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fixes #1816

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This commit is contained in:
Araq 2015-01-02 03:32:45 +01:00
commit 194b14a182
2 changed files with 39 additions and 3 deletions
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7
lib/system/channels.nim
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@ -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 =