Rebake from clean wx tree.

[wxWidgets.git] / include / wx / thread.h

diff --git a/include/wx/thread.h b/include/wx/thread.h
index 9e07b4e8215867854fdf79750c208f21e0057e3b..7e85ae23149f227d8786f027fb12ccfc5b5fe9be 100644 (file)
--- a/include/wx/thread.h
+++ b/include/wx/thread.h
@@ -161,7 +161,7 @@ protected:
 
     friend class wxConditionInternal;
 
-    DECLARE_NO_COPY_CLASS(wxMutex)
+    wxDECLARE_NO_COPY_CLASS(wxMutex);
 };
 
 // a helper class which locks the mutex in the ctor and unlocks it in the dtor:
@@ -266,7 +266,7 @@ private:
     };
 #endif // Unix&OS2/Win32
 
-    DECLARE_NO_COPY_CLASS(wxCriticalSection)
+    wxDECLARE_NO_COPY_CLASS(wxCriticalSection);
 };
 
 #if wxCRITSECT_IS_MUTEX
@@ -301,7 +301,7 @@ public:
 private:
     wxCriticalSection& m_critsect;
 
-    DECLARE_NO_COPY_CLASS(wxCriticalSectionLocker)
+    wxDECLARE_NO_COPY_CLASS(wxCriticalSectionLocker);
 };
 
 // ----------------------------------------------------------------------------
@@ -364,7 +364,7 @@ public:
 private:
     wxConditionInternal *m_internal;
 
-    DECLARE_NO_COPY_CLASS(wxCondition)
+    wxDECLARE_NO_COPY_CLASS(wxCondition);
 };
 
 #if WXWIN_COMPATIBILITY_2_6
@@ -409,7 +409,7 @@ public:
 private:
     wxSemaphoreInternal *m_internal;
 
-    DECLARE_NO_COPY_CLASS(wxSemaphore)
+    wxDECLARE_NO_COPY_CLASS(wxSemaphore);
 };
 
 // ----------------------------------------------------------------------------
@@ -447,7 +447,17 @@ public:
     static wxThread *This();
 
         // Returns true if current thread is the main thread.
-    static bool IsMain();
+        //
+        // Notice that it also returns true if main thread id hadn't been
+        // initialized yet on the assumption that it's too early in wx startup
+        // process for any other threads to have been created in this case.
+    static bool IsMain()
+    {
+        return !ms_idMainThread || GetCurrentId() == ms_idMainThread;
+    }
+
+        // Return the main thread id
+    static wxThreadIdType GetMainId() { return ms_idMainThread; }
 
         // Release the rest of our time slice letting the other threads run
     static void Yield();
@@ -466,7 +476,7 @@ public:
         // Get the platform specific thread ID and return as a long.  This
         // can be used to uniquely identify threads, even if they are not
         // wxThreads.  This is used by wxPython.
-   static wxThreadIdType GetCurrentId();
+    static wxThreadIdType GetCurrentId();
 
         // sets the concurrency level: this is, roughly, the number of threads
         // the system tries to schedule to run in parallel. 0 means the
@@ -506,7 +516,7 @@ public:
         // does it!
         //
         // will fill the rc pointer with the thread exit code if it's !NULL
-    wxThreadError Delete(ExitCode *rc = (ExitCode *)NULL);
+    wxThreadError Delete(ExitCode *rc = NULL);
 
         // waits for a joinable thread to finish and returns its exit code
         //
@@ -586,6 +596,11 @@ private:
     virtual void OnExit() { }
 
     friend class wxThreadInternal;
+    friend class wxThreadModule;
+
+
+    // the main thread identifier, should be set on startup
+    static wxThreadIdType ms_idMainThread;
 
     // the (platform-dependent) thread class implementation
     wxThreadInternal *m_internal;
@@ -633,11 +648,10 @@ class WXDLLIMPEXP_BASE wxThreadHelper
 private:
     void KillThread()
     {
-        // If detached thread is about to finish, it will set
-        // m_thread to NULL so don't delete it then
-        // But if KillThread is called before detached thread
-        // sets it to NULL, then the thread object still
-        // exists and can be killed
+        // If wxThreadHelperThread is detached and is about to finish, it will
+        // set m_thread to NULL so don't delete it then.
+        // But if KillThread is called before wxThreadHelperThread (in detached mode)
+        // sets it to NULL, then the thread object still exists and can be killed
         wxCriticalSectionLocker locker(m_critSection);
 
         if ( m_thread )
@@ -748,11 +762,13 @@ inline void wxMutexGuiLeave() { }
 
 // macros for entering/leaving critical sections which may be used without
 // having to take them inside "#if wxUSE_THREADS"
-// (the implementation uses dummy structs to force semicolon after the macro)
+// (the implementation uses dummy structs to force semicolon after the macro;
+// also notice that Watcom doesn't like declaring a struct as a member so we
+// need to actually define it in wxCRIT_SECT_DECLARE_MEMBER)
 #define wxENTER_CRIT_SECT(cs)            do {} while (0)
 #define wxLEAVE_CRIT_SECT(cs)            do {} while (0)
 #define wxCRIT_SECT_DECLARE(cs)          struct wxDummyCS##cs
-#define wxCRIT_SECT_DECLARE_MEMBER(cs)   struct wxDummyCSMember##cs
+#define wxCRIT_SECT_DECLARE_MEMBER(cs)   struct wxDummyCSMember##cs { }
 #define wxCRIT_SECT_LOCKER(name, cs)     struct wxDummyCSLocker##name
 
 // if there is only one thread, it is always the main one