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kernel/svc: Migrate svcCancelSynchronization behavior to a thread function

The actual behavior of this function is slightly more complex than what
we're currently doing within the supervisor call. To avoid dumping most
of this behavior in the supervisor call itself, we can migrate this to
another function.
This commit is contained in:
Lioncash 2019-04-17 07:08:12 -04:00
parent 0cfbd3325b
commit 433b59c112
3 changed files with 17 additions and 7 deletions

View file

@ -518,16 +518,14 @@ static ResultCode CancelSynchronization(Core::System& system, Handle thread_hand
LOG_TRACE(Kernel_SVC, "called thread=0x{:X}", thread_handle);
const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
const SharedPtr<Thread> thread = handle_table.Get<Thread>(thread_handle);
SharedPtr<Thread> thread = handle_table.Get<Thread>(thread_handle);
if (!thread) {
LOG_ERROR(Kernel_SVC, "Thread handle does not exist, thread_handle=0x{:08X}",
thread_handle);
return ERR_INVALID_HANDLE;
}
ASSERT(thread->GetStatus() == ThreadStatus::WaitSynchAny);
thread->SetWaitSynchronizationResult(ERR_SYNCHRONIZATION_CANCELED);
thread->ResumeFromWait();
thread->CancelWait();
return RESULT_SUCCESS;
}

View file

@ -142,6 +142,12 @@ void Thread::ResumeFromWait() {
ChangeScheduler();
}
void Thread::CancelWait() {
ASSERT(GetStatus() == ThreadStatus::WaitSynchAny);
SetWaitSynchronizationResult(ERR_SYNCHRONIZATION_CANCELED);
ResumeFromWait();
}
/**
* Resets a thread context, making it ready to be scheduled and run by the CPU
* @param context Thread context to reset

View file

@ -164,11 +164,17 @@ public:
return tls_memory;
}
/**
* Resumes a thread from waiting
*/
/// Resumes a thread from waiting
void ResumeFromWait();
/// Cancels a waiting operation that this thread may or may not be within.
///
/// When the thread is within a waiting state, this will set the thread's
/// waiting result to signal a canceled wait. The function will then resume
/// this thread.
///
void CancelWait();
/**
* Schedules an event to wake up the specified thread after the specified delay
* @param nanoseconds The time this thread will be allowed to sleep for