virtual void run() {
// This is the code that each of the spawned threads runs.
// All threads move together throught the started - middle - done sequence together,
// waiting for all other threads to reach each point before advancing.
umtx_lock(&gTestMutexA);
gThreadsStarted += 1;
umtx_condBroadcast(&gThreadsCountChanged);
while (gThreadsStarted < TESTMUTEX_THREAD_COUNT) {
if (gThreadsInMiddle != 0) {
IntlTest::gTest->errln(
"%s:%d gThreadsInMiddle = %d. Expected 0.", __FILE__, __LINE__, gThreadsInMiddle);
return;
}
umtx_condWait(&gThreadsCountChanged, &gTestMutexA);
}
gThreadsInMiddle += 1;
umtx_condBroadcast(&gThreadsCountChanged);
while (gThreadsInMiddle < TESTMUTEX_THREAD_COUNT) {
if (gThreadsDone != 0) {
IntlTest::gTest->errln(
"%s:%d gThreadsDone = %d. Expected 0.", __FILE__, __LINE__, gThreadsDone);
return;
}
umtx_condWait(&gThreadsCountChanged, &gTestMutexA);
}
gThreadsDone += 1;
umtx_condBroadcast(&gThreadsCountChanged);
while (gThreadsDone < TESTMUTEX_THREAD_COUNT) {
umtx_condWait(&gThreadsCountChanged, &gTestMutexA);
}
umtx_unlock(&gTestMutexA);
}
void UnifiedCache::flush() const {
Mutex lock(&gCacheMutex);
// Use a loop in case cache items that are flushed held hard references to
// other cache items making those additional cache items eligible for
// flushing.
while (_flush(FALSE));
umtx_condBroadcast(&gInProgressValueAddedCond);
}
// Worker thread function.
void CondThread::run() {
umtx_lock(&gCTMutex);
gStartedThreads += gConditionTestOne;
umtx_condBroadcast(&gCTConditionVar);
while (gStartedThreads < NUMTHREADS) {
if (gFinishedThreads != 0) {
IntlTest::gTest->errln("File %s, Line %d: Error, gStartedThreads = %d, gFinishedThreads = %d",
__FILE__, __LINE__, gStartedThreads, gFinishedThreads);
}
umtx_condWait(&gCTConditionVar, &gCTMutex);
}
gFinishedThreads += gConditionTestOne;
fFinished = true;
umtx_condBroadcast(&gCTConditionVar);
while (gFinishedThreads < NUMTHREADS) {
umtx_condWait(&gCTConditionVar, &gCTMutex);
}
umtx_unlock(&gCTMutex);
}
template<> U_EXPORT
const UCTMultiThreadItem *LocaleCacheKey<UCTMultiThreadItem>::createObject(
const void *context, UErrorCode &status) const {
const UnifiedCache *cacheContext = (const UnifiedCache *) context;
if (uprv_strcmp(fLoc.getLanguage(), fLoc.getName()) != 0) {
const UCTMultiThreadItem *result = NULL;
if (cacheContext == NULL) {
UnifiedCache::getByLocale(fLoc.getLanguage(), result, status);
return result;
}
cacheContext->get(LocaleCacheKey<UCTMultiThreadItem>(fLoc.getLanguage()), result, status);
return result;
}
umtx_lock(&gCTMutex);
bool firstObject = (gObjectsCreated == 0);
if (firstObject) {
// Force the first object creation that comes through to wait
// until other have completed. Verifies that cache doesn't
// deadlock when a creation is slow.
// Note that gObjectsCreated needs to be incremeneted from 0 to 1
// early, to keep subsequent threads from entering this path.
gObjectsCreated = 1;
while (gObjectsCreated < 3) {
umtx_condWait(&gCTConditionVar, &gCTMutex);
}
}
umtx_unlock(&gCTMutex);
const UCTMultiThreadItem *result =
new UCTMultiThreadItem(fLoc.getLanguage());
if (result == NULL) {
status = U_MEMORY_ALLOCATION_ERROR;
} else {
result->addRef();
}
// Log that we created an object. The first object was already counted,
// don't do it again.
umtx_lock(&gCTMutex);
if (!firstObject) {
gObjectsCreated += 1;
}
umtx_condBroadcast(&gCTConditionVar);
umtx_unlock(&gCTMutex);
return result;
}
// Store a value and error in given hash entry.
// On entry, gCacheMutex must be held. Hash entry element must be in progress.
// value must be non NULL.
// On Exit, soft reference added to value. value and status stored in hash
// entry. Soft reference removed from previous stored value. Waiting
// threads notified.
void UnifiedCache::_put(
const UHashElement *element,
const SharedObject *value,
const UErrorCode status) {
U_ASSERT(_inProgress(element));
const CacheKeyBase *theKey = (const CacheKeyBase *) element->key.pointer;
const SharedObject *oldValue = (const SharedObject *) element->value.pointer;
theKey->creationStatus = status;
value->addSoftRef();
UHashElement *ptr = const_cast<UHashElement *>(element);
ptr->value.pointer = (void *) value;
oldValue->removeSoftRef();
// Tell waiting threads that we replace in-progress status with
// an error.
umtx_condBroadcast(&gInProgressValueAddedCond);
}
void UnifiedCache::_put(
const UHashElement *element,
const SharedObject *value,
const UErrorCode status) const {
U_ASSERT(_inProgress(element));
const CacheKeyBase *theKey = (const CacheKeyBase *) element->key.pointer;
const SharedObject *oldValue = (const SharedObject *) element->value.pointer;
theKey->fCreationStatus = status;
if (value->softRefCount == 0) {
_registerMaster(theKey, value);
}
value->softRefCount++;
UHashElement *ptr = const_cast<UHashElement *>(element);
ptr->value.pointer = (void *) value;
U_ASSERT(oldValue == fNoValue);
removeSoftRef(oldValue);
// Tell waiting threads that we replace in-progress status with
// an error.
umtx_condBroadcast(gInProgressValueAddedCond());
}
