TimeZoneGenericNames*
TimeZoneGenericNames::createInstance(const Locale& locale, UErrorCode& status) {
if (U_FAILURE(status)) {
return NULL;
}
TimeZoneGenericNames* instance = new TimeZoneGenericNames();
if (instance == NULL) {
status = U_MEMORY_ALLOCATION_ERROR;
return NULL;
}
TZGNCoreRef *cacheEntry = NULL;
{
Mutex lock(&gTZGNLock);
if (!gTZGNCoreCacheInitialized) {
// Create empty hashtable
gTZGNCoreCache = uhash_open(uhash_hashChars, uhash_compareChars, NULL, &status);
if (U_SUCCESS(status)) {
uhash_setKeyDeleter(gTZGNCoreCache, uprv_free);
uhash_setValueDeleter(gTZGNCoreCache, deleteTZGNCoreRef);
gTZGNCoreCacheInitialized = TRUE;
ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONEGENERICNAMES, tzgnCore_cleanup);
}
}
if (U_FAILURE(status)) {
return NULL;
}
// Check the cache, if not available, create new one and cache
const char *key = locale.getName();
cacheEntry = (TZGNCoreRef *)uhash_get(gTZGNCoreCache, key);
if (cacheEntry == NULL) {
TZGNCore *tzgnCore = NULL;
char *newKey = NULL;
tzgnCore = new TZGNCore(locale, status);
if (tzgnCore == NULL) {
status = U_MEMORY_ALLOCATION_ERROR;
}
if (U_SUCCESS(status)) {
newKey = (char *)uprv_malloc(uprv_strlen(key) + 1);
if (newKey == NULL) {
status = U_MEMORY_ALLOCATION_ERROR;
} else {
uprv_strcpy(newKey, key);
}
}
if (U_SUCCESS(status)) {
cacheEntry = (TZGNCoreRef *)uprv_malloc(sizeof(TZGNCoreRef));
if (cacheEntry == NULL) {
status = U_MEMORY_ALLOCATION_ERROR;
} else {
cacheEntry->obj = tzgnCore;
cacheEntry->refCount = 1;
cacheEntry->lastAccess = (double)uprv_getUTCtime();
uhash_put(gTZGNCoreCache, newKey, cacheEntry, &status);
}
}
if (U_FAILURE(status)) {
if (tzgnCore != NULL) {
delete tzgnCore;
}
if (newKey != NULL) {
uprv_free(newKey);
}
if (cacheEntry != NULL) {
uprv_free(cacheEntry);
}
cacheEntry = NULL;
}
} else {
// Update the reference count
cacheEntry->refCount++;
cacheEntry->lastAccess = (double)uprv_getUTCtime();
}
gAccessCount++;
if (gAccessCount >= SWEEP_INTERVAL) {
// sweep
sweepCache();
gAccessCount = 0;
}
} // End of mutex locked block
if (cacheEntry == NULL) {
delete instance;
return NULL;
}
instance->fRef = cacheEntry;
return instance;
}
TimeZoneNamesDelegate::TimeZoneNamesDelegate(const Locale& locale, UErrorCode& status) {
Mutex lock(&gTimeZoneNamesLock);
if (!gTimeZoneNamesCacheInitialized) {
// Create empty hashtable if it is not already initialized.
gTimeZoneNamesCache = uhash_open(uhash_hashChars, uhash_compareChars, NULL, &status);
if (U_SUCCESS(status)) {
uhash_setKeyDeleter(gTimeZoneNamesCache, uprv_free);
uhash_setValueDeleter(gTimeZoneNamesCache, deleteTimeZoneNamesCacheEntry);
gTimeZoneNamesCacheInitialized = TRUE;
ucln_i18n_registerCleanup(UCLN_I18N_TIMEZONENAMES, timeZoneNames_cleanup);
}
}
if (U_FAILURE(status)) {
return;
}
// Check the cache, if not available, create new one and cache
TimeZoneNamesCacheEntry *cacheEntry = NULL;
const char *key = locale.getName();
cacheEntry = (TimeZoneNamesCacheEntry *)uhash_get(gTimeZoneNamesCache, key);
if (cacheEntry == NULL) {
TimeZoneNames *tznames = NULL;
char *newKey = NULL;
tznames = new TimeZoneNamesImpl(locale, status);
if (tznames == NULL) {
status = U_MEMORY_ALLOCATION_ERROR;
}
if (U_SUCCESS(status)) {
newKey = (char *)uprv_malloc(uprv_strlen(key) + 1);
if (newKey == NULL) {
status = U_MEMORY_ALLOCATION_ERROR;
} else {
uprv_strcpy(newKey, key);
}
}
if (U_SUCCESS(status)) {
cacheEntry = (TimeZoneNamesCacheEntry *)uprv_malloc(sizeof(TimeZoneNamesCacheEntry));
if (cacheEntry == NULL) {
status = U_MEMORY_ALLOCATION_ERROR;
} else {
cacheEntry->names = tznames;
cacheEntry->refCount = 1;
cacheEntry->lastAccess = (double)uprv_getUTCtime();
uhash_put(gTimeZoneNamesCache, newKey, cacheEntry, &status);
}
}
if (U_FAILURE(status)) {
if (tznames != NULL) {
delete tznames;
}
if (newKey != NULL) {
uprv_free(newKey);
}
if (cacheEntry != NULL) {
uprv_free(cacheEntry);
}
cacheEntry = NULL;
}
} else {
// Update the reference count
cacheEntry->refCount++;
cacheEntry->lastAccess = (double)uprv_getUTCtime();
}
gAccessCount++;
if (gAccessCount >= SWEEP_INTERVAL) {
// sweep
sweepCache();
gAccessCount = 0;
}
fTZnamesCacheEntry = cacheEntry;
}