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thermopshere: add spinlock try lock

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TuxSH
2020-01-26 01:44:17 +00:00
parent 65205f74da
commit b168b0c2eb
3 changed files with 43 additions and 9 deletions
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20
thermosphere/src/spinlock.c
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@@ -19,7 +19,7 @@
void recursiveSpinlockLock(RecursiveSpinlock *lock)
{
if (lock->tag != currentCoreCtx->coreId + 1) {
if (LIKELY(lock->tag != currentCoreCtx->coreId + 1)) {
spinlockLock(&lock->lock);
lock->tag = currentCoreCtx->coreId + 1;
lock->count = 1;
@@ -28,9 +28,25 @@ void recursiveSpinlockLock(RecursiveSpinlock *lock)
}
}
bool recursiveSpinlockTryLock(RecursiveSpinlock *lock)
{
if (LIKELY(lock->tag != currentCoreCtx->coreId + 1)) {
if (!spinlockTryLock(&lock->lock)) {
return false;
} else {
lock->tag = currentCoreCtx->coreId + 1;
lock->count = 1;
return true;
}
} else {
++lock->count;
return true;
}
}
void recursiveSpinlockUnlock(RecursiveSpinlock *lock)
{
if (--lock->count == 0) {
if (LIKELY(--lock->count == 0)) {
lock->tag = 0;
spinlockUnlock(&lock->lock);
}