Commit 7465ee54b512e6772d88465794c551333e42ecfe
added interfaceAPI
wanderer committed on 11/5/2016, 11:32:23 AMParent: c326c8af2a729760e833b861163acade71770ff5
Files changed
| interfaceAPI.js | added |
| interfaceAPI.js | ||
|---|---|---|
| @@ -1,0 +1,47 @@ | ||
| 1 | +module.exports = class interfaceAPI { | |
| 2 | + /** | |
| 3 | + * The interface API is the api the exposed to interfaces. All queries about | |
| 4 | + * the enviroment and call to the kernel go through this API | |
| 5 | + */ | |
| 6 | + constructor (code) { | |
| 7 | + this._module = WebAssembly.Module(code) | |
| 8 | + } | |
| 9 | + | |
| 10 | + run (environment, imports) { | |
| 11 | + this._environment = environment | |
| 12 | + // TODO, delete the instance once done. | |
| 13 | + const instance = this._instance = WebAssembly.Instance(this._module, imports) | |
| 14 | + if (instance.exports.main) { | |
| 15 | + instance.exports.main() | |
| 16 | + } | |
| 17 | + return this.onDone() | |
| 18 | + } | |
| 19 | + | |
| 20 | + // returns a promise that resolves when the wasm instance is done running | |
| 21 | + async onDone () { | |
| 22 | + let prevOps | |
| 23 | + while (prevOps !== this._opsQueue) { | |
| 24 | + prevOps = this._opsQueue | |
| 25 | + await this._opsQueue | |
| 26 | + } | |
| 27 | + } | |
| 28 | + | |
| 29 | + pushOpsQueue (promise, callbackIndex, intefaceCallback) { | |
| 30 | + this._opsQueue = Promise.all([this._opsQueue, promise]).then(values => { | |
| 31 | + intefaceCallback(values.pop()) | |
| 32 | + this._instance.exports[callbackIndex.toString()]() | |
| 33 | + }) | |
| 34 | + } | |
| 35 | + | |
| 36 | + sendMessage (message) { | |
| 37 | + | |
| 38 | + } | |
| 39 | + | |
| 40 | + get environment () { | |
| 41 | + return this._environment | |
| 42 | + } | |
| 43 | + | |
| 44 | + get memory () { | |
| 45 | + return this._instance.exports.memory | |
| 46 | + } | |
| 47 | +} | |
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