// Purpose: Misc debug functions and macros
// Author: Vadim Zeitlin
// Created: 29/01/98
-// RCS-ID: $Id$
// Copyright: (c) 1998-2009 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_DEBUG_H_
#define _WX_DEBUG_H_
-#if !defined(__WXPALMOS5__) && !defined(__WXWINCE__)
+#if !defined(__WXWINCE__)
#include <assert.h>
#endif // systems without assert.h
#include "wx/chartype.h" // for __TFILE__ and wxChar
#include "wx/cpp.h" // for __WXFUNCTION__
+#include "wx/dlimpexp.h" // for WXDLLIMPEXP_FWD_BASE
class WXDLLIMPEXP_FWD_BASE wxString;
class WXDLLIMPEXP_FWD_BASE wxCStrData;
2: Maximal (at least for now): asserts which are "expensive"
(performance-wise) or only make sense for finding errors in wxWidgets
itself, as opposed to bugs in applications using it, are also enabled.
-
- For compatibility reasons, currently wxDEBUG_LEVEL is defined if
- __WXDEBUG__ is defined but in the near future (2.9.1) the role of the flags
- will change and wxDEBUG_LEVEL will be the primary value with __WXDEBUG__
- only used for compatibility.
*/
-// if _DEBUG is defined (MS VC++ and others use it in debug builds), define
-// __WXDEBUG__ too
-#ifdef _DEBUG
+// unless wxDEBUG_LEVEL is predefined (by configure or via wx/setup.h under
+// Windows), use the default
+#if !defined(wxDEBUG_LEVEL)
+ #define wxDEBUG_LEVEL 1
+#endif // !defined(wxDEBUG_LEVEL)
+
+/*
+ __WXDEBUG__ is defined when wxDEBUG_LEVEL != 0. This is done mostly for
+ compatibility but it also provides a simpler way to check if asserts and
+ debug logging is enabled at all.
+ */
+#if wxDEBUG_LEVEL > 0
#ifndef __WXDEBUG__
#define __WXDEBUG__
- #endif // !__WXDEBUG__
-#endif // _DEBUG
-
-// if NDEBUG is defined (<assert.h> uses it), undef __WXDEBUG__ and WXDEBUG
-#ifdef NDEBUG
+ #endif
+#else
#undef __WXDEBUG__
- #undef WXDEBUG
-#endif // NDEBUG
+#endif
-// if __WXDEBUG__ is defined, make sure that WXDEBUG is defined and >= 1
+// Finally there is also a very old WXDEBUG macro not used anywhere at all, it
+// is only defined for compatibility.
#ifdef __WXDEBUG__
#if !defined(WXDEBUG) || !WXDEBUG
#undef WXDEBUG
#endif // !WXDEBUG
#endif // __WXDEBUG__
-// temporarily define wxDEBUG_LEVEL as function of __WXDEBUG__
-#if !defined(wxDEBUG_LEVEL)
- #ifdef __WXDEBUG__
- #define wxDEBUG_LEVEL 1
- #else
- #define wxDEBUG_LEVEL 0
- #endif
-#endif // !defined(wxDEBUG_LEVEL)
-
// ----------------------------------------------------------------------------
// Handling assertion failures
// ----------------------------------------------------------------------------
return old;
}
+/*
+ Reset the default assert handler.
+
+ This may be used to enable asserts, which are disabled by default in this
+ case, for programs built in release build (NDEBUG defined).
+ */
+extern void WXDLLIMPEXP_BASE wxSetDefaultAssertHandler();
+
#else // !wxDEBUG_LEVEL
// provide empty stubs in case assertions are completely disabled
return NULL;
}
+inline void wxSetDefaultAssertHandler() { }
+
#endif // wxDEBUG_LEVEL/!wxDEBUG_LEVEL
// simply a synonym for wxSetAssertHandler(NULL)
inline void wxDisableAsserts() { wxSetAssertHandler(NULL); }
+/*
+ A macro which disables asserts for applications compiled in release build.
+
+ By default, wxIMPLEMENT_APP (or rather wxIMPLEMENT_WXWIN_MAIN) disable the
+ asserts in the applications compiled in the release build by calling this.
+ It does nothing if NDEBUG is not defined.
+ */
+#ifdef NDEBUG
+ #define wxDISABLE_ASSERTS_IN_RELEASE_BUILD() wxDisableAsserts()
+#else
+ #define wxDISABLE_ASSERTS_IN_RELEASE_BUILD()
+#endif
+
#if wxDEBUG_LEVEL
/*
wxOnAssert() is used by the debugging macros defined below. Different
- overloads are needed because these macros can be used with or without _T().
+ overloads are needed because these macros can be used with or without wxT().
All of them are implemented in src/common/appcmn.cpp and unconditionally
call wxTheAssertHandler so the caller must check that it is non-NULL
#if wxUSE_UNICODE
// these overloads are the ones typically used by debugging macros: we have to
-// provide wxChar* msg version because it's common to use _T() in the macros
+// provide wxChar* msg version because it's common to use wxT() in the macros
// and finally, we can't use const wx(char)* msg = NULL, because that would
// be ambiguous
//
// also notice that these functions can't be inline as wxString is not defined
// yet (and can't be as wxString code itself may use assertions)
-extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const char *file,
int line,
const char *func,
const char *cond);
-extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const char *file,
int line,
const char *func,
const char *cond,
const char *msg);
-extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const char *file,
int line,
const char *func,
const char *cond,
- const wxChar *msg);
+ const wxChar *msg) ;
#endif /* wxUSE_UNICODE */
// this version is for compatibility with wx 2.8 Unicode build only, we don't
// use it ourselves any more except in ANSI-only build in which case it is all
// we need
-extern void WXDLLIMPEXP_BASE wxOnAssert(const wxChar *file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const wxChar *file,
int line,
const char *func,
const wxChar *cond,
// these overloads work when msg passed to debug macro is a string and we
// also have to provide wxCStrData overload to resolve ambiguity which would
// otherwise arise from wxASSERT( s.c_str() )
-extern void WXDLLIMPEXP_BASE wxOnAssert(const wxString& file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const wxString& file,
int line,
const wxString& func,
const wxString& cond,
const wxString& msg);
-extern void WXDLLIMPEXP_BASE wxOnAssert(const wxString& file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const wxString& file,
int line,
const wxString& func,
const wxString& cond);
-extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const char *file,
int line,
const char *func,
const char *cond,
const wxCStrData& msg);
-extern void WXDLLIMPEXP_BASE wxOnAssert(const char *file,
+extern WXDLLIMPEXP_BASE void wxOnAssert(const char *file,
int line,
const char *func,
const char *cond,
this macro only does anything if wxDEBUG_LEVEL >= 2.
*/
#if wxDEBUG_LEVEL
- // call this function to break into the debugger unconditionally (assuming
- // the program is running under debugger, of course)
- extern void WXDLLIMPEXP_BASE wxTrap();
+ // wxTrap() can be used to break into the debugger unconditionally
+ // (assuming the program is running under debugger, of course).
+ //
+ // If possible, we prefer to define it as a macro rather than as a function
+ // to open the debugger at the position where we trapped and not inside the
+ // trap function itself which is not very useful.
+ #if wxCHECK_VISUALC_VERSION(7)
+ #define wxTrap() __debugbreak()
+ #else
+ extern WXDLLIMPEXP_BASE void wxTrap();
+ #endif // Win VisualC
- // assert checks if the condition is true and calls the assert handler with
- // the provided message if it isn't
+ // Global flag used to indicate that assert macros should call wxTrap(): it
+ // is set by the default assert handler if the user answers yes to the
+ // question of whether to trap.
+ extern WXDLLIMPEXP_DATA_BASE(bool) wxTrapInAssert;
+
+ // This macro checks if the condition is true and calls the assert handler
+ // with the provided message if it isn't and finally traps if the special
+ // flag indicating that it should do it was set by the handler.
//
- // NB: the macro is defined like this to ensure that nested if/else
- // statements containing it are compiled in the same way whether it is
- // defined as empty or not; also notice that we can't use ";" instead
- // of "{}" as some compilers warn about "possible unwanted ;" then
+ // Notice that we don't use the handler return value for compatibility
+ // reasons (if we changed its return type, we'd need to change wxApp::
+ // OnAssertFailure() too which would break user code overriding it), hence
+ // the need for the ugly global flag.
#define wxASSERT_MSG(cond, msg) \
- if ( !wxTheAssertHandler || (cond) ) \
- {} \
- else \
- wxOnAssert(__FILE__, __LINE__, __WXFUNCTION__, #cond, msg)
+ wxSTATEMENT_MACRO_BEGIN \
+ if ( wxTheAssertHandler && !(cond) && \
+ (wxOnAssert(__FILE__, __LINE__, __WXFUNCTION__, \
+ #cond, msg), wxTrapInAssert) ) \
+ { \
+ wxTrapInAssert = false; \
+ wxTrap(); \
+ } \
+ wxSTATEMENT_MACRO_END
// a version without any additional message, don't use unless condition
// itself is fully self-explanatory
// wxFAIL is a special form of assert: it always triggers (and so is
// usually used in normally unreachable code)
- #define wxFAIL_COND_MSG(cond, msg) \
- if ( !wxTheAssertHandler ) \
- {} \
- else \
- wxOnAssert(__FILE__, __LINE__, __WXFUNCTION__, cond, msg)
+ #define wxFAIL_COND_MSG(cond, msg) \
+ wxSTATEMENT_MACRO_BEGIN \
+ if ( wxTheAssertHandler && \
+ (wxOnAssert(__FILE__, __LINE__, __WXFUNCTION__, \
+ cond, msg), wxTrapInAssert) ) \
+ { \
+ wxTrapInAssert = false; \
+ wxTrap(); \
+ } \
+ wxSTATEMENT_MACRO_END
+
#define wxFAIL_MSG(msg) wxFAIL_COND_MSG("Assert failure", msg)
#define wxFAIL wxFAIL_MSG((const char*)NULL)
#else // !wxDEBUG_LEVEL
#define wxASSERT_LEVEL_2(cond)
#endif
+// This is simply a wrapper for the standard abort() which is not available
+// under all platforms.
+//
+// It isn't really debug-related but there doesn't seem to be any better place
+// for it, so declare it here and define it in appbase.cpp, together with
+// wxTrap().
+extern void WXDLLIMPEXP_BASE wxAbort();
/*
wxCHECK macros always check their conditions, setting debug level to 0 only
wxCHECK_RET( p != NULL, "pointer can't be NULL" )
*/
-// the generic macro: takes the condition to check, the statement to be execute
+// the generic macro: takes the condition to check, the statement to be executed
// in case the condition is false and the message to pass to the assert handler
#define wxCHECK2_MSG(cond, op, msg) \
if ( cond ) \
unsigned int msg: expr; \
wxMAKE_UNIQUE_ASSERT_NAME() { wxUnusedVar(msg); } \
}
+#elif defined( __VMS )
+namespace wxdebug{
+
+// HP aCC cannot deal with missing names for template value parameters
+template <bool x> struct STATIC_ASSERTION_FAILURE;
+
+template <> struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; };
+
+// HP aCC cannot deal with missing names for template value parameters
+template<int x> struct static_assert_test{};
+
+}
+ #define WX_JOIN( X, Y ) X##Y
+ #define WX_STATIC_ASSERT_BOOL_CAST(x) (bool)(x)
+ #define wxCOMPILE_TIME_ASSERT(expr, msg) \
+ typedef ::wxdebug::static_assert_test<\
+ sizeof(::wxdebug::STATIC_ASSERTION_FAILURE< WX_STATIC_ASSERT_BOOL_CAST( expr ) >)>\
+ WX_JOIN(wx_static_assert_typedef_, __LINE__)
#else
#define wxCOMPILE_TIME_ASSERT(expr, msg) \
struct wxMAKE_UNIQUE_ASSERT_NAME { unsigned int msg: expr; }
/*
Return true if we're running under debugger.
- Currently this only really works under Win32 and Mac in CodeWarrior builds,
- it always returns false in other cases.
+ Currently only really works under Win32 and just returns false elsewhere.
*/
-#if defined(__WXMAC__) || defined(__WIN32__)
+#if defined(__WIN32__)
extern bool WXDLLIMPEXP_BASE wxIsDebuggerRunning();
#else // !Mac
inline bool wxIsDebuggerRunning() { return false; }
projects / wxWidgets.git / blobdiff