void
CVMmemEnableWriteNotify(CVMMemHandle *h, CVMUint32* start, CVMUint32* end)
{
CVMMemPrivateData *r = h2d(h);
CVMAddr alignedStart = ALIGNED(start);
CVMAddr alignedEnd = ALIGNEDNEXT(end);
if (wnlLock == NULL) {
wnlLock = malloc(sizeof(CVMMutex));
CVMmutexInit(wnlLock);
}
CVMmutexLock(wnlLock);
/* Add to the write notify list. */
if (writeNotifyList == NULL) {
r->nextWriteNotify = NULL;
} else {
r->nextWriteNotify = writeNotifyList;
}
writeNotifyList = r;
CVMmutexUnlock(wnlLock);
/* Protect the aligned region that contains the start and end to
* enable write notify.
*/
CVMmprotect((void*)alignedStart, (void*)alignedEnd, CVM_TRUE);
}
void jsr120_sms_pool_init() {
/**
* Impl note.
* Theoretically, mutex could be created twice.
* But it is not a big problem if one mutex will be lost.
*/
if (!is_mutex_inited) {
is_mutex_inited = 1;
CVMmutexInit(&_mutex);
}
}
CVMBool
CVMreentrantMutexInit(CVMReentrantMutex * rm, CVMExecEnv *owner,
CVMUint32 count)
{
rm->count = count;
rm->owner = owner;
if (CVMmutexInit(&rm->mutex)) {
if (count > 0) {
CVMBool success = CVMmutexTryLock(&rm->mutex);
CVMassert(success); (void) success;
}
return CVM_TRUE;
}
return CVM_FALSE;
}