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/* -------------------------------------------
Copyright SoftwareLabs
------------------------------------------- */
#include <KernelKit/ProcessScheduler.hxx>
#include <KernelKit/Semaphore.hpp>
#include <KernelKit/Timer.hpp>
namespace NewOS
{
bool Semaphore::Unlock() noexcept
{
if (fLockingProcess)
fLockingProcess = nullptr;
return fLockingProcess == nullptr;
}
bool Semaphore::Lock(ProcessHeader* process)
{
if (!process || fLockingProcess)
return false;
fLockingProcess = process;
return true;
}
bool Semaphore::IsLocked() const
{
return fLockingProcess;
}
bool Semaphore::LockOrWait(ProcessHeader* process, const Int64& seconds)
{
if (process == nullptr)
return false;
HardwareTimer timer(Seconds(seconds));
timer.Wait();
return this->Lock(process);
}
void Semaphore::Sync() noexcept
{
while (fLockingProcess)
{
}
}
} // namespace NewOS
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