#include "wx/msgout.h"
#include "wx/textfile.h"
#include "wx/thread.h"
+#include "wx/private/threadinfo.h"
#include "wx/crt.h"
+#include "wx/vector.h"
// other standard headers
#ifndef __WXWINCE__
#undef wxLOG_COMPONENT
const char *wxLOG_COMPONENT = "";
+// this macro allows to define an object which will be initialized before any
+// other function in this file is called: this is necessary to allow log
+// functions to be used during static initialization (this is not advisable
+// anyhow but we should at least try to not crash) and to also ensure that they
+// are initialized by the time static initialization is done, i.e. before any
+// threads are created hopefully
+//
+// the net effect of all this is that you can use Get##name() function to
+// access the object without worrying about it being not initialized
+//
+// see also WX_DEFINE_GLOBAL_CONV2() in src/common/strconv.cpp
+#define WX_DEFINE_GLOBAL_VAR(type, name) \
+ inline type& Get##name() \
+ { \
+ static type s_##name; \
+ return s_##name; \
+ } \
+ \
+ type *gs_##name##Ptr = &Get##name()
+
#if wxUSE_THREADS
-// define static functions providing access to the critical sections we use
-// instead of just using static critical section variables as log functions may
-// be used during static initialization and while this is certainly not
-// advisable it's still better to not crash (as we'd do if we used a yet
-// uninitialized critical section) if it happens
+wxTLS_TYPE(wxThreadSpecificInfo) wxThreadInfoVar;
-static inline wxCriticalSection& GetTraceMaskCS()
+namespace
{
- static wxCriticalSection s_csTrace;
- return s_csTrace;
-}
+// contains messages logged by the other threads and waiting to be shown until
+// Flush() is called in the main one
+typedef wxVector<wxLogRecord> wxLogRecords;
+wxLogRecords gs_bufferedLogRecords;
-static inline wxCriticalSection& GetPreviousLogCS()
-{
- static wxCriticalSection s_csPrev;
+#define WX_DEFINE_LOG_CS(name) WX_DEFINE_GLOBAL_VAR(wxCriticalSection, name##CS)
- return s_csPrev;
-}
+// this critical section is used for buffering the messages from threads other
+// than main, i.e. it protects all accesses to gs_bufferedLogRecords above
+WX_DEFINE_LOG_CS(BackgroundLog);
-static inline wxCriticalSection& GetLevelsCS()
-{
- static wxCriticalSection s_csLevels;
+// this one is used for protecting TraceMasks() from concurrent access
+WX_DEFINE_LOG_CS(TraceMask);
- return s_csLevels;
-}
+// and this one is used for GetComponentLevels()
+WX_DEFINE_LOG_CS(Levels);
+
+} // anonymous namespace
#endif // wxUSE_THREADS
// map containing all components for which log level was explicitly set
//
// NB: all accesses to it must be protected by GetLevelsCS() critical section
-wxStringToNumHashMap gs_componentLevels;
+WX_DEFINE_GLOBAL_VAR(wxStringToNumHashMap, ComponentLevels);
+
+// ----------------------------------------------------------------------------
+// wxLogOutputBest: wxLog wrapper around wxMessageOutputBest
+// ----------------------------------------------------------------------------
+
+class wxLogOutputBest : public wxLog
+{
+public:
+ wxLogOutputBest() { }
+
+protected:
+ virtual void DoLogText(const wxString& msg)
+ {
+ wxMessageOutputBest().Output(msg);
+ }
+
+private:
+ wxDECLARE_NO_COPY_CLASS(wxLogOutputBest);
+};
} // anonymous namespace
// ----------------------------------------------------------------------------
unsigned wxLog::LogLastRepeatIfNeeded()
-{
- wxCRIT_SECT_LOCKER(lock, GetPreviousLogCS());
-
- return LogLastRepeatIfNeededUnlocked();
-}
-
-unsigned wxLog::LogLastRepeatIfNeededUnlocked()
{
const unsigned count = gs_prevLog.numRepeated;
#endif
}
- wxLog *pLogger = GetActiveTarget();
- if ( !pLogger )
- return;
+ wxLog *logger;
- if ( GetRepetitionCounting() )
+#if wxUSE_THREADS
+ if ( !wxThread::IsMain() )
+ {
+ logger = wxThreadInfo.logger;
+ if ( !logger )
+ {
+ if ( ms_pLogger )
+ {
+ // buffer the messages until they can be shown from the main
+ // thread
+ wxCriticalSectionLocker lock(GetBackgroundLogCS());
+
+ gs_bufferedLogRecords.push_back(wxLogRecord(level, msg, info));
+
+ // ensure that our Flush() will be called soon
+ wxWakeUpIdle();
+ }
+ //else: we don't have any logger at all, there is no need to log
+ // anything
+
+ return;
+ }
+ //else: we have a thread-specific logger, we can send messages to it
+ // directly
+ }
+ else
+#endif // wxUSE_THREADS
{
- wxCRIT_SECT_LOCKER(lock, GetPreviousLogCS());
+ logger = GetMainThreadActiveTarget();
+ if ( !logger )
+ return;
+ }
+
+ logger->CallDoLogNow(level, msg, info);
+}
+void
+wxLog::CallDoLogNow(wxLogLevel level,
+ const wxString& msg,
+ const wxLogRecordInfo& info)
+{
+ if ( GetRepetitionCounting() )
+ {
if ( msg == gs_prevLog.msg )
{
gs_prevLog.numRepeated++;
return;
}
- pLogger->LogLastRepeatIfNeededUnlocked();
+ LogLastRepeatIfNeeded();
// reset repetition counter for a new message
gs_prevLog.msg = msg;
wxUIntPtr num = 0;
if ( info.GetNumValue(wxLOG_KEY_SYS_ERROR_CODE, &num) )
{
- long err = static_cast<long>(num);
- if ( !err )
- err = wxSysErrorCode();
+ const long err = static_cast<long>(num);
suffix.Printf(_(" (error %ld: %s)"), err, wxSysErrorMsg(err));
}
}
#endif // wxUSE_LOG_TRACE
- pLogger->DoLogRecord(level, prefix + msg + suffix, info);
+ DoLogRecord(level, prefix + msg + suffix, info);
}
void wxLog::DoLogRecord(wxLogLevel level,
// but to call both of them
DoLog(level, (const char*)msg.mb_str(), info.timestamp);
DoLog(level, (const wchar_t*)msg.wc_str(), info.timestamp);
-#endif // WXWIN_COMPATIBILITY_2_8
+#else // !WXWIN_COMPATIBILITY_2_8
+ wxUnusedVar(info);
+#endif // WXWIN_COMPATIBILITY_2_8/!WXWIN_COMPATIBILITY_2_8
// TODO: it would be better to extract message formatting in a separate
// ----------------------------------------------------------------------------
wxLog *wxLog::GetActiveTarget()
+{
+#if wxUSE_THREADS
+ if ( !wxThread::IsMain() )
+ {
+ // check if we have a thread-specific log target
+ wxLog * const logger = wxThreadInfo.logger;
+
+ // the code below should be only executed for the main thread as
+ // CreateLogTarget() is not meant for auto-creating log targets for
+ // worker threads so skip it in any case
+ return logger ? logger : ms_pLogger;
+ }
+#endif // wxUSE_THREADS
+
+ return GetMainThreadActiveTarget();
+}
+
+/* static */
+wxLog *wxLog::GetMainThreadActiveTarget()
{
if ( ms_bAutoCreate && ms_pLogger == NULL ) {
// prevent infinite recursion if someone calls wxLogXXX() from
if ( wxTheApp != NULL )
ms_pLogger = wxTheApp->GetTraits()->CreateLogTarget();
else
- ms_pLogger = new wxLogStderr;
+ ms_pLogger = new wxLogOutputBest;
s_bInGetActiveTarget = false;
return pOldLogger;
}
+#if wxUSE_THREADS
+/* static */
+wxLog *wxLog::SetThreadActiveTarget(wxLog *logger)
+{
+ wxASSERT_MSG( !wxThread::IsMain(), "use SetActiveTarget() for main thread" );
+
+ wxLog * const oldLogger = wxThreadInfo.logger;
+ if ( oldLogger )
+ oldLogger->Flush();
+
+ wxThreadInfo.logger = logger;
+
+ return oldLogger;
+}
+#endif // wxUSE_THREADS
+
void wxLog::DontCreateOnDemand()
{
ms_bAutoCreate = false;
{
wxCRIT_SECT_LOCKER(lock, GetLevelsCS());
- gs_componentLevels[component] = level;
+ GetComponentLevels()[component] = level;
}
}
{
wxCRIT_SECT_LOCKER(lock, GetLevelsCS());
+ const wxStringToNumHashMap& componentLevels = GetComponentLevels();
while ( !component.empty() )
{
wxStringToNumHashMap::const_iterator
- it = gs_componentLevels.find(component);
- if ( it != gs_componentLevels.end() )
+ it = componentLevels.find(component);
+ if ( it != componentLevels.end() )
return static_cast<wxLogLevel>(it->second);
component = component.BeforeLast('/');
// wxLog trace masks
// ----------------------------------------------------------------------------
+namespace
+{
+
+// because IsAllowedTraceMask() may be called during static initialization
+// (this is not recommended but it may still happen, see #11592) we can't use a
+// simple static variable which might be not initialized itself just yet to
+// store the trace masks, but need this accessor function which will ensure
+// that the variable is always correctly initialized before being accessed
+//
+// notice that this doesn't make accessing it MT-safe, of course, you need to
+// serialize accesses to it using GetTraceMaskCS() for this
+wxArrayString& TraceMasks()
+{
+ static wxArrayString s_traceMasks;
+
+ return s_traceMasks;
+}
+
+} // anonymous namespace
+
+/* static */ const wxArrayString& wxLog::GetTraceMasks()
+{
+ // because of this function signature (it returns a reference, not the
+ // object), it is inherently MT-unsafe so there is no need to acquire the
+ // lock here anyhow
+
+ return TraceMasks();
+}
+
void wxLog::AddTraceMask(const wxString& str)
{
wxCRIT_SECT_LOCKER(lock, GetTraceMaskCS());
- ms_aTraceMasks.push_back(str);
+ TraceMasks().push_back(str);
}
void wxLog::RemoveTraceMask(const wxString& str)
{
wxCRIT_SECT_LOCKER(lock, GetTraceMaskCS());
- int index = ms_aTraceMasks.Index(str);
+ int index = TraceMasks().Index(str);
if ( index != wxNOT_FOUND )
- ms_aTraceMasks.RemoveAt((size_t)index);
+ TraceMasks().RemoveAt((size_t)index);
}
void wxLog::ClearTraceMasks()
{
wxCRIT_SECT_LOCKER(lock, GetTraceMaskCS());
- ms_aTraceMasks.Clear();
+ TraceMasks().Clear();
}
/*static*/ bool wxLog::IsAllowedTraceMask(const wxString& mask)
{
wxCRIT_SECT_LOCKER(lock, GetTraceMaskCS());
- for ( wxArrayString::iterator it = ms_aTraceMasks.begin(),
- en = ms_aTraceMasks.end();
- it != en; ++it )
+ const wxArrayString& masks = GetTraceMasks();
+ for ( wxArrayString::const_iterator it = masks.begin(),
+ en = masks.end();
+ it != en;
+ ++it )
{
if ( *it == mask)
return true;
#endif // wxUSE_DATETIME
}
+#if wxUSE_THREADS
+
+void wxLog::FlushThreadMessages()
+{
+ // check if we have queued messages from other threads
+ wxLogRecords bufferedLogRecords;
+
+ {
+ wxCriticalSectionLocker lock(GetBackgroundLogCS());
+ bufferedLogRecords.swap(gs_bufferedLogRecords);
+
+ // release the lock now to not keep it while we are logging the
+ // messages below, allowing background threads to run
+ }
+
+ if ( !bufferedLogRecords.empty() )
+ {
+ for ( wxLogRecords::const_iterator it = bufferedLogRecords.begin();
+ it != bufferedLogRecords.end();
+ ++it )
+ {
+ CallDoLogNow(it->level, it->msg, it->info);
+ }
+ }
+}
+
+/* static */
+bool wxLog::IsThreadLoggingEnabled()
+{
+ return !wxThreadInfo.loggingDisabled;
+}
+
+/* static */
+bool wxLog::EnableThreadLogging(bool enable)
+{
+ const bool wasEnabled = !wxThreadInfo.loggingDisabled;
+ wxThreadInfo.loggingDisabled = !enable;
+ return wasEnabled;
+}
+
+#endif // wxUSE_THREADS
+
void wxLog::Flush()
{
LogLastRepeatIfNeeded();
}
+/* static */
+void wxLog::FlushActive()
+{
+ if ( ms_suspendCount )
+ return;
+
+ wxLog * const log = GetActiveTarget();
+ if ( log )
+ {
+#if wxUSE_THREADS
+ if ( wxThread::IsMain() )
+ log->FlushThreadMessages();
+#endif // wxUSE_THREADS
+
+ log->Flush();
+ }
+}
+
// ----------------------------------------------------------------------------
// wxLogBuffer implementation
// ----------------------------------------------------------------------------
void wxLogBuffer::Flush()
{
+ wxLog::Flush();
+
if ( !m_str.empty() )
{
wxMessageOutputBest out;
wxLogChain::~wxLogChain()
{
- delete m_logOld;
+ wxLog::SetActiveTarget(m_logOld);
if ( m_logNew != this )
delete m_logNew;
m_logOld->LogRecord(level, msg, info);
// and also send it to the new one
- if ( m_logNew && m_logNew != this )
- m_logNew->LogRecord(level, msg, info);
+ if ( m_logNew )
+ {
+ // don't call m_logNew->LogRecord() to avoid infinite recursion when
+ // m_logNew is this object itself
+ if ( m_logNew != this )
+ m_logNew->LogRecord(level, msg, info);
+ else
+ wxLog::DoLogRecord(level, msg, info);
+ }
}
#ifdef __VISUALC__
wxTraceMask wxLog::ms_ulTraceMask = (wxTraceMask)0;
#endif // wxDEBUG_LEVEL
-wxArrayString wxLog::ms_aTraceMasks;
-
// ----------------------------------------------------------------------------
// stdout error logging helper
// ----------------------------------------------------------------------------
projects / wxWidgets.git / blobdiff