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Export block and object layout constants from Rtrace #1572

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Merged
merged 2 commits into from
Dec 11, 2020
Merged

Export block and object layout constants from Rtrace #1572

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e30ebae
Export block and object layout constants from Rtrace
dcodeIO Dec 10, 2020
a0fc40f
rebuild, definitions
dcodeIO Dec 10, 2020
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7 changes: 7 additions & 0 deletions lib/rtrace/index.d.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,13 @@ export declare interface RtraceOptions {
getMemory(): WebAssembly.Memory;
}

/** Overhead between a pointer to a block and its unmanaged data. */
export declare const BLOCK_OVERHEAD;
/** Overhead between a pointer to a block's unmanaged data to its managed data. */
export declare const OBJECT_OVERHEAD;
/** Overhead between a pointer to a block and its managed data. */
export declare const TOTAL_OVERHEAD;

export declare class Rtrace {
[key: string]: unknown; // can be used as a Wasm import

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4 changes: 3 additions & 1 deletion lib/rtrace/index.js
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Expand Up @@ -9,7 +9,9 @@ const PTR_SIZE = 1 << PTR_SIZE_BITS;
const PTR_MASK = PTR_SIZE - 1;
const PTR_VIEW = Uint32Array;

const BLOCK_OVERHEAD = PTR_SIZE;
export const BLOCK_OVERHEAD = PTR_SIZE;
export const OBJECT_OVERHEAD = 16;
export const TOTAL_OVERHEAD = BLOCK_OVERHEAD + OBJECT_OVERHEAD;

const RT_TLSF = "~lib/rt/tlsf/";

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7 changes: 6 additions & 1 deletion lib/rtrace/umd/index.js
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Expand Up @@ -5,7 +5,7 @@ var rtrace = (function(exports) {
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = exports.Rtrace = void 0;
exports.default = exports.Rtrace = exports.TOTAL_OVERHEAD = exports.OBJECT_OVERHEAD = exports.BLOCK_OVERHEAD = void 0;
// WebAssembly pages are 65536 kb
const PAGE_SIZE_BITS = 16;
const PAGE_SIZE = 1 << PAGE_SIZE_BITS;
Expand All @@ -16,6 +16,11 @@ var rtrace = (function(exports) {
const PTR_MASK = PTR_SIZE - 1;
const PTR_VIEW = Uint32Array;
const BLOCK_OVERHEAD = PTR_SIZE;
exports.BLOCK_OVERHEAD = BLOCK_OVERHEAD;
const OBJECT_OVERHEAD = 16;
exports.OBJECT_OVERHEAD = OBJECT_OVERHEAD;
const TOTAL_OVERHEAD = BLOCK_OVERHEAD + OBJECT_OVERHEAD;
exports.TOTAL_OVERHEAD = TOTAL_OVERHEAD;
const RT_TLSF = "~lib/rt/tlsf/";

function assert(x) {
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