// Author: Vadim Zeitlin
// Modified by:
// Created: 29/01/98
-// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#define _WX_LOG_H_
#include "wx/defs.h"
+#include "wx/cpp.h"
// ----------------------------------------------------------------------------
// types
#define wxTraceResAlloc 0x0004 // trace GDI resource allocation
#define wxTraceRefCount 0x0008 // trace various ref counting operations
- #ifdef __WXMSW__
+ #ifdef __WINDOWS__
#define wxTraceOleCalls 0x0100 // OLE interface calls
#endif
#include "wx/string.h"
#include "wx/strvararg.h"
+// ----------------------------------------------------------------------------
+// forward declarations
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_FWD_BASE wxObject;
+
+#if wxUSE_GUI
+ class WXDLLIMPEXP_FWD_CORE wxFrame;
+#endif // wxUSE_GUI
+
#if wxUSE_LOG
#include "wx/arrstr.h"
-#ifndef __WXPALMOS5__
#ifndef __WXWINCE__
#include <time.h> // for time_t
#endif
-#endif // ! __WXPALMOS5__
#include "wx/dynarray.h"
#include "wx/hashmap.h"
#endif
#endif
-// ----------------------------------------------------------------------------
-// forward declarations
-// ----------------------------------------------------------------------------
-
-class WXDLLIMPEXP_FWD_BASE wxObject;
-
-#if wxUSE_GUI
- class WXDLLIMPEXP_FWD_CORE wxFrame;
-#endif // wxUSE_GUI
-
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
#define wxTRACE_ResAlloc wxT("resalloc") // trace GDI resource allocation
#define wxTRACE_RefCount wxT("refcount") // trace various ref counting operations
-#ifdef __WXMSW__
+#ifdef __WINDOWS__
#define wxTRACE_OleCalls wxT("ole") // OLE interface calls
#endif
wxLogRecordInfo info;
};
+// ----------------------------------------------------------------------------
+// Derive from this class to customize format of log messages.
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxLogFormatter
+{
+public:
+ // Default constructor.
+ wxLogFormatter() { }
+
+ // Trivial but virtual destructor for the base class.
+ virtual ~wxLogFormatter() { }
+
+
+ // Override this method to implement custom formatting of the given log
+ // record. The default implementation simply prepends a level-dependent
+ // prefix to the message and optionally adds a time stamp.
+ virtual wxString Format(wxLogLevel level,
+ const wxString& msg,
+ const wxLogRecordInfo& info) const;
+
+protected:
+ // Override this method to change just the time stamp formatting. It is
+ // called by default Format() implementation.
+ virtual wxString FormatTime(time_t t) const;
+};
+
+
// ----------------------------------------------------------------------------
// derive from this class to redirect (or suppress, or ...) log messages
// normally, only a single instance of this class exists but it's not enforced
{
public:
// ctor
- wxLog() { }
+ wxLog() : m_formatter(new wxLogFormatter) { }
// make dtor virtual for all derived classes
virtual ~wxLog();
// ----------------------
// these functions allow to completely disable all log messages or disable
- // log messages at level less important than specified
+ // log messages at level less important than specified for the current
+ // thread
// is logging enabled at all now?
- static bool IsEnabled() { return ms_doLog; }
+ static bool IsEnabled()
+ {
+#if wxUSE_THREADS
+ if ( !wxThread::IsMain() )
+ return IsThreadLoggingEnabled();
+#endif // wxUSE_THREADS
+
+ return ms_doLog;
+ }
// change the flag state, return the previous one
- static bool EnableLogging(bool doIt = true)
- { bool doLogOld = ms_doLog; ms_doLog = doIt; return doLogOld; }
+ static bool EnableLogging(bool enable = true)
+ {
+#if wxUSE_THREADS
+ if ( !wxThread::IsMain() )
+ return EnableThreadLogging(enable);
+#endif // wxUSE_THREADS
+ bool doLogOld = ms_doLog;
+ ms_doLog = enable;
+ return doLogOld;
+ }
// return the current global log level
static wxLogLevel GetLogLevel() { return ms_logLevel; }
// -----------------
// flush shows all messages if they're not logged immediately (FILE
- // and iostream logs don't need it, but wxGuiLog does to avoid showing
+ // and iostream logs don't need it, but wxLogGui does to avoid showing
// 17 modal dialogs one after another)
virtual void Flush();
- // flush the active target if any
- static void FlushActive()
- {
- if ( !ms_suspendCount )
- {
- wxLog *log = GetActiveTarget();
- if ( log )
- log->Flush();
- }
- }
+ // flush the active target if any and also output any pending messages from
+ // background threads
+ static void FlushActive();
- // only one sink is active at each moment
- // get current log target, will call wxApp::CreateLogTarget() to
- // create one if none exists
+ // only one sink is active at each moment get current log target, will call
+ // wxAppTraits::CreateLogTarget() to create one if none exists
static wxLog *GetActiveTarget();
- // change log target, pLogger may be NULL
- static wxLog *SetActiveTarget(wxLog *pLogger);
+ // change log target, logger may be NULL
+ static wxLog *SetActiveTarget(wxLog *logger);
+
+#if wxUSE_THREADS
+ // change log target for the current thread only, shouldn't be called from
+ // the main thread as it doesn't use thread-specific log target
+ static wxLog *SetThreadActiveTarget(wxLog *logger);
+#endif // wxUSE_THREADS
// suspend the message flushing of the main target until the next call
// to Resume() - this is mainly for internal use (to prevent wxYield()
// get string trace masks: note that this is MT-unsafe if other threads can
// call AddTraceMask() concurrently
- static const wxArrayString& GetTraceMasks() { return ms_aTraceMasks; }
+ static const wxArrayString& GetTraceMasks();
+
+ // is this trace mask in the list?
+ static bool IsAllowedTraceMask(const wxString& mask);
+
+
+ // log formatting
+ // -----------------
+
+ // Change wxLogFormatter object used by wxLog to format the log messages.
+ //
+ // wxLog takes ownership of the pointer passed in but the caller is
+ // responsible for deleting the returned pointer.
+ wxLogFormatter* SetFormatter(wxLogFormatter* formatter);
+
+
+ // All the time stamp related functions below only work when the default
+ // wxLogFormatter is being used. Defining a custom formatter overrides them
+ // as it could use its own time stamp format or format messages without
+ // using time stamp at all.
+
// 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
static void DisableTimestamp() { SetTimestamp(wxEmptyString); }
- // is this trace mask in the list?
- static bool IsAllowedTraceMask(const wxString& mask);
-
// get the current timestamp format string (maybe empty)
static const wxString& GetTimestamp() { return ms_timestamp; }
// helpers: all functions in this section are mostly for internal use only,
// don't call them from your code even if they are not formally deprecated
- // put the time stamp into the string if ms_timestamp != NULL (don't
- // change it otherwise)
+ // put the time stamp into the string if ms_timestamp is not empty (don't
+ // change it otherwise); the first overload uses the current time.
static void TimeStamp(wxString *str);
+ static void TimeStamp(wxString *str, time_t t);
// these methods should only be called from derived classes DoLogRecord(),
// DoLogTextAtLevel() and DoLogText() implementations respectively and
#if WXWIN_COMPATIBILITY_2_6
// this function doesn't do anything any more, don't call it
- wxDEPRECATED_INLINE(
- static wxChar *SetLogBuffer(wxChar *, size_t = 0), return NULL;
+ static wxDEPRECATED_INLINE(
+ wxChar *SetLogBuffer(wxChar *, size_t = 0), return NULL;
);
#endif // WXWIN_COMPATIBILITY_2_6
// don't use integer masks any more, use string trace masks instead
#if WXWIN_COMPATIBILITY_2_8
- wxDEPRECATED_INLINE( static void SetTraceMask(wxTraceMask ulMask),
+ static wxDEPRECATED_INLINE( void SetTraceMask(wxTraceMask ulMask),
ms_ulTraceMask = ulMask; )
// this one can't be marked deprecated as it's used in our own wxLogger
unsigned LogLastRepeatIfNeeded();
private:
- // implement of LogLastRepeatIfNeeded(): it assumes that the
- // caller had already locked GetPreviousLogCS()
- unsigned LogLastRepeatIfNeededUnlocked();
+#if wxUSE_THREADS
+ // called from FlushActive() to really log any buffered messages logged
+ // from the other threads
+ void FlushThreadMessages();
+
+ // these functions are called for non-main thread only by IsEnabled() and
+ // EnableLogging() respectively
+ static bool IsThreadLoggingEnabled();
+ static bool EnableThreadLogging(bool enable = true);
+#endif // wxUSE_THREADS
+
+ // get the active log target for the main thread, auto-creating it if
+ // necessary
+ //
+ // this is called from GetActiveTarget() and OnLog() when they're called
+ // from the main thread
+ static wxLog *GetMainThreadActiveTarget();
- // called from OnLog() if it's called from the main thread and from Flush()
+ // called from OnLog() if it's called from the main thread or if we have a
+ // (presumably MT-safe) thread-specific logger and by FlushThreadMessages()
// when it plays back the buffered messages logged from the other threads
- void OnLogInMainThread(wxLogLevel level,
- const wxString& msg,
- const wxLogRecordInfo& info);
+ void CallDoLogNow(wxLogLevel level,
+ const wxString& msg,
+ const wxLogRecordInfo& info);
+
+
+ // variables
+ // ----------------
+
+ wxLogFormatter *m_formatter; // We own this pointer.
// static variables
#if WXWIN_COMPATIBILITY_2_8
static wxTraceMask ms_ulTraceMask; // controls wxLogTrace behaviour
#endif // WXWIN_COMPATIBILITY_2_8
-
- // currently enabled trace masks
- static wxArrayString ms_aTraceMasks;
};
// ----------------------------------------------------------------------------
// indicates that we may have an extra first argument preceding the format
// string and that if we do have it, we should store it in m_info using the
// given key (while by default 0 value will be used)
- wxLogger& MaybeStore(const wxString& key)
+ wxLogger& MaybeStore(const wxString& key, wxUIntPtr value = 0)
{
wxASSERT_MSG( m_optKey.empty(), "can only have one optional value" );
m_optKey = key;
- m_info.StoreValue(key, 0);
+ m_info.StoreValue(key, value);
return *this;
}
LogV(format, argptr);
}
+ void LogVTrace(const wxString& mask, const wxString& format, va_list argptr)
+ {
+ if ( !wxLog::IsAllowedTraceMask(mask) )
+ return;
+
+ Store(wxLOG_KEY_TRACE_MASK, mask);
+
+ LogV(format, argptr);
+ }
+
// vararg functions used by wxLogXXX():
void DoCallOnLog(const wxString& format, va_list argptr)
{
- wxLog::OnLog(m_level, wxString::FormatV(format, argptr), m_info);
+ DoCallOnLog(m_level, format, argptr);
}
// following arguments are not even evaluated which is good as it avoids
// unnecessary overhead)
//
-// Note: the strange if/else construct is needed to make the following code
+// Note: the strange (because executing at most once) for() loop because we
+// must arrange for wxDO_LOG() to be at the end of the macro and using a
+// more natural "if (IsLevelEnabled()) wxDO_LOG()" would result in wrong
+// behaviour for the following code ("else" would bind to the wrong "if"):
//
// if ( cond )
// wxLogError("!!!");
// else
// ...
//
-// work as expected, without it the second "else" would match the "if"
-// inside wxLogError(). Unfortunately code like
-//
-// if ( cond )
-// wxLogError("!!!");
+// See also #11829 for the problems with other simpler approaches,
+// notably the need for two macros due to buggy __LINE__ in MSVC.
//
-// now provokes "suggest explicit braces to avoid ambiguous 'else'"
-// warnings from g++ 4.3 and later with -Wparentheses on but they can be
-// easily fixed by adding curly braces around wxLogError() and at least
-// the code still does do the right thing.
+// Note 2: Unfortunately we can't use the same solution for all compilers
+// because the loop-based one results in problems with MSVC6 due to its
+// wrong (pre-C++98) rules for the scope of the variables declared
+// inside the loop, as this prevents us from using wxLogXXX() in switch
+// statement clauses ("initialization of loopvar skipped by case"). So
+// for now, i.e. while we still support VC6, use the previous solution
+// for it (FIXME-VC6).
+#ifdef __VISUALC6__
#define wxDO_LOG_IF_ENABLED(level) \
if ( !wxLog::IsLevelEnabled(wxLOG_##level, wxLOG_COMPONENT) ) \
{} \
else \
wxDO_LOG(level)
+#else
+#define wxDO_LOG_IF_ENABLED_HELPER(level, loopvar) \
+ for ( bool loopvar = false; \
+ !loopvar && wxLog::IsLevelEnabled(wxLOG_##level, wxLOG_COMPONENT); \
+ loopvar = true ) \
+ wxDO_LOG(level)
+
+#define wxDO_LOG_IF_ENABLED(level) \
+ wxDO_LOG_IF_ENABLED_HELPER(level, wxMAKE_UNIQUE_NAME(wxlogcheck))
+#endif
// wxLogFatalError() is special as it can't be disabled
-#define wxLogFatalError wxDO_LOG(FatalError)
+#define wxLogFatalError wxDO_LOG(FatalError)
#define wxVLogFatalError(format, argptr) wxDO_LOGV(FatalError, format, argptr)
#define wxLogError wxDO_LOG_IF_ENABLED(Error)
// wxLogSysError() needs to stash the error code value in the log record info
// so it needs special handling too; additional complications arise because the
// error code may or not be present as the first argument
+//
+// notice that we unfortunately can't avoid the call to wxSysErrorCode() even
+// though it may be unneeded if an explicit error code is passed to us because
+// the message might not be logged immediately (e.g. it could be queued for
+// logging from the main thread later) and so we can't to wait until it is
+// logged to determine whether we have last error or not as it will be too late
+// and it will have changed already by then (in fact it even changes when
+// wxString::Format() is called because of vsnprintf() inside it so it can
+// change even much sooner)
#define wxLOG_KEY_SYS_ERROR_CODE "wx.sys_error"
#define wxLogSysError \
if ( !wxLog::IsLevelEnabled(wxLOG_Error, wxLOG_COMPONENT) ) \
{} \
else \
- wxMAKE_LOGGER(Error).MaybeStore(wxLOG_KEY_SYS_ERROR_CODE).Log
+ wxMAKE_LOGGER(Error).MaybeStore(wxLOG_KEY_SYS_ERROR_CODE, \
+ wxSysErrorCode()).Log
// unfortunately we can't have overloaded macros so we can't define versions
// both with and without error code argument and have to rely on LogV()
// overloads in wxLogger to select between them
#define wxVLogSysError \
- wxMAKE_LOGGER(Error).MaybeStore(wxLOG_KEY_SYS_ERROR_CODE).LogV
+ wxMAKE_LOGGER(Error).MaybeStore(wxLOG_KEY_SYS_ERROR_CODE, \
+ wxSysErrorCode()).LogV
#if wxUSE_GUI
// wxLogStatus() is similar to wxLogSysError() as it allows to optionally
else \
wxMAKE_LOGGER(Status).MaybeStore(wxLOG_KEY_FRAME).Log
- #define wxVLogStatus(format, argptr) \
+ #define wxVLogStatus \
wxMAKE_LOGGER(Status).MaybeStore(wxLOG_KEY_FRAME).LogV
#endif // wxUSE_GUI
// WX_WATCOM_ONLY_CODE is needed to work around
// http://bugzilla.openwatcom.org/show_bug.cgi?id=351
#define wxDEFINE_EMPTY_LOG_FUNCTION(level) \
- WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 1, (const wxString&)) \
+ WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 1, (const wxFormatString&)) \
WX_WATCOM_ONLY_CODE( \
WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 1, (const char*)) \
WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 1, (const wchar_t*)) \
WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 1, (const wxCStrData&)) \
) \
- inline void wxVLog##level(const wxString& WXUNUSED(format), \
+ inline void wxVLog##level(const wxFormatString& WXUNUSED(format), \
va_list WXUNUSED(argptr)) { } \
#define wxDEFINE_EMPTY_LOG_FUNCTION2(level, argclass) \
- WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 2, (argclass, const wxString&)) \
+ WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 2, (argclass, const wxFormatString&)) \
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&)) \
) \
inline void wxVLog##level(argclass WXUNUSED(arg), \
- const wxString& WXUNUSED(format), \
+ const wxFormatString& WXUNUSED(format), \
va_list WXUNUSED(argptr)) {}
wxDEFINE_EMPTY_LOG_FUNCTION(FatalError);
#ifdef HAVE_VARIADIC_MACROS
#define wxLogDebug(fmt, ...) wxLogNop()
#else // !HAVE_VARIADIC_MACROS
- WX_DEFINE_VARARG_FUNC_NOP(wxLogDebug, 1, (const wxString&))
+ WX_DEFINE_VARARG_FUNC_NOP(wxLogDebug, 1, (const wxFormatString&))
#endif
#endif // wxUSE_LOG_DEBUG/!wxUSE_LOG_DEBUG
{} \
else \
wxMAKE_LOGGER(Trace).LogTrace
+ #define wxVLogTrace \
+ if ( !wxLog::IsLevelEnabled(wxLOG_Trace, wxLOG_COMPONENT) ) \
+ {} \
+ else \
+ wxMAKE_LOGGER(Trace).LogVTrace
#else // !wxUSE_LOG_TRACE
#define wxVLogTrace(mask, fmt, valist) wxLogNop()
#define wxLogTrace(mask, fmt, ...) wxLogNop()
#else // !HAVE_VARIADIC_MACROS
#if WXWIN_COMPATIBILITY_2_8
- WX_DEFINE_VARARG_FUNC_NOP(wxLogTrace, 2, (wxTraceMask, const wxString&))
+ WX_DEFINE_VARARG_FUNC_NOP(wxLogTrace, 2, (wxTraceMask, const wxFormatString&))
#endif
- WX_DEFINE_VARARG_FUNC_NOP(wxLogTrace, 2, (const wxString&, const wxString&))
+ WX_DEFINE_VARARG_FUNC_NOP(wxLogTrace, 2, (const wxString&, const wxFormatString&))
#ifdef __WATCOMC__
// workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
WX_DEFINE_VARARG_FUNC_NOP(wxLogTrace, 2, (const char*, const char*))
#undef WX_WATCOM_ONLY_CODE
#endif
+// macro which disables debug logging in release builds: this is done by
+// default by wxIMPLEMENT_APP() so usually it doesn't need to be used explicitly
+#if defined(NDEBUG) && wxUSE_LOG_DEBUG
+ #define wxDISABLE_DEBUG_LOGGING_IN_RELEASE_BUILD() \
+ wxLog::SetLogLevel(wxLOG_Info)
+#else // !NDEBUG
+ #define wxDISABLE_DEBUG_LOGGING_IN_RELEASE_BUILD()
+#endif // NDEBUG/!NDEBUG
+
#endif // _WX_LOG_H_
projects / wxWidgets.git / blobdiff