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[xboxkrnl] Implement ExTryToAcquireRWLExclusive. 

[xboxkrnl] Implement ExTryToAcquireReadWriteLockExclusive.
This commit is contained in:
gibbed 2022-01-07 09:19:15 -06:00 committed by Rick Gibbed
parent e795337071
commit 3162a6435c
1 changed files with 18 additions and 0 deletions
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18
src/xenia/kernel/xboxkrnl/xboxkrnl_threading.cc
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@ -1199,6 +1199,24 @@ void ExAcquireReadWriteLockExclusive(pointer_t<X_ERWLOCK> lock_ptr) {
DECLARE_XBOXKRNL_EXPORT2(ExAcquireReadWriteLockExclusive, kThreading,
kImplemented, kBlocking);
dword_result_t ExTryToAcquireReadWriteLockExclusive(
pointer_t<X_ERWLOCK> lock_ptr) {
auto old_irql = xeKeKfAcquireSpinLock(&lock_ptr->spin_lock);
uint32_t result;
if (lock_ptr->lock_count < 0) {
lock_ptr->lock_count = 0;
result = 1;
} else {
result = 0;
}
xeKeKfReleaseSpinLock(&lock_ptr->spin_lock, old_irql);
return result;
}
DECLARE_XBOXKRNL_EXPORT1(ExTryToAcquireReadWriteLockExclusive, kThreading,
kImplemented);
void ExReleaseReadWriteLock(pointer_t<X_ERWLOCK> lock_ptr) {
auto old_irql = xeKeKfAcquireSpinLock(&lock_ptr->spin_lock);