RTDECL(int) RTSemRWCreateEx(PRTSEMRW phRWSem, uint32_t fFlags,
RTLOCKVALCLASS hClass, uint32_t uSubClass, const char *pszNameFmt, ...)
{
AssertReturn(!(fFlags & ~RTSEMRW_FLAGS_NO_LOCK_VAL), VERR_INVALID_PARAMETER);
/*
* Allocate handle.
*/
int rc;
struct RTSEMRWINTERNAL *pThis = (struct RTSEMRWINTERNAL *)RTMemAlloc(sizeof(struct RTSEMRWINTERNAL));
if (pThis)
{
/*
* Create the rwlock.
*/
pthread_rwlockattr_t Attr;
rc = pthread_rwlockattr_init(&Attr);
if (!rc)
{
rc = pthread_rwlock_init(&pThis->RWLock, &Attr);
if (!rc)
{
pThis->u32Magic = RTSEMRW_MAGIC;
pThis->cReaders = 0;
pThis->cWrites = 0;
pThis->cWriterReads = 0;
pThis->Writer = (pthread_t)-1;
#ifdef RTSEMRW_STRICT
bool const fLVEnabled = !(fFlags & RTSEMRW_FLAGS_NO_LOCK_VAL);
if (!pszNameFmt)
{
static uint32_t volatile s_iSemRWAnon = 0;
uint32_t i = ASMAtomicIncU32(&s_iSemRWAnon) - 1;
RTLockValidatorRecExclInit(&pThis->ValidatorWrite, hClass, uSubClass, pThis,
fLVEnabled, "RTSemRW-%u", i);
RTLockValidatorRecSharedInit(&pThis->ValidatorRead, hClass, uSubClass, pThis,
false /*fSignaller*/, fLVEnabled, "RTSemRW-%u", i);
}
else
{
va_list va;
va_start(va, pszNameFmt);
RTLockValidatorRecExclInitV(&pThis->ValidatorWrite, hClass, uSubClass, pThis,
fLVEnabled, pszNameFmt, va);
va_end(va);
va_start(va, pszNameFmt);
RTLockValidatorRecSharedInitV(&pThis->ValidatorRead, hClass, uSubClass, pThis,
false /*fSignaller*/, fLVEnabled, pszNameFmt, va);
va_end(va);
}
RTLockValidatorRecMakeSiblings(&pThis->ValidatorWrite.Core, &pThis->ValidatorRead.Core);
#endif
*phRWSem = pThis;
return VINF_SUCCESS;
}
}
rc = RTErrConvertFromErrno(rc);
RTMemFree(pThis);
}
else
rc = VERR_NO_MEMORY;
return rc;
}
RTDECL(int) RTSemRWCreateEx(PRTSEMRW phRWSem, uint32_t fFlags,
RTLOCKVALCLASS hClass, uint32_t uSubClass, const char *pszNameFmt, ...)
{
AssertReturn(!(fFlags & ~RTSEMRW_FLAGS_NO_LOCK_VAL), VERR_INVALID_PARAMETER);
/*
* Allocate memory.
*/
int rc;
struct RTSEMRWINTERNAL *pThis = (struct RTSEMRWINTERNAL *)RTMemAlloc(sizeof(struct RTSEMRWINTERNAL));
if (pThis)
{
/*
* Create the semaphores.
*/
rc = RTSemEventCreateEx(&pThis->WriteEvent, RTSEMEVENT_FLAGS_NO_LOCK_VAL, NIL_RTLOCKVALCLASS, NULL);
if (RT_SUCCESS(rc))
{
rc = RTSemEventMultiCreateEx(&pThis->ReadEvent, RTSEMEVENT_FLAGS_NO_LOCK_VAL, NIL_RTLOCKVALCLASS, NULL);
if (RT_SUCCESS(rc))
{
rc = RTCritSectInitEx(&pThis->CritSect, RTCRITSECT_FLAGS_NO_LOCK_VAL,
NIL_RTLOCKVALCLASS, RTLOCKVAL_SUB_CLASS_NONE, NULL);
if (RT_SUCCESS(rc))
{
/*
* Signal the read semaphore and initialize other variables.
*/
rc = RTSemEventMultiSignal(pThis->ReadEvent);
if (RT_SUCCESS(rc))
{
pThis->u32Padding = UINT32_C(0xa5a55a5a);
pThis->cReads = 0;
pThis->cWrites = 0;
pThis->cWriterReads = 0;
pThis->cWritesWaiting = 0;
pThis->hWriter = NIL_RTNATIVETHREAD;
pThis->fNeedResetReadEvent = true;
pThis->u32Magic = RTSEMRW_MAGIC;
#ifdef RTSEMRW_STRICT
bool const fLVEnabled = !(fFlags & RTSEMRW_FLAGS_NO_LOCK_VAL);
if (!pszNameFmt)
{
static uint32_t volatile s_iSemRWAnon = 0;
uint32_t i = ASMAtomicIncU32(&s_iSemRWAnon) - 1;
RTLockValidatorRecExclInit(&pThis->ValidatorWrite, hClass, uSubClass, pThis,
fLVEnabled, "RTSemRW-%u", i);
RTLockValidatorRecSharedInit(&pThis->ValidatorRead, hClass, uSubClass, pThis,
false /*fSignaller*/, fLVEnabled, "RTSemRW-%u", i);
}
else
{
va_list va;
va_start(va, pszNameFmt);
RTLockValidatorRecExclInitV(&pThis->ValidatorWrite, hClass, uSubClass, pThis,
fLVEnabled, pszNameFmt, va);
va_end(va);
va_start(va, pszNameFmt);
RTLockValidatorRecSharedInitV(&pThis->ValidatorRead, hClass, uSubClass, pThis,
false /*fSignaller*/, fLVEnabled, pszNameFmt, va);
va_end(va);
}
RTLockValidatorRecMakeSiblings(&pThis->ValidatorWrite.Core, &pThis->ValidatorRead.Core);
#endif
*phRWSem = pThis;
return VINF_SUCCESS;
}
RTCritSectDelete(&pThis->CritSect);
}
RTSemEventMultiDestroy(pThis->ReadEvent);
}
RTSemEventDestroy(pThis->WriteEvent);
}
RTMemFree(pThis);
}
else
rc = VERR_NO_MEMORY;
return rc;
}
RTDECL(int) RTSemEventMultiCreateEx(PRTSEMEVENTMULTI phEventMultiSem, uint32_t fFlags, RTLOCKVALCLASS hClass,
const char *pszNameFmt, ...)
{
AssertReturn(!(fFlags & ~RTSEMEVENTMULTI_FLAGS_NO_LOCK_VAL), VERR_INVALID_PARAMETER);
/*
* Allocate semaphore handle.
*/
int rc;
struct RTSEMEVENTMULTIINTERNAL *pThis = (struct RTSEMEVENTMULTIINTERNAL *)RTMemAlloc(sizeof(struct RTSEMEVENTMULTIINTERNAL));
if (pThis)
{
/*
* Create the condition variable.
*/
pthread_condattr_t CondAttr;
rc = pthread_condattr_init(&CondAttr);
if (!rc)
{
#if defined(CLOCK_MONOTONIC) && defined(IPRT_HAVE_PTHREAD_CONDATTR_SETCLOCK)
/* ASSUMES RTTimeSystemNanoTS() == RTTimeNanoTS() == clock_gettime(CLOCK_MONOTONIC). */
rc = pthread_condattr_setclock(&CondAttr, CLOCK_MONOTONIC);
pThis->fMonotonicClock = rc == 0;
#else
pThis->fMonotonicClock = false;
#endif
rc = pthread_cond_init(&pThis->Cond, &CondAttr);
if (!rc)
{
/*
* Create the semaphore.
*/
pthread_mutexattr_t MutexAttr;
rc = pthread_mutexattr_init(&MutexAttr);
if (!rc)
{
rc = pthread_mutex_init(&pThis->Mutex, &MutexAttr);
if (!rc)
{
pthread_mutexattr_destroy(&MutexAttr);
pthread_condattr_destroy(&CondAttr);
ASMAtomicXchgU32(&pThis->u32State, EVENTMULTI_STATE_NOT_SIGNALED);
ASMAtomicXchgU32(&pThis->cWaiters, 0);
#ifdef RTSEMEVENTMULTI_STRICT
if (!pszNameFmt)
{
static uint32_t volatile s_iSemEventMultiAnon = 0;
RTLockValidatorRecSharedInit(&pThis->Signallers, hClass, RTLOCKVAL_SUB_CLASS_ANY, pThis,
true /*fSignaller*/, !(fFlags & RTSEMEVENTMULTI_FLAGS_NO_LOCK_VAL),
"RTSemEventMulti-%u", ASMAtomicIncU32(&s_iSemEventMultiAnon) - 1);
}
else
{
va_list va;
va_start(va, pszNameFmt);
RTLockValidatorRecSharedInitV(&pThis->Signallers, hClass, RTLOCKVAL_SUB_CLASS_ANY, pThis,
true /*fSignaller*/, !(fFlags & RTSEMEVENTMULTI_FLAGS_NO_LOCK_VAL),
pszNameFmt, va);
va_end(va);
}
pThis->fEverHadSignallers = false;
#endif
*phEventMultiSem = pThis;
return VINF_SUCCESS;
}
pthread_mutexattr_destroy(&MutexAttr);
}
pthread_cond_destroy(&pThis->Cond);
}
pthread_condattr_destroy(&CondAttr);
}
rc = RTErrConvertFromErrno(rc);
RTMemFree(pThis);
}
else
rc = VERR_NO_MEMORY;
return rc;
}
RTDECL(int) RTSemEventCreateEx(PRTSEMEVENT phEventSem, uint32_t fFlags, RTLOCKVALCLASS hClass, const char *pszNameFmt, ...)
{
AssertReturn(!(fFlags & ~(RTSEMEVENT_FLAGS_NO_LOCK_VAL | RTSEMEVENT_FLAGS_BOOTSTRAP_HACK)), VERR_INVALID_PARAMETER);
Assert(!(fFlags & RTSEMEVENT_FLAGS_BOOTSTRAP_HACK) || (fFlags & RTSEMEVENT_FLAGS_NO_LOCK_VAL));
/*
* Allocate semaphore handle.
*/
int rc;
struct RTSEMEVENTINTERNAL *pThis;
if (!(fFlags & RTSEMEVENT_FLAGS_BOOTSTRAP_HACK))
pThis = (struct RTSEMEVENTINTERNAL *)RTMemAlloc(sizeof(*pThis));
else
pThis = (struct RTSEMEVENTINTERNAL *)rtMemBaseAlloc(sizeof(*pThis));
if (pThis)
{
/*
* Create the condition variable.
*/
rc = pthread_cond_init(&pThis->Cond, NULL);
if (!rc)
{
/*
* Create the semaphore.
*/
rc = pthread_mutex_init(&pThis->Mutex, NULL);
if (!rc)
{
ASMAtomicWriteU32(&pThis->u32State, EVENT_STATE_NOT_SIGNALED);
ASMAtomicWriteU32(&pThis->cWaiters, 0);
pThis->fFlags = fFlags;
#ifdef RTSEMEVENT_STRICT
if (!pszNameFmt)
{
static uint32_t volatile s_iSemEventAnon = 0;
RTLockValidatorRecSharedInit(&pThis->Signallers, hClass, RTLOCKVAL_SUB_CLASS_ANY, pThis,
true /*fSignaller*/, !(fFlags & RTSEMEVENT_FLAGS_NO_LOCK_VAL),
"RTSemEvent-%u", ASMAtomicIncU32(&s_iSemEventAnon) - 1);
}
else
{
va_list va;
va_start(va, pszNameFmt);
RTLockValidatorRecSharedInitV(&pThis->Signallers, hClass, RTLOCKVAL_SUB_CLASS_ANY, pThis,
true /*fSignaller*/, !(fFlags & RTSEMEVENT_FLAGS_NO_LOCK_VAL),
pszNameFmt, va);
va_end(va);
}
pThis->fEverHadSignallers = false;
#else
RT_NOREF_PV(hClass); RT_NOREF_PV(pszNameFmt);
#endif
*phEventSem = pThis;
return VINF_SUCCESS;
}
pthread_cond_destroy(&pThis->Cond);
}
rc = RTErrConvertFromErrno(rc);
if (!(fFlags & RTSEMEVENT_FLAGS_BOOTSTRAP_HACK))
RTMemFree(pThis);
else
rtMemBaseFree(pThis);
}
else
rc = VERR_NO_MEMORY;
return rc;
}
