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 df46922e4..6e0c5b8c2 100644 --- a/lib/system/channels.nim +++ b/lib/system/channels.nim @@ -226,15 +226,16 @@ proc recv*[TMsg](c: var TChannel[TMsg]): TMsg = llRecv(q, addr(result), cast[PNimType](getTypeInfo(result))) releaseSys(q.lock) -proc tryRecv*[TMsg](c: var TChannel[TMsg]): tuple[dataAvaliable: bool, +proc tryRecv*[TMsg](c: var TChannel[TMsg]): tuple[dataAvailable: bool, msg: TMsg] = ## try to receives a message from the channel `c` if available. Otherwise ## it returns ``(false, default(msg))``. var q = cast[PRawChannel](addr(c)) - if q.mask != ChannelDeadMask: - lockChannel(q): + if q.mask != ChannelDeadMask: + if tryAcquireSys(q.lock): llRecv(q, addr(result.msg), cast[PNimType](getTypeInfo(result.msg))) result.dataAvaliable = true + releaseSys(q.lock) proc peek*[TMsg](c: var TChannel[TMsg]): int = ## returns the current number of messages in the channel `c`. Returns -1 |