mirror of
https://github.com/libretro/pcsx2.git
synced 2024-12-21 01:08:14 +00:00
Yet more thread sync fixes, mostly to do with rapid reset/resume/suspend/exit actions.
git-svn-id: http://pcsx2.googlecode.com/svn/trunk@2030 96395faa-99c1-11dd-bbfe-3dabce05a288
This commit is contained in:
Jake.Stine
parent
877f59a255
commit
6c631e009d
@ -268,6 +268,9 @@ namespace Threading
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virtual void Block();
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virtual void RethrowException() const;
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void WaitOnSelf( Semaphore& mutex );
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void WaitOnSelf( MutexLock& mutex );
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bool IsRunning() const;
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bool IsSelf() const;
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wxString GetName() const;
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@ -276,10 +279,15 @@ namespace Threading
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// Extending classes should always implement your own OnStart(), which is called by
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// Start() once necessary locks have been obtained. Do not override Start() directly
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// unless you're really sure that's what you need to do. ;)
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virtual void OnStart()=0;
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virtual void OnCleanupInThread()=0;
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virtual void OnStart();
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virtual void OnStartInThread();
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// Implemented by derived class to handle threading actions!
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// This is called when the thread has been canceled or exits normally. The PersistentThread
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// automatically binds it to the pthread cleanup routines as soon as the thread starts.
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virtual void OnCleanupInThread();
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// Implemented by derived class to perform actual threaded task!
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virtual void ExecuteTaskInThread()=0;
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void TestCancel();
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@ -444,23 +452,23 @@ namespace Threading
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// Our fundamental interlocking functions. All other useful interlocks can be derived
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// from these little beasties!
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extern void AtomicExchange( volatile u32& Target, u32 value );
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extern void AtomicExchangeAdd( volatile u32& Target, u32 value );
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extern void AtomicIncrement( volatile u32& Target );
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extern void AtomicDecrement( volatile u32& Target );
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extern void AtomicExchange( volatile s32& Target, s32 value );
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extern void AtomicExchangeAdd( volatile s32& Target, u32 value );
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extern void AtomicIncrement( volatile s32& Target );
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extern void AtomicDecrement( volatile s32& Target );
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extern u32 AtomicExchange( volatile u32& Target, u32 value );
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extern u32 AtomicExchangeAdd( volatile u32& Target, u32 value );
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extern u32 AtomicIncrement( volatile u32& Target );
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extern u32 AtomicDecrement( volatile u32& Target );
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extern s32 AtomicExchange( volatile s32& Target, s32 value );
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extern s32 AtomicExchangeAdd( volatile s32& Target, u32 value );
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extern s32 AtomicIncrement( volatile s32& Target );
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extern s32 AtomicDecrement( volatile s32& Target );
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extern void _AtomicExchangePointer( const void ** target, const void* value );
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extern void _AtomicCompareExchangePointer( const void ** target, const void* value, const void* comparand );
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extern void* _AtomicExchangePointer( void * volatile * const target, void* const value );
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extern void* _AtomicCompareExchangePointer( void * volatile * const target, void* const value, void* const comparand );
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#define AtomicExchangePointer( target, value ) \
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_AtomicExchangePointer( (const void**)(&target), (const void*)(value) )
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_InterlockedExchangePointer( &target, value )
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#define AtomicCompareExchangePointer( target, value, comparand ) \
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_AtomicCompareExchangePointer( (const void**)(&target), (const void*)(value), (const void*)(comparand) )
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_InterlockedCompareExchangePointer( &target, value, comparand )
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}
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@ -85,7 +85,7 @@ Exception::BaseException::~BaseException() throw() {}
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void Exception::BaseException::InitBaseEx( const wxString& msg_eng, const wxString& msg_xlt )
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{
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m_message_diag = msg_eng;
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m_message_user = msg_xlt;
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m_message_user = msg_xlt.IsEmpty() ? msg_eng : msg_xlt;
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// Linux/GCC exception handling is still suspect (this is likely to do with GCC more
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// than linux), and fails to propagate exceptions up the stack from EErec code. This
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@ -150,9 +150,8 @@ void Threading::MutexLock::Lock()
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}
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else
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{
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do {
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while( !LockRaw(def_yieldgui_interval) )
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wxTheApp->Yield( true );
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} while( !LockRaw(def_yieldgui_interval) );
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}
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#else
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LockRaw();
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@ -183,8 +182,8 @@ bool Threading::MutexLock::Lock( const wxTimeSpan& timeout )
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wxTimeSpan countdown( (timeout) );
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do {
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wxTheApp->Yield(true);
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if( LockRaw( def_yieldgui_interval ) ) break;
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wxTheApp->Yield(true);
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countdown -= def_yieldgui_interval;
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} while( countdown.GetMilliseconds() > 0 );
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@ -68,7 +68,7 @@ bool Threading::Semaphore::WaitRaw( const wxTimeSpan& timeout )
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{
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wxDateTime megafail( wxDateTime::UNow() + timeout );
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const timespec fail = { megafail.GetTicks(), megafail.GetMillisecond() * 1000000 };
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return sem_timedwait( &m_sema, &fail ) != -1;
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return sem_timedwait( &m_sema, &fail ) == 0;
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}
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@ -94,9 +94,8 @@ void Threading::Semaphore::Wait()
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}
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else
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{
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do {
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while( !WaitRaw( def_yieldgui_interval ) )
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wxTheApp->Yield( true );
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} while( !WaitRaw( def_yieldgui_interval ) );
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}
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#else
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WaitRaw();
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@ -136,8 +135,8 @@ bool Threading::Semaphore::Wait( const wxTimeSpan& timeout )
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wxTimeSpan countdown( (timeout) );
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do {
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wxTheApp->Yield(true);
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if( WaitRaw( def_yieldgui_interval ) ) break;
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wxTheApp->Yield(true);
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countdown -= def_yieldgui_interval;
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} while( countdown.GetMilliseconds() > 0 );
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@ -43,13 +43,11 @@ bool Threading::_WaitGui_RecursionGuard( const char* guardname )
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// In order to avoid deadlock we need to make sure we cut some time to handle messages.
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// But this can result in recursive yield calls, which would crash the app. Protect
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// against them here and, if recursion is detected, perform a standard blocking wait.
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// (also, wx ignores message pumping on recursive Yields, so no point in allowing
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// more then one recursion)
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static int __Guard = 0;
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RecursionGuard guard( __Guard );
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if( guard.Counter >= 2 )
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if( guard.IsReentrant() )
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{
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Console.WriteLn( "(Thread Log) Possible yield recursion detected in %s; performing blocking wait.", guardname );
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return true;
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@ -130,7 +128,7 @@ void Threading::PersistentThread::FrankenMutex( MutexLock& mutex )
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}
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// Main entry point for starting or e-starting a persistent thread. This function performs necessary
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// locks and checks for avoiding race conditions, and then calls OnStart() immeediately before
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// locks and checks for avoiding race conditions, and then calls OnStart() immediately before
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// the actual thread creation. Extending classes should generally not override Start(), and should
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// instead override DoPrepStart instead.
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//
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@ -142,10 +140,6 @@ void Threading::PersistentThread::Start()
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if( m_running ) return;
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Detach(); // clean up previous thread handle, if one exists.
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FrankenMutex( m_lock_InThread );
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m_sem_event.Reset();
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OnStart();
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if( pthread_create( &m_thread, NULL, _internal_callback, this ) != 0 )
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@ -237,6 +231,57 @@ void Threading::PersistentThread::RethrowException() const
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m_except->Rethrow();
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}
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// This helper function is a deadlock-safe method of waiting on a semaphore in a PersistentThread. If the
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// thread is terminated or canceled by another thread or a nested action prior to the semaphore being
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// posted, this function will detect that and throw a ThreadTimedOut exception.
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//
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// Note: Use of this function only applies to semaphores which are posted by the worker thread. Calling
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// this function from the context of the thread itself is an error, and a dev assertion will be generated.
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//
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// Exceptions:
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// ThreadTimedOut
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//
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void Threading::PersistentThread::WaitOnSelf( Semaphore& sem )
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{
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if( !pxAssertDev( !IsSelf(), "WaitOnSelf called from inside the thread (invalid operation!)" ) ) return;
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while( true )
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{
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if( sem.Wait( wxTimeSpan(0, 0, 0, 250) ) ) return;
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if( !m_running )
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{
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wxString msg( m_name + L": thread was terminated while another thread was waiting on a semaphore." );
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throw Exception::ThreadTimedOut( msg, msg );
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}
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}
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}
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// This helper function is a deadlock-safe method of waiting on a mutex in a PersistentThread. If the
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// thread is terminated or canceled by another thread or a nested action prior to the mutex being
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// unlocked, this function will detect that and throw a ThreadTimedOut exception.
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//
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// Note: Use of this function only applies to semaphores which are posted by the worker thread. Calling
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// this function from the context of the thread itself is an error, and a dev assertion will be generated.
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//
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// Exceptions:
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// ThreadTimedOut
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//
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void Threading::PersistentThread::WaitOnSelf( MutexLock& mutex )
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{
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if( !pxAssertDev( !IsSelf(), "WaitOnSelf called from inside the thread (invalid operation!)" ) ) return;
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while( true )
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{
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if( mutex.Wait( wxTimeSpan(0, 0, 0, 250) ) ) return;
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if( !m_running )
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{
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wxString msg( m_name + L": thread was terminated while another thread was waiting on a mutex." );
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throw Exception::ThreadTimedOut( msg, msg );
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}
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}
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}
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// Inserts a thread cancellation point. If the thread has received a cancel request, this
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// function will throw an SEH exception designed to exit the thread (so make sure to use C++
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// object encapsulation for anything that could leak resources, to ensure object unwinding
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@ -322,7 +367,6 @@ void Threading::PersistentThread::_ThreadCleanup()
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_try_virtual_invoke( &PersistentThread::OnCleanupInThread );
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m_running = false;
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m_lock_InThread.Unlock();
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}
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@ -331,16 +375,36 @@ wxString Threading::PersistentThread::GetName() const
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return m_name;
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}
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// This override is called by PeristentThread when the thread is first created, prior to
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// calling ExecuteTaskInThread. This is useful primarily for "base" classes that extend
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// from PersistentThread, giving them the ability to bind startup code to all threads that
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// derive from them. (the alternative would have been to make ExecuteTaskInThread a
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// private member, and provide a new Task executor by a different name).
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void Threading::PersistentThread::OnStartInThread()
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{
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m_running = true;
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}
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void Threading::PersistentThread::_internal_execute()
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{
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m_lock_InThread.Lock();
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m_running = true;
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_DoSetThreadName( m_name );
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OnStartInThread();
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_try_virtual_invoke( &PersistentThread::ExecuteTaskInThread );
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}
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void Threading::PersistentThread::OnStart() {}
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void Threading::PersistentThread::OnCleanupInThread() {}
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void Threading::PersistentThread::OnStart()
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{
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FrankenMutex( m_lock_InThread );
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m_sem_event.Reset();
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}
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void Threading::PersistentThread::OnCleanupInThread()
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{
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m_running = false;
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}
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// passed into pthread_create, and is used to dispatch the thread's object oriented
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// callback function
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@ -497,52 +561,42 @@ void Threading::WaitEvent::Wait()
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// --------------------------------------------------------------------------------------
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// define some overloads for InterlockedExchanges for commonly used types, like u32 and s32.
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__forceinline void Threading::AtomicExchange( volatile u32& Target, u32 value )
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__forceinline u32 Threading::AtomicExchange( volatile u32& Target, u32 value )
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{
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_InterlockedExchange( (volatile long*)&Target, value );
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return _InterlockedExchange( (volatile long*)&Target, value );
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}
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__forceinline void Threading::AtomicExchangeAdd( volatile u32& Target, u32 value )
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__forceinline u32 Threading::AtomicExchangeAdd( volatile u32& Target, u32 value )
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{
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_InterlockedExchangeAdd( (volatile long*)&Target, value );
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return _InterlockedExchangeAdd( (volatile long*)&Target, value );
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}
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__forceinline void Threading::AtomicIncrement( volatile u32& Target )
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__forceinline u32 Threading::AtomicIncrement( volatile u32& Target )
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{
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_InterlockedExchangeAdd( (volatile long*)&Target, 1 );
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return _InterlockedExchangeAdd( (volatile long*)&Target, 1 );
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}
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__forceinline void Threading::AtomicDecrement( volatile u32& Target )
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__forceinline u32 Threading::AtomicDecrement( volatile u32& Target )
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{
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_InterlockedExchangeAdd( (volatile long*)&Target, -1 );
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return _InterlockedExchangeAdd( (volatile long*)&Target, -1 );
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}
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__forceinline void Threading::AtomicExchange( volatile s32& Target, s32 value )
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__forceinline s32 Threading::AtomicExchange( volatile s32& Target, s32 value )
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{
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_InterlockedExchange( (volatile long*)&Target, value );
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return _InterlockedExchange( (volatile long*)&Target, value );
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}
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__forceinline void Threading::AtomicExchangeAdd( volatile s32& Target, u32 value )
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__forceinline s32 Threading::AtomicExchangeAdd( volatile s32& Target, u32 value )
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{
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_InterlockedExchangeAdd( (volatile long*)&Target, value );
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return _InterlockedExchangeAdd( (volatile long*)&Target, value );
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}
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__forceinline void Threading::AtomicIncrement( volatile s32& Target )
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__forceinline s32 Threading::AtomicIncrement( volatile s32& Target )
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{
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_InterlockedExchangeAdd( (volatile long*)&Target, 1 );
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return _InterlockedExchangeAdd( (volatile long*)&Target, 1 );
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}
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__forceinline void Threading::AtomicDecrement( volatile s32& Target )
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__forceinline s32 Threading::AtomicDecrement( volatile s32& Target )
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{
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_InterlockedExchangeAdd( (volatile long*)&Target, -1 );
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}
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__forceinline void Threading::_AtomicExchangePointer( const void ** target, const void* value )
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{
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_InterlockedExchange( (volatile long*)target, (long)value );
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}
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__forceinline void Threading::_AtomicCompareExchangePointer( const void ** target, const void* value, const void* comparand )
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{
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_InterlockedCompareExchange( (volatile long*)target, (long)value, (long)comparand );
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return _InterlockedExchangeAdd( (volatile long*)&Target, -1 );
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}
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@ -108,10 +108,6 @@ protected:
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// run very fast and have little or no ringbuffer overhead (typically opening menus)
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volatile s32 m_QueuedFrames;
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// Protection lock for the frame queue counter -- needed because we can't safely
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// AtomicExchange from two threads.
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MutexLock m_lock_FrameQueueCounter;
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// These vars maintain instance data for sending Data Packets.
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// Only one data packet can be constructed and uploaded at a time.
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@ -72,7 +72,7 @@ struct MTGS_BufferedData
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u128& operator[]( uint idx )
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{
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jASSUME( idx < RingBufferSize );
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pxAssert( idx < RingBufferSize );
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return m_Ring[idx];
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}
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};
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@ -99,7 +99,6 @@ mtgsThreadObject::mtgsThreadObject() :
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, m_CopyDataTally( 0 )
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, m_RingBufferIsBusy( false )
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, m_QueuedFrames( 0 )
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, m_lock_FrameQueueCounter()
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, m_packet_size( 0 )
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, m_packet_ringpos( 0 )
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@ -146,7 +145,7 @@ void mtgsThreadObject::ResetGS()
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// * Signal a reset.
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// * clear the path and byRegs structs (used by GIFtagDummy)
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AtomicExchange( m_RingPos, m_WritePos );
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m_RingPos = m_WritePos;
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MTGS_LOG( "MTGS: Sending Reset..." );
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SendSimplePacket( GS_RINGTYPE_RESET, 0, 0, 0 );
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@ -171,10 +170,8 @@ void mtgsThreadObject::PostVsyncEnd( bool updategs )
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SpinWait();
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}
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m_lock_FrameQueueCounter.Lock();
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m_QueuedFrames++;
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AtomicIncrement( m_QueuedFrames );
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//Console.Status( " >> Frame Added!" );
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m_lock_FrameQueueCounter.Unlock();
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SendSimplePacket( GS_RINGTYPE_VSYNC,
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(*(u32*)(PS2MEM_GS+0x1000)&0x2000), updategs, 0);
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@ -237,9 +234,6 @@ void mtgsThreadObject::OpenPlugin()
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void mtgsThreadObject::ExecuteTaskInThread()
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{
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m_RunningLock.Lock();
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m_StartupEvent.Post();
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#ifdef RINGBUF_DEBUG_STACK
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PacketTagType prevCmd;
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#endif
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@ -279,7 +273,7 @@ void mtgsThreadObject::ExecuteTaskInThread()
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switch( tag.command )
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{
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case GS_RINGTYPE_RESTART:
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AtomicExchange(m_RingPos, 0);
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m_RingPos = 0;
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// stall for a bit to let the MainThread have time to update the g_pGSWritePos.
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m_lock_RingRestart.Wait();
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@ -322,11 +316,9 @@ void mtgsThreadObject::ExecuteTaskInThread()
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GSvsync(tag.data[0]);
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gsFrameSkip( !tag.data[1] );
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m_lock_FrameQueueCounter.Lock();
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AtomicDecrement( m_QueuedFrames );
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jASSUME( m_QueuedFrames >= 0 );
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int framecnt = AtomicDecrement( m_QueuedFrames );
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pxAssertDev( framecnt >= 0, "Frame queue sync count failure." );
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//Console.Status( " << Frame Removed!" );
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m_lock_FrameQueueCounter.Unlock();
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if( PADupdate != NULL )
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{
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@ -413,7 +405,7 @@ void mtgsThreadObject::ExecuteTaskInThread()
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uint newringpos = m_RingPos + ringposinc;
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pxAssert( newringpos <= RingBufferSize );
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newringpos &= RingBufferMask;
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AtomicExchange( m_RingPos, newringpos );
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m_RingPos = newringpos;
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}
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m_RingBufferIsBusy = false;
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}
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@ -474,10 +466,10 @@ u8* mtgsThreadObject::GetDataPacketPtr() const
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void mtgsThreadObject::SendDataPacket()
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{
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// make sure a previous copy block has been started somewhere.
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jASSUME( m_packet_size != 0 );
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pxAssert( m_packet_size != 0 );
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|
||||
uint temp = m_packet_ringpos + m_packet_size;
|
||||
jASSUME( temp <= RingBufferSize );
|
||||
pxAssert( temp <= RingBufferSize );
|
||||
temp &= RingBufferMask;
|
||||
|
||||
if( IsDebugBuild )
|
||||
@ -490,17 +482,17 @@ void mtgsThreadObject::SendDataPacket()
|
||||
// The writepos should never leapfrog the readpos
|
||||
// since that indicates a bad write.
|
||||
if( m_packet_ringpos < readpos )
|
||||
assert( temp < readpos );
|
||||
pxAssert( temp < readpos );
|
||||
}
|
||||
|
||||
// Updating the writepos should never make it equal the readpos, since
|
||||
// that would stop the buffer prematurely (and indicates bad code in the
|
||||
// ringbuffer manager)
|
||||
assert( readpos != temp );
|
||||
pxAssert( readpos != temp );
|
||||
}
|
||||
}
|
||||
|
||||
AtomicExchange( m_WritePos, temp );
|
||||
m_WritePos = temp;
|
||||
|
||||
m_packet_size = 0;
|
||||
|
||||
@ -605,11 +597,11 @@ int mtgsThreadObject::PrepDataPacket( GIF_PATH pathidx, const u8* srcdata, u32 s
|
||||
uint writepos = m_WritePos;
|
||||
|
||||
// Checks if a previous copy was started without an accompanying call to GSRINGBUF_DONECOPY
|
||||
jASSUME( m_packet_size == 0 );
|
||||
pxAssert( m_packet_size == 0 );
|
||||
|
||||
// Sanity checks! (within the confines of our ringbuffer please!)
|
||||
jASSUME( size < RingBufferSize );
|
||||
jASSUME( writepos < RingBufferSize );
|
||||
pxAssert( size < RingBufferSize );
|
||||
pxAssert( writepos < RingBufferSize );
|
||||
|
||||
m_packet_size = GIFPath_ParseTag(pathidx, srcdata, size);
|
||||
size = m_packet_size + 1; // takes into account our command qword.
|
||||
@ -666,8 +658,7 @@ int mtgsThreadObject::PrepDataPacket( GIF_PATH pathidx, const u8* srcdata, u32 s
|
||||
|
||||
m_lock_RingRestart.Lock();
|
||||
SendSimplePacket( GS_RINGTYPE_RESTART, 0, 0, 0 );
|
||||
writepos = 0;
|
||||
AtomicExchange( m_WritePos, writepos );
|
||||
m_WritePos = writepos = 0;
|
||||
m_lock_RingRestart.Unlock();
|
||||
SetEvent();
|
||||
|
||||
@ -733,7 +724,7 @@ __forceinline uint mtgsThreadObject::_PrepForSimplePacket()
|
||||
#endif
|
||||
|
||||
uint future_writepos = m_WritePos+1;
|
||||
jASSUME( future_writepos <= RingBufferSize );
|
||||
pxAssert( future_writepos <= RingBufferSize );
|
||||
|
||||
future_writepos &= RingBufferMask;
|
||||
|
||||
@ -752,8 +743,8 @@ __forceinline uint mtgsThreadObject::_PrepForSimplePacket()
|
||||
|
||||
__forceinline void mtgsThreadObject::_FinishSimplePacket( uint future_writepos )
|
||||
{
|
||||
assert( future_writepos != volatize(m_RingPos) );
|
||||
AtomicExchange( m_WritePos, future_writepos );
|
||||
pxAssert( future_writepos != volatize(m_RingPos) );
|
||||
m_WritePos = future_writepos;
|
||||
}
|
||||
|
||||
void mtgsThreadObject::SendSimplePacket( GS_RINGTYPE type, int data0, int data1, int data2 )
|
||||
@ -794,7 +785,28 @@ void mtgsThreadObject::WaitForOpen()
|
||||
{
|
||||
if( gsIsOpened ) return;
|
||||
Resume();
|
||||
m_sem_OpenDone.Wait();
|
||||
|
||||
// Two-phase timeout on MTGS opening, so that possible errors are handled
|
||||
// in a timely fashion. We check for errors after 2 seconds, and then give it
|
||||
// another 4 seconds if no errors occurred (this might seem long, but sometimes a
|
||||
// GS plugin can be very stubborned, especially in debug mode builds).
|
||||
|
||||
if( !m_sem_OpenDone.Wait( wxTimeSpan(0, 0, 2, 0) ) )
|
||||
{
|
||||
RethrowException();
|
||||
|
||||
if( !m_sem_OpenDone.Wait( wxTimeSpan(0, 0, 4, 0) ) )
|
||||
{
|
||||
RethrowException();
|
||||
|
||||
// Not opened yet, and no exceptions. Weird? You decide!
|
||||
// TODO : implement a user confirmation to cancel the action and exit the
|
||||
// emulator forcefully, or to continue waiting on the GS.
|
||||
|
||||
throw Exception::PluginOpenError( PluginId_GS, "The MTGS thread has become unresponsive while waiting for the GS plugin to open." );
|
||||
}
|
||||
}
|
||||
|
||||
mtgsThread.RethrowException();
|
||||
}
|
||||
|
||||
@ -802,7 +814,7 @@ void mtgsThreadObject::Freeze( int mode, MTGS_FreezeData& data )
|
||||
{
|
||||
if( mode == FREEZE_LOAD )
|
||||
{
|
||||
AtomicExchange( m_RingPos, m_WritePos );
|
||||
WaitGS();
|
||||
SendPointerPacket( GS_RINGTYPE_FREEZE, mode, &data );
|
||||
SetEvent();
|
||||
Resume();
|
||||
|
||||
@ -74,6 +74,8 @@ protected:
|
||||
{
|
||||
if( !state_buffer_lock.TryLock() )
|
||||
throw Exception::CancelEvent( m_name + L"request ignored: state copy buffer is already locked!" );
|
||||
|
||||
_parent::OnStart();
|
||||
}
|
||||
|
||||
void SendFinishEvent( int type )
|
||||
@ -104,7 +106,6 @@ protected:
|
||||
void OnStart()
|
||||
{
|
||||
_parent::OnStart();
|
||||
|
||||
++sys_resume_lock;
|
||||
CoreThread.Pause();
|
||||
}
|
||||
|
||||
@ -46,8 +46,26 @@ void SysThreadBase::Start()
|
||||
{
|
||||
_parent::Start();
|
||||
m_ExecMode = ExecMode_Closing;
|
||||
|
||||
Sleep( 1 );
|
||||
|
||||
if( !m_ResumeEvent.WaitRaw( wxTimeSpan(0, 0, 1, 500) ) )
|
||||
{
|
||||
RethrowException();
|
||||
if( pxAssertDev( m_ExecMode == ExecMode_Closing, "Unexpected thread status during SysThread startup." ) )
|
||||
{
|
||||
throw Exception::ThreadCreationError(
|
||||
wxsFormat( L"Timeout occurred while attempting to start the %s thread.", m_name.c_str() ),
|
||||
wxEmptyString
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
pxAssertDev( (m_ExecMode == ExecMode_Closing) || (m_ExecMode == ExecMode_Closed),
|
||||
"Unexpected thread status during SysThread startup."
|
||||
);
|
||||
|
||||
m_sem_event.Post();
|
||||
m_StartupEvent.Wait();
|
||||
}
|
||||
|
||||
|
||||
@ -56,7 +74,6 @@ void SysThreadBase::OnStart()
|
||||
if( !pxAssertDev( m_ExecMode == ExecMode_NoThreadYet, "SysSustainableThread:Start(): Invalid execution mode" ) ) return;
|
||||
|
||||
m_ResumeEvent.Reset();
|
||||
m_StartupEvent.Reset();
|
||||
FrankenMutex( m_ExecModeMutex );
|
||||
FrankenMutex( m_RunningLock );
|
||||
|
||||
@ -173,13 +190,27 @@ void SysThreadBase::Resume()
|
||||
|
||||
ScopedLock locker( m_ExecModeMutex );
|
||||
|
||||
// Implementation Note:
|
||||
// The entire state coming out of a Wait is indeterminate because of user input
|
||||
// and pending messages being handled. So after each call we do some seemingly redundant
|
||||
// sanity checks against m_ExecMode/m_Running status, and if something doesn't feel
|
||||
// right, we should abort.
|
||||
|
||||
switch( m_ExecMode )
|
||||
{
|
||||
case ExecMode_Opened: return;
|
||||
|
||||
case ExecMode_NoThreadYet:
|
||||
Start();
|
||||
{
|
||||
static int __Guard = 0;
|
||||
RecursionGuard guard( __Guard );
|
||||
if( guard.IsReentrant() ) return;
|
||||
|
||||
Start();
|
||||
if( !m_running || (m_ExecMode == ExecMode_NoThreadYet) )
|
||||
throw Exception::ThreadCreationError();
|
||||
if( m_ExecMode == ExecMode_Opened ) return;
|
||||
}
|
||||
// fall through...
|
||||
|
||||
case ExecMode_Closing:
|
||||
@ -188,11 +219,7 @@ void SysThreadBase::Resume()
|
||||
// state before continuing...
|
||||
|
||||
m_RunningLock.Wait();
|
||||
|
||||
// The entire state coming out of a Wait is indeterminate because of user input
|
||||
// and pending messages being handled. If something doesn't feel right, we should
|
||||
// abort.
|
||||
|
||||
if( !m_running ) return;
|
||||
if( (m_ExecMode != ExecMode_Closed) && (m_ExecMode != ExecMode_Paused) ) return;
|
||||
if( g_plugins == NULL ) return;
|
||||
break;
|
||||
@ -212,6 +239,13 @@ void SysThreadBase::Resume()
|
||||
// (Called from the context of this thread only)
|
||||
// --------------------------------------------------------------------------------------
|
||||
|
||||
void SysThreadBase::OnStartInThread()
|
||||
{
|
||||
m_RunningLock.Lock();
|
||||
_parent::OnStartInThread();
|
||||
m_ResumeEvent.Post();
|
||||
}
|
||||
|
||||
void SysThreadBase::OnCleanupInThread()
|
||||
{
|
||||
m_ExecMode = ExecMode_NoThreadYet;
|
||||
@ -426,10 +460,7 @@ void SysCoreThread::CpuExecute()
|
||||
|
||||
void SysCoreThread::ExecuteTaskInThread()
|
||||
{
|
||||
m_RunningLock.Lock();
|
||||
|
||||
tls_coreThread = this;
|
||||
m_StartupEvent.Post();
|
||||
|
||||
m_sem_event.WaitRaw();
|
||||
StateCheckInThread();
|
||||
|
||||
@ -74,11 +74,6 @@ protected:
|
||||
// Used to wake up the thread from sleeping when it's in a suspended state.
|
||||
Semaphore m_ResumeEvent;
|
||||
|
||||
// Used to signal the creating thread that the worker has entered the running state.
|
||||
// This is necessary because until the thread has established itself, locking against
|
||||
// m_RunningLock isn't a reliable synchronization tool.
|
||||
Semaphore m_StartupEvent;
|
||||
|
||||
// Locked whenever the thread is not in a suspended state (either closed or paused).
|
||||
// Issue a Wait against this mutex for performing actions that require the thread
|
||||
// to be suspended.
|
||||
@ -108,16 +103,17 @@ public:
|
||||
virtual bool Pause();
|
||||
|
||||
virtual void StateCheckInThread( bool isCancelable = true );
|
||||
virtual void OnCleanupInThread();
|
||||
|
||||
protected:
|
||||
virtual void OnStart();
|
||||
|
||||
// This function is called by Resume immediately prior to releasing the suspension of
|
||||
// the core emulation thread. You should overload this rather than Resume(), since
|
||||
// Resume() has a lot of checks and balances to prevent re-entrance and race conditions.
|
||||
virtual void OnResumeReady() {}
|
||||
|
||||
virtual void OnStart();
|
||||
|
||||
protected:
|
||||
virtual void OnCleanupInThread();
|
||||
virtual void OnStartInThread();
|
||||
|
||||
// Used internally from Resume(), so let's make it private here.
|
||||
virtual void Start();
|
||||
|
||||
@ -45,6 +45,9 @@ bool AppCoreThread::Suspend( bool isBlocking )
|
||||
return retval;
|
||||
}
|
||||
|
||||
|
||||
static int resume_tries = 0;
|
||||
|
||||
void AppCoreThread::Resume()
|
||||
{
|
||||
// Thread control (suspend / resume) should only be performed from the main/gui thread.
|
||||
@ -55,6 +58,7 @@ void AppCoreThread::Resume()
|
||||
Console.WriteLn( "SysResume: State is locked, ignoring Resume request!" );
|
||||
return;
|
||||
}
|
||||
|
||||
_parent::Resume();
|
||||
|
||||
if( m_ExecMode != ExecMode_Opened )
|
||||
@ -67,8 +71,17 @@ void AppCoreThread::Resume()
|
||||
wxGetApp().AddPendingEvent( evt );
|
||||
|
||||
if( (m_ExecMode != ExecMode_Closing) || (m_ExecMode != ExecMode_Pausing) )
|
||||
sApp.SysExecute();
|
||||
{
|
||||
if( ++resume_tries <= 2 )
|
||||
{
|
||||
sApp.SysExecute();
|
||||
}
|
||||
else
|
||||
Console.Status( "SysResume: Multiple resume retries failed. Giving up..." );
|
||||
}
|
||||
}
|
||||
|
||||
resume_tries = 0;
|
||||
}
|
||||
|
||||
void AppCoreThread::OnResumeReady()
|
||||
|
||||
@ -343,12 +343,23 @@ void Pcsx2App::CleanupMess()
|
||||
// app is shutting down, so don't let the system resume for anything. (sometimes there
|
||||
// are pending Resume messages in the queue from previous user actions)
|
||||
|
||||
sys_resume_lock += 10;
|
||||
CoreThread.Cancel();
|
||||
try
|
||||
{
|
||||
sys_resume_lock += 10;
|
||||
CoreThread.Cancel();
|
||||
|
||||
if( m_CorePlugins )
|
||||
m_CorePlugins->Shutdown();
|
||||
if( m_CorePlugins )
|
||||
m_CorePlugins->Shutdown();
|
||||
}
|
||||
catch( Exception::RuntimeError& ex )
|
||||
{
|
||||
// Handle runtime errors gracefully during shutdown. Mostly these are things
|
||||
// that we just don't care about by now, and just want to "get 'er done!" so
|
||||
// we can exit the app. ;)
|
||||
|
||||
Console.Error( ex.FormatDiagnosticMessage() );
|
||||
}
|
||||
|
||||
// Notice: deleting the plugin manager (unloading plugins) here causes Lilypad to crash,
|
||||
// likely due to some pending message in the queue that references lilypad procs.
|
||||
// We don't need to unload plugins anyway tho -- shutdown is plenty safe enough for
|
||||
|
||||
@ -68,6 +68,8 @@ protected:
|
||||
|
||||
class ConsoleTestThread : public Threading::PersistentThread
|
||||
{
|
||||
typedef PersistentThread _parent;
|
||||
|
||||
protected:
|
||||
volatile bool m_done;
|
||||
void ExecuteTaskInThread();
|
||||
@ -82,10 +84,6 @@ public:
|
||||
{
|
||||
m_done = true;
|
||||
}
|
||||
|
||||
protected:
|
||||
void OnStart() {}
|
||||
void OnCleanupInThread() {}
|
||||
};
|
||||
|
||||
// --------------------------------------------------------------------------------------
|
||||
|
||||
@ -416,9 +416,7 @@ namespace Panels
|
||||
void DoNextPlugin( int evtidx );
|
||||
|
||||
protected:
|
||||
void OnStart() {}
|
||||
void ExecuteTaskInThread();
|
||||
void OnCleanupInThread() {}
|
||||
};
|
||||
|
||||
// This panel contains all of the plugin combo boxes. We stick them
|
||||
|
||||
@ -57,7 +57,6 @@ public:
|
||||
virtual ~LoadPluginsTask() throw();
|
||||
|
||||
protected:
|
||||
void OnStart() {}
|
||||
void OnCleanupInThread();
|
||||
void ExecuteTaskInThread();
|
||||
};
|
||||
|
||||
@ -97,8 +97,6 @@ public:
|
||||
}
|
||||
|
||||
protected:
|
||||
void OnStart() {}
|
||||
|
||||
void ExecuteTaskInThread()
|
||||
{
|
||||
SetThreadPriority( GetCurrentThread(), THREAD_PRIORITY_BELOW_NORMAL );
|
||||
@ -165,8 +163,6 @@ protected:
|
||||
Console.Error( ex.FormatDiagnosticMessage() );
|
||||
}
|
||||
}
|
||||
|
||||
void OnCleanupInThread() { }
|
||||
};
|
||||
|
||||
// --------------------------------------------------------------------------------------
|
||||
|
||||
Loading…
Reference in New Issue
Block a user