// $Id$
/**************************************************************************
- * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * This file is property of and copyright by the ALICE HLT Project *
+ * ALICE Experiment at CERN, All rights reserved. *
* *
- * Authors: Matthias Richter <Matthias.Richter@ift.uib.no> *
- * Timm Steinbeck <timm@kip.uni-heidelberg.de> *
- * for The ALICE Off-line Project. *
+ * Primary Authors: Matthias Richter <Matthias.Richter@ift.uib.no> *
+ * Timm Steinbeck <timm@kip.uni-heidelberg.de> *
+ * for The ALICE HLT Project. *
* *
* Permission to use, copy, modify and distribute this software and its *
* documentation strictly for non-commercial purposes is hereby granted *
@date
@brief Implementation of HLT component handler. */
+// see header file for class documentation
+// or
+// refer to README to build package
+// or
+// visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
+
#if __GNUC__>= 3
using namespace std;
#endif
//#include <Riostream.h>
#include <TSystem.h>
#endif //HAVE_DLFCN_H
-#include "AliHLTStdIncludes.h"
+//#include "AliHLTStdIncludes.h"
#include "AliHLTComponentHandler.h"
#include "AliHLTComponent.h"
#include "AliHLTDataTypes.h"
-#include "AliHLTSystem.h"
+#include "AliHLTModuleAgent.h"
+#include "TString.h"
/** ROOT macro for the implementation of ROOT specific class methods */
ClassImp(AliHLTComponentHandler)
fComponentList(),
fScheduleList(),
fLibraryList(),
- fEnvironment()
+ fEnvironment(),
+ fOwnedComponents(),
+ fLibraryMode(kDynamic)
{
+ // see header file for class documentation
+ // or
+ // refer to README to build package
+ // or
+ // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
memset(&fEnvironment, 0, sizeof(AliHLTComponentEnvironment));
+ AddStandardComponents();
+}
+
+AliHLTComponentHandler::AliHLTComponentHandler(AliHLTComponentEnvironment* pEnv)
+ :
+ AliHLTLogging(),
+ fComponentList(),
+ fScheduleList(),
+ fLibraryList(),
+ fEnvironment(),
+ fOwnedComponents(),
+ fLibraryMode(kDynamic)
+{
+ // see header file for class documentation
+ if (pEnv) {
+ memcpy(&fEnvironment, pEnv, sizeof(AliHLTComponentEnvironment));
+ if (pEnv->fLoggingFunc) {
+ // the AliHLTLogging::Init method also sets the stream output
+ // and notification handler to AliLog. This should only be done
+ // if the logging environment contains a logging function
+ // for redirection
+ AliHLTLogging::Init(pEnv->fLoggingFunc);
+ }
+ } else {
+ memset(&fEnvironment, 0, sizeof(AliHLTComponentEnvironment));
+ }
+ //#ifndef __DEBUG
+ //SetLocalLoggingLevel(kHLTLogError);
+ //#else
+ //SetLocalLoggingLevel(kHLTLogInfo);
+ //#endif
+
+ AddStandardComponents();
}
AliHLTComponentHandler::~AliHLTComponentHandler()
{
+ // see header file for class documentation
+ DeleteOwnedComponents();
UnloadLibraries();
}
int AliHLTComponentHandler::AnnounceVersion()
{
+ // see header file for class documentation
int iResult=0;
#ifdef PACKAGE_STRING
void HLTbaseCompileInfo( char*& date, char*& time);
HLTbaseCompileInfo(date, time);
if (!date) date="unknown";
if (!time) time="unknown";
- HLTInfo("%s build on %s (%s)", PACKAGE_STRING, date, time);
+ HLTImportant("%s build on %s (%s)", PACKAGE_STRING, date, time);
#else
- HLTInfo("ALICE High Level Trigger (embedded AliRoot build)");
+ HLTImportant("ALICE High Level Trigger build on %s (%s) (embedded AliRoot build)", __DATE__, __TIME__);
#endif
return iResult;
}
+Int_t AliHLTComponentHandler::AddComponent(AliHLTComponent* pSample)
+{
+ // see header file for class documentation
+ Int_t iResult=0;
+ if (pSample==NULL) return -EINVAL;
+ if ((iResult=RegisterComponent(pSample))>=0) {
+ //HLTDebug("sample %s (%p) managed by handler", pSample->GetComponentID(), pSample);
+ fOwnedComponents.push_back(pSample);
+ }
+ return iResult;
+}
+
Int_t AliHLTComponentHandler::RegisterComponent(AliHLTComponent* pSample)
{
+ // see header file for class documentation
Int_t iResult=0;
if (pSample) {
if (FindComponent(pSample->GetComponentID())==NULL) {
int AliHLTComponentHandler::DeregisterComponent( const char* componentID )
{
+ // see header file for class documentation
+
int iResult=0;
if (componentID) {
+ HLTWarning("not yet implemented, please notify the developers if you need this function");
} else {
iResult=-EINVAL;
}
Int_t AliHLTComponentHandler::ScheduleRegister(AliHLTComponent* pSample)
{
+ // see header file for class documentation
Int_t iResult=0;
if (pSample) {
fScheduleList.push_back(pSample);
return iResult;
}
-int AliHLTComponentHandler::CreateComponent(const char* componentID, void* pEnv, int argc, const char** argv, AliHLTComponent*& component )
+int AliHLTComponentHandler::CreateComponent(const char* componentID, void* pEnvParam, int argc, const char** argv, AliHLTComponent*& component, const char* cdbPath )
{
+ // see header file for class documentation
int iResult=0;
if (componentID) {
AliHLTComponent* pSample=FindComponent(componentID);
component=pSample->Spawn();
if (component) {
HLTDebug("component \"%s\" created (%p)", componentID, component);
- if ((iResult=component->Init(&fEnvironment, pEnv, argc, argv))!=0) {
+ component->InitCDB(cdbPath, this);
+ if ((iResult=component->Init(&fEnvironment, pEnvParam, argc, argv))!=0) {
HLTError("Initialization of component \"%s\" failed with error %d", componentID, iResult);
delete component;
component=NULL;
Int_t AliHLTComponentHandler::FindComponentIndex(const char* componentID)
{
+ // see header file for class documentation
Int_t iResult=0;
if (componentID) {
- vector<AliHLTComponent*>::iterator element=fComponentList.begin();
+ AliHLTComponentPList::iterator element=fComponentList.begin();
while (element!=fComponentList.end() && iResult>=0) {
if (strcmp(componentID, (*element)->GetComponentID())==0) {
break;
AliHLTComponent* AliHLTComponentHandler::FindComponent(const char* componentID)
{
+ // see header file for class documentation
AliHLTComponent* pSample=NULL;
Int_t index=FindComponentIndex(componentID);
if (index>=0) {
Int_t AliHLTComponentHandler::InsertComponent(AliHLTComponent* pSample)
{
+ // see header file for class documentation
Int_t iResult=0;
if (pSample!=NULL) {
fComponentList.push_back(pSample);
return iResult;
}
-void AliHLTComponentHandler::List() {
- vector<AliHLTComponent*>::iterator element=fComponentList.begin();
+void AliHLTComponentHandler::List()
+{
+ // see header file for class documentation
+ AliHLTComponentPList::iterator element=fComponentList.begin();
int index=0;
while (element!=fComponentList.end()) {
HLTInfo("%d. %s", index++, (*element++)->GetComponentID());
}
}
-void AliHLTComponentHandler::SetEnvironment(AliHLTComponentEnvironment* pEnv) {
+int AliHLTComponentHandler::HasOutputData( const char* componentID)
+{
+ // see header file for class documentation
+ int iResult=0;
+ AliHLTComponent* pSample=FindComponent(componentID);
+ if (pSample) {
+ AliHLTComponent::TComponentType ct=AliHLTComponent::kUnknown;
+ ct=pSample->GetComponentType();
+ iResult=(ct==AliHLTComponent::kSource || ct==AliHLTComponent::kProcessor);
+ } else {
+ iResult=-ENOENT;
+ }
+ return iResult;
+}
+
+void AliHLTComponentHandler::SetEnvironment(AliHLTComponentEnvironment* pEnv)
+{
+ // see header file for class documentation
if (pEnv) {
memcpy(&fEnvironment, pEnv, sizeof(AliHLTComponentEnvironment));
- AliHLTLogging::Init(fEnvironment.fLoggingFunc);
+ if (fEnvironment.fLoggingFunc) {
+ // the AliHLTLogging::Init method also sets the stream output
+ // and notification handler to AliLog. This should only be done
+ // if the logging environment contains a logging function
+ // for redirection
+ AliHLTLogging::Init(fEnvironment.fLoggingFunc);
+ }
}
}
-int AliHLTComponentHandler::LoadLibrary( const char* libraryPath )
+AliHLTComponentHandler::TLibraryMode AliHLTComponentHandler::SetLibraryMode(TLibraryMode mode)
{
+ // see header file for class documentation
+ TLibraryMode old=fLibraryMode;
+ fLibraryMode=mode;
+ return old;
+}
+
+int AliHLTComponentHandler::LoadLibrary( const char* libraryPath, int bActivateAgents)
+{
+ // see header file for class documentation
int iResult=0;
if (libraryPath) {
+ // first activate all agents which are already loaded
+ if (bActivateAgents) ActivateAgents();
+
+ // set the global component handler for static component registration
AliHLTComponent::SetGlobalComponentHandler(this);
- AliHLTLibHandle hLib=NULL;
+
+ AliHLTLibHandle hLib;
+ const char* loadtype="";
#ifdef HAVE_DLFCN_H
// use interface to the dynamic linking loader
- hLib=dlopen(libraryPath, RTLD_NOW);
+
+ // exeption does not help in Root context, the Root exeption
+ // handler always catches the exeption before. Have to find out
+ // how exeptions can be used in Root
+ /*try*/ {
+ hLib.fHandle=dlopen(libraryPath, RTLD_NOW);
+ loadtype="dlopen";
+ }
+ /*
+ catch (...) {
+ // error message printed further down
+ loadtype="dlopen exeption";
+ }
+ */
#else
// use ROOT dynamic loader
- if (gSystem->Load(libraryPath)==0) {
- // create TString object to store library path and use pointer as handle
- hLib=reinterpret_cast<AliHLTLibHandle>(new TString(libraryPath));
+ // check if the library was already loaded, as Load returns
+ // 'failure' if the library was already loaded
+ /*try*/ {
+ AliHLTLibHandle* pLib=FindLibrary(libraryPath);
+ if (pLib) {
+ int* pRootHandle=reinterpret_cast<int*>(pLib->fHandle);
+ (*pRootHandle)++;
+ HLTDebug("instance %d of library %s loaded", (*pRootHandle), libraryPath);
+ hLib.fHandle=pRootHandle;
+ }
+
+ if (hLib.fHandle==NULL && gSystem->Load(libraryPath)>=0) {
+ int* pRootHandle=new int;
+ if (pRootHandle) *pRootHandle=1;
+ hLib.fHandle=pRootHandle;
+ //HLTDebug("library %s loaded via gSystem", libraryPath);
+ }
+ loadtype="gSystem";
}
+ /*
+ catch (...) {
+ // error message printed further down
+ loadtype="gSystem exeption";
+ }
+ */
#endif //HAVE_DLFCN_H
- if (hLib) {
- HLTInfo("library %s loaded", libraryPath);
- fLibraryList.push_back(hLib);
- vector<AliHLTComponent*>::iterator element=fScheduleList.begin();
- int iSize=fScheduleList.size();
- int iLocalResult=0;
- while (iSize-- > 0) {
- element=fScheduleList.begin();
- iLocalResult=RegisterComponent(*element);
- if (iResult==0) iResult=iLocalResult;
- fScheduleList.erase(element);
+ if (hLib.fHandle!=NULL) {
+ // create TString object to store library path and use pointer as handle
+ hLib.fName=new TString(libraryPath);
+ hLib.fMode=fLibraryMode;
+ HLTImportant("library %s loaded (%s%s)", libraryPath, hLib.fMode==kStatic?"persistent, ":"", loadtype);
+ fLibraryList.insert(fLibraryList.begin(), hLib);
+ typedef void (*CompileInfo)( char*& date, char*& time);
+ CompileInfo fctInfo=(CompileInfo)FindSymbol(libraryPath, "CompileInfo");
+ if (fctInfo) {
+ char* date="";
+ char* time="";
+ (*fctInfo)(date, time);
+ if (!date) date="unknown";
+ if (!time) time="unknown";
+ HLTImportant("build on %s (%s)", date, time);
+ } else {
+ HLTImportant("no build info available (possible AliRoot embedded build)");
}
+
+ // static registration of components when library is loaded
+ iResult=RegisterScheduledComponents();
+
} else {
- HLTError("can not load library %s", libraryPath);
+ HLTError("can not load library %s (%s)", libraryPath, loadtype);
#ifdef HAVE_DLFCN_H
HLTError("dlopen error: %s", dlerror());
#endif //HAVE_DLFCN_H
#endif
}
AliHLTComponent::UnsetGlobalComponentHandler();
+
+ if (iResult>=0) {
+ // alternative dynamic registration by library agents
+ // !!! has to be done after UnsetGlobalComponentHandler
+ if (bActivateAgents) ActivateAgents();
+ }
+
} else {
iResult=-EINVAL;
}
int AliHLTComponentHandler::UnloadLibrary( const char* libraryPath )
{
+ // see header file for class documentation
int iResult=0;
if (libraryPath) {
+ vector<AliHLTLibHandle>::iterator element=fLibraryList.begin();
+ while (element!=fLibraryList.end()) {
+ TString* pName=reinterpret_cast<TString*>((*element).fName);
+ if (pName->CompareTo(libraryPath)==0) {
+ UnloadLibrary(*element);
+ fLibraryList.erase(element);
+ break;
+ }
+ element++;
+ }
} else {
iResult=-EINVAL;
}
return iResult;
}
+int AliHLTComponentHandler::UnloadLibrary(AliHLTComponentHandler::AliHLTLibHandle &handle)
+{
+ // see header file for class documentation
+ int iResult=0;
+ fgAliLoggingFunc=NULL;
+ TString* pName=reinterpret_cast<TString*>(handle.fName);
+ if (handle.fMode!=kStatic) {
+#ifdef HAVE_DLFCN_H
+ // exeption does not help in Root context, the Root exeption
+ // handler always catches the exeption before. Have to find out
+ // how exeptions can be used in Root
+
+ /*try*/ {
+ dlclose(handle.fHandle);
+ }
+ /*
+ catch (...) {
+ HLTError("exeption caught during dlclose of library %s", pName!=NULL?pName->Data():"");
+ }
+ */
+#else
+ int* pCount=reinterpret_cast<int*>(handle.fHandle);
+ if (--(*pCount)==0) {
+ if (pName) {
+ /** Matthias 26.04.2007
+ * I spent about a week to investigate a bug which seems to be in ROOT.
+ * Under certain circumstances, TSystem::Unload crashes. The crash occured
+ * for the first time, when libAliHLTUtil was loaded from AliHLTSystem right
+ * after the ComponentHandler was created. It does not occur when dlopen is
+ * used.
+ * It has most likely to do with the garbage collection and automatic
+ * cleanup in ROOT. The crash occurs when ROOT is terminated and before
+ * an instance of AliHLTSystem was created.
+ * root [0] AliHLTSystem gHLT
+ * It does not occur when the instance was created dynamically (but not even
+ * deleted)
+ * root [0] AliHLTSystem* gHLT=new AliHLTSystem
+ *
+ * For that reason, the libraries are not unloaded here, even though there
+ * will be memory leaks.
+ gSystem->Unload(pName->Data());
+ */
+ }
+ else {
+ HLTError("missing library name, can not unload");
+ }
+ delete pCount;
+ }
+#endif //HAVE_DLFCN_H
+ if (pName) {
+ HLTDebug("unload library %s", pName->Data());
+ } else {
+ HLTWarning("missing name for unloaded library");
+ }
+ }
+ handle.fName=NULL;
+ handle.fHandle=NULL;
+ if (pName) {
+ delete pName;
+ }
+ pName=NULL;
+ return iResult;
+}
+
int AliHLTComponentHandler::UnloadLibraries()
{
+ // see header file for class documentation
int iResult=0;
vector<AliHLTLibHandle>::iterator element=fLibraryList.begin();
while (element!=fLibraryList.end()) {
+ UnloadLibrary(*element);
+ fLibraryList.erase(element);
+ element=fLibraryList.begin();
+ }
+ return iResult;
+}
+
+void* AliHLTComponentHandler::FindSymbol(const char* library, const char* symbol)
+{
+ // see header file for class documentation
+ AliHLTLibHandle* hLib=FindLibrary(library);
+ if (hLib==NULL) return NULL;
+ void* pFunc=NULL;
#ifdef HAVE_DLFCN_H
- dlclose(*element);
+ pFunc=dlsym(hLib->fHandle, symbol);
#else
- TString* libraryPath=reinterpret_cast<TString*>(*element);
- gSystem->Unload(libraryPath->Data());
- delete libraryPath;
-#endif //HAVE_DLFCN_H
+ TString* name=reinterpret_cast<TString*>(hLib->fName);
+ pFunc=gSystem->DynFindSymbol(name->Data(), symbol);
+#endif
+ return pFunc;
+}
+
+AliHLTComponentHandler::AliHLTLibHandle* AliHLTComponentHandler::FindLibrary(const char* library)
+{
+ // see header file for class documentation
+ AliHLTLibHandle* hLib=NULL;
+ vector<AliHLTLibHandle>::iterator element=fLibraryList.begin();
+ while (element!=fLibraryList.end()) {
+ TString* name=reinterpret_cast<TString*>((*element).fName);
+ if (name->CompareTo(library)==0) {
+ hLib=&(*element);
+ break;
+ }
element++;
}
+ return hLib;
+}
+
+int AliHLTComponentHandler::AddStandardComponents()
+{
+ // see header file for class documentation
+ int iResult=0;
+ AliHLTComponent::SetGlobalComponentHandler(this);
+ AliHLTComponent::UnsetGlobalComponentHandler();
+ iResult=RegisterScheduledComponents();
+ return iResult;
+}
+
+int AliHLTComponentHandler::RegisterScheduledComponents()
+{
+ // see header file for class documentation
+ int iResult=0;
+ AliHLTComponentPList::iterator element=fScheduleList.begin();
+ int iLocalResult=0;
+ while (element!=fScheduleList.end()) {
+ iLocalResult=RegisterComponent(*element);
+ if (iResult==0) iResult=iLocalResult;
+ fScheduleList.erase(element);
+ element=fScheduleList.begin();
+ }
+ return iResult;
+}
+
+int AliHLTComponentHandler::ActivateAgents(const AliHLTModuleAgent** blackList, int size)
+{
+ // see header file for class documentation
+ int iResult=0;
+ AliHLTModuleAgent* pAgent=AliHLTModuleAgent::GetFirstAgent();
+ while (pAgent && iResult>=0) {
+ if (blackList) {
+ int i=0;
+ for (; i<size; i++) {
+ if (blackList[i]==pAgent) break;
+ }
+ if (i<size) {
+ // this agent was in the list
+ pAgent=AliHLTModuleAgent::GetNextAgent();
+ continue;
+ }
+ }
+
+ pAgent->ActivateComponentHandler(this);
+ pAgent=AliHLTModuleAgent::GetNextAgent();
+ }
+ return iResult;
+}
+
+int AliHLTComponentHandler::DeleteOwnedComponents()
+{
+ // see header file for class documentation
+ int iResult=0;
+ AliHLTComponentPList::iterator element=fOwnedComponents.begin();
+ while (element!=fOwnedComponents.end()) {
+ //DeregisterComponent((*element)->GetComponentID());
+ // exeption does not help in Root context, the Root exeption
+ // handler always catches the exeption before. Have to find out
+ // how exeptions can be used in Root
+ /*try*/ {
+ delete *element;
+ }
+ /*
+ catch (...) {
+ HLTError("delete managed sample %p", *element);
+ }
+ */
+ fOwnedComponents.erase(element);
+ element=fOwnedComponents.begin();
+ }
return iResult;
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff