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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2013-09-24 23:08:15 +0200
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2013-10-04 22:29:51 +0200
commit7b7bab1391a3b16fff7e325e2c8a36b68eacba90 (patch)
tree848fcc756eec599c6b5b9137207a5c8c634d7d64 /sysdeps/mach/hurd
parentd39baad11e5092b56621902f8406c64c092a90dc (diff)
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Add fork hooks for pthread_atfork
pthread_atfork needs application callbacks to be called outside any locking.
Diffstat (limited to 'sysdeps/mach/hurd')
-rw-r--r--sysdeps/mach/hurd/fork.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/fork.c b/sysdeps/mach/hurd/fork.c
index ab11babffe..321421fbbc 100644
--- a/sysdeps/mach/hurd/fork.c
+++ b/sysdeps/mach/hurd/fork.c
@@ -34,6 +34,11 @@
symbol_set_declare (_hurd_fork_locks)
+/* Application callbacks registered through pthread_atfork. */
+DEFINE_HOOK (_hurd_atfork_prepare_hook, (void));
+DEFINE_HOOK (_hurd_atfork_child_hook, (void));
+DEFINE_HOOK (_hurd_atfork_parent_hook, (void));
+
/* Things that want to be called before we fork, to prepare the parent for
task_create, when the new child task will inherit our address space. */
DEFINE_HOOK (_hurd_fork_prepare_hook, (void));
@@ -62,6 +67,8 @@ __fork (void)
error_t err;
struct hurd_sigstate *volatile ss;
+ RUN_HOOK (_hurd_atfork_prepare_hook, ());
+
ss = _hurd_self_sigstate ();
__spin_lock (&ss->critical_section_lock);
@@ -695,6 +702,14 @@ __fork (void)
_hurd_critical_section_unlock (ss);
+ if (!err)
+ {
+ if (pid != 0)
+ RUN_HOOK (_hurd_atfork_parent_hook, ());
+ else
+ RUN_HOOK (_hurd_atfork_child_hook, ());
+ }
+
return err ? __hurd_fail (err) : pid;
}
libc_hidden_def (__fork)