Ejemplo n.º 1
0
Process::cb_ret_t Backend::handleTimeEvent() {
  // Get all subscribed events
  set<Event*>& events = Time::getTimeSubscribers();

  set<Event*>::iterator eventIter = events.begin();
  for(;eventIter != events.end(); eventIter++) {
    Event* event = *eventIter;
    ProcessSet::ptr procset = ((Time *)event)->getProcset();
    ProcessSet::iterator procIter = procset->begin();
    if(procset->size() == 0)
      continue;
    if(!event || !event->isEnabled(*procIter))
      continue; // this is to avoid a race condition where a time event occurs in the middle of iterating through the processes
    DYSECTVERBOSE(true, "Time event with timeout %d detected on %d processes", ((Time *)event)->getTimeout(), procset->size());
    for(;procIter != procset->end(); procIter++) {
      Process::ptr procPtr = *procIter;
      if(event && event->isEnabled(procPtr)) {
        Thread::ptr threadPtr = procPtr->threads().getInitialThread();
        Walker *proc = (Walker *)procPtr->getData();
        handleEvent(procPtr, threadPtr, event);
      }
    }
    if(event->getOwner()->getLifeSpan() == fireOnce)
      event->disable();
  }

  return Process::cbDefault;
}
Ejemplo n.º 2
0
bool Location::disable(ProcessSet::ptr lprocset) {
  assert(owner != 0);
 
  if(codeLocations.empty()) {
    return Err::verbose(true, "No code locations");

  }

  if(!lprocset) {
    return Err::warn(false, "Process set not present");
  }

  ProcessSet::iterator procIter = lprocset->begin();
  for(;procIter != lprocset->end(); procIter++) {
    Process::ptr procPtr = *procIter;

    Walker* proc = (Walker*)procPtr->getData();

    vector<DysectAPI::CodeLocation*>::iterator locationIter = codeLocations.begin();
    for(;locationIter != codeLocations.end(); locationIter++) {
      DysectAPI::CodeLocation* location = *locationIter;

      if(!location->addProcLib(proc)) {
        return Err::warn(false, "Symbol not found in process");
      }

      vector<Dyninst::Address> addrs;
      
      if(!location->getAddrs(proc, addrs) || addrs.empty()) {
        return Err::warn(false, "Addresses for symbol could not be determined");
      }

      // Breakpoint locations at hand
      for(int i = 0; i < addrs.size() ; i++) {
        Dyninst::Address addr = addrs[i];
        
        if(!procPtr->rmBreakpoint(addr, bp)) {
          Err::verbose(false, "Breakpoint not removed! %s", ProcControlAPI::getLastErrorMsg());
        }
      }
    }
  }

  return true;
}
Ejemplo n.º 3
0
bool Location::enable(ProcessSet::ptr lprocset) {
  assert(owner != 0);
 
  if(codeLocations.empty()) {
    return Err::verbose(true, "No code locations");

  }

  if(!lprocset) {
    return Err::warn(false, "Process set not present");
  }
  
  ProcessSet::iterator procIter = lprocset->begin();

  AddressSet::ptr addrset = AddressSet::newAddressSet();

  if(lprocset->size() <= 0) {
    return Err::info(true, "Process set empty!");
  }

  // Find library location for target processes
  for(;procIter != lprocset->end(); procIter++) {
    Process::ptr procPtr = *procIter;

    Walker* proc = (Walker*)procPtr->getData();

    vector<DysectAPI::CodeLocation*>::iterator locationIter = codeLocations.begin();
    for(;locationIter != codeLocations.end(); locationIter++) {
      DysectAPI::CodeLocation* location = *locationIter;

      if(!location->addProcLib(proc)) {
        return Err::warn(false, "Symbol not found in process");
      }

      vector<Dyninst::Address> addrs;
      
      if(!location->getAddrs(proc, addrs) || addrs.empty()) {
        return Err::warn(false, "Addresses for symbol could not be determined");
      }

      // Breakpoint locations at hand
      for(int i = 0; i < addrs.size() ; i++) {
        Dyninst::Address addr = addrs[i];
        
        if(!procPtr->addBreakpoint(addr, bp)) {
          return Err::verbose(false, "Breakpoint not installed: %s", ProcControlAPI::getLastErrorMsg());
        } else {
          Err::verbose(true, "Breakpoint installed at %lx", addr);
        }

        //addrset->insert(addr, procPtr);
      }

      //if(addrs.empty()) {
      //  Err::verbose(true, "No addresses");
      //}
    }

  }
  
  //if(addrset->size() <= 0) {
  //  return Err::verbose(true, "Empty address set");
  //}

  
  //if(!lprocset->addBreakpoint(addrset, nbp)) {
  //  return Err::warn(false, "Could not insert breakpoints!");
  //} else {
  //  Err::info(true, "%d breakpoints inserted in %d processes", addrset->size(), lprocset->size());
  //}

  return true;
}