RTDECL(int) RTSemEventMultiCreate(PRTSEMEVENTMULTI phEventMultiSem) { return RTSemEventMultiCreateEx(phEventMultiSem, 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; }