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#include <cassert>
#include <cstdio>
#include <cstring>
#include <list>
#include <cctk.h>
#include <cctk_Parameters.h>
#include <util_String.h>
#if HAVE_UNISTD_H
# include <fcntl.h>
# include <unistd.h>
#endif
#include <defs.hh>
#include <Timers.hh>
#include <CactusTimer.hh>
#include <TimerNode.hh>
#include <TimerSet.hh>
namespace Carpet {
using namespace std;
// A global timer set
TimerSet timerSet;
// Add a timer
void
TimerSet::add (CactusTimer * const timer)
{
timers.push_back (timer);
}
// Remove a timer
void
TimerSet::remove (CactusTimer * const timer)
{
timers.remove (timer);
}
// Print all timer names
void
TimerSet::printNames ()
const
{
printf ("Timer names:\n");
int n = 0;
for (list <CactusTimer *>::const_iterator
itimer = timers.begin(); itimer != timers.end(); ++ itimer)
{
printf (" [%4d] %s\n", n, (* itimer)->name().c_str());
++ n;
}
}
// Print all timer data
void
TimerSet::printData ()
{
for (list <CactusTimer *>::const_iterator
itimer = timers.begin(); itimer != timers.end(); ++ itimer)
{
(* itimer)->printData ();
}
printf ("\n");
}
// Print all timer data
void
TimerSet::writeData (cGH const * const cctkGH,
char const * const filename)
{
int const oldfd = redirect (cctkGH, filename);
#if 0
printf ("********************************************************************************\n");
#endif
printf ("# Carpet timing information at iteration %d time %g:\n",
cctkGH->cctk_iteration, (double) cctkGH->cctk_time);
timerSet.printData ();
unredirect (oldfd);
}
// If filename is not empty, then redirect stdout to a file
int
TimerSet::redirect (cGH const * const cctkGH,
char const * const filename)
{
DECLARE_CCTK_PARAMETERS;
if (CCTK_EQUALS (filename, "")) {
return -1;
}
#ifndef HAVE_UNISTD_H
CCTK_WARN (1, "Cannot redirect timer output to a file; the operating system does not support this");
return -1;
#else
int const myproc = CCTK_MyProc (cctkGH);
char fullname [10000];
Util_snprintf (fullname, sizeof fullname,
"%s/%s.%04d.txt", out_dir, filename, myproc);
int flags = O_WRONLY | O_CREAT | O_APPEND; // append
static bool first_time = true;
if (first_time) {
first_time = false;
if (IO_TruncateOutputFiles (cctkGH)) {
flags = O_WRONLY | O_CREAT | O_TRUNC; // truncate
}
}
// Temporarily redirect stdout
fflush (stdout);
int const oldfd = dup (1); // fd 1 is stdout
int const mode = 0644; // rw-r--r--, or a+r u+w
int const fdfile = open (fullname, flags, mode);
if (fdfile < 0) {
CCTK_VWarn (1, __LINE__, __FILE__, CCTK_THORNSTRING,
"Could not open timer output file \"%s\"", fullname);
close (oldfd);
return -1;
}
// close (1);
// int const fd = dup (fdfile); // dup to 1, i.e., stdout again
int const fd = dup2 (fdfile, 1); // dup to 1, i.e., stdout again
assert (fd == 1);
close (fdfile);
return oldfd;
#endif
}
// Redirect stdout back
void
TimerSet::unredirect (int const oldfd)
{
if (oldfd < 0) return;
#ifdef HAVE_UNISTD_H
fflush (stdout);
// close (1);
// int const fd = dup (oldfd);
int const fd = dup2 (oldfd, 1);
if (not (fd == 1)) {
fprintf(stderr, "oldfd=%d fd=%d\n", oldfd, fd);
}
assert (fd == 1);
close (oldfd);
#endif
}
/// Reduce each timers in the set across all processes and update
/// each timer with the reduction information.
void TimerSet::reduce()
{
// Collect timer names that each process has
// Construct union of all timer names, sort canonically and assign
// integer identifiers
// For each timer, identify which processes have that timer
// Reduce the timer across all those processes (return to root proc only)
serialise(cout);
}
ostream& TimerSet::serialise(ostream &os)
{
for (list <CactusTimer *>::const_iterator
itimer = timers.begin(); itimer != timers.end(); ++ itimer)
{
(*itimer)->serialise(os);
os << endl;
}
return os;
}
/*
Each process has a list of (string,real) pairs. I want to return a
list of these where the reals have been reduced using a reduction
operator. Not all processes have the same strings present.
*/
} // namespace Carpet
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