diff options
| author | Daniel Drake <dsd@gentoo.org> | 2008-05-25 22:59:09 +0100 |
|---|---|---|
| committer | Daniel Drake <dsd@gentoo.org> | 2008-05-25 22:59:09 +0100 |
| commit | 4cd249388e4ed2ca03f1263984ab67df5030bb65 (patch) | |
| tree | 409dbe0d9d71922872937ee461abddf5478d4ed2 /libusb/io.c | |
| parent | 7c525480ab3c4db9205bfe30bb0d2bef9096c444 (diff) | |
| download | libusb-4cd249388e4ed2ca03f1263984ab67df5030bb65.tar.gz | |
Take lock before raising event waiters condition
This avoids a race between the user checking for active event handler
and then blocking on the condition variable
Diffstat (limited to 'libusb/io.c')
| -rw-r--r-- | libusb/io.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libusb/io.c b/libusb/io.c index 6a04a2e..6ed19c1 100644 --- a/libusb/io.c +++ b/libusb/io.c @@ -1045,7 +1045,9 @@ void usbi_handle_transfer_completion(struct usbi_transfer *itransfer, * this point. */ if (flags & LIBUSB_TRANSFER_FREE_TRANSFER) libusb_free_transfer(transfer); + pthread_mutex_lock(&event_waiters_lock); pthread_cond_broadcast(&event_waiters_cond); + pthread_mutex_unlock(&event_waiters_lock); } /* Similar to usbi_handle_transfer_completion() but exclusively for transfers |