@memlab/core
Version:
memlab core libraries
65 lines (64 loc) • 2.5 kB
JavaScript
;
/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @oncall memory_lab
*/
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const Serializer_1 = __importDefault(require("../lib/Serializer"));
const Utils_1 = __importDefault(require("../lib/Utils"));
const fs_1 = __importDefault(require("fs"));
const path_1 = __importDefault(require("path"));
const Console_1 = __importDefault(require("../lib/Console"));
class LeakTraceDetailsLogger {
_wrapPathJSONInLoader(jsonContent) {
return `window.gcPath = ${jsonContent};`;
}
setTraceFileEmpty(filepath) {
const content = this._wrapPathJSONInLoader('');
fs_1.default.writeFile(filepath, content, { encoding: 'utf8' }, () => {
// noop
});
}
logTrace(leakedIdSet, snapshot, nodeIdsInSnapshots, trace, filepath) {
const options = { leakedIdSet, nodeIdsInSnapshots };
const gcTrace = Serializer_1.default.JSONifyPath(trace, snapshot, options);
try {
const traceJSON = JSON.stringify(gcTrace, null, 2);
const content = this._wrapPathJSONInLoader(traceJSON);
fs_1.default.writeFile(filepath, content, { encoding: 'utf8' }, () => {
// noop
});
}
catch (ex) {
const error = Utils_1.default.getError(ex);
if (error.message.includes('Invalid string length')) {
Console_1.default.warning('Trace details JSON not saved because it exceeded the size limit.');
}
else {
Utils_1.default.haltOrThrow(error);
}
}
return gcTrace;
}
logTraces(leakedIdSet, snapshot, nodeIdsInSnapshots, traces, outDir) {
const ret = [];
for (const trace of traces) {
const nodeId = Utils_1.default.getLastNodeId(trace);
const file = path_1.default.join(outDir, `@${nodeId}.json`);
const jsonTrace = this.logTrace(leakedIdSet, snapshot, nodeIdsInSnapshots, trace, file);
if (jsonTrace != null) {
ret.push(jsonTrace);
}
}
return ret;
}
}
exports.default = new LeakTraceDetailsLogger();