*
* Copyright (C) 2015 Xamarin Inc
*
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License 2.0 as published by the Free Software Foundation;
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License 2.0 along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Licensed under the MIT license. See LICENSE file in the project root for full license information.
*/
#include "config.h"
#include "mono/sgen/sgen-gc.h"
#include "mono/sgen/sgen-thread-pool.h"
#include "mono/sgen/sgen-pointer-queue.h"
-#include "mono/utils/mono-mutex.h"
+#include "mono/utils/mono-os-mutex.h"
#ifndef SGEN_WITHOUT_MONO
#include "mono/utils/mono-threads.h"
#endif
static SgenThreadPoolIdleJobFunc idle_job_func;
static SgenThreadPoolContinueIdleJobFunc continue_idle_job_func;
+static volatile gboolean threadpool_shutdown;
+static volatile gboolean thread_finished;
+
enum {
STATE_WAITING,
STATE_IN_PROGRESS,
get_job_and_set_in_progress (void)
{
for (size_t i = 0; i < job_queue.next_slot; ++i) {
- SgenThreadPoolJob *job = job_queue.data [i];
+ SgenThreadPoolJob *job = (SgenThreadPoolJob *)job_queue.data [i];
if (job->state == STATE_WAITING) {
job->state = STATE_IN_PROGRESS;
return job;
{
thread_init_func (thread_data);
- mono_mutex_lock (&lock);
+ mono_os_mutex_lock (&lock);
for (;;) {
/*
* It's important that we check the continue idle flag with the lock held.
gboolean do_idle = continue_idle_job ();
SgenThreadPoolJob *job = get_job_and_set_in_progress ();
- if (!job && !do_idle) {
+ if (!job && !do_idle && !threadpool_shutdown) {
/*
* pthread_cond_wait() can return successfully despite the condition
* not being signalled, so we have to run this in a loop until we
* really have work to do.
*/
- mono_cond_wait (&work_cond, &lock);
+ mono_os_cond_wait (&work_cond, &lock);
continue;
}
- mono_mutex_unlock (&lock);
+ mono_os_mutex_unlock (&lock);
if (job) {
job->func (thread_data, job);
- mono_mutex_lock (&lock);
+ mono_os_mutex_lock (&lock);
SGEN_ASSERT (0, job->state == STATE_IN_PROGRESS, "The job should still be in progress.");
job->state = STATE_DONE;
* Only the main GC thread will ever wait on the done condition, so we don't
* have to broadcast.
*/
- mono_cond_signal (&done_cond);
- } else {
- SGEN_ASSERT (0, do_idle, "Why did we unlock if we still have to wait for idle?");
+ mono_os_cond_signal (&done_cond);
+ } else if (do_idle) {
SGEN_ASSERT (0, idle_job_func, "Why do we have idle work when there's no idle job function?");
do {
idle_job_func (thread_data);
do_idle = continue_idle_job ();
} while (do_idle && !job_queue.next_slot);
- mono_mutex_lock (&lock);
+ mono_os_mutex_lock (&lock);
if (!do_idle)
- mono_cond_signal (&done_cond);
+ mono_os_cond_signal (&done_cond);
+ } else {
+ SGEN_ASSERT (0, threadpool_shutdown, "Why did we unlock if no jobs and not shutting down?");
+ mono_os_mutex_lock (&lock);
+ thread_finished = TRUE;
+ mono_os_cond_signal (&done_cond);
+ mono_os_mutex_unlock (&lock);
+ return 0;
}
}
{
SGEN_ASSERT (0, num_threads == 1, "We only support 1 thread pool thread for now.");
- mono_mutex_init (&lock);
- mono_cond_init (&work_cond, NULL);
- mono_cond_init (&done_cond, NULL);
+ mono_os_mutex_init (&lock);
+ mono_os_cond_init (&work_cond);
+ mono_os_cond_init (&done_cond);
thread_init_func = init_func;
idle_job_func = idle_func;
mono_native_thread_create (&thread, thread_func, thread_datas ? thread_datas [0] : NULL);
}
+void
+sgen_thread_pool_shutdown (void)
+{
+ if (!thread)
+ return;
+
+ mono_os_mutex_lock (&lock);
+ threadpool_shutdown = TRUE;
+ mono_os_cond_signal (&work_cond);
+ while (!thread_finished)
+ mono_os_cond_wait (&done_cond, &lock);
+ mono_os_mutex_unlock (&lock);
+
+ mono_os_mutex_destroy (&lock);
+ mono_os_cond_destroy (&work_cond);
+ mono_os_cond_destroy (&done_cond);
+}
+
SgenThreadPoolJob*
sgen_thread_pool_job_alloc (const char *name, SgenThreadPoolJobFunc func, size_t size)
{
- SgenThreadPoolJob *job = sgen_alloc_internal_dynamic (size, INTERNAL_MEM_THREAD_POOL_JOB, TRUE);
+ SgenThreadPoolJob *job = (SgenThreadPoolJob *)sgen_alloc_internal_dynamic (size, INTERNAL_MEM_THREAD_POOL_JOB, TRUE);
job->name = name;
job->size = size;
job->state = STATE_WAITING;
void
sgen_thread_pool_job_enqueue (SgenThreadPoolJob *job)
{
- mono_mutex_lock (&lock);
+ mono_os_mutex_lock (&lock);
sgen_pointer_queue_add (&job_queue, job);
/*
* FIXME: We could check whether there is a job in progress. If there is, there's
* no need to signal the condition, at least as long as we have only one thread.
*/
- mono_cond_signal (&work_cond);
+ mono_os_cond_signal (&work_cond);
- mono_mutex_unlock (&lock);
+ mono_os_mutex_unlock (&lock);
}
void
{
SGEN_ASSERT (0, job, "Where's the job?");
- mono_mutex_lock (&lock);
+ mono_os_mutex_lock (&lock);
while (find_job_in_queue (job) >= 0)
- mono_cond_wait (&done_cond, &lock);
+ mono_os_cond_wait (&done_cond, &lock);
- mono_mutex_unlock (&lock);
+ mono_os_mutex_unlock (&lock);
}
void
{
SGEN_ASSERT (0, idle_job_func, "Why are we signaling idle without an idle function?");
- mono_mutex_lock (&lock);
+ mono_os_mutex_lock (&lock);
if (continue_idle_job_func ())
- mono_cond_signal (&work_cond);
+ mono_os_cond_signal (&work_cond);
- mono_mutex_unlock (&lock);
+ mono_os_mutex_unlock (&lock);
}
void
{
SGEN_ASSERT (0, idle_job_func, "Why are we waiting for idle without an idle function?");
- mono_mutex_lock (&lock);
+ mono_os_mutex_lock (&lock);
while (continue_idle_job_func ())
- mono_cond_wait (&done_cond, &lock);
+ mono_os_cond_wait (&done_cond, &lock);
- mono_mutex_unlock (&lock);
+ mono_os_mutex_unlock (&lock);
}
void
sgen_thread_pool_wait_for_all_jobs (void)
{
- mono_mutex_lock (&lock);
+ mono_os_mutex_lock (&lock);
while (!sgen_pointer_queue_is_empty (&job_queue))
- mono_cond_wait (&done_cond, &lock);
+ mono_os_cond_wait (&done_cond, &lock);
- mono_mutex_unlock (&lock);
+ mono_os_mutex_unlock (&lock);
}
gboolean
projects / mono.git / blobdiff