diff options
Diffstat (limited to 'libobjc/thr.c')
| -rw-r--r-- | libobjc/thr.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/libobjc/thr.c b/libobjc/thr.c index f1c957a..437ee57 100644 --- a/libobjc/thr.c +++ b/libobjc/thr.c @@ -531,4 +531,33 @@ objc_condition_signal(objc_condition_t condition) return __objc_condition_signal(condition); } +/* Make the objc thread system aware that a thread which is managed + (started, stopped) by external code could access objc facilities + from now on. This is used when you are interfacing with some + external non-objc-based environment/system - you must call + objc_thread_add() before an alien thread makes any calls to + Objective-C. Do not cause the _objc_became_multi_threaded hook to + be executed. */ +void +objc_thread_add(void) +{ + objc_mutex_lock(__objc_runtime_mutex); + __objc_is_multi_threaded = 1; + __objc_runtime_threads_alive++; + objc_mutex_unlock(__objc_runtime_mutex); +} + +/* Make the objc thread system aware that a thread managed (started, + stopped) by some external code will no longer access objc and thus + can be forgotten by the objc thread system. Call + objc_thread_remove() when your alien thread is done with making + calls to Objective-C. */ +void +objc_thread_remove(void) +{ + objc_mutex_lock(__objc_runtime_mutex); + __objc_runtime_threads_alive--; + objc_mutex_unlock(__objc_runtime_mutex); +} + /* End of File */ |