Bool
MXUser_TryAcquireExclLock(MXUserExclLock *lock) // IN/OUT:
{
Bool success;
ASSERT(lock);
MXUserValidateHeader(&lock->header, MXUSER_TYPE_EXCL);
if (MXUserTryAcquireFail(lock->header.name)) {
return FALSE;
}
success = MXRecLockTryAcquire(&lock->recursiveLock);
if (success) {
MXUserAcquisitionTracking(&lock->header, FALSE);
if (vmx86_debug && (MXRecLockCount(&lock->recursiveLock) > 1)) {
MXUserDumpAndPanic(&lock->header,
"%s: Acquire on an acquired exclusive lock\n",
__FUNCTION__);
}
}
if (vmx86_stats) {
MXUserStats *stats = Atomic_ReadPtr(&lock->statsMem);
if (LIKELY(stats != NULL)) {
MXUserAcquisitionSample(&stats->acquisitionStats, success, !success,
0ULL);
}
}
return success;
}
Bool
MXUser_TryAcquireRecLock(MXUserRecLock *lock) // IN/OUT:
{
Bool success;
ASSERT(lock);
MXUserValidateHeader(&lock->header, MXUSER_TYPE_REC);
ASSERT(Atomic_Read(&lock->refCount) > 0);
if (UNLIKELY(lock->vmmLock != NULL)) {
ASSERT(MXUserMX_TryLockRec);
success = (*MXUserMX_TryLockRec)(lock->vmmLock);
} else {
if (MXUserTryAcquireFail(lock->header.name)) {
success = FALSE;
goto bail;
}
success = MXRecLockTryAcquire(&lock->recursiveLock);
if (success) {
MXUserAcquisitionTracking(&lock->header, FALSE);
}
if (vmx86_stats) {
MXUserAcquireStats *acquireStats;
acquireStats = Atomic_ReadPtr(&lock->acquireStatsMem);
if (LIKELY(acquireStats != NULL)) {
MXUserAcquisitionSample(&acquireStats->data, success, !success,
0ULL);
}
}
}
bail:
return success;
}
