epicsAtomicOSD.cpp File Reference

#include <errno.h>
#include <unistd.h>
#include <pthread.h>
#include "epicsAssert.h"
#include "epicsAtomic.h"

Include dependency graph for epicsAtomicOSD.cpp:

Go to the source code of this file.

Functions
void	epicsAtomicLock (EpicsAtomicLockKey *)
void	epicsAtomicUnlock (EpicsAtomicLockKey *)
void	epicsAtomicMemoryBarrierFallback (void)

Function Documentation

void epicsAtomicLock

(

EpicsAtomicLockKey *

)

Definition at line 42 of file epicsAtomicOSD.cpp.

{
    unsigned countDown = 1000u;
    int status;
    while ( true ) {
        status = pthread_mutex_lock ( & mutex );
        if ( status == 0 ) return;
        assert ( status == EINTR );
        struct timespec retryDelay = { 0, 100000000 };
        struct timespec remainingDelay;
        while (nanosleep(&retryDelay, &remainingDelay) == -1 && errno == EINTR)
            retryDelay = remainingDelay;
        countDown--;
        assert ( countDown );
    }
}

void epicsAtomicMemoryBarrierFallback

(

void

)

Definition at line 70 of file epicsAtomicOSD.cpp.

{
    EpicsAtomicLockKey key;
    epicsAtomicLock ( & key  );
    epicsAtomicUnlock ( & key  );
}

void epicsAtomicUnlock

(

EpicsAtomicLockKey *

)

Definition at line 59 of file epicsAtomicOSD.cpp.

{
    const int status = pthread_mutex_unlock ( & mutex );
    assert ( status == 0 );
}