diff options
Diffstat (limited to 'lib/system/channels_builtin.nim')
| -rw-r--r-- | lib/system/channels_builtin.nim | 41 |
1 files changed, 23 insertions, 18 deletions
diff --git a/lib/system/channels_builtin.nim b/lib/system/channels_builtin.nim index c7a445766..02b4d8cbf 100644 --- a/lib/system/channels_builtin.nim +++ b/lib/system/channels_builtin.nim @@ -26,7 +26,7 @@ ## The following is a simple example of two different ways to use channels: ## blocking and non-blocking. ## -## .. code-block :: Nim +## ```Nim ## # Be sure to compile with --threads:on. ## # The channels and threads modules are part of system and should not be ## # imported. @@ -87,18 +87,20 @@ ## ## # Clean up the channel. ## chan.close() +## ``` ## ## Sample output ## ------------- ## The program should output something similar to this, but keep in mind that -## exact results may vary in the real world:: -## Hello World! -## Pretend I'm doing useful work... -## Pretend I'm doing useful work... -## Pretend I'm doing useful work... -## Pretend I'm doing useful work... -## Pretend I'm doing useful work... -## Another message +## exact results may vary in the real world: +## +## Hello World! +## Pretend I'm doing useful work... +## Pretend I'm doing useful work... +## Pretend I'm doing useful work... +## Pretend I'm doing useful work... +## Pretend I'm doing useful work... +## Another message ## ## Passing Channels Safely ## ----------------------- @@ -112,7 +114,7 @@ ## using e.g. `system.allocShared0` and pass these pointers through thread ## arguments: ## -## .. code-block :: Nim +## ```Nim ## proc worker(channel: ptr Channel[string]) = ## let greeting = channel[].recv() ## echo greeting @@ -134,10 +136,13 @@ ## deallocShared(channel) ## ## localChannelExample() # "Hello from the main thread!" +## ``` when not declared(ThisIsSystem): {.error: "You must not import this module explicitly".} +import std/private/syslocks + type pbytes = ptr UncheckedArray[byte] RawChannel {.pure, final.} = object ## msg queue for a thread @@ -182,8 +187,8 @@ when not usesDestructors: proc storeAux(dest, src: pointer, n: ptr TNimNode, t: PRawChannel, mode: LoadStoreMode) {.benign.} = var - d = cast[ByteAddress](dest) - s = cast[ByteAddress](src) + d = cast[int](dest) + s = cast[int](src) case n.kind of nkSlot: storeAux(cast[pointer](d +% n.offset), cast[pointer](s +% n.offset), n.typ, t, mode) @@ -202,8 +207,8 @@ when not usesDestructors: cast[pointer](cast[int](p) +% x) var - d = cast[ByteAddress](dest) - s = cast[ByteAddress](src) + d = cast[int](dest) + s = cast[int](src) sysAssert(mt != nil, "mt == nil") case mt.kind of tyString: @@ -242,14 +247,14 @@ when not usesDestructors: x[] = alloc0(t.region, align(GenericSeqSize, mt.base.align) +% seq.len *% mt.base.size) else: unsureAsgnRef(x, newSeq(mt, seq.len)) - var dst = cast[ByteAddress](cast[PPointer](dest)[]) + var dst = cast[int](cast[PPointer](dest)[]) var dstseq = cast[PGenericSeq](dst) dstseq.len = seq.len dstseq.reserved = seq.len for i in 0..seq.len-1: storeAux( cast[pointer](dst +% align(GenericSeqSize, mt.base.align) +% i *% mt.base.size), - cast[pointer](cast[ByteAddress](s2) +% align(GenericSeqSize, mt.base.align) +% + cast[pointer](cast[int](s2) +% align(GenericSeqSize, mt.base.align) +% i *% mt.base.size), mt.base, t, mode) if mode != mStore: dealloc(t.region, s2) @@ -360,8 +365,8 @@ proc sendImpl(q: PRawChannel, typ: PNimType, msg: pointer, noBlock: bool): bool rawSend(q, msg, typ) q.elemType = typ - releaseSys(q.lock) signalSysCond(q.cond) + releaseSys(q.lock) result = true proc send*[TMsg](c: var Channel[TMsg], msg: sink TMsg) {.inline.} = @@ -389,7 +394,7 @@ proc llRecv(q: PRawChannel, res: pointer, typ: PNimType) = q.ready = false if typ != q.elemType: releaseSys(q.lock) - sysFatal(ValueError, "cannot receive message of wrong type") + raise newException(ValueError, "cannot receive message of wrong type") rawRecv(q, res, typ) if q.maxItems > 0 and q.count == q.maxItems - 1: # Parent thread is awaiting in send. Wake it up. |