SimpleProfiler Class Reference

#include <SimpleProfiler.h>

Public Types
typedef VoidVec::size_type	size_type
typedef std::vector< void * >	VoidVec

Public Member Functions
void	commitFrame (void **first, void **last)
void *	stackTop ()
void	start ()
void	stop ()
void **	tempStack ()
size_type	tempStackSize ()

Static Public Member Functions
static SimpleProfiler *	instance ()

Private Member Functions
void	complete ()
void	doWrite ()
	SimpleProfiler ()
	~SimpleProfiler ()

Private Attributes
void **	curr_
int	fd_
std::string	filename_
VoidVec	frame_data_
void **	high_water_
bool	installed_
pthread_t	owner_
bool	running_
void *	stacktop_
VoidVec	tmp_stack_

Static Private Attributes
static SimpleProfiler *	inst_ = 0
static boost::mutex	lock_

Detailed Description

Definition at line 12 of file SimpleProfiler.h.

Member Typedef Documentation

typedef VoidVec::size_type SimpleProfiler::size_type

Definition at line 16 of file SimpleProfiler.h.

typedef std::vector<void*> SimpleProfiler::VoidVec

Definition at line 15 of file SimpleProfiler.h.

Constructor & Destructor Documentation

SimpleProfiler::SimpleProfiler ( )

private

Definition at line 597 of file SimpleProfiler.cc.

References fd_, and filename_.

                              :
  frame_data_(10*1000*1000),
  tmp_stack_(1000),
  high_water_(&frame_data_[10*1000*1000-10*1000]),
  curr_(&frame_data_[0]),
  filename_(makeFileName()),
  fd_(open(filename_.c_str(), 
       O_RDWR|O_CREAT,
       S_IRWXU|S_IRGRP|S_IROTH|S_IWGRP|S_IWOTH)),
  installed_(false),
  running_(false),
  owner_(),
  stacktop_(setStacktop())
{
  if (fd_ < 0) {
    std::ostringstream ost;
    ost << "failed to open profiler output file " << filename_;
    throw std::runtime_error(ost.str().c_str());
  }
  
  openCondFile();
}

SimpleProfiler::~SimpleProfiler ( )

private

Definition at line 620 of file SimpleProfiler.cc.

References benchmark_cfg::cerr, filename_, and running_.

{
  if (running_)
    std::cerr << "Warning: the profile timer was not stopped,\n"
          << "profiling data in " << filename_
          << " is probably incomplete and will not be processed\n";

  closeCondFile();
}

Member Function Documentation

void SimpleProfiler::commitFrame	(	void **	first,
		void **	last
	)

Definition at line 630 of file SimpleProfiler.cc.

References filterCSVwithJSON::copy, curr_, doWrite(), and high_water_.

Referenced by sigFunc().

{
  void** cnt_ptr = curr_; 
  *cnt_ptr = reinterpret_cast<void*>(std::distance(first,last));
  ++curr_;
  curr_ = std::copy(first,last,curr_);
  if(curr_ > high_water_) doWrite();
}

void SimpleProfiler::complete ( )

private

Definition at line 719 of file SimpleProfiler.cc.

References benchmark_cfg::cerr, doWrite(), fd_, filename_, edmtest::makeFileName(), and writeProfileData().

Referenced by stop().

{
  doWrite();

  if(lseek(fd_,0,SEEK_SET)<0)
    {
      std::cerr << "SimpleProfiler: could not seek to the start of the profile\n"
        << " data file during completion.  Data will be lost.\n";
      return;
    }

  writeProfileData(fd_,filename_);
  write_maps();

  std::string totsname = makeFileName();
  totsname += "_sample_info";
  std::ofstream ost(totsname.c_str());
  
  ost << "samples_total " << samples_total << "\n"
      << "samples_missing_framepointer " << samples_missing_framepointer << "\n" ;
}

void SimpleProfiler::doWrite ( )

private

Definition at line 639 of file SimpleProfiler.cc.

References curr_, fd_, frame_data_, and start().

Referenced by commitFrame(), and complete().

{
  void** start = &frame_data_[0];
  if(curr_ == start) return;
  unsigned int cnt = std::distance(start,curr_) * sizeof(void*);
  unsigned int totwr=0;

  while (cnt>0 && (totwr=write(fd_,start,cnt)) != cnt) {
    if(totwr==0) 
      throw std::runtime_error("SimpleProfiler::doWrite wrote zero bytes");
    start+=(totwr/sizeof(void*));
    cnt-=totwr;
  }

  curr_ = &frame_data_[0];
}

SimpleProfiler * SimpleProfiler::instance ( )

static

Definition at line 583 of file SimpleProfiler.cc.

References inst_, lock_, and L1TEmulatorMonitor_cff::p.

Referenced by edm::service::SimpleProfiling::postBeginJob(), edm::service::SimpleProfiling::postEndJob(), and sigFunc().

{
  if(SimpleProfiler::inst_ == 0)
    {
      boost::mutex::scoped_lock sl(lock_);
      if(SimpleProfiler::inst_ == 0)
    {
      static SimpleProfiler p;
      SimpleProfiler::inst_ = &p;
    }
    }
  return SimpleProfiler::inst_;
}

void* SimpleProfiler::stackTop ( )

inline

Definition at line 23 of file SimpleProfiler.h.

References stacktop_.

{ return stacktop_; }

void SimpleProfiler::start

(

void

)

Definition at line 656 of file SimpleProfiler.cc.

References benchmark_cfg::cerr, installed_, lock_, owner_, and running_.

Referenced by doWrite(), and edm::service::SimpleProfiling::postBeginJob().

{
#if defined(__x86_64__) || defined(__LP64__) || defined(_LP64)
  throw std::logic_error("SimpleProfiler not available on 64 bit platform");
#endif
  {
    boost::mutex::scoped_lock sl(lock_);

    if (installed_) {
      std::cerr << "Warning: second thread " << pthread_self()
        << " requested the profiler timer and another thread\n"
        << owner_ << "has already started it.\n"
        << "Only one thread can do profiling at a time.\n"
        << "This second thread will not be profiled.\n";
      return;
    }
    
    installed_ = true;
  }

  owner_ = pthread_self();
  setupTimer();
  running_ = true;
}

void SimpleProfiler::stop

(

)

Definition at line 681 of file SimpleProfiler.cc.

References benchmark_cfg::cerr, complete(), installed_, owner_, and running_.

Referenced by edm::service::SimpleProfiling::postEndJob().

{
  if(!installed_)
    {
      std::cerr << "SimpleProfiler::stop - no timer installed to stop\n";
      return;
    }

  if(owner_ != pthread_self())
    {
      std::cerr << "SimpleProfiler::stop - only owning thread can stop the timer\n";
      return;
    }

  if(!running_)
    {
      std::cerr << "SimpleProfiler::stop - no timer is running\n";
      return;
    }

  struct itimerval newval;

  newval.it_interval.tv_sec  = 0;
  newval.it_interval.tv_usec = 0;
  newval.it_value.tv_sec  = 0;
  newval.it_value.tv_usec = 0;

  if(setitimer(ITIMER_PROF,&newval,0)!=0)
    {
      perror("setitimer call failed - could not stop the timer");
    }

  running_=false;
  complete();
}

void** SimpleProfiler::tempStack ( )

inline

Definition at line 24 of file SimpleProfiler.h.

References tmp_stack_.

Referenced by sigFunc().

{ return &tmp_stack_[0]; }

size_type SimpleProfiler::tempStackSize ( )

inline

Definition at line 25 of file SimpleProfiler.h.

References tmp_stack_.

Referenced by sigFunc().

{ return tmp_stack_.size(); }

Member Data Documentation

void** SimpleProfiler::curr_

private

Definition at line 41 of file SimpleProfiler.h.

Referenced by commitFrame(), and doWrite().

int SimpleProfiler::fd_

private

Definition at line 43 of file SimpleProfiler.h.

Referenced by complete(), doWrite(), and SimpleProfiler().

std::string SimpleProfiler::filename_

private

Definition at line 42 of file SimpleProfiler.h.

Referenced by complete(), SimpleProfiler(), and ~SimpleProfiler().

VoidVec SimpleProfiler::frame_data_

private

Definition at line 38 of file SimpleProfiler.h.

Referenced by doWrite().

void** SimpleProfiler::high_water_

private

Definition at line 40 of file SimpleProfiler.h.

Referenced by commitFrame().

SimpleProfiler * SimpleProfiler::inst_ = 0

staticprivate

Definition at line 36 of file SimpleProfiler.h.

Referenced by instance().

bool SimpleProfiler::installed_

private

Definition at line 44 of file SimpleProfiler.h.

Referenced by start(), and stop().

boost::mutex SimpleProfiler::lock_

staticprivate

Definition at line 37 of file SimpleProfiler.h.

Referenced by instance(), and start().

pthread_t SimpleProfiler::owner_

private

Definition at line 46 of file SimpleProfiler.h.

Referenced by start(), and stop().

bool SimpleProfiler::running_

private

Definition at line 45 of file SimpleProfiler.h.

Referenced by start(), stop(), and ~SimpleProfiler().

void* SimpleProfiler::stacktop_

private

Definition at line 47 of file SimpleProfiler.h.

Referenced by stackTop().

VoidVec SimpleProfiler::tmp_stack_

private

Definition at line 39 of file SimpleProfiler.h.

Referenced by tempStack(), and tempStackSize().