add support for wxStrnlen for those platforms where it's available

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

diff --git a/include/wx/log.h b/include/wx/log.h
index de2b9b817a8d19ce26c71df284a0403e76e759c7..83ea99678ea20d4901ee6c071f8f1088ea55c011 100644 (file)
--- a/include/wx/log.h
+++ b/include/wx/log.h
@@ -51,9 +51,11 @@ typedef unsigned long wxLogLevel;
 
 #include "wx/arrstr.h"
 
+#ifndef __WXPALMOS5__
 #ifndef __WXWINCE__
     #include <time.h>   // for time_t
 #endif
+#endif // ! __WXPALMOS5__
 
 #include "wx/dynarray.h"
 
@@ -70,10 +72,10 @@ typedef unsigned long wxLogLevel;
 // ----------------------------------------------------------------------------
 
 #if wxUSE_GUI
-    class WXDLLIMPEXP_CORE wxTextCtrl;
-    class WXDLLIMPEXP_CORE wxLogFrame;
-    class WXDLLIMPEXP_CORE wxFrame;
-    class WXDLLIMPEXP_CORE wxWindow;
+    class WXDLLIMPEXP_FWD_CORE wxTextCtrl;
+    class WXDLLIMPEXP_FWD_CORE wxLogFrame;
+    class WXDLLIMPEXP_FWD_CORE wxFrame;
+    class WXDLLIMPEXP_FWD_CORE wxWindow;
 #endif // wxUSE_GUI
 
 // ----------------------------------------------------------------------------
@@ -196,8 +198,7 @@ public:
     static void SetTraceMask(wxTraceMask ulMask) { ms_ulTraceMask = ulMask; }
 
     // add string trace mask
-    static void AddTraceMask(const wxString& str)
-        { ms_aTraceMasks.push_back(str); }
+    static void AddTraceMask(const wxString& str);
 
     // add string trace mask
     static void RemoveTraceMask(const wxString& str);
@@ -205,14 +206,18 @@ public:
     // remove all string trace masks
     static void ClearTraceMasks();
 
-    // get string trace masks
-    static const wxArrayString &GetTraceMasks() { return ms_aTraceMasks; }
+    // get string trace masks: note that this is MT-unsafe if other threads can
+    // call AddTraceMask() concurrently
+    static const wxArrayString& GetTraceMasks() { return ms_aTraceMasks; }
 
-    // sets the timestamp string: this is used as strftime() format string
-    // for the log targets which add time stamps to the messages - set it
-    // to NULL to disable time stamping completely.
+    // sets the time stamp string format: this is used as strftime() format
+    // string for the log targets which add time stamps to the messages; set
+    // it to empty string to disable time stamping completely.
     static void SetTimestamp(const wxString& ts) { ms_timestamp = ts; }
 
+    // disable time stamping of log messages
+    static void DisableTimestamp() { SetTimestamp(wxEmptyString); }
+
 
     // accessors
 
@@ -298,20 +303,25 @@ protected:
     #define wxSUPPRESS_DOLOGSTRING_HIDE_WARNING()
 #endif
 
-    // log a line containing the number of times the previous message was
-    // repeated
-    // returns: the number
-    static unsigned DoLogNumberOfRepeats();
+    // log a message indicating the number of times the previous message was
+    // repeated if ms_prevCounter > 0, does nothing otherwise; return the old
+    // value of ms_prevCounter
+    unsigned LogLastRepeatIfNeeded();
 
 private:
+    // implement of LogLastRepeatIfNeeded(): it assumes that the
+    // caller had already locked ms_prevCS
+    unsigned LogLastRepeatIfNeededUnlocked();
+
     // static variables
     // ----------------
 
-    // traditional behaviour or counting repetitions
+    // if true, don't log the same message multiple times, only log it once
+    // with the number of times it was repeated
     static bool        ms_bRepetCounting;
+
     static wxString    ms_prevString;   // previous message that was logged
-    // how many times the previous message was logged
-    static unsigned    ms_prevCounter;
+    static unsigned    ms_prevCounter;  // how many times it was repeated
     static time_t      ms_prevTimeStamp;// timestamp of the previous message
     static wxLogLevel  ms_prevLevel;    // level of the previous message
 
@@ -616,6 +626,13 @@ WXDLLIMPEXP_BASE const wxChar* wxSysErrorMsg(unsigned long nErrCode = 0);
     #define WX_WATCOM_ONLY_CODE( x )
 #endif
 
+#if defined(__WATCOMC__) || defined(__MINGW32__)
+    // Mingw has similar problem with wxLogSysError:
+    #define WX_WATCOM_OR_MINGW_ONLY_CODE( x )  x
+#else
+    #define WX_WATCOM_OR_MINGW_ONLY_CODE( x )
+#endif
+
 // log functions do nothing at all
 #define DECLARE_LOG_FUNCTION(level)                                         \
     WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 1, (const wxString&))           \
@@ -629,7 +646,7 @@ WXDLLIMPEXP_BASE const wxChar* wxSysErrorMsg(unsigned long nErrCode = 0);
 
 #define DECLARE_LOG_FUNCTION2_EXP(level, argclass, arg, expdecl)            \
     WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 2, (argclass, const wxString&)) \
-    WX_WATCOM_ONLY_CODE(                                                    \
+    WX_WATCOM_OR_MINGW_ONLY_CODE(                                           \
         WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 2, (argclass, const char*)) \
         WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 2, (argclass, const wchar_t*)) \
         WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 2, (argclass, const wxCStrData&)) \
@@ -681,7 +698,7 @@ DECLARE_LOG_FUNCTION(Status);
 
 #if wxUSE_GUI
     // this one is the same as previous except that it allows to explicitly
-    class WXDLLEXPORT wxFrame;
+    class WXDLLIMPEXP_FWD_CORE wxFrame;
     // specify the frame to which the output should go
     DECLARE_LOG_FUNCTION2_EXP(Status, wxFrame *, pFrame, WXDLLIMPEXP_CORE);
 #endif // wxUSE_GUI
@@ -734,7 +751,14 @@ DECLARE_LOG_FUNCTION2(SysError, unsigned long, lErrCode);
     // empty functions if their parameters are complicated enough, but by
     // defining them as an empty inline function we ensure that even dumbest
     // compilers optimise them away
+#ifdef __BORLANDC__
+    // but Borland gives "W8019: Code has no effect" for wxLogNop() so we need
+    // to define it differently for it to avoid these warnings (same problem as
+    // with wxUnusedVar())
+    #define wxLogNop() { }
+#else
     inline void wxLogNop() { }
+#endif
 
     #define wxVLogDebug(fmt, valist) wxLogNop()
     #define wxVLogTrace(mask, fmt, valist) wxLogNop()