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revert patch from bug #4532 until CPU consumption problem can be resolved

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6111 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kevin P. Fleming
2005-07-12 18:57:20 +00:00
parent 4bcf6f7806
commit 37184c4244
1 changed files with 18 additions and 38 deletions
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56
res/res_musiconhold.c
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@@ -402,44 +402,19 @@ static int spawn_mp3(struct mohclass *class)
ast_log(LOG_WARNING, "Fork failed: %s\n", strerror(errno));
return -1;
}
if (class->pid != 0) { /* parent */
close(fds[1]);
return fds[0];
} else {
/* Child */
int i;
/*
* On BSD systems with userland pthreads libraries, we need
* to call fcntl() _before_ close() to avoid resetting
* O_NONBLOCK on the internal descriptors.
* It should not harm in other systems.
*
* After that, close the descriptors not needed in the child.
* It is also important that we do not share descriptors
* with the child process or it could change their blocking
* state and give trouble in the thread scheduling.
* Here, parent and child are connected only through the
* endpoints of a pipe, so they share no descriptors.
*/
for (i=0; i < getdtablesize(); i++) {
long fl = fcntl(i, F_GETFL);
if (fl != -1 && i != fds[1]) {
/* open and must be closed in the child */
fcntl(i, F_SETFL, O_NONBLOCK | fl);
close(i);
if (!class->pid) {
int x;
close(fds[0]);
/* Stdout goes to pipe */
dup2(fds[1], STDOUT_FILENO);
/* Close unused file descriptors */
for (x=3;x<8192;x++) {
if (-1 != fcntl(x, F_GETFL)) {
close(x);
}
}
/* Stdout in the child goes to pipe */
dup2(fds[1], STDOUT_FILENO);
/* Child */
chdir(class->dir);
/*
* mpg123 may fork children to be more responsive, and we
* want to kill them all when we exit. To do so we set
* the process group id of mpg123 and children to a different
* value than the asterisk process so we can kill all at once.
* So remember, class->pid is really class->pgid!
*/
setpgid(0, getpid());
if (ast_test_flag(class, MOH_CUSTOM)) {
execv(argv[0], argv);
} else {
@@ -450,9 +425,14 @@ static int spawn_mp3(struct mohclass *class)
/* Check PATH as a last-ditch effort */
execvp("mpg123", argv);
}
ast_log(LOG_WARNING, "Exec failed: %s\n", strerror(errno));
close(fds[1]);
exit(1);
return 0; /* unreached */
} else {
/* Parent */
close(fds[1]);
}
return fds[0];
}
static void *monmp3thread(void *data)
@@ -531,7 +511,7 @@ static void *monmp3thread(void *data)
close(class->srcfd);
class->srcfd = -1;
if (class->pid) {
killpg(class->pid, SIGKILL); /* pgid! */
kill(class->pid, SIGKILL);
class->pid = 0;
}
} else
@@ -977,7 +957,7 @@ static void ast_moh_destroy(void)
stime = time(NULL) + 2;
pid = moh->pid;
moh->pid = 0;
killpg(pid, SIGKILL); /* pgid! */
kill(pid, SIGKILL);
while ((ast_wait_for_input(moh->srcfd, 100) > -1) && (bytes = read(moh->srcfd, buff, 8192)) && time(NULL) < stime) {
tbytes = tbytes + bytes;
}