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remove rsemaphore (#8645)

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bparker06 2019-07-30 14:53:03 -04:00 committed by GitHub
parent 3b1ec7d30e
commit 8ee1e7b39f
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3 changed files with 0 additions and 118 deletions
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1
Makefile.common
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@ -868,7 +868,6 @@ endif
ifeq ($(HAVE_THREADS), 1)
OBJ += $(LIBRETRO_COMM_DIR)/rthreads/rthreads.o \
$(LIBRETRO_COMM_DIR)/rthreads/rsemaphore.o \
gfx/video_thread_wrapper.o \
audio/audio_thread_wrapper.o
DEFINES += -DHAVE_THREADS

1
griffin/griffin.c
View File

@ -1159,7 +1159,6 @@ THREAD
#endif
#include "../libretro-common/rthreads/rthreads.c"
#include "../libretro-common/rthreads/rsemaphore.c"
#include "../gfx/video_thread_wrapper.c"
#include "../audio/audio_thread_wrapper.c"
#endif

116
libretro-common/rthreads/rsemaphore.c
View File

@ -1,116 +0,0 @@
/*
Copyright 2005 Allen B. Downey
This file contains an example program from The Little Book of
Semaphores, available from Green Tea Press, greenteapress.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see http://www.gnu.org/licenses/gpl.html
or write to the Free Software Foundation, Inc., 51 Franklin St,
Fifth Floor, Boston, MA 02110-1301 USA
*/
/* Code taken from http://greenteapress.com/semaphores/semaphore.c
* and changed to use libretro-common's mutexes and conditions.
*/
#include <stdlib.h>
#include <rthreads/rthreads.h>
#include <rthreads/rsemaphore.h>
struct ssem
{
int value;
int wakeups;
slock_t *mutex;
scond_t *cond;
};
ssem_t *ssem_new(int value)
{
ssem_t *semaphore = (ssem_t*)calloc(1, sizeof(*semaphore));
if (!semaphore)
goto error;
semaphore->value = value;
semaphore->wakeups = 0;
semaphore->mutex = slock_new();
if (!semaphore->mutex)
goto error;
semaphore->cond = scond_new();
if (!semaphore->cond)
goto error;
return semaphore;
error:
if (semaphore->mutex)
slock_free(semaphore->mutex);
semaphore->mutex = NULL;
if (semaphore)
free((void*)semaphore);
return NULL;
}
void ssem_free(ssem_t *semaphore)
{
if (!semaphore)
return;
scond_free(semaphore->cond);
slock_free(semaphore->mutex);
free((void*)semaphore);
}
void ssem_wait(ssem_t *semaphore)
{
if (!semaphore)
return;
slock_lock(semaphore->mutex);
semaphore->value--;
if (semaphore->value < 0)
{
do
{
scond_wait(semaphore->cond, semaphore->mutex);
}while (semaphore->wakeups < 1);
semaphore->wakeups--;
}
slock_unlock(semaphore->mutex);
}
void ssem_signal(ssem_t *semaphore)
{
if (!semaphore)
return;
slock_lock(semaphore->mutex);
semaphore->value++;
if (semaphore->value <= 0)
{
semaphore->wakeups++;
scond_signal(semaphore->cond);
}
slock_unlock(semaphore->mutex);
}