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/* -------------------------------------------
Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved.
------------------------------------------- */
#include <KernelKit/BinaryMutex.h>
#include <KernelKit/ProcessScheduler.h>
namespace Kernel {
/***********************************************************************************/
/// @brief Unlocks the binary mutex.
/***********************************************************************************/
Bool BinaryMutex::Unlock() noexcept {
if (fLockingProcess.Status == ProcessStatusKind::kRunning) {
fLockingProcess = USER_PROCESS();
fLockingProcess.Status = ProcessStatusKind::kFrozen;
return Yes;
}
return No;
}
/***********************************************************************************/
/// @brief Locks process in the binary mutex.
/***********************************************************************************/
Bool BinaryMutex::Lock(USER_PROCESS& process) {
if (!process || this->IsLocked()) return No;
this->fLockingProcess = process;
return Yes;
}
/***********************************************************************************/
/// @brief Checks if process is locked.
/***********************************************************************************/
Bool BinaryMutex::IsLocked() const {
return this->fLockingProcess.Status == ProcessStatusKind::kRunning;
}
/***********************************************************************************/
/// @brief Try lock or wait.
/***********************************************************************************/
Bool BinaryMutex::LockOrWait(USER_PROCESS& process, TimerInterface* timer) {
if (timer == nullptr) return No;
this->Lock(process);
timer->Wait();
return this->Lock(process);
}
/***********************************************************************************/
/// @brief Wait for process **sec** until we check if it's free.
/// @param sec seconds.
/***********************************************************************************/
BOOL BinaryMutex::WaitForProcess(const Int16& sec) noexcept {
HardwareTimer hw_timer(rtl_milliseconds(sec));
hw_timer.Wait();
return !this->IsLocked();
}
} // namespace Kernel
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