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src: add total_available_size to v8 statistics 

v8 introduced the new flag `total_available_size` in version 4.4
and upwards. This flag is now available on `v8.getHeapStatistics`
with the name `total_available_size`. It contains the total
available heap size of v8.

Introduced with commit: v8/v8-git-mirror@0a1352a7

PR-URL: https://github.com/nodejs/io.js/pull/2348
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
pull/2320/merge
Roman Klauke 2015-08-11 20:06:41 +02:00 committed by Ben Noordhuis
parent ae05807f04
commit ad7f74453d
4 changed files with 7 additions and 2 deletions
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1
doc/api/v8.markdown
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@ -15,6 +15,7 @@ Returns an object with the following properties
total_heap_size: 7326976,
total_heap_size_executable: 4194304,
total_physical_size: 7326976,
total_available_size: 1152656,
used_heap_size: 3476208,
heap_size_limit: 1535115264
}

2
lib/v8.js
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@ -22,6 +22,7 @@ const heapStatisticsBuffer =
const kTotalHeapSizeIndex = v8binding.kTotalHeapSizeIndex;
const kTotalHeapSizeExecutableIndex = v8binding.kTotalHeapSizeExecutableIndex;
const kTotalPhysicalSizeIndex = v8binding.kTotalPhysicalSizeIndex;
const kTotalAvailableSize = v8binding.kTotalAvailableSize;
const kUsedHeapSizeIndex = v8binding.kUsedHeapSizeIndex;
const kHeapSizeLimitIndex = v8binding.kHeapSizeLimitIndex;
@ -34,6 +35,7 @@ exports.getHeapStatistics = function() {
'total_heap_size': buffer[kTotalHeapSizeIndex],
'total_heap_size_executable': buffer[kTotalHeapSizeExecutableIndex],
'total_physical_size': buffer[kTotalPhysicalSizeIndex],
'total_available_size': buffer[kTotalAvailableSize],
'used_heap_size': buffer[kUsedHeapSizeIndex],
'heap_size_limit': buffer[kHeapSizeLimitIndex]
};

5
src/node_v8.cc
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@ -26,8 +26,9 @@ using v8::Value;
V(0, total_heap_size, kTotalHeapSizeIndex) \
V(1, total_heap_size_executable, kTotalHeapSizeExecutableIndex) \
V(2, total_physical_size, kTotalPhysicalSizeIndex) \
V(3, used_heap_size, kUsedHeapSizeIndex) \
V(4, heap_size_limit, kHeapSizeLimitIndex)
V(3, total_available_size, kTotalAvailableSize) \
V(4, used_heap_size, kUsedHeapSizeIndex) \
V(5, heap_size_limit, kHeapSizeLimitIndex)
#define V(a, b, c) +1
static const size_t kHeapStatisticsPropertiesCount =

1
test/parallel/test-v8-stats.js
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@ -6,6 +6,7 @@ var v8 = require('v8');
var s = v8.getHeapStatistics();
var keys = [
'heap_size_limit',
'total_available_size',
'total_heap_size',
'total_heap_size_executable',
'total_physical_size',