diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/system/channels.nim | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/system/channels.nim b/lib/system/channels.nim index 3e5ca0795..d07d6eae1 100644 --- a/lib/system/channels.nim +++ b/lib/system/channels.nim @@ -232,9 +232,10 @@ proc tryRecv*[TMsg](c: var TChannel[TMsg]): tuple[dataAvailable: bool, ## it returns ``(false, default(msg))``. var q = cast[PRawChannel](addr(c)) if q.mask != ChannelDeadMask: - if tryAcquireSys(q.lock): - llRecv(q, addr(result.msg), cast[PNimType](getTypeInfo(result.msg))) - result.dataAvailable = true + if tryAcquireSys(q.lock): + if q.count > 0: + llRecv(q, addr(result.msg), cast[PNimType](getTypeInfo(result.msg))) + result.dataAvailable = true releaseSys(q.lock) proc peek*[TMsg](c: var TChannel[TMsg]): int = |