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Code Issues Releases Activity

Mutex: Correct Result writting to clear exclusivity.

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This commit is contained in:
Fernando Sahmkow 2020-03-04 22:46:22 -04:00
parent e4b175ade2
commit a6bce296ad
1 changed files with 11 additions and 3 deletions
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14
src/core/hle/kernel/mutex.cpp
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@ -9,6 +9,7 @@
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/core.h"
#include "core/arm/exclusive_monitor.h"
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/kernel.h"
@ -133,8 +134,12 @@ std::pair<ResultCode, std::shared_ptr<Thread>> Mutex::Unlock(std::shared_ptr<Thr
}
auto [new_owner, num_waiters] = GetHighestPriorityMutexWaitingThread(owner, address);
auto& monitor = system.Monitor();
const std::size_t current_core = system.CurrentCoreIndex();
if (new_owner == nullptr) {
system.Memory().Write32(address, 0);
do {
monitor.SetExclusive(current_core, address);
} while (!monitor.ExclusiveWrite32(current_core, address, 0));
return {RESULT_SUCCESS, nullptr};
}
// Transfer the ownership of the mutex from the previous owner to the new one.
@ -145,9 +150,12 @@ std::pair<ResultCode, std::shared_ptr<Thread>> Mutex::Unlock(std::shared_ptr<Thr
mutex_value |= Mutex::MutexHasWaitersFlag;
}
new_owner->SetSynchronizationResults(nullptr, RESULT_SUCCESS);
new_owner->ResumeFromWait();
new_owner->SetLockOwner(nullptr);
system.Memory().Write32(address, mutex_value);
new_owner->ResumeFromWait();
do {
monitor.SetExclusive(current_core, address);
} while (!monitor.ExclusiveWrite32(current_core, address, mutex_value));
return {RESULT_SUCCESS, new_owner};
}