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posix kill

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This commit is contained in:
David Rose 2009-07-15 00:14:38 +00:00
parent bf417aca6b
commit e915c44328
1 changed files with 52 additions and 3 deletions
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55
direct/src/plugin/p3dSession.cxx
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@ -28,6 +28,9 @@
#ifndef _WIN32
#include <fcntl.h>
#include <sys/wait.h>
#include <sys/select.h>
#include <signal.h>
#endif
////////////////////////////////////////////////////////////////////
@ -106,18 +109,64 @@ shutdown() {
// a hang. Don't need to close it yet.
// _pipe_read.close();
static const double max_wait_secs = 2;
#ifdef _WIN32
// Now give the process a chance to terminate itself cleanly.
if (WaitForSingleObject(_p3dpython_handle, 2000) == WAIT_TIMEOUT) {
// It didn't shut down cleanly, so kill it the hard way.
nout << "Terminating process.\n" << flush;
TerminateProcess(_p3dpython_handle, 2);
nout << "Force-killing python process.\n" << flush;
TerminateProcess(_p3dpython_handle, max_wait_secs);
}
CloseHandle(_p3dpython_handle);
#else // _WIN32
// TODO: posix kill().
// Wait for a certain amount of time for the process to stop by
// itself.
struct timeval start;
gettimeofday(&start, NULL);
double start_secs = start.tv_sec + start.tv_usec / 1000000.0;
int status;
nout << "waiting for pid " << _p3dpython_pid << "\n" << flush;
pid_t result = waitpid(_p3dpython_pid, &status, WNOHANG);
while (result != _p3dpython_pid) {
if (result == -1) {
perror("waitpid");
break;
}
struct timeval now;
gettimeofday(&now, NULL);
double now_secs = now.tv_sec + now.tv_usec / 1000000.0;
double elapsed = now_secs - start_secs;
if (elapsed > max_wait_secs) {
// Tired of waiting. Kill the process.
nout << "Force-killing python process, pid " << _p3dpython_pid
<< "\n" << flush;
kill(_p3dpython_pid, SIGKILL);
start_secs = now_secs;
}
// Yield the timeslice and wait some more.
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 1;
select(0, NULL, NULL, NULL, &tv);
result = waitpid(_p3dpython_pid, &status, WNOHANG);
}
if (WIFEXITED(status)) {
nout << " exited normally, status = "
<< WEXITSTATUS(status) << "\n";
} else if (WIFSIGNALED(status)) {
nout << " signalled by " << WTERMSIG(status) << ", core = "
<< WCOREDUMP(status) << "\n";
} else if (WIFSTOPPED(status)) {
nout << " stopped by " << WSTOPSIG(status) << "\n";
}
#endif // _WIN32