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));
struct RTSEMEVENTINTERNAL *pThis;
if (!(fFlags & RTSEMEVENT_FLAGS_BOOTSTRAP_HACK))
pThis = (struct RTSEMEVENTINTERNAL *)RTMemAlloc(sizeof(*pThis));
else
pThis = (struct RTSEMEVENTINTERNAL *)rtMemBaseAlloc(sizeof(*pThis));
if (!pThis)
return VERR_NO_MEMORY;
/*
* Create the semaphore.
* (Auto reset, not signaled, private event object.)
*/
pThis->hev = CreateEvent(NULL, FALSE, FALSE, NULL);
if (pThis->hev != NULL) /* not INVALID_HANDLE_VALUE */
{
pThis->u32Magic = RTSEMEVENT_MAGIC;
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;
}
DWORD dwErr = GetLastError();
if (!(fFlags & RTSEMEVENT_FLAGS_BOOTSTRAP_HACK))
RTMemFree(pThis);
else
rtMemBaseFree(pThis);
return RTErrConvertFromWin32(dwErr);
}
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.
*/
struct RTSEMEVENTINTERNAL *pThis;
if (!(fFlags & RTSEMEVENT_FLAGS_BOOTSTRAP_HACK))
pThis = (struct RTSEMEVENTINTERNAL *)RTMemAlloc(sizeof(struct RTSEMEVENTINTERNAL));
else
pThis = (struct RTSEMEVENTINTERNAL *)rtMemBaseAlloc(sizeof(struct RTSEMEVENTINTERNAL));
if (pThis)
{
pThis->iMagic = RTSEMEVENT_MAGIC;
pThis->cWaiters = 0;
pThis->fSignalled = 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;
#endif
*phEventSem = pThis;
return VINF_SUCCESS;
}
return VERR_NO_MEMORY;
}
/**
* Worker for RTHeapPageAlloc.
*
* @returns IPRT status code
* @param pHeap The heap - locked.
* @param cPages The page count.
* @param pszTag The tag.
* @param fZero Whether to zero the memory.
* @param ppv Where to return the address of the allocation
* on success.
*/
static int rtHeapPageAllocLocked(PRTHEAPPAGE pHeap, size_t cPages, const char *pszTag, bool fZero, void **ppv)
{
int rc;
/*
* Use the hints first.
*/
if (pHeap->pHint1)
{
rc = rtHeapPageAllocFromBlock(pHeap->pHint1, cPages, fZero, ppv);
if (rc != VERR_NO_MEMORY)
return rc;
}
if (pHeap->pHint2)
{
rc = rtHeapPageAllocFromBlock(pHeap->pHint2, cPages, fZero, ppv);
if (rc != VERR_NO_MEMORY)
return rc;
}
/*
* Search the heap for a block with enough free space.
*
* N.B. This search algorithm is not optimal at all. What (hopefully) saves
* it are the two hints above.
*/
if (pHeap->cFreePages >= cPages)
{
RTHEAPPAGEALLOCARGS Args;
Args.cPages = cPages;
Args.pvAlloc = NULL;
Args.fZero = fZero;
RTAvlrPVDoWithAll(&pHeap->BlockTree, true /*fFromLeft*/, rtHeapPageAllocCallback, &Args);
if (Args.pvAlloc)
{
*ppv = Args.pvAlloc;
return VINF_SUCCESS;
}
}
/*
* Didn't find anytyhing, so expand the heap with a new block.
*/
RTCritSectLeave(&pHeap->CritSect);
void *pvPages;
pvPages = mmap(NULL, RTMEMPAGEPOSIX_BLOCK_SIZE,
PROT_READ | PROT_WRITE | (pHeap->fExec ? PROT_EXEC : 0),
MAP_PRIVATE | MAP_ANONYMOUS,
-1, 0);
if (pvPages == MAP_FAILED)
{
RTCritSectEnter(&pHeap->CritSect);
return RTErrConvertFromErrno(errno);
}
/** @todo Eliminate this rtMemBaseAlloc dependency! */
PRTHEAPPAGEBLOCK pBlock = (PRTHEAPPAGEBLOCK)rtMemBaseAlloc(sizeof(*pBlock));
if (!pBlock)
{
munmap(pvPages, RTMEMPAGEPOSIX_BLOCK_SIZE);
RTCritSectEnter(&pHeap->CritSect);
return VERR_NO_MEMORY;
}
RT_ZERO(*pBlock);
pBlock->Core.Key = pvPages;
pBlock->Core.KeyLast = (uint8_t *)pvPages + RTMEMPAGEPOSIX_BLOCK_SIZE - 1;
pBlock->cFreePages = RTMEMPAGEPOSIX_BLOCK_PAGE_COUNT;
pBlock->pHeap = pHeap;
RTCritSectEnter(&pHeap->CritSect);
bool fRc = RTAvlrPVInsert(&pHeap->BlockTree, &pBlock->Core);
Assert(fRc);
NOREF(fRc);
pHeap->cFreePages += RTMEMPAGEPOSIX_BLOCK_PAGE_COUNT;
pHeap->cHeapPages += RTMEMPAGEPOSIX_BLOCK_PAGE_COUNT;
/*
* Grab memory from the new block (cannot fail).
*/
rc = rtHeapPageAllocFromBlock(pBlock, cPages, fZero, ppv);
Assert(rc == VINF_SUCCESS);
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;
}
