diff options
Diffstat (limited to 'Python/thread.c')
| -rw-r--r-- | Python/thread.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/Python/thread.c b/Python/thread.c index 9a4dc251f9..b21e53b6cd 100644 --- a/Python/thread.c +++ b/Python/thread.c @@ -381,4 +381,35 @@ PyThread_delete_key_value(int key) PyThread_release_lock(keymutex); } +/* Forget everything not associated with the current thread id. + * This function is called from PyOS_AfterFork(). It is necessary + * because other thread ids which were in use at the time of the fork + * may be reused for new threads created in the forked process. + */ +void +PyThread_ReInitTLS(void) +{ + long id = PyThread_get_thread_ident(); + struct key *p, **q; + + if (!keymutex) + return; + + /* As with interpreter_lock in PyEval_ReInitThreads() + we just create a new lock without freeing the old one */ + keymutex = PyThread_allocate_lock(); + + /* Delete all keys which do not match the current thread id */ + q = &keyhead; + while ((p = *q) != NULL) { + if (p->id != id) { + *q = p->next; + free((void *)p); + /* NB This does *not* free p->value! */ + } + else + q = &p->next; + } +} + #endif /* Py_HAVE_NATIVE_TLS */ |