X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d42e3d592bba139a0214dae1ce87d993ac3b5968..87d77923a6b62816336e53abd4217a119f14675d:/include/wx/thread.h

diff --git a/include/wx/thread.h b/include/wx/thread.h
index b8585439be..401d5f5937 100644
--- a/include/wx/thread.h
+++ b/include/wx/thread.h
@@ -23,7 +23,7 @@
 #if wxUSE_THREADS
 
 // only for wxUSE_THREADS - otherwise we'd get undefined symbols
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(__APPLE__)
     #pragma interface "thread.h"
 #endif
 
@@ -32,8 +32,6 @@
     #undef Yield
 #endif
 
-#include "wx/module.h"
-
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
@@ -241,11 +239,23 @@ private:
 #elif defined(__WXMSW__)
     // we can't allocate any memory in the ctor, so use placement new -
     // unfortunately, we have to hardcode the sizeof() here because we can't
-    // include windows.h from this public header
+    // include windows.h from this public header and we also have to use the
+    // union to force the correct (i.e. maximal) alignment
     //
     // if CRITICAL_SECTION size changes in Windows, you'll get an assert from
     // thread.cpp and will need to increase the buffer size
-    char m_buffer[24];
+    //
+    // finally, we need this typedef instead of declaring m_buffer directly
+    // because otherwise the assert mentioned above wouldn't compile with some
+    // compilers (notably CodeWarrior 8)
+    typedef char wxCritSectBuffer[24];
+    union
+    {
+        unsigned long m_dummy1;
+        void *m_dummy2;
+
+        wxCritSectBuffer m_buffer;
+    };
 #else
     // nothing for OS/2
 #endif // Unix/Win32/OS2
@@ -584,8 +594,13 @@ void WXDLLEXPORT wxMutexGuiLeave();
 #define wxENTER_CRIT_SECT(cs)   (cs).Enter()
 #define wxLEAVE_CRIT_SECT(cs)   (cs).Leave()
 #define wxCRIT_SECT_DECLARE(cs) static wxCriticalSection cs
+#define wxCRIT_SECT_DECLARE_MEMBER(cs) wxCriticalSection cs
 #define wxCRIT_SECT_LOCKER(name, cs)  wxCriticalSectionLocker name(cs)
 
+// function for checking if we're in the main thread which may be used whether
+// wxUSE_THREADS is 0 or 1
+inline bool wxIsMainThread() { return wxThread::IsMain(); }
+
 #else // !wxUSE_THREADS
 
 // no thread support
@@ -597,8 +612,12 @@ inline void WXDLLEXPORT wxMutexGuiLeave() { }
 #define wxENTER_CRIT_SECT(cs)
 #define wxLEAVE_CRIT_SECT(cs)
 #define wxCRIT_SECT_DECLARE(cs)
+#define wxCRIT_SECT_DECLARE_MEMBER(cs)
 #define wxCRIT_SECT_LOCKER(name, cs)
 
+// if there is only one thread, it is always the main one
+inline bool wxIsMainThread() { return true; }
+
 #endif // wxUSE_THREADS/!wxUSE_THREADS
 
 // mark part of code as being a critical section: this macro declares a