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annotate contrib/python-zstandard/zstd/common/pool.h @ 53042:cdd7bf612c7b stable tip

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bundle-spec: properly format boolean parameter (issue6960) This was breaking automatic clone bundle generation. This changeset fixes it and add a test to catch it in the future.
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Tue, 11 Mar 2025 02:29:42 +0100
parents 73fef626dae3
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
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3 * All rights reserved.
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4 *
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5 * This source code is licensed under both the BSD-style license (found in the
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6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
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7 * in the COPYING file in the root directory of this source tree).
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8 * You may select, at your option, one of the above-listed licenses.
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9 */
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11 #ifndef POOL_H
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12 #define POOL_H
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13
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14 #if defined (__cplusplus)
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15 extern "C" {
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16 #endif
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19 #include <stddef.h> /* size_t */
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20 #define ZSTD_STATIC_LINKING_ONLY /* ZSTD_customMem */
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21 #include "zstd.h"
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22
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23 typedef struct POOL_ctx_s POOL_ctx;
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25 /*! POOL_create() :
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26 * Create a thread pool with at most `numThreads` threads.
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27 * `numThreads` must be at least 1.
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28 * The maximum number of queued jobs before blocking is `queueSize`.
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29 * @return : POOL_ctx pointer on success, else NULL.
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30 */
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31 POOL_ctx* POOL_create(size_t numThreads, size_t queueSize);
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32
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33 POOL_ctx* POOL_create_advanced(size_t numThreads, size_t queueSize,
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34 ZSTD_customMem customMem);
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35
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36 /*! POOL_free() :
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37 * Free a thread pool returned by POOL_create().
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38 */
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39 void POOL_free(POOL_ctx* ctx);
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40
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41 /*! POOL_resize() :
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42 * Expands or shrinks pool's number of threads.
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43 * This is more efficient than releasing + creating a new context,
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44 * since it tries to preserve and re-use existing threads.
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45 * `numThreads` must be at least 1.
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46 * @return : 0 when resize was successful,
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47 * !0 (typically 1) if there is an error.
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48 * note : only numThreads can be resized, queueSize remains unchanged.
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49 */
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50 int POOL_resize(POOL_ctx* ctx, size_t numThreads);
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51
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52 /*! POOL_sizeof() :
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53 * @return threadpool memory usage
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54 * note : compatible with NULL (returns 0 in this case)
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55 */
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56 size_t POOL_sizeof(POOL_ctx* ctx);
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57
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58 /*! POOL_function :
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59 * The function type that can be added to a thread pool.
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60 */
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61 typedef void (*POOL_function)(void*);
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62
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63 /*! POOL_add() :
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64 * Add the job `function(opaque)` to the thread pool. `ctx` must be valid.
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65 * Possibly blocks until there is room in the queue.
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66 * Note : The function may be executed asynchronously,
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67 * therefore, `opaque` must live until function has been completed.
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68 */
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69 void POOL_add(POOL_ctx* ctx, POOL_function function, void* opaque);
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70
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71
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72 /*! POOL_tryAdd() :
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73 * Add the job `function(opaque)` to thread pool _if_ a worker is available.
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74 * Returns immediately even if not (does not block).
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75 * @return : 1 if successful, 0 if not.
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76 */
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77 int POOL_tryAdd(POOL_ctx* ctx, POOL_function function, void* opaque);
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78
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79
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80 #if defined (__cplusplus)
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81 }
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82 #endif
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83
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84 #endif