Class: ShapeUnboundGrowthAnalysis

Hierarchy

• BaseAnalysis

  ↳ ShapeUnboundGrowthAnalysis

Constructors

new ShapeUnboundGrowthAnalysis()

Methods

analyzeSnapshotsInDirectory(directory, options?)

Run heap analysis for a series of heap snapshot files

• Parameters:
  • directory: string | the absolute path of the directory holding a series of .heapsnapshot files, all snapshot files will be loaded and analyzed in the alphanumerically ascending order of those snapshot file names.
  • options: RunHeapAnalysisOptions | optional configuration for the heap analysis run
• Returns: Promise<AnalyzeSnapshotResult> | this API returns AnalyzeSnapshotResult, which contains the logging file of analysis console output. Alternatively, to get more structured analysis results, check out the documentation of the hosting heap analysis class and call the analysis-specific API to get results after calling this method.
• Example:

const analysis = new ShapeUnboundGrowthAnalysis();
// analysis console output is saved in result.analysisOutputFile
const result = await analysis.analyzeSnapshotsInDirectory(snapshotDirectory);
// query analysis-specific and structured results
const shapes = analysis.getShapesWithUnboundGrowth();

• Additionally, you can specify a working directory to where the intermediate, logging, and final output files will be dumped:

const analysis = new ShapeUnboundGrowthAnalysis();
// analysis console output is saved in result.analysisOutputFile
// which is inside the specified working directory
const result = await analysis.analyzeSnapshotsInDirectory(snapshotDirectory, {
  // if the specified directory doesn't exist, memlab will create it
  workDir: '/tmp/your/work/dir',
});

• Source:
  • heap-analysis/src/BaseAnalysis.ts:148

---

getCommandName()

Get the name of the heap analysis, which is also used to reference the analysis in memlab command-line tool.

The following terminal command will initiate with this analysis: memlab analyze <ANALYSIS_NAME>

• Returns: string | the name of the analysis
• Examples:

const analysis = new YourAnalysis();
const name = analysis.getCommandName();

• Source:
  • heap-analysis/src/plugins/ShapeUnboundGrowthAnalysis.ts:43

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getShapesWithUnboundGrowth()

• Returns: ShapeSummary[]
• Source:
  • heap-analysis/src/plugins/ShapeUnboundGrowthAnalysis.ts:71