source: trunk/Mars/mbase/MLog.cc@ 14079

Last change on this file since 14079 was 14079, checked in by tbretz, 9 years ago
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1/* ======================================================================== *\
2!
3! *
4! * This file is part of MARS, the MAGIC Analysis and Reconstruction
5! * Software. It is distributed to you in the hope that it can be a useful
6! * and timesaving tool in analysing Data of imaging Cerenkov telescopes.
7! * It is distributed WITHOUT ANY WARRANTY.
8! *
9! * Permission to use, copy, modify and distribute this software and its
10! * documentation for any purpose is hereby granted without fee,
11! * provided that the above copyright notice appear in all copies and
12! * that both that copyright notice and this permission notice appear
13! * in supporting documentation. It is provided "as is" without express
14! * or implied warranty.
15! *
16!
17!
18! Author(s): Thomas Bretz, 12/2000 <mailto:tbretz@astro.uni-wuerzburg.de>
19!
20! Copyright: MAGIC Software Development, 2000-2006
21!
22!
23\* ======================================================================== */
24
25//////////////////////////////////////////////////////////////////////////////
26//
27// MLog
28//
29// This is what we call the logging-system.
30//
31// It is derived from the C++ streaming classes and can handle our
32// logging. The log output can be redirected to stdout, stderr, any other
33// stream or a root window.
34//
35// There is a global log-instance which you can use like cout, id is gLog.
36// A log-instance of your choice (gLog by default) is destributed to all
37// Task which are used in an eventloop, so that you can redirect the output
38// of one eventloop to where you want..
39//
40// The MLog stream has the advantage, that it can be used like the common
41// C++ streams (for example cout). It can redirect the stream to different
42// outputs (console, file, GUI) if necessary at the same time.
43//
44// It supports different debug levels. The debug level of the current
45// stream contents is set by SetDebugLevel, the output level of the
46// current stream can be set by SetOutputLevel.
47//
48// The header file MLogManip.h contains so called manipulators (like flush
49// or setw from iomanip.h) which can manipulate these levels from within
50// stream, for example:
51// gLog << debug(3) << "Hallo World " << endl;
52// sets the debug level of the following stream to 3
53//
54// edev(), ddev() can be used to enable/disable an output device from
55// within the stream. The enumerations are defined in MLog::_flags
56//
57// Commonly used abbreviations are also defined:
58// dbginf Prints source file name and line number. Used for output
59// which people may like to look up in the code
60// all Is streamed to the output in any case. Used for outputs
61// which are requested by the user (eg TObject::Print)
62// err Should be used for fatal errors which stops the current
63// processing, eg:
64// gLog << err << "ERROR: TObject::Copy - Stopped" << endl;
65// warn Warning means an error occured, but it is not clear whether
66// this results further procesing or not.
67// inf Informs the user about what's going on. Mostly usefull for
68// debugging, but in general not necessary at all.
69// dbg Use this for your private purpose to mark something as debug
70// output. This is _not_ ment to be persistent!
71//
72// If your console is capable of ANSI colors the stream is displayed
73// in several colors:
74// all: default
75// err: red
76// warn: yellow/brown
77// inf: green
78// dbg: blue (and all other levels)
79//
80// If you have a dark background on your console you might want to set
81// an environment variable, eg:
82// export MARSDEFINES=-DHAVE_DARKBACKGROUND
83// and recompile MLog.
84//
85// If your console can display it also 'underline' can be used. This
86// underlines a text till the next 'endl', eg:
87// gLog << underline << "This is important!" << endl;
88//
89// To switch off ANSI support call: SetNoColors()
90//
91// gLog is a global stream defined like cout or cerr
92//
93//////////////////////////////////////////////////////////////////////////////
94#include "MLog.h"
95
96#include <stdlib.h> // mkstemp
97
98#include <fstream>
99#include <iomanip>
100
101#include <TROOT.h> // gROOT->GetListOfCleanups()
102#include <TSystem.h>
103
104#ifdef _REENTRANT
105#include <TMutex.h>
106#endif
107#include <TGTextView.h>
108
109#include <TEnv.h> // gEnv (ErrorHandler)
110#include <TError.h> // TError (SetErrorHandler)
111
112#include "MArgs.h"
113#include "MTime.h"
114#include "MString.h"
115#include "MParContainer.h"
116
117#include "MLogHtml.h"
118#include "MLogManip.h" // inf,warn,err (MLog::ErrorHandler)
119
120ClassImp(MLog);
121
122using namespace std;
123
124#undef DEBUG
125//#define DEBUG
126
127
128// root 3.02:
129// check for TObjectWarning, TObject::Info, gErrorIgnoreLevel
130
131const char MLog::kESC = '\033'; // (char)27
132const char *const MLog::kEsc = "\033[";
133const char *const MLog::kReset = "\033[0m";
134const char *const MLog::kRed = "\033[31m";
135const char *const MLog::kGreen = "\033[32m";
136#ifdef HAVE_DARKBACKGROUND
137const char *const MLog::kYellow = "\033[33m\033[1m";
138#else
139const char *const MLog::kYellow = "\033[33m";
140#endif
141const char *const MLog::kBlue = "\033[34m";
142const char *const MLog::kUnderline = "\033[4m";
143const char *const MLog::kBlink = "\033[5m";
144const char *const MLog::kBright = "\033[1m";
145const char *const MLog::kDark = "\033[2m";
146
147//
148// This is the definition of the global log facility
149//
150MLog gLog;
151
152// --------------------------------------------------------------------------
153//
154// this strange usage of an unbufferd buffer is a workaround
155// to make it work on Alpha and Linux!
156//
157void MLog::Init()
158{
159 //
160 // Creat drawing semaphore
161 //
162#ifdef _REENTRANT
163 fMuxGui = new TMutex;
164 fMuxStream = new TMutex;
165#endif
166
167 fPlugins = new TList;
168 gROOT->GetListOfCleanups()->Add(fPlugins);
169 fPlugins->SetBit(kMustCleanup);
170
171 setp(&fBuffer, &fBuffer+1);
172 *this << '\0';
173}
174
175// --------------------------------------------------------------------------
176//
177// default constructor which initializes the streamer and sets the device
178// which is used for the output (i)
179//
180MLog::MLog(int i) : ostream(this), fPPtr(fBase), fEPtr(fBase+fgBufferSize), fOutputLevel(0), fDebugLevel((unsigned)-1), fDevice(i), fIsNull(kFALSE), fOut(NULL), fOutAllocated(kFALSE), fGui(NULL), fNumLines(0)
181{
182 Init();
183}
184
185// --------------------------------------------------------------------------
186//
187// default constructor which initializes the streamer and sets the given
188// ofstream as the default output device
189//
190MLog::MLog(ofstream &sout) : ostream(this), fPPtr(fBase), fEPtr(fBase+fgBufferSize), fOutputLevel(0), fDebugLevel((unsigned)-1), fDevice(eFile), fIsNull(kFALSE), fOut(&sout), fOutAllocated(kFALSE), fGui(NULL), fNumLines(0)
191{
192 Init();
193}
194
195// --------------------------------------------------------------------------
196//
197// default constructor which initializes the streamer and sets the given
198// TGTextView as the default output device
199//
200MLog::MLog(TGTextView &sout) : ostream(this), fPPtr(fBase), fEPtr(fBase+fgBufferSize), fOutputLevel(0), fDebugLevel((unsigned)-1), fDevice(eGui), fOut(NULL), fOutAllocated(kFALSE), fGui(&sout), fNumLines(0)
201{
202 Init();
203}
204
205// --------------------------------------------------------------------------
206//
207// default constructor which initializes the streamer and opens a file with
208// the given name. Dependend on the flag the file is set as output device
209// or not.
210//
211MLog::MLog(const char *fname, int flag) : ostream(this), fPPtr(fBase), fEPtr(fBase+fgBufferSize), fOutputLevel(0), fDebugLevel((unsigned)-1), fDevice(eFile), fIsNull(kFALSE), fGui(NULL), fNumLines(0)
212{
213 Init();
214
215 AllocateFile(fname);
216 CheckFlag(eFile, flag);
217}
218
219// --------------------------------------------------------------------------
220//
221// Destructor, destroying the gui mutex.
222//
223MLog::~MLog()
224{
225 DeallocateFile();
226
227#ifdef DEBUG
228 TIter Next(fPlugins);
229 TObject *o=0;
230 while ((o=Next()))
231 {
232 cout << "Delete: " << o->GetName() << std::flush;
233 cout << " [" << o->ClassName() << "]" << endl;
234 delete o;
235 }
236
237 cout << "Delete: fPlugins " << fPlugins << "..." << std::flush;
238#endif
239
240 delete fPlugins;
241#ifdef DEBUG
242 cout << "done." << endl;
243#endif
244
245#ifdef _REENTRANT
246 delete fMuxStream;
247 delete fMuxGui;
248#endif
249}
250
251// --------------------------------------------------------------------------
252//
253// copyt constructor
254//
255/*
256MLog::MLog(MLog const& log)
257{
258// fOutputLevel = log.fOutputLevel;
259// fDebugLevel = log.fDebugLevel;
260// fDevice = log.fDevice;
261}
262*/
263
264void MLog::Underline()
265{
266 if (fIsNull)
267 return;
268
269 SetBit(kIsUnderlined);
270
271 fPlugins->R__FOR_EACH(MLogPlugin, Underline)();
272
273 if (TestBit(eNoColors))
274 return;
275
276 if (fDevice&eStdout)
277 cout << kUnderline;
278
279 if (fDevice&eStderr)
280 cerr << kUnderline;
281}
282
283void MLog::Output(ostream &sout, int len)
284{
285 if (!TestBit(eNoColors))
286 switch (fOutputLevel)
287 {
288 // do not output reset. Otherwise we reset underline in 0-mode
289 // case 1: out << MLog::kReset; break; // all
290 case 0: break; // all = background color
291 case 1: sout << MLog::kRed; break; // err
292 case 2: sout << MLog::kYellow; break; // warn
293 case 3: // inf
294 case 4: // inf2
295 case 5: sout << MLog::kGreen; break; // inf3
296 default: sout << MLog::kBlue; break; // all others (dbg)
297 }
298
299 if (len>0)
300 {
301 // Check for EOL
302 const Int_t endline = fBase[len-1]=='\n' ? 1 : 0;
303 // output text to screen (without trailing '\n')
304 sout << TString(fBase, len-endline);
305 // reset colors if working with colors
306 if (!TestBit(eNoColors))
307 sout << kReset;
308 // output EOL of check found EOL
309 if (endline)
310 {
311 sout << '\n';
312 // Check whether text was underlined
313 if (TestBit(kIsUnderlined) && TestBit(eNoColors))
314 {
315 sout << setw(len-1) << setfill('-') << "" << "\n";
316 ResetBit(kIsUnderlined);
317 }
318 }
319 }
320 sout.flush();
321}
322
323void MLog::AddGuiLine(const TString &line)
324{
325 // add a new TString* to the array of gui lines
326 TString **newstr = new TString*[fNumLines+1];
327 memcpy(newstr, fGuiLines, fNumLines*sizeof(TString*));
328 if (fNumLines>0)
329 delete [] fGuiLines;
330 fGuiLines = newstr;
331
332 // add Gui line as last line of array
333 fGuiLines[fNumLines++] = new TString(line);
334}
335
336// --------------------------------------------------------------------------
337//
338// This is the function which writes the stream physically to a device.
339// If you want to add a new device this must be done here.
340//
341void MLog::WriteBuffer()
342{
343 //
344 // restart writing to the buffer at its first char
345 //
346 const int len = fPPtr - fBase;
347
348 fPPtr = fBase;
349
350 if (fIsNull)
351 return;
352
353 if (fDevice&eStdout)
354 Output(cout, len);
355
356 if (fDevice&eStderr)
357 Output(cerr, len);
358
359 if (fDevice&eFile && fOut)
360 fOut->write(fBase, len);
361
362 fPlugins->R__FOR_EACH(MLogPlugin, SetColor)(fOutputLevel);
363 fPlugins->R__FOR_EACH(MLogPlugin, WriteBuffer)(fBase, len);
364
365 if (fDevice&eGui && fGui)
366 {
367 // check whether the current text was flushed or endl'ed
368 const Int_t endline = fBase[len-1]=='\n' ? 1 : 0;
369
370 // for the gui remove trailing characters ('\n' or '\0')
371 fBase[len-endline]='\0';
372
373 // add new text to line storage
374 fGuiLine += fBase;
375
376 if (endline)
377 {
378 AddGuiLine(fGuiLine);
379 fGuiLine = "";
380
381 // Check whether text should be underlined
382 if (endline && TestBit(kIsUnderlined))
383 {
384 AddGuiLine("");
385 fGuiLines[fNumLines-1]->Append('-', fGuiLines[fNumLines-2]->Length());
386 ResetBit(kIsUnderlined);
387 }
388 }
389 }
390}
391
392void MLog::UpdateGui()
393{
394 if (fNumLines==0)
395 return;
396
397 // lock mutex
398 if (!LockUpdate("UpdateGui"))
399 {
400 Warning("UpdateGui", "Execution skipped");
401 return;
402 }
403
404 TGText &txt=*fGui->GetText();
405
406 // copy lines to TGListBox
407 for (int i=0; i<fNumLines; i++)
408 {
409 // Replace all tabs by 7 white spaces
410 fGuiLines[i]->ReplaceAll("\t", " ");
411 txt.InsText(TGLongPosition(0, txt.RowCount()), *fGuiLines[i]);
412 delete fGuiLines[i];
413 }
414 delete [] fGuiLines;
415
416 fNumLines=0;
417
418 // cut text box top 1000 lines
419 // while (txt.RowCount()>1000)
420 // txt.DelLine(1);
421
422 // show last entry
423 fGui->Layout();
424 fGui->SetVsbPosition(txt.RowCount()-1);
425
426 // tell a main loop, that list box contents have changed
427 fGui->SetBit(kHasChanged);
428
429 // release mutex
430 UnLockUpdate("UpdateGui");
431}
432
433bool MLog::LockUpdate(const char *msg)
434{
435#ifdef _REENTRANT
436 if (fMuxGui->Lock()==13)
437 {
438 Info("LockUpdate", "%s - mutex is already locked by this thread\n", msg);
439 return false;
440 }
441#endif
442 return true;
443}
444
445bool MLog::UnLockUpdate(const char *msg)
446{
447#ifdef _REENTRANT
448 if (fMuxGui->UnLock()==13)
449 {
450 Info("UnLockUpdate", "%s - tried to unlock mutex locked by other thread\n", msg);
451 return false;
452 }
453#endif
454 return true;
455}
456
457bool MLog::Lock(const char *msg)
458{
459#ifdef _REENTRANT
460 if (fMuxStream->Lock()==13)
461 {
462 Error("Lock", "%s - mutex is already locked by this thread\n", msg);
463 return false;
464 }
465// while (fMuxStream->Lock()==13)
466// usleep(1);
467// {
468// Error("Lock", "%s - mutex is already locked by this thread\n", msg);
469// return false;
470// }
471#endif
472 return true;
473}
474
475bool MLog::UnLock(const char *msg)
476{
477#ifdef _REENTRANT
478 if (fMuxStream->UnLock()==13)
479 {
480 Error("UnLock", "%s - tried to unlock mutex locked by other thread\n", msg);
481 return false;
482 }
483#endif
484 return true;
485}
486
487// --------------------------------------------------------------------------
488//
489// This is called to flush the buffer of the streaming devices
490//
491int MLog::sync()
492{
493 if (!LockUpdate("sync"))
494 usleep(1);
495 WriteBuffer();
496 UnLockUpdate("sync");
497
498 if (fDevice&eStdout)
499 {
500 if (!fIsNull && !TestBit(eNoColors))
501 cout << kReset;
502 cout.flush();
503 }
504
505 if (fDevice&eStderr)
506 cerr.flush();
507
508 if (fDevice&eFile && fOut)
509 fOut->flush();
510
511 return 0;
512}
513
514// --------------------------------------------------------------------------
515//
516// This function comes from streambuf and should
517// output the buffer to the device (flush, endl)
518// or handle a buffer overflow (too many chars)
519// If a real overflow happens i contains the next
520// chars which doesn't fit into the buffer anymore.
521// If the buffer is not really filled i is EOF(-1).
522//
523int MLog::overflow(int i) // i=EOF means not a real overflow
524{
525 //
526 // no output if
527 //
528 if (fOutputLevel <= fDebugLevel)
529 {
530 if (!LockUpdate("overflow"))
531 usleep(1);
532
533 *fPPtr++ = (char)i;
534
535 if (fPPtr == fEPtr)
536 WriteBuffer();
537
538 UnLockUpdate("overflow");
539 }
540
541 return 0;
542}
543
544// --------------------------------------------------------------------------
545//
546// Print usage information setup in Setup()
547//
548void MLog::Usage()
549{
550 // 1 2 3 4 5 6 7 8
551 // 12345678901234567890123456789012345678901234567890123456789012345678901234567890
552 *this << " -v# Verbosity level # [default=2]" << endl;
553 *this << " -a, --no-colors Do not use Ansii color codes" << endl;
554 *this << " --log[=file] Write log-out to ascii-file [default: prgname.log]" << endl;
555 *this << " --html[=file] Write log-out to html-file [default: prgname.html]" << endl;
556 *this << " --debug[=n] Enable root debugging [default: gDebug=1]" << endl;
557 *this << " --null Null output (supresses all output)" << endl;
558}
559
560// --------------------------------------------------------------------------
561//
562// Setup MLog and global debug output from command line arguments.
563//
564void MLog::Setup(MArgs &arg)
565{
566 // FXIME: This is not really at a place where it belongs to!
567 gDebug = arg.HasOption("--debug=") ? arg.GetIntAndRemove("--debug=") : 0;
568 if (gDebug==0 && arg.HasOnlyAndRemove("--debug"))
569 gDebug=1;
570
571 TString f1 = arg.GetStringAndRemove("--log=", "");
572 if (f1.IsNull() && arg.HasOnlyAndRemove("--log"))
573 f1 = MString::Format("%s.log", arg.GetName());
574 if (!f1.IsNull())
575 {
576 SetOutputFile(f1);
577 EnableOutputDevice(eFile);
578 }
579
580 TString f2 = arg.GetStringAndRemove("--html=", "");
581 if (f2.IsNull() && arg.HasOnlyAndRemove("--html"))
582 f2 = MString::Format("%s.html", arg.GetName());
583 if (!f2.IsNull())
584 {
585 MLogHtml *html = new MLogHtml(f2);
586 html->SetBit(kCanDelete);
587 AddPlugin(html);
588 }
589
590 const Bool_t null = arg.HasOnlyAndRemove("--null");
591 if (null)
592 SetNullOutput();
593
594 if (arg.HasOnlyAndRemove("--no-colors") || arg.HasOnlyAndRemove("-a"))
595 SetNoColors();
596
597 SetDebugLevel(arg.GetIntAndRemove("-v", 2));
598}
599
600// --------------------------------------------------------------------------
601//
602// Read the setup from a TEnv:
603// MLog.VerbosityLevel: 0, 1, 2, 3, 4
604// MLog.DebugLevel: 0, 1, 2, 3, 4
605// MLog.NoColors
606//
607// Depending on your setup it might be correct to use something like:
608// Job1.MLog.VerbosityLevel: 1
609// Job1.DebugLevel: 2
610// Job1.MLog.NoColors
611//
612void MLog::ReadEnv(const TEnv &env, TString prefix, Bool_t print)
613{
614 MParContainer mlog("MLog");
615
616 if (mlog.IsEnvDefined(env, prefix+"MLog", "VerbosityLevel", print))
617 SetDebugLevel(mlog.GetEnvValue(env, prefix+"MLog", "VerbosityLevel", 2));
618 else
619 if (mlog.IsEnvDefined(env, "MLog", "VerbosityLevel", print))
620 SetDebugLevel(mlog.GetEnvValue(env, "MLog", "VerbosityLevel", 2));
621
622 if (mlog.IsEnvDefined(env, prefix+"MLog", "DebugLevel", print))
623 gDebug = mlog.GetEnvValue(env, prefix+"MLog", "DebugLevel", 0);
624 else
625 if (mlog.IsEnvDefined(env, "MLog", "DebugLevel", print))
626 gDebug = mlog.GetEnvValue(env, "MLog", "DebugLevel", 0);
627
628 if (mlog.IsEnvDefined(env, prefix+"MLog", "NoColors", print))
629 SetNoColors(mlog.GetEnvValue(env, prefix+"MLog", "NoColors", kFALSE));
630 else
631 if (mlog.IsEnvDefined(env, "MLog", "NoColors", print))
632 SetNoColors(mlog.GetEnvValue(env, "MLog", "NoColors", kFALSE));
633}
634
635// --------------------------------------------------------------------------
636//
637// Read the setup from a TEnv:
638// MLog.VerbosityLevel: 0, 1, 2, 3, 4
639// MLog.DebugLevel: 0, 1, 2, 3, 4
640// MLog.NoColors
641//
642// Depending on your setup it might be correct to use something like:
643// Job1.MLog.VerbosityLevel: 1
644// Job1.DebugLevel: 2
645// Job1.MLog.NoColors
646//
647void MLog::WriteEnv(TEnv &, TString prefix, Bool_t) const
648{
649 if (!prefix.IsNull())
650 prefix += ".";
651 prefix += "MLog";
652
653 cout << "MLog::WriteEnv: not yet implemented!" << endl;
654}
655
656// --------------------------------------------------------------------------
657//
658// Create a new instance of an file output stream
659// an set the corresponding flag
660//
661void MLog::AllocateFile(const char *fname)
662{
663 // gcc 3.2:
664 const char *txt = "logXXXXXX";
665
666 TString n(fname ? fname : txt);
667 gSystem->ExpandPathName(n);
668
669 fOut = new ofstream(n.Data());
670
671 // switch off buffering
672 fOut->rdbuf()->pubsetbuf(0,0);
673
674 fOutAllocated = kTRUE;
675}
676
677// --------------------------------------------------------------------------
678//
679// if fout was allocated by this instance of MLooging
680// delete it.
681//
682void MLog::DeallocateFile()
683{
684 if (fOutAllocated)
685 delete fOut;
686}
687
688// --------------------------------------------------------------------------
689//
690// if necessary delete the old in stance of the file
691// output stream and create a new one
692//
693void MLog::ReallocateFile(const char *fname)
694{
695 DeallocateFile();
696 AllocateFile(fname);
697}
698
699// --------------------------------------------------------------------------
700//
701// This function checks if a device should get enabled or disabled.
702//
703void MLog::CheckFlag(Flags_t chk, int flag)
704{
705 if (flag==-1)
706 return;
707
708 flag ? EnableOutputDevice(chk) : DisableOutputDevice(chk);
709}
710
711// --------------------------------------------------------------------------
712//
713// Add a plugin to which the output should be redirected, eg. MLogHtml
714// The user has to take care of its deletion. If the plugin is deleted
715// (and the kMustCleanup bit was not reset accidentaly) the plugin
716// is automatically removed from the list of active plugins.
717//
718// If MLog should take the ownership call plug->SetBit(kCanDelete);
719//
720void MLog::AddPlugin(MLogPlugin *plug)
721{
722 fPlugins->Add(plug);
723
724 // Make sure that it is recursively deleted from all objects in ListOfCleanups
725 plug->SetBit(kMustCleanup);
726}
727
728// --------------------------------------------------------------------------
729//
730// Returns "yyyy-mm-dd user@host gROOT->GetName()[pid]"
731//
732TString MLog::Intro()
733{
734 UserGroup_t *user = gSystem->GetUserInfo();
735
736 TString rc;
737 rc += MTime(-1).GetSqlDateTime();
738 rc += " ";
739 rc += user->fUser;
740 rc += "@";
741 rc += gSystem->HostName();
742 rc += " ";
743 rc += gROOT->GetName();
744 rc += "[";
745 rc += gSystem->GetPid();
746 rc += "] ";
747
748 delete user;
749
750 return rc;
751}
752
753// --------------------------------------------------------------------------
754//
755// Check whether errors at this level should be ignored.
756//
757bool MLog::ErrorHandlerIgnore(Int_t level)
758{
759 // The default error handler function. It prints the message on stderr and
760 // if abort is set it aborts the application.
761 if (gErrorIgnoreLevel == kUnset) {
762 R__LOCKGUARD2(gErrorMutex);
763
764 gErrorIgnoreLevel = 0;
765 if (gEnv) {
766 TString lvl = gEnv->GetValue("Root.ErrorIgnoreLevel", "Info");
767 if (!lvl.CompareTo("Info",TString::kIgnoreCase))
768 gErrorIgnoreLevel = kInfo;
769 else if (!lvl.CompareTo("Warning",TString::kIgnoreCase))
770 gErrorIgnoreLevel = kWarning;
771 else if (!lvl.CompareTo("Error",TString::kIgnoreCase))
772 gErrorIgnoreLevel = kError;
773 else if (!lvl.CompareTo("Break",TString::kIgnoreCase))
774 gErrorIgnoreLevel = kBreak;
775 else if (!lvl.CompareTo("SysError",TString::kIgnoreCase))
776 gErrorIgnoreLevel = kSysError;
777 else if (!lvl.CompareTo("Fatal",TString::kIgnoreCase))
778 gErrorIgnoreLevel = kFatal;
779 }
780 }
781
782 return level < gErrorIgnoreLevel;
783}
784
785// --------------------------------------------------------------------------
786//
787// Output the root error message to the log-stream.
788//
789void MLog::ErrorHandlerPrint(Int_t level, const char *location, const char *msg)
790{
791 R__LOCKGUARD2(gErrorMutex);
792
793 if (level >= kError)
794 gLog << "ROOT:Error";
795 else
796 if (level >= kSysError)
797 gLog << "SysError";
798 else
799 if (level >= kBreak)
800 gLog << "\n *** Break ***";
801 else
802 if (level >= kFatal)
803 gLog << "Fatal";
804 else
805 if (level >= kWarning)
806 gLog << "ROOT:Warning";
807 else
808 if (level >= kInfo)
809 gLog << "ROOT:Info";
810
811 if (level >= kBreak && level < kSysError)
812 gLog << ": " << msg << std::endl;
813 else
814 if (location==0 || location[0]==0)
815 gLog << ": " << msg << std::endl;
816 else
817 gLog << " in <" << location << ">: " << msg << std::endl;
818}
819
820// --------------------------------------------------------------------------
821//
822// A new error handler using gLog instead of stderr as output.
823// It is mainly a copy of root's DefaultErrorHandler
824// (see TError.h and TError.cxx)
825//
826void MLog::ErrorHandlerCol(Int_t level, Bool_t abort, const char *location, const char *msg)
827{
828 if (ErrorHandlerIgnore(level))
829 return;
830
831 // This is a really stupid hack/workaround to suppress these
832 // annoying errors in case of a log-scale set too early
833 if (level==kError && !strcmp(location, "THistPainter::PaintInit"))
834 level=kInfo+2;
835
836 // This is a really stupid hack/workaround to suppress these
837 // annoying errors in case of 0 number of points
838 if (level==kError && !strcmp(location, "TGraphPainter::PaintGraph"))
839 level=kInfo+2;
840
841 // This is a really stupid hack/workaround to suppress these
842 // annoying errors in case of 0 number of points
843 if (level==kWarning && !strcmp(location, "Fit"))
844 level=kInfo+2;
845
846 gLog << std::flush;
847
848 const Int_t store = gLog.GetOutputLevel();
849
850 if (level >= kInfo)
851 gLog << inf;
852 if (level==kInfo+1)
853 gLog << inf2;
854 if (level==kInfo+2)
855 gLog << inf3;
856 if (level >= kWarning)
857 gLog << warn;
858 if (level >= kError)
859 gLog << err;
860
861 ErrorHandlerPrint(level, location, msg);
862
863 gLog << std::flush;
864
865 gLog.SetOutputLevel(store);
866 if (!abort)
867 return;
868
869 gLog << err << "aborting" << std::endl;
870 if (gSystem) {
871 gSystem->StackTrace();
872 gLog.SetOutputLevel(store);
873 gSystem->Abort();
874 }
875 else
876 {
877 gLog.SetOutputLevel(store);
878 ::abort();
879 }
880}
881
882// --------------------------------------------------------------------------
883//
884// A new error handler using gLog instead of stderr as output.
885// It is mainly a copy of root's DefaultErrorHandler
886// (see TError.h and TError.cxx)
887//
888void MLog::ErrorHandlerAll(Int_t level, Bool_t abort, const char *location, const char *msg)
889{
890 if (ErrorHandlerIgnore(level))
891 return;
892
893 gLog << std::flush << all;
894
895 ErrorHandlerPrint(level, location, msg);
896
897 gLog << std::flush;
898 if (!abort)
899 return;
900
901 gLog << err << "aborting" << std::endl;
902 if (gSystem) {
903 gSystem->StackTrace();
904 gSystem->Abort();
905 } else
906 ::abort();
907}
908
909// --------------------------------------------------------------------------
910//
911// Redirect the root ErrorHandler (see TError.h) output to gLog.
912//
913// The diffrent types are:
914// kColor: Use gLog colors
915// kBlackWhite: Use all-qualifier (as in gLog << all << endl;)
916// kDefault: Set back to root's default error handler
917// (redirect output to stderr)
918//
919void MLog::RedirectErrorHandler(ELogType typ)
920{
921 switch (typ)
922 {
923 case kColor:
924 SetErrorHandler(MLog::ErrorHandlerCol);
925 break;
926 case kBlackWhite:
927 SetErrorHandler(MLog::ErrorHandlerAll);
928 break;
929 case kDefault:
930 SetErrorHandler(DefaultErrorHandler);
931 }
932}
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