X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a959b08869abdec7449d49e18cb069e81a3f83e6..b1633d20d6f06a0b5a77d5208c0beddf19324f33:/src/mac/thread.cpp diff --git a/src/mac/thread.cpp b/src/mac/thread.cpp index 86e17b88c0..e59ca72ebe 100644 --- a/src/mac/thread.cpp +++ b/src/mac/thread.cpp @@ -34,6 +34,11 @@ #include "wx/module.h" #include "wx/thread.h" +#ifdef __WXMAC__ +#include <Threads.h> +#include "wx/mac/uma.h" +#endif + // ---------------------------------------------------------------------------- // constants // ---------------------------------------------------------------------------- @@ -63,15 +68,17 @@ static bool gs_waitingForThread = FALSE ; class wxMacStCritical { public : - wxMacStCritical() - { - ThreadBeginCritical() ; - } - ~wxMacStCritical() - { - ThreadEndCritical() ; - } -} ; + wxMacStCritical() + { + if ( UMASystemIsInitialized() ) + ThreadBeginCritical() ; + } + ~wxMacStCritical() + { + if ( UMASystemIsInitialized() ) + ThreadEndCritical() ; + } +}; // ---------------------------------------------------------------------------- // wxMutex implementation @@ -82,10 +89,10 @@ class wxMutexInternal public: wxMutexInternal() { - m_owner = kNoThreadID ; + m_owner = kNoThreadID ; } - ~wxMutexInternal() + ~wxMutexInternal() { } @@ -113,20 +120,22 @@ wxMutex::~wxMutex() wxMutexError wxMutex::Lock() { - wxMacStCritical critical ; - - OSErr err ; - ThreadID current = kNoThreadID; - err = ::MacGetCurrentThread(¤t); - // if we are not the owner, add this thread to the list of waiting threads, stop this thread - // and invoke the scheduler to continue executing the owner's thread - while ( m_internal->m_owner != kNoThreadID && m_internal->m_owner != current) - { - m_internal->m_waiters.Add(current); - err = ::SetThreadStateEndCritical(kCurrentThreadID, kStoppedThreadState, m_internal->m_owner); - err = ::ThreadBeginCritical(); - } - m_internal->m_owner = current; + wxMacStCritical critical ; + if ( UMASystemIsInitialized() ) + { + OSErr err ; + ThreadID current = kNoThreadID; + err = ::MacGetCurrentThread(¤t); + // if we are not the owner, add this thread to the list of waiting threads, stop this thread + // and invoke the scheduler to continue executing the owner's thread + while ( m_internal->m_owner != kNoThreadID && m_internal->m_owner != current) + { + m_internal->m_waiters.Add(current); + err = ::SetThreadStateEndCritical(kCurrentThreadID, kStoppedThreadState, m_internal->m_owner); + err = ::ThreadBeginCritical(); + } + m_internal->m_owner = current; + } m_locked++; return wxMUTEX_NO_ERROR; @@ -134,16 +143,18 @@ wxMutexError wxMutex::Lock() wxMutexError wxMutex::TryLock() { - wxMacStCritical critical ; - - OSErr err ; - ThreadID current = kNoThreadID; - ::MacGetCurrentThread(¤t); - // if we are not the owner, give an error back - if ( m_internal->m_owner != kNoThreadID && m_internal->m_owner != current ) - return wxMUTEX_BUSY; - - m_internal->m_owner = current; + wxMacStCritical critical ; + if ( UMASystemIsInitialized() ) + { + OSErr err ; + ThreadID current = kNoThreadID; + ::MacGetCurrentThread(¤t); + // if we are not the owner, give an error back + if ( m_internal->m_owner != kNoThreadID && m_internal->m_owner != current ) + return wxMUTEX_BUSY; + + m_internal->m_owner = current; + } m_locked++; return wxMUTEX_NO_ERROR; @@ -151,32 +162,39 @@ wxMutexError wxMutex::TryLock() wxMutexError wxMutex::Unlock() { - OSErr err; - err = ::ThreadBeginCritical(); - - if (m_locked > 0) - m_locked--; - - // this mutex is not owned by anybody anmore - m_internal->m_owner = kNoThreadID; - - // now pass on to the first waiting thread - ThreadID firstWaiting = kNoThreadID; - bool found = false; - while (!m_internal->m_waiters.IsEmpty() && !found) - { - firstWaiting = m_internal->m_waiters[0]; - err = ::SetThreadState(firstWaiting, kReadyThreadState, kNoThreadID); - // in case this was not successful (dead thread), we just loop on and reset the id - found = (err != threadNotFoundErr); - if ( !found ) - firstWaiting = kNoThreadID ; - m_internal->m_waiters.RemoveAt(0) ; - } - // now we have a valid firstWaiting thread, which has been scheduled to run next, just end the - // critical section and invoke the scheduler - err = ::SetThreadStateEndCritical(kCurrentThreadID, kReadyThreadState, firstWaiting); + if ( UMASystemIsInitialized() ) + { + OSErr err; + err = ::ThreadBeginCritical(); + + if (m_locked > 0) + m_locked--; + // this mutex is not owned by anybody anmore + m_internal->m_owner = kNoThreadID; + + // now pass on to the first waiting thread + ThreadID firstWaiting = kNoThreadID; + bool found = false; + while (!m_internal->m_waiters.IsEmpty() && !found) + { + firstWaiting = m_internal->m_waiters[0]; + err = ::SetThreadState(firstWaiting, kReadyThreadState, kNoThreadID); + // in case this was not successful (dead thread), we just loop on and reset the id + found = (err != threadNotFoundErr); + if ( !found ) + firstWaiting = kNoThreadID ; + m_internal->m_waiters.RemoveAt(0) ; + } + // now we have a valid firstWaiting thread, which has been scheduled to run next, just end the + // critical section and invoke the scheduler + err = ::SetThreadStateEndCritical(kCurrentThreadID, kReadyThreadState, firstWaiting); + } + else + { + if (m_locked > 0) + m_locked--; + } return wxMUTEX_NO_ERROR; } @@ -189,7 +207,7 @@ class wxConditionInternal public: wxConditionInternal() { - m_excessSignals = 0 ; + m_excessSignals = 0 ; } ~wxConditionInternal() { @@ -197,20 +215,20 @@ public: bool Wait(unsigned long msectimeout) { - wxMacStCritical critical ; - if ( m_excessSignals > 0 ) - { - --m_excessSignals ; - return TRUE ; - } - else if ( msectimeout == 0 ) - { - return FALSE ; - } - else - { - } - /* + wxMacStCritical critical ; + if ( m_excessSignals > 0 ) + { + --m_excessSignals ; + return TRUE ; + } + else if ( msectimeout == 0 ) + { + return FALSE ; + } + else + { + } + /* waiters++; // FIXME this should be MsgWaitForMultipleObjects() as well probably @@ -222,13 +240,13 @@ public: */ return TRUE ; } - void Signal() - { - wxMacStCritical critical ; - } + void Signal() + { + wxMacStCritical critical ; + } wxArrayLong m_waiters ; - wxInt32 m_excessSignals ; + wxInt32 m_excessSignals ; }; wxCondition::wxCondition() @@ -243,7 +261,7 @@ wxCondition::~wxCondition() void wxCondition::Wait() { - (void)m_internal->Wait(0xFFFFFFFFL ); + (void)m_internal->Wait(0xFFFFFFFFL); } bool wxCondition::Wait(unsigned long sec, @@ -259,7 +277,7 @@ void wxCondition::Signal() // someone waits on it. In any case, the system will return it to a non // signalled state afterwards. If multiple threads are waiting, only one // will be woken up. - m_internal->Signal() ; + m_internal->Signal() ; } void wxCondition::Broadcast() @@ -305,7 +323,7 @@ public: } // create a new (suspended) thread (for the given thread object) - bool Create(wxThread *thread); + bool Create(wxThread *thread, unsigned int stackSize); // suspend/resume/terminate bool Suspend(); @@ -319,7 +337,7 @@ public: // thread priority void SetPriority(unsigned int priority); unsigned int GetPriority() const { return m_priority; } - + void SetResult( void *res ) { m_result = res ; } void *GetResult() { return m_result ; } @@ -327,15 +345,14 @@ public: ThreadID GetId() const { return m_tid; } // thread function - static pascal void* MacThreadStart(wxThread* arg); + static pascal void* MacThreadStart(wxThread* arg); private: - wxThreadState m_state; // state, see wxThreadState enum - unsigned int m_priority; // thread priority in "wx" units - ThreadID m_tid; // thread id - void * m_result ; - static ThreadEntryUPP s_threadEntry ; -public : + wxThreadState m_state; // state, see wxThreadState enum + unsigned int m_priority; // thread priority in "wx" units + ThreadID m_tid; // thread id + void* m_result; + static ThreadEntryUPP s_threadEntry ; }; static wxArrayPtrVoid s_threads ; @@ -372,22 +389,22 @@ pascal void* wxThreadInternal::MacThreadStart(wxThread *thread) } void wxThreadInternal::SetPriority(unsigned int priority) { - // Priorities don't exist on Mac + // Priorities don't exist on Mac } -bool wxThreadInternal::Create(wxThread *thread) +bool wxThreadInternal::Create(wxThread *thread, unsigned int stackSize) { - if ( s_threadEntry == NULL ) - { - s_threadEntry = NewThreadEntryUPP( (ThreadEntryProcPtr) MacThreadStart ) ; - } - OSErr err = NewThread(kCooperativeThread, - s_threadEntry, - (void*) thread , - 0 , - kNewSuspend , - &m_result , - &m_tid ) ; + if ( s_threadEntry == NULL ) + { + s_threadEntry = NewThreadEntryUPP( (ThreadEntryProcPtr) MacThreadStart ) ; + } + OSErr err = NewThread( kCooperativeThread, + s_threadEntry, + (void*) thread, + stackSize, + kNewSuspend, + &m_result, + &m_tid ); if ( err != noErr ) { @@ -405,47 +422,47 @@ bool wxThreadInternal::Create(wxThread *thread) bool wxThreadInternal::Suspend() { - OSErr err ; - - ::ThreadBeginCritical(); + OSErr err ; - if ( m_state != STATE_RUNNING ) + ::ThreadBeginCritical(); + + if ( m_state != STATE_RUNNING ) { - ::ThreadEndCritical() ; + ::ThreadEndCritical() ; wxLogSysError(_("Can not suspend thread %x"), m_tid); return FALSE; } m_state = STATE_PAUSED; - err = ::SetThreadStateEndCritical(m_tid, kStoppedThreadState, kNoThreadID); + err = ::SetThreadStateEndCritical(m_tid, kStoppedThreadState, kNoThreadID); return TRUE; } bool wxThreadInternal::Resume() { - ThreadID current ; - OSErr err ; - err = MacGetCurrentThread( ¤t ) ; - - wxASSERT( err == noErr ) ; - wxASSERT( current != m_tid ) ; - - ::ThreadBeginCritical(); - if ( m_state != STATE_PAUSED && m_state != STATE_NEW ) - { - ::ThreadEndCritical() ; + ThreadID current ; + OSErr err ; + err = MacGetCurrentThread( ¤t ) ; + + wxASSERT( err == noErr ) ; + wxASSERT( current != m_tid ) ; + + ::ThreadBeginCritical(); + if ( m_state != STATE_PAUSED && m_state != STATE_NEW ) + { + ::ThreadEndCritical() ; wxLogSysError(_("Can not resume thread %x"), m_tid); return FALSE; - - } - err = ::SetThreadStateEndCritical(m_tid, kReadyThreadState, kNoThreadID); - wxASSERT( err == noErr ) ; - + + } + err = ::SetThreadStateEndCritical(m_tid, kReadyThreadState, kNoThreadID); + wxASSERT( err == noErr ) ; + m_state = STATE_RUNNING; - ::ThreadEndCritical() ; - ::YieldToAnyThread() ; + ::ThreadEndCritical() ; + ::YieldToAnyThread() ; return TRUE; } @@ -453,18 +470,18 @@ bool wxThreadInternal::Resume() // ---------------- wxThread *wxThread::This() { - wxMacStCritical critical ; - - ThreadID current ; - OSErr err ; - - err = MacGetCurrentThread( ¤t ) ; - - for ( int i = 0 ; i < s_threads.Count() ; ++i ) - { - if ( ( (wxThread*) s_threads[i] )->GetId() == current ) - return (wxThread*) s_threads[i] ; - } + wxMacStCritical critical ; + + ThreadID current ; + OSErr err ; + + err = MacGetCurrentThread( ¤t ) ; + + for ( int i = 0 ; i < s_threads.Count() ; ++i ) + { + if ( ( (wxThread*) s_threads[i] )->GetId() == current ) + return (wxThread*) s_threads[i] ; + } wxLogSysError(_("Couldn't get the current thread pointer")); return NULL; @@ -472,10 +489,10 @@ wxThread *wxThread::This() bool wxThread::IsMain() { - ThreadID current ; - OSErr err ; - - err = MacGetCurrentThread( ¤t ) ; + ThreadID current ; + OSErr err ; + + err = MacGetCurrentThread( ¤t ) ; return current == gs_idMainThread; } @@ -485,24 +502,31 @@ bool wxThread::IsMain() void wxThread::Yield() { - ::YieldToAnyThread() ; + ::YieldToAnyThread() ; } void wxThread::Sleep(unsigned long milliseconds) { - clock_t start = clock() ; - do - { - YieldToAnyThread() ; - } while( clock() - start < milliseconds / CLOCKS_PER_SEC ) ; + clock_t start = clock() ; + do + { + YieldToAnyThread() ; + } while( clock() - start < milliseconds / CLOCKS_PER_SEC ) ; } int wxThread::GetCPUCount() { - // we will use whatever MP API will be used for the new MP Macs + // we will use whatever MP API will be used for the new MP Macs return 1; } +unsigned long wxThread::GetCurrentId() +{ + ThreadID current ; + MacGetCurrentThread( ¤t ) ; + return (unsigned long)current; +} + bool wxThread::SetConcurrency(size_t level) { wxASSERT_MSG( IsMain(), _T("should only be called from the main thread") ); @@ -518,7 +542,7 @@ bool wxThread::SetConcurrency(size_t level) // processor system it doesn't make much sense anyhow return level == 1; } - + return TRUE ; } @@ -535,18 +559,18 @@ wxThread::wxThread(wxThreadKind kind) wxThread::~wxThread() { - s_threads.Remove( (void*) this ) ; + s_threads.Remove( (void*) this ) ; delete m_internal; } // create/start thread // ------------------- -wxThreadError wxThread::Create() +wxThreadError wxThread::Create(unsigned int stackSize) { wxCriticalSectionLocker lock(m_critsect); - if ( !m_internal->Create(this) ) + if ( !m_internal->Create(this, stackSize) ) return wxTHREAD_NO_RESOURCE; return wxTHREAD_NO_ERROR; @@ -649,16 +673,16 @@ wxThreadError wxThread::Delete(ExitCode *pRc) #if wxUSE_GUI // simply wait for the thread to terminate - while( TestDestroy() ) - { - ::YieldToAnyThread() ; - } + while( TestDestroy() ) + { + ::YieldToAnyThread() ; + } #else // !wxUSE_GUI // simply wait for the thread to terminate - while( TestDestroy() ) - { - ::YieldToAnyThread() ; - } + while( TestDestroy() ) + { + ::YieldToAnyThread() ; + } #endif // wxUSE_GUI/!wxUSE_GUI if ( IsMain() ) @@ -727,9 +751,9 @@ void wxThread::Exit(ExitCode status) delete this; } - m_internal->SetResult( status ) ; + m_internal->SetResult( status ) ; -/* +/* #if defined(__VISUALC__) || (defined(__BORLANDC__) && (__BORLANDC__ >= 0x500)) _endthreadex((unsigned)status); #else // !VC++ @@ -798,18 +822,20 @@ IMPLEMENT_DYNAMIC_CLASS(wxThreadModule, wxModule) bool wxThreadModule::OnInit() { - long response; - bool hasThreadManager ; - hasThreadManager = Gestalt( gestaltThreadMgrAttr, &response) == noErr && response & 1; -#if GENERATINGPOWERPC || GENERATINGCFM - // verify presence of shared library - hasThreadManager = hasThreadManager && ((Ptr)NewThread != (Ptr)kUnresolvedCFragSymbolAddress); + long response; + bool hasThreadManager ; + hasThreadManager = Gestalt( gestaltThreadMgrAttr, &response) == noErr && response & 1; +#if !TARGET_CARBON +#if GENERATINGCFM + // verify presence of shared library + hasThreadManager = hasThreadManager && ((Ptr)NewThread != (Ptr)kUnresolvedCFragSymbolAddress); #endif - if ( !hasThreadManager ) - { - wxMessageBox( "Error" , "Thread Support is not available on this System" , wxOK ) ; - return FALSE ; - } +#endif + if ( !hasThreadManager ) + { + wxMessageBox( "Error" , "Thread Support is not available on this System" , wxOK ) ; + return FALSE ; + } // no error return for GetCurrentThreadId() MacGetCurrentThread( &gs_idMainThread ) ; @@ -843,10 +869,10 @@ bool WXDLLEXPORT wxGuiOwnedByMainThread() return false ; } -// wake up the main thread +// wake up the main thread void WXDLLEXPORT wxWakeUpMainThread() { - wxMacWakeUp() ; + wxMacWakeUp() ; } bool WXDLLEXPORT wxIsWaitingForThread() @@ -856,3 +882,4 @@ bool WXDLLEXPORT wxIsWaitingForThread() #endif // wxUSE_THREADS +// vi:sts=4:sw=4:et