Inheritance diagram for edm::service::InitRootHandlers:

Classes
class	ThreadTracker

Public Member Functions
	InitRootHandlers (ParameterSet const &pset, ActivityRegistry &iReg)

	~InitRootHandlers () override

Public Member Functions inherited from edm::RootHandlers
template<typename F >
void	ignoreWarningsWhileDoing (F iFunc)

	RootHandlers ()

virtual	~RootHandlers ()

Static Public Member Functions
static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	stacktraceFromThread ()

static int	stackTracePause ()

static const ThreadTracker::Container_type &	threadIDs ()

Static Public Attributes
static std::atomic< std::size_t >	doneModules_

static std::vector< std::array< char, moduleBufferSize > >	moduleListBuffers_

static std::atomic< std::size_t >	nextModule_

Private Member Functions
void	cachePidInfo ()

void	enableWarnings_ () override

void	ignoreWarnings_ () override

void	willBeUsingThreads () override

Static Private Member Functions
static char const	getPstackArgv ()

static void	stacktraceHelperThread ()

Private Attributes
bool	autoLibraryLoader_

bool	loadAllDictionaries_

bool	resetErrHandler_

std::shared_ptr< const void >	sigBusHandler_

std::shared_ptr< const void >	sigIllHandler_

std::shared_ptr< const void >	sigSegvHandler_

std::shared_ptr< const void >	sigTermHandler_

bool	unloadSigHandler_

Static Private Attributes
static int	childToParent_ [2] = {-1, -1}

static std::unique_ptr< std::thread >	helperThread_

static int	parentToChild_ [2] = {-1, -1}

static char	pidString_ [pidStringLength_] = {}

static const int	pidStringLength_ = 200

static char *const	pstackArgv_ [] = {pstackName, dashC, InitRootHandlers::pidString_, 0 }

static int	stackTracePause_ = 300

static ThreadTracker	threadTracker_

Friends
int	cmssw_stacktrace (void *)

Detailed Description

Definition at line 64 of file InitRootHandlers.cc.

Constructor & Destructor Documentation

edm::service::InitRootHandlers::InitRootHandlers	(	ParameterSet const &	pset,
		ActivityRegistry &	iReg
	)

explicit

Definition at line 751 of file InitRootHandlers.cc.

References autoLibraryLoader_, edm::TypeWithDict::byName(), cachePidInfo(), UEAnalysisJets_cfi::debugLevel, edm::ParameterSet::getUntrackedParameter(), edm::hasDictionary(), edm::installCustomHandler(), edm::service::SystemBounds::maxNumberOfThreads(), moduleListBuffers_, resetErrHandler_, edm::setRefCoreStreamer(), sigBusHandler_, sigIllHandler_, sigSegvHandler_, sigTermHandler_, stackTracePause_, unloadSigHandler_, and edm::ActivityRegistry::watchPreallocate().

       : RootHandlers(),
         unloadSigHandler_(pset.getUntrackedParameter<bool> ("UnloadRootSigHandler")),
         resetErrHandler_(pset.getUntrackedParameter<bool> ("ResetRootErrHandler")),
         loadAllDictionaries_(pset.getUntrackedParameter<bool>("LoadAllDictionaries")),
         autoLibraryLoader_(loadAllDictionaries_ or pset.getUntrackedParameter<bool> ("AutoLibraryLoader"))
     {
       stackTracePause_ = pset.getUntrackedParameter<int> ("StackTracePauseTime");
       
       if(unloadSigHandler_) {
       // Deactivate all the Root signal handlers and restore the system defaults
         gSystem->ResetSignal(kSigChild);
         gSystem->ResetSignal(kSigBus);
         gSystem->ResetSignal(kSigSegmentationViolation);
         gSystem->ResetSignal(kSigIllegalInstruction);
         gSystem->ResetSignal(kSigSystem);
         gSystem->ResetSignal(kSigPipe);
         gSystem->ResetSignal(kSigAlarm);
         gSystem->ResetSignal(kSigUrgent);
         gSystem->ResetSignal(kSigFloatingException);
         gSystem->ResetSignal(kSigWindowChanged);
       } else if(pset.getUntrackedParameter<bool>("AbortOnSignal")){
         cachePidInfo();
 
         //NOTE: ROOT can also be told to abort on these kinds of problems BUT
         // it requires an TApplication to be instantiated which causes problems
         gSystem->ResetSignal(kSigBus);
         gSystem->ResetSignal(kSigSegmentationViolation);
         gSystem->ResetSignal(kSigIllegalInstruction);
         installCustomHandler(SIGBUS,sig_dostack_then_abort);
         sigBusHandler_ = std::shared_ptr<const void>(nullptr,[](void*) {
           installCustomHandler(SIGBUS,sig_abort);
         });
         installCustomHandler(SIGSEGV,sig_dostack_then_abort);
         sigSegvHandler_ = std::shared_ptr<const void>(nullptr,[](void*) {
           installCustomHandler(SIGSEGV,sig_abort);
         });
         installCustomHandler(SIGILL,sig_dostack_then_abort);
         sigIllHandler_ = std::shared_ptr<const void>(nullptr,[](void*) {
           installCustomHandler(SIGILL,sig_abort);
         });
         installCustomHandler(SIGTERM,sig_dostack_then_abort);
         sigTermHandler_ = std::shared_ptr<const void>(nullptr,[](void*) {
           installCustomHandler(SIGTERM,sig_abort);
         });
       }
 
       iReg.watchPreallocate([](edm::service::SystemBounds const& iBounds){
         if (iBounds.maxNumberOfThreads() > moduleListBuffers_.size()) {
           moduleListBuffers_.resize(iBounds.maxNumberOfThreads());
         }
       });
 
       if(resetErrHandler_) {
 
       // Replace the Root error handler with one that uses the MessageLogger
         SetErrorHandler(RootErrorHandler);
       }
 
       // Enable automatic Root library loading.
       if(autoLibraryLoader_) {
         gInterpreter->SetClassAutoloading(1);
       }
 
       // Set ROOT parameters.
       TTree::SetMaxTreeSize(kMaxLong64);
       TH1::AddDirectory(kFALSE);
       //G__SetCatchException(0);
 
       // Set custom streamers
       setRefCoreStreamer();
 
       // Load the library containing dictionaries for std:: classes, if not already loaded.
       if (!hasDictionary(typeid(std::vector<std::vector<unsigned int> >))) {
          TypeWithDict::byName("std::vector<std::vector<unsigned int> >");
       }
 
       int debugLevel = pset.getUntrackedParameter<int>("DebugLevel");
       if(debugLevel >0) {
     gDebug = debugLevel;
       }
 
       // Enable Root implicit multi-threading
       bool imt = pset.getUntrackedParameter<bool>("EnableIMT");
       if (imt && not ROOT::IsImplicitMTEnabled()) {
         ROOT::EnableImplicitMT();
       }
     }

edm::service::InitRootHandlers::~InitRootHandlers ( )

override

Definition at line 840 of file InitRootHandlers.cc.

References f, and GetRecoTauVFromDQM_MC_cff::obj.

                                          {
       // close all open ROOT files
       TIter iter(gROOT->GetListOfFiles());
       TObject *obj = nullptr;
       while(nullptr != (obj = iter.Next())) {
         TFile* f = dynamic_cast<TFile*>(obj);
         if(f) {
           // We get a new iterator each time,
           // because closing a file can invalidate the iterator
           f->Close();
           iter = TIter(gROOT->GetListOfFiles());
         }
       }
     }

Member Function Documentation

void edm::service::InitRootHandlers::cachePidInfo ( )

private

Definition at line 904 of file InitRootHandlers.cc.

References childToParent_, helperThread_, edm::errors::OtherCMS, parentToChild_, pidString_, pidStringLength_, and stacktraceHelperThread().

Referenced by InitRootHandlers().

     {
       if(helperThread_) {
         //Another InitRootHandlers was initialized in this job, possibly
         // because multiple EventProcessors are being used.
         //In that case, we are already all setup
         return;
       }
       if (snprintf(pidString_, pidStringLength_-1, "gdb -quiet -p %d 2>&1 <<EOF |\n"
         "set width 0\n"
         "set height 0\n"
         "set pagination no\n"
         "thread apply all bt\n"
         "EOF\n"
         "/bin/sed -n -e 's/^\\((gdb) \\)*//' -e '/^#/p' -e '/^Thread/p'", getpid()) >= pidStringLength_)
       {
         std::ostringstream sstr;
         sstr << "Unable to pre-allocate stacktrace handler information";
         edm::Exception except(edm::errors::OtherCMS, sstr.str());
         throw except;
       }
 
       // These are initialized to -1; harmless to close an invalid FD.
       // If this is called post-fork, we don't want to be communicating on
       // these FDs as they are used internally by the parent.
       close(childToParent_[0]);
       close(childToParent_[1]);
       childToParent_[0] = -1; childToParent_[1] = -1;
       close(parentToChild_[0]);
       close(parentToChild_[1]);
       parentToChild_[0] = -1; parentToChild_[1] = -1;
 
       if (-1 == pipe2(childToParent_, O_CLOEXEC))
       {
         std::ostringstream sstr;
         sstr << "Failed to create child-to-parent pipes (errno=" << errno << "): " << strerror(errno);
         edm::Exception except(edm::errors::OtherCMS, sstr.str());
         throw except;
       }
 
       if (-1 == pipe2(parentToChild_, O_CLOEXEC))
       {
         close(childToParent_[0]); close(childToParent_[1]);
         childToParent_[0] = -1; childToParent_[1] = -1;
         std::ostringstream sstr;
         sstr << "Failed to create child-to-parent pipes (errno=" << errno << "): " << strerror(errno);
         edm::Exception except(edm::errors::OtherCMS, sstr.str());
         throw except;
       }
 
       helperThread_.reset(new std::thread(stacktraceHelperThread));
       helperThread_->detach();
     }

void edm::service::InitRootHandlers::enableWarnings_ ( )

overrideprivatevirtual

Implements edm::RootHandlers.

Definition at line 894 of file InitRootHandlers.cc.

                                       {
       s_ignoreWarnings =false;
     }

void edm::service::InitRootHandlers::fillDescriptions ( ConfigurationDescriptions & descriptions )

static

Definition at line 866 of file InitRootHandlers.cc.

References edm::ConfigurationDescriptions::add(), edm::ParameterSetDescription::addUntracked(), and edm::ParameterSetDescription::setComment().

                                                                                    {
       ParameterSetDescription desc;
       desc.setComment("Centralized interface to ROOT.");
       desc.addUntracked<bool>("UnloadRootSigHandler", false)
           ->setComment("If True, signals are handled by this service, rather than by ROOT.");
       desc.addUntracked<bool>("ResetRootErrHandler", true)
           ->setComment("If True, ROOT messages (e.g. errors, warnings) are handled by this service, rather than by ROOT.");
       desc.addUntracked<bool>("AutoLibraryLoader", true)
           ->setComment("If True, enables automatic loading of data dictionaries.");
       desc.addUntracked<bool>("LoadAllDictionaries",false)
           ->setComment("If True, loads all ROOT dictionaries.");
       desc.addUntracked<bool>("EnableIMT",true)
           ->setComment("If True, calls ROOT::EnableImplicitMT().");
       desc.addUntracked<bool>("AbortOnSignal",true)
           ->setComment("If True, do an abort when a signal occurs that causes a crash. If False, ROOT will do an exit which attempts to do a clean shutdown.");
       desc.addUntracked<int>("DebugLevel",0)
           ->setComment("Sets ROOT's gDebug value.");
       desc.addUntracked<int>("StackTracePauseTime", 300)
           ->setComment("Seconds to pause other threads during stack trace.");
       descriptions.add("InitRootHandlers", desc);
     }

char *const * edm::service::InitRootHandlers::getPstackArgv ( )

staticprivate

Definition at line 889 of file InitRootHandlers.cc.

References pstackArgv_.

Referenced by edm::service::cmssw_stacktrace().

                                     {
       return pstackArgv_;
     }

void edm::service::InitRootHandlers::ignoreWarnings_ ( )

overrideprivatevirtual

Implements edm::RootHandlers.

Definition at line 899 of file InitRootHandlers.cc.

                                       {
       s_ignoreWarnings = true;
     }

void edm::service::InitRootHandlers::stacktraceFromThread ( )

static

Definition at line 662 of file InitRootHandlers.cc.

References childToParent_, parentToChild_, and mps_fire::result.

     {
       int result = full_write(parentToChild_[1], "1");
       if (result < 0)
       {
         full_cerr_write("\n\nAttempt to request stacktrace failed: ");
         full_cerr_write(strerror(-result));
         full_cerr_write("\n");
         return;
       }
       char buf[2]; buf[1] = '\0';
       if ((result = full_read(childToParent_[0], buf, 1, 5*60)) < 0)
       {
         full_cerr_write("\n\nWaiting for stacktrace completion failed: ");
         if (result == -ETIMEDOUT)
         {
           full_cerr_write("timed out waiting for GDB to complete.");
         }
         else
         {
           full_cerr_write(strerror(-result));
         }
         full_cerr_write("\n");
         return;
       }
     }

void edm::service::InitRootHandlers::stacktraceHelperThread ( )

staticprivate

Definition at line 610 of file InitRootHandlers.cc.

References childToParent_, edm::service::cmssw_stacktrace_fork(), parentToChild_, and mps_fire::result.

Referenced by cachePidInfo().

     {
       int toParent = childToParent_[1];
       int fromParent = parentToChild_[0];
       char buf[2]; buf[1] = '\0';
 
       while(true)
       {
         int result = full_read(fromParent, buf, 1);
         if (result < 0)
         {
           // To avoid a deadlock (this function is NOT re-entrant), reset signals
           // We never set them back to the CMSSW handler because we assume the parent
           // thread will abort for us.
           set_default_signals();
           close(toParent);
           full_cerr_write("\n\nTraceback helper thread failed to read from parent: ");
           full_cerr_write(strerror(-result));
           full_cerr_write("\n");
           ::abort();
         }
         if (buf[0] == '1')
         {
           set_default_signals();
           cmssw_stacktrace_fork();
           full_write(toParent, buf);
         }
         else if (buf[0] == '2')
         {
           // We have just finished forking.  Reload the file descriptors for thread
           // communication.
           close(toParent);
           close(fromParent);
           toParent = childToParent_[1];
           fromParent = parentToChild_[0];
         }
         else if (buf[0] == '3')
         {
           break;
         }
         else
         {
           set_default_signals();
           close(toParent);
           full_cerr_write("\n\nTraceback helper thread got unknown command from parent: ");
           full_cerr_write(buf);
           full_cerr_write("\n");
           ::abort();
         }
       }
     }

static int edm::service::InitRootHandlers::stackTracePause ( )

inlinestatic

Definition at line 97 of file InitRootHandlers.cc.

References stackTracePause_.

97 { return stackTracePause_; }

edm::service::InitRootHandlers::stackTracePause_

static int stackTracePause_

Definition: InitRootHandlers.cc:117

static const ThreadTracker::Container_type& edm::service::InitRootHandlers::threadIDs ( )

inlinestatic

Definition at line 96 of file InitRootHandlers.cc.

References edm::service::InitRootHandlers::ThreadTracker::IDs(), and threadTracker_.

96 { return threadTracker_.IDs(); }

edm::service::InitRootHandlers::threadTracker_

static ThreadTracker threadTracker_

Definition: InitRootHandlers.cc:116

edm::service::InitRootHandlers::ThreadTracker::IDs

const Container_type & IDs()

Definition: InitRootHandlers.cc:85

void edm::service::InitRootHandlers::willBeUsingThreads ( )

overrideprivatevirtual

Implements edm::RootHandlers.

Definition at line 855 of file InitRootHandlers.cc.

                                               {
       //Tell Root we want to be multi-threaded
       ROOT::EnableThreadSafety();
 
       //When threading, also have to keep ROOT from logging all TObjects into a list
       TObject::SetObjectStat(false);
       
       //Have to avoid having Streamers modify themselves after they have been used
       TVirtualStreamerInfo::Optimize(false);
     }

Friends And Related Function Documentation

int cmssw_stacktrace ( void * )

friend

Definition at line 723 of file InitRootHandlers.cc.

Referenced by edm::service::isProcessWideService().

     {
       char *const *argv = edm::service::InitRootHandlers::getPstackArgv();
       // NOTE: this is NOT async-signal-safe at CERN's lxplus service.
       // CERN uses LD_PRELOAD to replace execv with a function from libsnoopy which
       // calls dlsym.
 #ifdef __linux__
       syscall(SYS_execve, "/bin/sh", argv, __environ);
 #else
       execv("/bin/sh", argv);
 #endif
       ::abort();
       return 1;
     }

Member Data Documentation

bool edm::service::InitRootHandlers::autoLibraryLoader_

private

Definition at line 122 of file InitRootHandlers.cc.

Referenced by InitRootHandlers().

int edm::service::InitRootHandlers::childToParent_ = {-1, -1}

staticprivate

Definition at line 114 of file InitRootHandlers.cc.

Referenced by cachePidInfo(), stacktraceFromThread(), and stacktraceHelperThread().

std::atomic< std::size_t > edm::service::InitRootHandlers::doneModules_

static

Definition at line 100 of file InitRootHandlers.cc.

std::unique_ptr< std::thread > edm::service::InitRootHandlers::helperThread_

staticprivate

Definition at line 115 of file InitRootHandlers.cc.

Referenced by cachePidInfo().

bool edm::service::InitRootHandlers::loadAllDictionaries_

private

Definition at line 121 of file InitRootHandlers.cc.

std::vector< std::array< char, moduleBufferSize > > edm::service::InitRootHandlers::moduleListBuffers_

static

Definition at line 99 of file InitRootHandlers.cc.

Referenced by InitRootHandlers().

std::atomic< std::size_t > edm::service::InitRootHandlers::nextModule_

static

Definition at line 100 of file InitRootHandlers.cc.

int edm::service::InitRootHandlers::parentToChild_ = {-1, -1}

staticprivate

Definition at line 113 of file InitRootHandlers.cc.

Referenced by cachePidInfo(), stacktraceFromThread(), and stacktraceHelperThread().

char edm::service::InitRootHandlers::pidString_ = {}

staticprivate

Definition at line 111 of file InitRootHandlers.cc.

Referenced by cachePidInfo().

const int edm::service::InitRootHandlers::pidStringLength_ = 200

staticprivate

Definition at line 110 of file InitRootHandlers.cc.

Referenced by cachePidInfo().

char *const edm::service::InitRootHandlers::pstackArgv_ = {pstackName, dashC, InitRootHandlers::pidString_, 0 }

staticprivate

Definition at line 112 of file InitRootHandlers.cc.

Referenced by getPstackArgv().

bool edm::service::InitRootHandlers::resetErrHandler_

private

Definition at line 120 of file InitRootHandlers.cc.

Referenced by InitRootHandlers().

std::shared_ptr<const void> edm::service::InitRootHandlers::sigBusHandler_

private

Definition at line 123 of file InitRootHandlers.cc.

Referenced by InitRootHandlers().

std::shared_ptr<const void> edm::service::InitRootHandlers::sigIllHandler_

private

Definition at line 125 of file InitRootHandlers.cc.

Referenced by InitRootHandlers().

std::shared_ptr<const void> edm::service::InitRootHandlers::sigSegvHandler_

private

Definition at line 124 of file InitRootHandlers.cc.

Referenced by InitRootHandlers().

std::shared_ptr<const void> edm::service::InitRootHandlers::sigTermHandler_

private

Definition at line 126 of file InitRootHandlers.cc.

Referenced by InitRootHandlers().

int edm::service::InitRootHandlers::stackTracePause_ = 300

staticprivate

Definition at line 117 of file InitRootHandlers.cc.

Referenced by InitRootHandlers(), and stackTracePause().

InitRootHandlers::ThreadTracker edm::service::InitRootHandlers::threadTracker_

staticprivate

Definition at line 116 of file InitRootHandlers.cc.

Referenced by threadIDs().

bool edm::service::InitRootHandlers::unloadSigHandler_

private

Definition at line 119 of file InitRootHandlers.cc.

Referenced by InitRootHandlers().

Classes

Public Member Functions

Static Public Member Functions

Static Public Attributes

Private Member Functions

Static Private Member Functions

Private Attributes

Static Private Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation