Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

lib: deprecate the smalloc module #1564

Merged
merged 1 commit into from
Apr 29, 2015
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
91 changes: 91 additions & 0 deletions lib/internal/smalloc.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,91 @@
'use strict';

const smalloc = process.binding('smalloc');
const kMaxLength = smalloc.kMaxLength;
const kMinType = smalloc.kMinType;
const kMaxType = smalloc.kMaxType;
const util = require('util');

exports.alloc = alloc;
exports.copyOnto = copyOnto;
exports.dispose = dispose;
exports.hasExternalData = hasExternalData;

// don't allow kMaxLength to accidentally be overwritten. it's a lot less
// apparent when a primitive is accidentally changed.
Object.defineProperty(exports, 'kMaxLength', {
enumerable: true, value: kMaxLength, writable: false
});

Object.defineProperty(exports, 'Types', {
enumerable: true, value: Object.freeze(smalloc.types), writable: false
});


// usage: obj = alloc(n[, obj][, type]);
function alloc(n, obj, type) {
n = n >>> 0;

if (obj === undefined)
obj = {};

if (typeof obj === 'number') {
type = obj >>> 0;
obj = {};
} else if (util.isPrimitive(obj)) {
throw new TypeError('obj must be an Object');
}

if (Array.isArray(obj))
throw new TypeError('obj cannot be an array');
if (obj instanceof Buffer)
throw new TypeError('obj cannot be a Buffer');
if (smalloc.isTypedArray(obj))
throw new TypeError('obj cannot be a typed array');
if (smalloc.hasExternalData(obj))
throw new TypeError('object already has external array data');

if (type < kMinType || type > kMaxType)
throw new TypeError('unknown external array type: ' + type);
if (n > kMaxLength)
throw new RangeError('Attempt to allocate array larger than maximum ' +
'size: 0x' + kMaxLength.toString(16) + ' elements');

return smalloc.alloc(obj, n, type);
}


function dispose(obj) {
if (util.isPrimitive(obj))
throw new TypeError('obj must be an Object');
if (obj instanceof Buffer)
throw new TypeError('obj cannot be a Buffer');
if (smalloc.isTypedArray(obj))
throw new TypeError('obj cannot be a typed array');
if (!smalloc.hasExternalData(obj))
throw new TypeError('obj has no external array data');

smalloc.dispose(obj);
}


function copyOnto(source, sourceStart, dest, destStart, copyLength) {
if (util.isPrimitive(source))
throw new TypeError('source must be an Object');
if (util.isPrimitive(dest))
throw new TypeError('dest must be an Object');
if (!smalloc.hasExternalData(source))
throw new TypeError('source has no external array data');
if (!smalloc.hasExternalData(dest))
throw new TypeError('dest has no external array data');

return smalloc.copyOnto(source, sourceStart, dest, destStart, copyLength);
}


function hasExternalData(obj) {
if (util.isPrimitive(obj))
return false;

return smalloc.hasExternalData(obj);
}
100 changes: 18 additions & 82 deletions lib/smalloc.js
Original file line number Diff line number Diff line change
@@ -1,91 +1,27 @@
'use strict';

const smalloc = process.binding('smalloc');
const kMaxLength = smalloc.kMaxLength;
const kMinType = smalloc.kMinType;
const kMaxType = smalloc.kMaxType;
const util = require('util');
const smalloc = require('internal/smalloc');
const deprecate = require('util').deprecate;

exports.alloc = alloc;
exports.copyOnto = copyOnto;
exports.dispose = dispose;
exports.hasExternalData = hasExternalData;
exports.alloc =
deprecate(smalloc.alloc, 'smalloc.alloc: Deprecated, use typed arrays');

exports.copyOnto =
deprecate(smalloc.copyOnto,
'smalloc.copyOnto: Deprecated, use typed arrays');

exports.dispose =
deprecate(smalloc.dispose,
'smalloc.dispose: Deprecated, use typed arrays');

exports.hasExternalData =
deprecate(smalloc.hasExternalData,
'smalloc.hasExternalData: Deprecated, use typed arrays');

// don't allow kMaxLength to accidentally be overwritten. it's a lot less
// apparent when a primitive is accidentally changed.
Object.defineProperty(exports, 'kMaxLength', {
enumerable: true, value: kMaxLength, writable: false
enumerable: true, value: smalloc.kMaxLength, writable: false
});

Object.defineProperty(exports, 'Types', {
enumerable: true, value: Object.freeze(smalloc.types), writable: false
enumerable: true, value: Object.freeze(smalloc.Types), writable: false
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

This seems suspicious? But I don't really know.

Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

smalloc here is from process.binding(). So it was being exported as lower case. Must have been something I missed.

Copy link
Member Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

It's because I moved the file, then added it again. In the original, .types comes from the binding object and is exported as smalloc.Types. Here, I'm re-exporting the latter.

});


// usage: obj = alloc(n[, obj][, type]);
function alloc(n, obj, type) {
n = n >>> 0;

if (obj === undefined)
obj = {};

if (typeof obj === 'number') {
type = obj >>> 0;
obj = {};
} else if (util.isPrimitive(obj)) {
throw new TypeError('obj must be an Object');
}

if (Array.isArray(obj))
throw new TypeError('obj cannot be an array');
if (obj instanceof Buffer)
throw new TypeError('obj cannot be a Buffer');
if (smalloc.isTypedArray(obj))
throw new TypeError('obj cannot be a typed array');
if (smalloc.hasExternalData(obj))
throw new TypeError('object already has external array data');

if (type < kMinType || type > kMaxType)
throw new TypeError('unknown external array type: ' + type);
if (n > kMaxLength)
throw new RangeError('Attempt to allocate array larger than maximum ' +
'size: 0x' + kMaxLength.toString(16) + ' elements');

return smalloc.alloc(obj, n, type);
}


function dispose(obj) {
if (util.isPrimitive(obj))
throw new TypeError('obj must be an Object');
if (obj instanceof Buffer)
throw new TypeError('obj cannot be a Buffer');
if (smalloc.isTypedArray(obj))
throw new TypeError('obj cannot be a typed array');
if (!smalloc.hasExternalData(obj))
throw new TypeError('obj has no external array data');

smalloc.dispose(obj);
}


function copyOnto(source, sourceStart, dest, destStart, copyLength) {
if (util.isPrimitive(source))
throw new TypeError('source must be an Object');
if (util.isPrimitive(dest))
throw new TypeError('dest must be an Object');
if (!smalloc.hasExternalData(source))
throw new TypeError('source has no external array data');
if (!smalloc.hasExternalData(dest))
throw new TypeError('dest has no external array data');

return smalloc.copyOnto(source, sourceStart, dest, destStart, copyLength);
}


function hasExternalData(obj) {
if (util.isPrimitive(obj))
return false;

return smalloc.hasExternalData(obj);
}
2 changes: 1 addition & 1 deletion lib/v8.js
Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@
'use strict';

const v8binding = process.binding('v8');
const smalloc = require('smalloc');
const smalloc = require('internal/smalloc');

const heapStatisticsBuffer =
smalloc.alloc(v8binding.kHeapStatisticsBufferLength,
Expand Down
1 change: 1 addition & 0 deletions node.gyp
Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,7 @@
'lib/zlib.js',

'lib/internal/freelist.js',
'lib/internal/smalloc.js',
],
},

Expand Down