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| author | Simon Marlow <marlowsd@gmail.com> | 2009-01-26 14:00:30 +0000 |
|---|---|---|
| committer | Simon Marlow <marlowsd@gmail.com> | 2009-01-26 14:00:30 +0000 |
| commit | 9f35f6715879b9e81ffd538c3049e2dd243f807e (patch) | |
| tree | 78abd89f5f5dddc042c9ae8914dc32d63ebba50e /includes | |
| parent | ff124db4ad2ea145a13c711d4da9e293fa82f58d (diff) | |
| download | haskell-9f35f6715879b9e81ffd538c3049e2dd243f807e.tar.gz | |
add comment for ASSERT_LOCK_HELD()
Diffstat (limited to 'includes')
| -rw-r--r-- | includes/OSThreads.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/includes/OSThreads.h b/includes/OSThreads.h index fd57f56606..d4dbc361e1 100644 --- a/includes/OSThreads.h +++ b/includes/OSThreads.h @@ -54,6 +54,11 @@ typedef pthread_key_t ThreadLocalKey; barf("RELEASE_LOCK: I do not own this lock: %s %d", __FILE__,__LINE__); \ } +// Note: this assertion calls pthread_mutex_lock() on a mutex that +// is already held by the calling thread. The mutex should therefore +// have been created with PTHREAD_MUTEX_ERRORCHECK, otherwise this +// assertion will hang. We always initialise mutexes with +// PTHREAD_MUTEX_ERRORCHECK when DEBUG is on (see rts/posix/OSThreads.h). #define ASSERT_LOCK_HELD(mutex) ASSERT(pthread_mutex_lock(mutex) == EDEADLK) #endif // CMINUSMINUS |