Fixed bug #45423 (fastcgi parent process doesn't invoke php_module_shutdown before shutdown) (basant dot kukreja at sun dot com)

NEWS

@@ -13,6 +13,8 @@ PHP                                                                        NEWS
   accept lengths of 1024). (Felipe, andrew at lifescale dot com)
 - Fixed bug #45449 (filesize() regression using ftp wrapper). 
   (crrodriguez at suse dot de)
+- Fixed bug #45423 (fastcgi parent process doesn't invoke php_module_shutdown
+  before shutdown) (basant dot kukreja at sun dot com)
 - Fixed bug #45352 (Segmentation fault because of tick function on second
   request). (Dmitry)
 - Fixed bug #45312 (Segmentation fault on second request for array functions).

sapi/cgi/cgi_main.c

@@ -103,6 +103,12 @@ static int children = 0;
  */
 static int parent = 1;
 
+/* Did parent received exit signals SIG_TERM/SIG_INT/SIG_QUIT */
+static int exit_signal = 0;
+
+/* Is Parent waiting for children to exit */
+static int parent_waiting = 0;
+
 /**
  * Process group
  */
@@ -1135,7 +1141,7 @@ static void init_request_info(TSRMLS_D)
 }
 /* }}} */
 
-#if PHP_FASTCGI
+#if PHP_FASTCGI && !defined(PHP_WIN32)
 /**
  * Clean up child processes upon exit
  */
@@ -1145,15 +1151,16 @@ void fastcgi_cleanup(int signal)
 	fprintf(stderr, "FastCGI shutdown, pid %d\n", getpid());
 #endif
 
-#ifndef PHP_WIN32
 	sigaction(SIGTERM, &old_term, 0);
 
 	/* Kill all the processes in our process group */
 	kill(-pgroup, SIGTERM);
-#endif
 
-	/* We should exit at this point, but MacOSX doesn't seem to */
-	exit(0);
+	if (parent && parent_waiting) {
+		exit_signal = 1;
+	} else {
+		exit(0);
+	}
 }
 #endif
 
@@ -1520,7 +1527,7 @@ consult the installation file that came with this distribution, or visit \n\
 		}
 
 		if (fcgi_in_shutdown()) {
-			exit(0);
+			goto parent_out;
 		}
 
 		while (parent) {
@@ -1557,9 +1564,25 @@ consult the installation file that came with this distribution, or visit \n\
 #ifdef DEBUG_FASTCGI
 				fprintf(stderr, "Wait for kids, pid %d\n", getpid());
 #endif
-				while (wait(&status) < 0) {
+				parent_waiting = 1;
+				while (1) {
+					if (wait(&status) >= 0) {
+						running--;
+						break;
+					} else if (exit_signal) {
+						break;
+					}						
+				}
+				if (exit_signal) {
+#if 0
+					while (running > 0) {
+						while (wait(&status) < 0) {
+						}
+						running--;
+					}
+#endif
+					goto parent_out;
 				}
-				running--;
 			}
 		}
 	} else {
@@ -2061,6 +2084,10 @@ out:
 	}
 #endif
 
+#ifndef PHP_WIN32
+parent_out:
+#endif
+
 	SG(server_context) = NULL;
 	php_module_shutdown(TSRMLS_C);
 	sapi_shutdown();

sapi/cgi/fastcgi.c

@@ -170,6 +170,20 @@ static void fcgi_signal_handler(int signo)
 	}
 }
 
+static void fcgi_setup_signals(void)
+{
+	struct sigaction new_sa, old_sa;
+
+	sigemptyset(&new_sa.sa_mask);
+	new_sa.sa_flags = 0;
+	new_sa.sa_handler = fcgi_signal_handler;
+	sigaction(SIGUSR1, &new_sa, NULL);
+	sigaction(SIGTERM, &new_sa, NULL);
+	sigaction(SIGPIPE, NULL, &old_sa);
+	if (old_sa.sa_handler == SIG_DFL) {
+		sigaction(SIGPIPE, &new_sa, NULL);
+	}
+}
 #endif
 
 int fcgi_in_shutdown(void)
@@ -224,18 +238,7 @@ int fcgi_init(void)
 		is_initialized = 1;
 		errno = 0;
 		if (getpeername(0, (struct sockaddr *)&sa, &len) != 0 && errno == ENOTCONN) {
-			struct sigaction new_sa, old_sa;
-
-			sigemptyset(&new_sa.sa_mask);
-			new_sa.sa_flags = 0;
-			new_sa.sa_handler = fcgi_signal_handler;
-			sigaction(SIGUSR1, &new_sa, NULL);
-			sigaction(SIGTERM, &new_sa, NULL);
-			sigaction(SIGPIPE, NULL, &old_sa);
-			if (old_sa.sa_handler == SIG_DFL) {
-				sigaction(SIGPIPE, &new_sa, NULL);
-			}
-
+			fcgi_setup_signals();
 			return is_fastcgi = 1;
 		} else {
 			return is_fastcgi = 0;
@@ -501,6 +504,8 @@ int fcgi_listen(const char *path, int backlog)
 	if (tcp) {
 		listen_socket = _open_osfhandle((long)listen_socket, 0);
 	}
+#else
+	fcgi_setup_signals();
 #endif
 	return listen_socket;
 }