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Diffstat (limited to 'libc/bionic/fork.c')
-rw-r--r-- | libc/bionic/fork.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/libc/bionic/fork.c b/libc/bionic/fork.c new file mode 100644 index 0000000..1c6a4ba --- /dev/null +++ b/libc/bionic/fork.c @@ -0,0 +1,48 @@ +/* + * Copyright (C) 2008 The Android Open Source Project + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +#include <unistd.h> +#include "pthread_internal.h" + +extern int __fork(void); + +int fork(void) +{ + int ret; + + /* Posix mandates that the timers of a fork child process be + * disarmed, but not destroyed. To avoid a race condition, we're + * going to stop all timers now, and only re-start them in case + * of error, or in the parent process + */ + __timer_table_start_stop(1); + ret = __fork(); + if (ret != 0) { /* not a child process */ + __timer_table_start_stop(0); + } + return ret; +} |