RTDECL(int) RTSemSpinMutexCreate(PRTSEMSPINMUTEX phSpinMtx, uint32_t fFlags)
{
RTSEMSPINMUTEXINTERNAL *pThis;
int rc;
AssertReturn(!(fFlags & ~RTSEMSPINMUTEX_FLAGS_VALID_MASK), VERR_INVALID_PARAMETER);
AssertPtr(phSpinMtx);
/*
* Allocate and initialize the structure.
*/
pThis = (RTSEMSPINMUTEXINTERNAL *)RTMemAllocZ(sizeof(*pThis));
if (!pThis)
return VERR_NO_MEMORY;
pThis->u32Magic = RTSEMSPINMUTEX_MAGIC;
pThis->fFlags = fFlags;
pThis->hOwner = NIL_RTNATIVETHREAD;
pThis->cLockers = 0;
rc = RTSemEventCreateEx(&pThis->hEventSem, RTSEMEVENT_FLAGS_NO_LOCK_VAL, NIL_RTLOCKVALCLASS, NULL);
if (RT_SUCCESS(rc))
{
*phSpinMtx = pThis;
return VINF_SUCCESS;
}
RTMemFree(pThis);
return rc;
}
RTDECL(int) RTCritSectInitEx(PRTCRITSECT pCritSect, uint32_t fFlags, RTLOCKVALCLASS hClass, uint32_t uSubClass,
const char *pszNameFmt, ...)
{
AssertReturn(!(fFlags & ~(RTCRITSECT_FLAGS_NO_NESTING | RTCRITSECT_FLAGS_NO_LOCK_VAL | RTCRITSECT_FLAGS_BOOTSTRAP_HACK | RTCRITSECT_FLAGS_NOP)),
VERR_INVALID_PARAMETER);
/*
* Initialize the structure and
*/
pCritSect->u32Magic = RTCRITSECT_MAGIC;
pCritSect->fFlags = fFlags;
pCritSect->cNestings = 0;
pCritSect->cLockers = -1;
pCritSect->NativeThreadOwner = NIL_RTNATIVETHREAD;
pCritSect->pValidatorRec = NULL;
int rc = VINF_SUCCESS;
#ifdef RTCRITSECT_STRICT
if (!(fFlags & (RTCRITSECT_FLAGS_BOOTSTRAP_HACK | RTCRITSECT_FLAGS_NOP)))
{
if (!pszNameFmt)
{
static uint32_t volatile s_iCritSectAnon = 0;
rc = RTLockValidatorRecExclCreate(&pCritSect->pValidatorRec, hClass, uSubClass, pCritSect,
!(fFlags & RTCRITSECT_FLAGS_NO_LOCK_VAL),
"RTCritSect-%u", ASMAtomicIncU32(&s_iCritSectAnon) - 1);
}
else
{
va_list va;
va_start(va, pszNameFmt);
rc = RTLockValidatorRecExclCreateV(&pCritSect->pValidatorRec, hClass, uSubClass, pCritSect,
!(fFlags & RTCRITSECT_FLAGS_NO_LOCK_VAL), pszNameFmt, va);
va_end(va);
}
}
#endif
if (RT_SUCCESS(rc))
{
rc = RTSemEventCreateEx(&pCritSect->EventSem,
fFlags & RTCRITSECT_FLAGS_BOOTSTRAP_HACK
? RTSEMEVENT_FLAGS_NO_LOCK_VAL | RTSEMEVENT_FLAGS_BOOTSTRAP_HACK
: RTSEMEVENT_FLAGS_NO_LOCK_VAL,
NIL_RTLOCKVALCLASS,
NULL);
if (RT_SUCCESS(rc))
return VINF_SUCCESS;
RTLockValidatorRecExclDestroy(&pCritSect->pValidatorRec);
}
AssertRC(rc);
pCritSect->EventSem = NULL;
pCritSect->u32Magic = (uint32_t)rc;
return rc;
}
RTDECL(int) RTSemEventCreate(PRTSEMEVENT phEventSem)
{
return RTSemEventCreateEx(phEventSem, 0 /*fFlags*/, NIL_RTLOCKVALCLASS, NULL);
}
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;
}
