1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 */
19
20 /*
21 * Modified by the GLib Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GLib Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GLib at ftp://ftp.gtk.org/pub/gtk/.
25 */
26
27 #include "config.h"
28
29 #include <sys/types.h>
30 #ifdef HAVE_UNISTD_H
31 #include <unistd.h>
32 #endif
33 #include <stdlib.h>
34
35 #include <glib.h>
36
37 #ifdef G_OS_WIN32
38 #include <windows.h>
39 #endif
40
41 #ifdef G_OS_WIN32
42 #define GPID_FORMAT "%p"
43 #else
44 #define GPID_FORMAT "%d"
45 #endif
46
47 GMainLoop *main_loop;
48 gint alive;
49
50 #ifdef G_OS_WIN32
51 char *argv0;
52 #endif
53
54 GPid
get_a_child(gint ttl)55 get_a_child (gint ttl)
56 {
57 GPid pid;
58
59 #ifdef G_OS_WIN32
60 STARTUPINFO si;
61 PROCESS_INFORMATION pi;
62 gchar *cmdline;
63
64 memset (&si, 0, sizeof (si));
65 si.cb = sizeof (&si);
66 memset (&pi, 0, sizeof (pi));
67
68 cmdline = g_strdup_printf( "child-test -c%d", ttl);
69
70 if (!CreateProcess (argv0, cmdline, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi))
71 g_error ("CreateProcess failed: %s\n", g_win32_error_message (GetLastError ()));
72
73 g_free(cmdline);
74
75 CloseHandle (pi.hThread);
76 pid = pi.hProcess;
77
78 return pid;
79 #else
80 pid = fork ();
81 if (pid < 0)
82 exit (1);
83
84 if (pid > 0)
85 return pid;
86
87 sleep (ttl);
88 _exit (0);
89 #endif /* G_OS_WIN32 */
90 }
91
92 gboolean
child_watch_callback(GPid pid,gint status,gpointer data)93 child_watch_callback (GPid pid, gint status, gpointer data)
94 {
95 #ifdef VERBOSE
96 gint ttl = GPOINTER_TO_INT (data);
97
98 g_print ("child " GPID_FORMAT " (ttl %d) exited, status %d\n", pid, ttl, status);
99 #endif
100
101 g_spawn_close_pid (pid);
102
103 if (--alive == 0)
104 g_main_loop_quit (main_loop);
105
106 return TRUE;
107 }
108
109 static gboolean
quit_loop(gpointer data)110 quit_loop (gpointer data)
111 {
112 GMainLoop *main_loop = data;
113
114 g_main_loop_quit (main_loop);
115
116 return TRUE;
117 }
118
119 #ifdef TEST_THREAD
120 static gpointer
test_thread(gpointer data)121 test_thread (gpointer data)
122 {
123 GMainLoop *new_main_loop;
124 GSource *source;
125 GPid pid;
126 gint ttl = GPOINTER_TO_INT (data);
127
128 new_main_loop = g_main_loop_new (NULL, FALSE);
129
130 pid = get_a_child (ttl);
131 source = g_child_watch_source_new (pid);
132 g_source_set_callback (source, (GSourceFunc) child_watch_callback, data, NULL);
133 g_source_attach (source, g_main_loop_get_context (new_main_loop));
134 g_source_unref (source);
135
136 #ifdef VERBOSE
137 g_print ("whee! created pid: " GPID_FORMAT " (ttl %d)\n", pid, ttl);
138 #endif
139
140 g_main_loop_run (new_main_loop);
141
142 return NULL;
143 }
144 #endif
145
146 int
main(int argc,char * argv[])147 main (int argc, char *argv[])
148 {
149 #ifndef TEST_THREAD
150 GPid pid;
151 #endif
152 #ifdef G_OS_WIN32
153 argv0 = argv[0];
154 if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'c')
155 {
156 int ttl = atoi (argv[1] + 2);
157 Sleep (ttl * 1000);
158 /* Exit on purpose with STILL_ACTIVE (which isn't a very common
159 * exit status) to verify that g_child_watch_check() in gmain.c
160 * doesn't believe a child still to be active if it happens to
161 * exit with that status.
162 */
163 exit (STILL_ACTIVE);
164 }
165 #endif
166 /* Only run the test, if threads are enabled and a default thread
167 * implementation is available.
168 */
169 #if defined(G_THREADS_ENABLED) && ! defined(G_THREADS_IMPL_NONE)
170 #ifdef TEST_THREAD
171 g_thread_init (NULL);
172 #endif
173 main_loop = g_main_loop_new (NULL, FALSE);
174
175 #ifdef G_OS_WIN32
176 system ("ipconfig /all");
177 #else
178 system ("/bin/true");
179 #endif
180
181 alive = 2;
182 g_timeout_add (30000, quit_loop, main_loop);
183
184 #ifdef TEST_THREAD
185 g_thread_create (test_thread, GINT_TO_POINTER (10), FALSE, NULL);
186 g_thread_create (test_thread, GINT_TO_POINTER (20), FALSE, NULL);
187 #else
188 pid = get_a_child (10);
189 g_child_watch_add (pid, (GChildWatchFunc) child_watch_callback,
190 GINT_TO_POINTER (10));
191 pid = get_a_child (20);
192 g_child_watch_add (pid, (GChildWatchFunc) child_watch_callback,
193 GINT_TO_POINTER (20));
194 #endif
195
196 g_main_loop_run (main_loop);
197
198 if (alive > 0)
199 {
200 g_warning ("%d children still alive\n", alive);
201 return 1;
202 }
203
204 #endif
205 return 0;
206 }
207