81 lines
2 KiB
C++
81 lines
2 KiB
C++
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// Copyright (c) 2013 GitHub, Inc. All rights reserved.
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// Copyright (c) 2012, Ben Noordhuis <info@bnoordhuis.nl>.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "vendor/node/src/node.h"
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namespace {
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using v8::Arguments;
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using v8::FunctionTemplate;
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using v8::Handle;
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using v8::HandleScope;
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using v8::Object;
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using v8::String;
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using v8::Undefined;
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using v8::V8;
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using v8::Value;
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typedef enum { STOP, RUN, PAUSE } gc_state_t;
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int64_t interval;
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gc_state_t state;
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gc_state_t prev_state;
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uv_timer_t timer_handle;
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uv_check_t check_handle;
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uv_prepare_t prepare_handle;
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void Timer(uv_timer_t*, int) {
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if (V8::IdleNotification()) state = PAUSE;
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}
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void Check(uv_check_t*, int) {
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prev_state = state;
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}
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void Prepare(uv_prepare_t*, int) {
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if (state == PAUSE && prev_state == PAUSE) state = RUN;
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if (state == RUN) uv_timer_start(&timer_handle, Timer, interval, 0);
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}
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Handle<Value> Stop(const Arguments& args) {
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state = STOP;
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uv_timer_stop(&timer_handle);
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uv_check_stop(&check_handle);
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uv_prepare_stop(&prepare_handle);
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return Undefined();
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}
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Handle<Value> Start(const Arguments& args) {
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HandleScope scope;
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Stop(args);
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interval = args[0]->IsNumber() ? args[0]->IntegerValue() : 0;
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if (interval <= 0) interval = 5000; // Default to 5 seconds.
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state = RUN;
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uv_check_start(&check_handle, Check);
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uv_prepare_start(&prepare_handle, Prepare);
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return Undefined();
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}
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void Init(Handle<Object> obj) {
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HandleScope scope;
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uv_timer_init(uv_default_loop(), &timer_handle);
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uv_check_init(uv_default_loop(), &check_handle);
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uv_prepare_init(uv_default_loop(), &prepare_handle);
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uv_unref(reinterpret_cast<uv_handle_t*>(&timer_handle));
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uv_unref(reinterpret_cast<uv_handle_t*>(&check_handle));
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uv_unref(reinterpret_cast<uv_handle_t*>(&prepare_handle));
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obj->Set(String::New("stop"), FunctionTemplate::New(Stop)->GetFunction());
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obj->Set(String::New("start"), FunctionTemplate::New(Start)->GetFunction());
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}
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NODE_MODULE(atom_common_idle_gc, Init)
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} // namespace
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