All files / lib/internal heap_utils.js

100% Statements 41/41
100% Branches 5/5
100% Functions 3/3
100% Lines 41/41

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 4222x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 14x 14x 14x 14x 14x 22x 22x 11x 11x 11x 22x 22x 12x 12x 12x 12x 12x 22x 22x 794x 794x 22x 22x 22x 22x 22x  
'use strict';
const {
  Symbol
} = primordials;
const {
  kUpdateTimer,
  onStreamRead,
} = require('internal/stream_base_commons');
const { owner_symbol } = require('internal/async_hooks').symbols;
const { Readable } = require('stream');
 
const kHandle = Symbol('kHandle');
 
class HeapSnapshotStream extends Readable {
  constructor(handle) {
    super({ autoDestroy: true });
    this[kHandle] = handle;
    handle[owner_symbol] = this;
    handle.onread = onStreamRead;
  }
 
  _read() {
    if (this[kHandle])
      this[kHandle].readStart();
  }
 
  _destroy() {
    // Release the references on the handle so that
    // it can be garbage collected.
    this[kHandle][owner_symbol] = undefined;
    this[kHandle] = undefined;
  }
 
  [kUpdateTimer]() {
    // Does nothing
  }
}
 
module.exports = {
  HeapSnapshotStream
};