d6b92ffa99
kernel APIs. List of sources used: 1) rdma-core was cloned from "https://github.com/linux-rdma/rdma-core.git" Top commit d65138ef93af30b3ea249f3a84aa6a24ba7f8a75 2) OpenSM was cloned from git://git.openfabrics.org/~halr/opensm.git Top commit 85f841cf209f791c89a075048a907020e924528d 3) libibmad was cloned from "git://git.openfabrics.org/~iraweiny/libibmad.git" Tag 1.3.13 with some additional patches from Mellanox. 4) infiniband-diags was cloned from "git://git.openfabrics.org/~iraweiny/infiniband-diags.git" Tag 1.6.7 with some additional patches from Mellanox. Added the required Makefiles for building and installing. Sponsored by: Mellanox Technologies
151 lines
4.2 KiB
C
151 lines
4.2 KiB
C
/*
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* Copyright (c) 2004-2007 Voltaire, Inc. All rights reserved.
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* Copyright (c) 2002-2005 Mellanox Technologies LTD. All rights reserved.
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* Copyright (c) 1996-2003 Intel Corporation. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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/*
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* Abstract:
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* Implementation of thread pool.
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*
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*/
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <stdlib.h>
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#include <string.h>
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#include <pthread.h>
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#include <complib/cl_threadpool.h>
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static void cleanup_mutex(void *arg)
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{
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pthread_mutex_unlock(&((cl_thread_pool_t *) arg)->mutex);
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}
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static void *thread_pool_routine(void *context)
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{
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cl_thread_pool_t *p_thread_pool = (cl_thread_pool_t *) context;
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do {
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pthread_mutex_lock(&p_thread_pool->mutex);
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pthread_cleanup_push(cleanup_mutex, p_thread_pool);
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while (!p_thread_pool->events)
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pthread_cond_wait(&p_thread_pool->cond,
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&p_thread_pool->mutex);
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p_thread_pool->events--;
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pthread_cleanup_pop(1);
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/* The event has been signalled. Invoke the callback. */
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(*p_thread_pool->pfn_callback) (p_thread_pool->context);
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} while (1);
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return NULL;
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}
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cl_status_t cl_thread_pool_init(IN cl_thread_pool_t * const p_thread_pool,
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IN unsigned count,
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IN void (*pfn_callback) (void *),
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IN void *context, IN const char *const name)
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{
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int i;
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CL_ASSERT(p_thread_pool);
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CL_ASSERT(pfn_callback);
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memset(p_thread_pool, 0, sizeof(*p_thread_pool));
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if (!count)
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count = cl_proc_count();
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pthread_mutex_init(&p_thread_pool->mutex, NULL);
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pthread_cond_init(&p_thread_pool->cond, NULL);
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p_thread_pool->events = 0;
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p_thread_pool->pfn_callback = pfn_callback;
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p_thread_pool->context = context;
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p_thread_pool->tid = calloc(count, sizeof(*p_thread_pool->tid));
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if (!p_thread_pool->tid) {
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cl_thread_pool_destroy(p_thread_pool);
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return CL_INSUFFICIENT_MEMORY;
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}
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p_thread_pool->running_count = count;
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for (i = 0; i < count; i++) {
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if (pthread_create(&p_thread_pool->tid[i], NULL,
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thread_pool_routine, p_thread_pool) != 0) {
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cl_thread_pool_destroy(p_thread_pool);
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return CL_INSUFFICIENT_RESOURCES;
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}
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}
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return (CL_SUCCESS);
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}
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void cl_thread_pool_destroy(IN cl_thread_pool_t * const p_thread_pool)
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{
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int i;
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CL_ASSERT(p_thread_pool);
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for (i = 0; i < p_thread_pool->running_count; i++)
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if (p_thread_pool->tid[i])
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pthread_cancel(p_thread_pool->tid[i]);
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for (i = 0; i < p_thread_pool->running_count; i++)
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if (p_thread_pool->tid[i])
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pthread_join(p_thread_pool->tid[i], NULL);
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p_thread_pool->running_count = 0;
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free(p_thread_pool->tid);
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pthread_cond_destroy(&p_thread_pool->cond);
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pthread_mutex_destroy(&p_thread_pool->mutex);
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p_thread_pool->events = 0;
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}
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cl_status_t cl_thread_pool_signal(IN cl_thread_pool_t * const p_thread_pool)
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{
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int ret;
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CL_ASSERT(p_thread_pool);
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pthread_mutex_lock(&p_thread_pool->mutex);
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p_thread_pool->events++;
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ret = pthread_cond_signal(&p_thread_pool->cond);
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pthread_mutex_unlock(&p_thread_pool->mutex);
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return ret;
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}
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