque)` to thread pool _if_ a worker is available.
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
74 * Returns immediately even if not (does not block).
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
75 * @return : 1 if successful, 0 if not.
73fef626dae3 zstandard: vendor python-zstandard 0.10.1
Gregory Szorc <gregory.szorc@gmail.com>
parents: 37495
diff changeset
76 */
37495
b1fb341d8a61 zstandard: vendor python-zstandard 0.9.0
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30924
diff changeset
77 int POOL_tryAdd(POOL_ctx* ctx, POOL_function function, void* opaque);
30924
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
78
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
79
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
80 #if defined (__cplusplus)
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
81 }
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
82 #endif
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
83
c32454d69b85 zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
84 #endif