This repository has been archived by the owner on May 4, 2018. It is now read-only.
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
unix, windows: add semaphore functions
- Loading branch information
1 parent
7d97ba8
commit c76c206
Showing
8 changed files
with
213 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,111 @@ | ||
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved. | ||
* | ||
* Permission is hereby granted, free of charge, to any person obtaining a copy | ||
* of this software and associated documentation files (the "Software"), to | ||
* deal in the Software without restriction, including without limitation the | ||
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or | ||
* sell copies of the Software, and to permit persons to whom the Software is | ||
* furnished to do so, subject to the following conditions: | ||
* | ||
* The above copyright notice and this permission notice shall be included in | ||
* all copies or substantial portions of the Software. | ||
* | ||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | ||
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | ||
* IN THE SOFTWARE. | ||
*/ | ||
|
||
#include "uv.h" | ||
#include "task.h" | ||
|
||
#include <stdlib.h> | ||
#include <string.h> | ||
|
||
typedef struct { | ||
uv_mutex_t mutex; | ||
uv_sem_t sem; | ||
int delay; | ||
volatile int posted; | ||
} worker_config; | ||
|
||
|
||
static void worker(void* arg) { | ||
worker_config* c = arg; | ||
|
||
if (c->delay) | ||
uv_sleep(c->delay); | ||
|
||
uv_mutex_lock(&c->mutex); | ||
ASSERT(c->posted == 0); | ||
uv_sem_post(&c->sem); | ||
c->posted = 1; | ||
uv_mutex_unlock(&c->mutex); | ||
} | ||
|
||
|
||
TEST_IMPL(semaphore_1) { | ||
uv_thread_t thread; | ||
worker_config wc; | ||
|
||
memset(&wc, 0, sizeof(wc)); | ||
|
||
ASSERT(0 == uv_sem_init(&wc.sem, 0)); | ||
ASSERT(0 == uv_mutex_init(&wc.mutex)); | ||
ASSERT(0 == uv_thread_create(&thread, worker, &wc)); | ||
|
||
uv_sleep(100); | ||
uv_mutex_lock(&wc.mutex); | ||
ASSERT(wc.posted == 1); | ||
uv_sem_wait(&wc.sem); /* should not block */ | ||
uv_mutex_unlock(&wc.mutex); /* ergo, it should be ok to unlock after wait */ | ||
|
||
ASSERT(0 == uv_thread_join(&thread)); | ||
uv_mutex_destroy(&wc.mutex); | ||
uv_sem_destroy(&wc.sem); | ||
|
||
return 0; | ||
} | ||
|
||
|
||
TEST_IMPL(semaphore_2) { | ||
uv_thread_t thread; | ||
worker_config wc; | ||
|
||
memset(&wc, 0, sizeof(wc)); | ||
wc.delay = 100; | ||
|
||
ASSERT(0 == uv_sem_init(&wc.sem, 0)); | ||
ASSERT(0 == uv_mutex_init(&wc.mutex)); | ||
ASSERT(0 == uv_thread_create(&thread, worker, &wc)); | ||
|
||
uv_sem_wait(&wc.sem); | ||
|
||
ASSERT(0 == uv_thread_join(&thread)); | ||
uv_mutex_destroy(&wc.mutex); | ||
uv_sem_destroy(&wc.sem); | ||
|
||
return 0; | ||
} | ||
|
||
|
||
TEST_IMPL(semaphore_3) { | ||
uv_sem_t sem; | ||
|
||
ASSERT(0 == uv_sem_init(&sem, 3)); | ||
uv_sem_wait(&sem); /* should not block */ | ||
uv_sem_wait(&sem); /* should not block */ | ||
ASSERT(0 == uv_sem_trywait(&sem)); | ||
ASSERT(-1 == uv_sem_trywait(&sem)); | ||
|
||
uv_sem_post(&sem); | ||
ASSERT(0 == uv_sem_trywait(&sem)); | ||
ASSERT(-1 == uv_sem_trywait(&sem)); | ||
|
||
uv_sem_destroy(&sem); | ||
|
||
return 0; | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters