epicsAtomicOSD.h File Reference

#include <libComAPI.h>
#include "epicsAtomicDefault.h"

Include dependency graph for epicsAtomicOSD.h:

Go to the source code of this file.

Classes
struct	EpicsAtomicLockKey

Macros
#define	EPICS_ATOMIC_OS_NAME   "POSIX"

Typedefs
typedef struct EpicsAtomicLockKey	EpicsAtomicLockKey

Functions
LIBCOM_API void	epicsAtomicLock (struct EpicsAtomicLockKey *)
LIBCOM_API void	epicsAtomicUnlock (struct EpicsAtomicLockKey *)
LIBCOM_API void	epicsAtomicMemoryBarrierFallback (void)
EPICS_ATOMIC_INLINE void	epicsAtomicReadMemoryBarrier (void)
EPICS_ATOMIC_INLINE void	epicsAtomicWriteMemoryBarrier (void)

Macro Definition Documentation

#define EPICS_ATOMIC_OS_NAME   "POSIX"

Definition at line 21 of file epicsAtomicOSD.h.

Typedef Documentation

typedef struct EpicsAtomicLockKey EpicsAtomicLockKey

Function Documentation

LIBCOM_API void epicsAtomicLock

(

struct 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 );
    }
}

LIBCOM_API void epicsAtomicMemoryBarrierFallback

(

void

)

Definition at line 70 of file epicsAtomicOSD.cpp.

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

EPICS_ATOMIC_INLINE void epicsAtomicReadMemoryBarrier

(

void

)

Definition at line 34 of file epicsAtomicOSD.h.

{
    epicsAtomicMemoryBarrierFallback();
}

LIBCOM_API void epicsAtomicUnlock

(

struct EpicsAtomicLockKey *

)

Definition at line 59 of file epicsAtomicOSD.cpp.

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

EPICS_ATOMIC_INLINE void epicsAtomicWriteMemoryBarrier

(

void

)

Definition at line 41 of file epicsAtomicOSD.h.

{
    epicsAtomicMemoryBarrierFallback();
}