2 * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
5 * This source code is licensed under both the BSD-style license (found in the
6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found
7 * in the COPYING file in the root directory of this source tree).
8 * You may select, at your option, one of the above-listed licenses.
14 #if defined (__cplusplus)
19 #include <stddef.h> /* size_t */
20 #define ZSTD_STATIC_LINKING_ONLY /* ZSTD_customMem */
23 typedef struct POOL_ctx_s POOL_ctx;
26 * Create a thread pool with at most `numThreads` threads.
27 * `numThreads` must be at least 1.
28 * The maximum number of queued jobs before blocking is `queueSize`.
29 * @return : POOL_ctx pointer on success, else NULL.
31 POOL_ctx* POOL_create(size_t numThreads, size_t queueSize);
33 POOL_ctx* POOL_create_advanced(size_t numThreads, size_t queueSize, ZSTD_customMem customMem);
36 Free a thread pool returned by POOL_create().
38 void POOL_free(POOL_ctx* ctx);
41 return memory usage of pool returned by POOL_create().
43 size_t POOL_sizeof(POOL_ctx* ctx);
46 The function type that can be added to a thread pool.
48 typedef void (*POOL_function)(void*);
49 /*! POOL_add_function :
50 The function type for a generic thread pool add function.
52 typedef void (*POOL_add_function)(void*, POOL_function, void*);
55 Add the job `function(opaque)` to the thread pool. `ctx` must be valid.
56 Possibly blocks until there is room in the queue.
57 Note : The function may be executed asynchronously, so `opaque` must live until the function has been completed.
59 void POOL_add(POOL_ctx* ctx, POOL_function function, void* opaque);
63 Add the job `function(opaque)` to the thread pool if a worker is available.
64 return immediately otherwise.
65 @return : 1 if successful, 0 if not.
67 int POOL_tryAdd(POOL_ctx* ctx, POOL_function function, void* opaque);
70 #if defined (__cplusplus)