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CoreMutex cleanup and add to build

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This commit is contained in:
Ali Mashtizadeh 2015-01-30 20:44:01 -08:00
parent 8b45f56bf5
commit bdb6a08704
3 changed files with 15 additions and 11 deletions
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12
include/core/mutex.h
View File

@ -2,14 +2,14 @@
#ifndef __CORE_MUTEX_H__
#define __CORE_MUTEX_H__
typedef struct Mutex {
typedef struct CoreMutex {
uint64_t lock;
} Mutex;
} CoreMutex;
int CoreMutex_Init(Mutex *mtx);
void CoreMutex_Lock(Mutex *mtx);
bool CoreMutex_TryLock(Mutex *mtx);
void CoreMutex_Unlock(Mutex *mtx);
void CoreMutex_Init(CoreMutex *mtx);
void CoreMutex_Lock(CoreMutex *mtx);
bool CoreMutex_TryLock(CoreMutex *mtx);
void CoreMutex_Unlock(CoreMutex *mtx);
#endif /* __CORE_MUTEX_H__ */

1
lib/libc/SConscript
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@ -9,6 +9,7 @@ src = [ ]
src_common = [
"abort.c",
"assert.c",
"core/mutex.c",
"dir.c",
"exit.c",
"file.c",

13
lib/libc/core/mutex.c
View File

@ -2,23 +2,26 @@
#include <stdbool.h>
#include <stdint.h>
#include <syscall.h>
#include <core/mutex.h>
int
CoreMutex_Init(Mutex *mtx)
void
CoreMutex_Init(CoreMutex *mtx)
{
mtx->lock = 0;
}
void
CoreMutex_Lock(Mutex *mtx)
CoreMutex_Lock(CoreMutex *mtx)
{
while (__sync_lock_test_and_set(&mtx->lock, 1) == 1) {
OSThreadSleep(0);
}
}
bool
CoreMutex_TryLock(Mutex *mtx)
CoreMutex_TryLock(CoreMutex *mtx)
{
if (__sync_lock_test_and_set(&mtx->lock, 1) == 1) {
return false;
@ -28,7 +31,7 @@ CoreMutex_TryLock(Mutex *mtx)
}
void
CoreMutex_Unlock(Mutex *mtx)
CoreMutex_Unlock(CoreMutex *mtx)
{
__sync_lock_release(&mtx->lock);
}