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| author | Rickard Green <[email protected]> | 2010-06-01 13:53:07 +0000 |
|---|---|---|
| committer | Erlang/OTP <[email protected]> | 2010-06-01 13:53:07 +0000 |
| commit | 00c65e1556ac9b70683c01136ee933bbb6d4d84a (patch) | |
| tree | 64bfa5de6a8410f787d18d0011af3de73a1e86e3 /erts/lib_src | |
| parent | 0b81970d641577dfbcb7d0ba31090c4e362cf860 (diff) | |
| download | otp-00c65e1556ac9b70683c01136ee933bbb6d4d84a.tar.gz otp-00c65e1556ac9b70683c01136ee933bbb6d4d84a.tar.bz2 otp-00c65e1556ac9b70683c01136ee933bbb6d4d84a.zip | |
OTP-8662 Fix ethr_rwmutex_tryrlock
ethr_rwmutex_tryrlock() acquired and refused to acquire a lock with
inverted logic. The lock was however never acquired in a thread unsafe
manner. (Thanks to JR Zhang for noting this issue)
Diffstat (limited to 'erts/lib_src')
| -rw-r--r-- | erts/lib_src/common/ethread.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/erts/lib_src/common/ethread.c b/erts/lib_src/common/ethread.c index a4ec4c448b..9c88233934 100644 --- a/erts/lib_src/common/ethread.c +++ b/erts/lib_src/common/ethread.c @@ -3216,7 +3216,7 @@ ethr_rwmutex_tryrlock(ethr_rwmutex *rwmtx) res = ethr_mutex_trylock__(&rwmtx->mtx); if (res != 0) return res; - if (!rwmtx->waiting_writers) { + if (rwmtx->waiting_writers) { res = ethr_mutex_unlock__(&rwmtx->mtx); if (res == 0) return EBUSY; |