o5r/plan9port
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restore old plan 9 property that when the

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last thread exits the main proc, the remaining
program ends up in the background and the
program appears to have exited.
This commit is contained in:
rsc 2004-12-28 22:36:24 +00:00
parent 07bda1263e
commit 1d2533d010
6 changed files with 36 additions and 8 deletions
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21
src/libthread/daemonize.c
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@ -9,10 +9,13 @@ static int threadpassfd;
static void
child(void)
{
int status;
if(wait(&status) == sigpid)
if(WIFEXITED(status))
_exit(WEXITSTATUS(status));
int status, pid;
pid = wait(&status);
if(pid < 0)
fprint(2, "wait: %r\n");
else if(WIFEXITED(status))
_exit(WEXITSTATUS(status));
print("pid %d if %d %d\n", pid, WIFEXITED(status), WEXITSTATUS(status));
_exit(97);
}
@ -51,6 +54,7 @@ _threadsetupdaemonize(void)
if(fcntl(p[0], F_SETFD, 1) < 0 || fcntl(p[1], F_SETFD, 1) < 0)
sysfatal("passer pipe pipe fcntl: %r");
signal(SIGCHLD, sigpass);
switch(pid = fork()){
case -1:
sysfatal("passer fork: %r");
@ -58,6 +62,7 @@ _threadsetupdaemonize(void)
close(p[1]);
break;
case 0:
signal(SIGCHLD, SIG_DFL);
rfork(RFNOTEG);
close(p[0]);
threadpassfd = p[1];
@ -89,7 +94,9 @@ _threadsetupdaemonize(void)
void
threaddaemonize(void)
{
write(threadpassfd, "0", 1);
close(threadpassfd);
threadpassfd = -1;
if(threadpassfd >= 0){
write(threadpassfd, "0", 1);
close(threadpassfd);
threadpassfd = -1;
}
}