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[Win] Poll events with GetQueuedCompletionStatus, fixes #41.

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Cheng Zhao 2013-07-23 19:19:11 +08:00
commit 85e4e99e7f
1 changed files with 36 additions and 3 deletions
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39
common/node_bindings_win.cc
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@ -7,8 +7,11 @@
#include <windows.h>
#include "base/logging.h"
#include "vendor/node/src/node.h"
#include "vendor/node/src/node_internals.h"
extern "C" {
#include "vendor/node/deps/uv/include/uv-private/ngx-queue.h"
#include "vendor/node/deps/uv/src/win/internal.h"
}
namespace atom {
@ -20,7 +23,37 @@ NodeBindingsWin::~NodeBindingsWin() {
}
void NodeBindingsWin::PollEvents() {
Sleep(50);
// Unlike Unix, in which we can just rely on one backend fd to determine
// whether we should iterate libuv loop, on Window, IOCP is just one part
// of the libuv loop, we should also check whether we have other types of
// events.
bool block = uv_loop_->idle_handles == NULL &&
uv_loop_->pending_reqs_tail == NULL &&
uv_loop_->endgame_handles == NULL &&
!uv_loop_->stop_flag &&
(uv_loop_->active_handles > 0 ||
!ngx_queue_empty(&uv_loop_->active_reqs));
// When there is no other types of events, we block on the IOCP.
if (block) {
DWORD bytes, timeout;
ULONG_PTR key;
OVERLAPPED* overlapped;
timeout = uv_get_poll_timeout(uv_loop_);
GetQueuedCompletionStatus(uv_loop_->iocp,
&bytes,
&key,
&overlapped,
timeout);
// Give the event back so libuv can deal with it.
if (overlapped != NULL)
PostQueuedCompletionStatus(uv_loop_->iocp,
bytes,
key,
overlapped);
}
}
// static