52 lines
872 B
C
Executable File
52 lines
872 B
C
Executable File
#include <sys/mutex.h>
|
|
#include <sys/atomic.h>
|
|
#include <sys/systick.h>
|
|
#include <sys/errno.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
APICALL mutex_lock(MUTEX *mutex)
|
|
{
|
|
if (!mutex)
|
|
return -1;
|
|
|
|
while (1)
|
|
{
|
|
{
|
|
ATOMIC
|
|
|
|
if ((mutex->thread == NULL) || (mutex->thread == current_thread()))
|
|
{
|
|
mutex->thread = current_thread();
|
|
mutex->locked++;
|
|
|
|
return 0;
|
|
};
|
|
};
|
|
wait_ms(0);
|
|
};
|
|
};
|
|
|
|
APICALL mutex_lock_timeout(MUTEX *mutex,int32_t timeout){
|
|
systick_t timeend = systick_ticks() + timeout;
|
|
|
|
if (!mutex)
|
|
return -1;
|
|
|
|
while ( (timeout == -1) || (systick_ticks() < timeend) ){
|
|
{
|
|
ATOMIC
|
|
|
|
if (((volatile avrThread*)mutex->thread == NULL) || ((volatile avrThread*)mutex->thread == (volatile avrThread*)current_thread()))
|
|
{
|
|
mutex->thread = current_thread();
|
|
mutex->locked++;
|
|
return 0;
|
|
};
|
|
};
|
|
wait_ms(0);
|
|
};
|
|
return -ETIMEOUT;
|
|
};
|
|
|