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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-09-24 23:08:15 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-10-04 22:29:51 +0200 |
| commit | 7b7bab1391a3b16fff7e325e2c8a36b68eacba90 (patch) | |
| tree | 848fcc756eec599c6b5b9137207a5c8c634d7d64 | |
| parent | d39baad11e5092b56621902f8406c64c092a90dc (diff) | |
| download | glibc-7b7bab1391a3b16fff7e325e2c8a36b68eacba90.zip glibc-7b7bab1391a3b16fff7e325e2c8a36b68eacba90.tar.gz glibc-7b7bab1391a3b16fff7e325e2c8a36b68eacba90.tar.bz2 | |
Add fork hooks for pthread_atfork
pthread_atfork needs application callbacks to be called outside any locking.
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/fork.c | 15 |
2 files changed, 22 insertions, 0 deletions
@@ -1,3 +1,10 @@ +2013-10-04 Samuel Thibault <samuel.thibault@ens-lyon.org> + + * sysdeps/mach/hurd/fork.c (_hurd_atfork_prepare_hook, + _hurd_atfork_child_hook, _hurd_atfork_parent_hook): New hooks. + (__fork): Call _hurd_atfork_prepare_hook hooks before all locking, call + _hurd_atfork_parent_hook or _hurd_atfork_child_hook after all unlocking. + 2013-10-04 Ryan S. Arnold <ryan.arnold@linaro.org> * misc/swapon.c (swapon): Update definition, adding FLAGS parameter to diff --git a/sysdeps/mach/hurd/fork.c b/sysdeps/mach/hurd/fork.c index ab11bab..321421f 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) |