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nodejs/lib/v8.js
cjihrig 804e7aa9ab lib: use const to define constants
This commit replaces a number of var statements throughout
the lib code with const statements.

PR-URL: https://github.com/iojs/io.js/pull/541
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
2015-01-21 16:21:31 -05:00

45 lines
1.8 KiB
JavaScript

// Copyright (c) 2014, StrongLoop Inc.
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
'use strict';
const v8binding = process.binding('v8');
const smalloc = require('smalloc');
const heapStatisticsBuffer =
smalloc.alloc(v8binding.kHeapStatisticsBufferLength,
v8binding.kHeapStatisticsBufferType);
const kTotalHeapSizeIndex = v8binding.kTotalHeapSizeIndex;
const kTotalHeapSizeExecutableIndex = v8binding.kTotalHeapSizeExecutableIndex;
const kTotalPhysicalSizeIndex = v8binding.kTotalPhysicalSizeIndex;
const kUsedHeapSizeIndex = v8binding.kUsedHeapSizeIndex;
const kHeapSizeLimitIndex = v8binding.kHeapSizeLimitIndex;
exports.getHeapStatistics = function() {
var buffer = heapStatisticsBuffer;
v8binding.getHeapStatistics(buffer);
return {
'total_heap_size': buffer[kTotalHeapSizeIndex],
'total_heap_size_executable': buffer[kTotalHeapSizeExecutableIndex],
'total_physical_size': buffer[kTotalPhysicalSizeIndex],
'used_heap_size': buffer[kUsedHeapSizeIndex],
'heap_size_limit': buffer[kHeapSizeLimitIndex]
};
};
exports.setFlagsFromString = v8binding.setFlagsFromString;