diff options
| author | Corinna Vinschen <corinna@vinschen.de> | 2021-04-30 21:56:31 +0300 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2021-04-30 22:07:26 +0300 |
| commit | e3b228f098c89bb4e382bb091a7888f3cc807454 (patch) | |
| tree | ac92dc3d62324f39492ddcf6de7d9a70e2e7a8a4 | |
| parent | 85d0081f0e5de0cf77d20c3777613fb3740e583e (diff) | |
never block when peekingtopic/mq_af_unix_fiddeling
| -rw-r--r-- | winsup/cygwin/posix_ipc.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/winsup/cygwin/posix_ipc.cc b/winsup/cygwin/posix_ipc.cc index 1f13c2298..1e5e40144 100644 --- a/winsup/cygwin/posix_ipc.cc +++ b/winsup/cygwin/posix_ipc.cc @@ -966,7 +966,8 @@ _mq_receive (mqd_t mqd, char *ptr, size_t maxlen, unsigned int *priop, } if (attr->mq_curmsgs == 0) /* queue is empty */ { - if (mqinfo->mqi_flags & O_NONBLOCK) + /* Don't block if O_NONBLOCK is set or when peeking */ + if ((mqinfo->mqi_flags & O_NONBLOCK) || (flags & _MQ_PEEK_PACKET)) { set_errno (EAGAIN); __leave; |