merge revision(s) 40534,41886,41903,41910: [Backport #8616]

	process.c: rb_daemon should not raise

	* process.c (rb_daemon): should not raise exceptions, since
  proc_daemon() will deal with errors.
	* process.c (fork_daemon): kill the other threads all and abandon the
	  kept mutexes.

	* process.c (fork_daemon): kill the other threads all and abandon the
	  kept mutexes.

	* process.c (rb_daemon): daemon(3) is implemented with fork(2).
	  Therefore it needs rb_thread_atfork(). (and revert r41903)


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@44766 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 16 deletions

diff --git a/process.c b/process.c
index 679d21dcf4..e3bee49ae7 100644
--- a/process.c
+++ b/process.c
@@ -4918,26 +4918,19 @@ rb_daemon(int nochdir, int noclose)
 #else
     int n;
 
-    switch (rb_fork(0, 0, 0, Qnil)) {
-      case -1:
-	rb_sys_fail("daemon");
-      case 0:
-	break;
-      default:
-	_exit(EXIT_SUCCESS);
+#define fork_daemon() \
+    switch (rb_fork(0, 0, 0, Qnil)) { \
+      case -1: return -1; \
+      case 0:  break; \
+      default: _exit(EXIT_SUCCESS); \
     }
 
-    proc_setsid();
+    fork_daemon();
+
+    if (setsid() < 0) return -1;
 
     /* must not be process-leader */
-    switch (rb_fork(0, 0, 0, Qnil)) {
-      case -1:
-	return -1;
-      case 0:
-	break;
-      default:
-	_exit(EXIT_SUCCESS);
-    }
+    fork_daemon();
 
     if (!nochdir)
 	err = chdir("/");