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Copy pathpool.h
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74 lines (58 loc) · 2.09 KB
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/*
* Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
#ifndef POOL_H
#define POOL_H
#if defined (__cplusplus)
extern "C" {
#endif
#include <stddef.h> /* size_t */
#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_customMem */
#include "zstd.h"
typedef struct POOL_ctx_s POOL_ctx;
/*! POOL_create() :
* Create a thread pool with at most `numThreads` threads.
* `numThreads` must be at least 1.
* The maximum number of queued jobs before blocking is `queueSize`.
* @return : POOL_ctx pointer on success, else NULL.
*/
POOL_ctx* POOL_create(size_t numThreads, size_t queueSize);
POOL_ctx* POOL_create_advanced(size_t numThreads, size_t queueSize, ZSTD_customMem customMem);
/*! POOL_free() :
Free a thread pool returned by POOL_create().
*/
void POOL_free(POOL_ctx* ctx);
/*! POOL_sizeof() :
return memory usage of pool returned by POOL_create().
*/
size_t POOL_sizeof(POOL_ctx* ctx);
/*! POOL_function :
The function type that can be added to a thread pool.
*/
typedef void (*POOL_function)(void*);
/*! POOL_add_function :
The function type for a generic thread pool add function.
*/
typedef void (*POOL_add_function)(void*, POOL_function, void*);
/*! POOL_add() :
Add the job `function(opaque)` to the thread pool. `ctx` must be valid.
Possibly blocks until there is room in the queue.
Note : The function may be executed asynchronously, so `opaque` must live until the function has been completed.
*/
void POOL_add(POOL_ctx* ctx, POOL_function function, void* opaque);
/*! POOL_tryAdd() :
Add the job `function(opaque)` to the thread pool if a worker is available.
return immediately otherwise.
@return : 1 if successful, 0 if not.
*/
int POOL_tryAdd(POOL_ctx* ctx, POOL_function function, void* opaque);
#if defined (__cplusplus)
}
#endif
#endif