Add m-esr52 at 52.6.0

1 files changed, 91 insertions, 0 deletions

diff --git a/devtools/client/memory/telemetry.js b/devtools/client/memory/telemetry.js
new file mode 100644
index 000000000..1e55805d3
--- /dev/null
+++ b/devtools/client/memory/telemetry.js
@@ -0,0 +1,91 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This module exports methods to record telemetry data for memory tool usage.
+//
+// NB: Ensure that *every* exported function is wrapped in `makeInfallible` so
+// that our probes don't accidentally break code that actually does productive
+// work for the user!
+
+const { telemetry } = require("Services");
+const { makeInfallible, immutableUpdate } = require("devtools/shared/DevToolsUtils");
+const { labelDisplays, treeMapDisplays, censusDisplays } = require("./constants");
+
+exports.countTakeSnapshot = makeInfallible(function () {
+  const histogram = telemetry.getHistogramById("DEVTOOLS_MEMORY_TAKE_SNAPSHOT_COUNT");
+  histogram.add(1);
+}, "devtools/client/memory/telemetry#countTakeSnapshot");
+
+exports.countImportSnapshot = makeInfallible(function () {
+  const histogram = telemetry.getHistogramById("DEVTOOLS_MEMORY_IMPORT_SNAPSHOT_COUNT");
+  histogram.add(1);
+}, "devtools/client/memory/telemetry#countImportSnapshot");
+
+exports.countExportSnapshot = makeInfallible(function () {
+  const histogram = telemetry.getHistogramById("DEVTOOLS_MEMORY_EXPORT_SNAPSHOT_COUNT");
+  histogram.add(1);
+}, "devtools/client/memory/telemetry#countExportSnapshot");
+
+const COARSE_TYPE = "Coarse Type";
+const ALLOCATION_STACK = "Allocation Stack";
+const INVERTED_ALLOCATION_STACK = "Inverted Allocation Stack";
+const CUSTOM = "Custom";
+
+/**
+ * @param {String|null} filter
+ *        The filter string used, if any.
+ *
+ * @param {Boolean} diffing
+ *        True if the census was a diffing census, false otherwise.
+ *
+ * @param {censusDisplayModel} display
+ *        The display used with the census.
+ */
+exports.countCensus = makeInfallible(function ({ filter, diffing, display }) {
+  let histogram = telemetry.getHistogramById("DEVTOOLS_MEMORY_INVERTED_CENSUS");
+  histogram.add(!!display.inverted);
+
+  histogram = telemetry.getHistogramById("DEVTOOLS_MEMORY_FILTER_CENSUS");
+  histogram.add(!!filter);
+
+  histogram = telemetry.getHistogramById("DEVTOOLS_MEMORY_DIFF_CENSUS");
+  histogram.add(!!diffing);
+
+  histogram = telemetry.getKeyedHistogramById("DEVTOOLS_MEMORY_BREAKDOWN_CENSUS_COUNT");
+  if (display === censusDisplays.coarseType) {
+    histogram.add(COARSE_TYPE);
+  } else if (display === censusDisplays.allocationStack) {
+    histogram.add(ALLOCATION_STACK);
+  } else if (display === censusDisplays.invertedAllocationStack) {
+    histogram.add(INVERTED_ALLOCATION_STACK);
+  } else {
+    histogram.add(CUSTOM);
+  }
+}, "devtools/client/memory/telemetry#countCensus");
+
+/**
+ * @param {Object} opts
+ *        The same parameters specified for countCensus.
+ */
+exports.countDiff = makeInfallible(function (opts) {
+  exports.countCensus(immutableUpdate(opts, { diffing: true }));
+}, "devtools/client/memory/telemetry#countDiff");
+
+/**
+ * @param {Object} display
+ *        The display used to label nodes in the dominator tree.
+ */
+exports.countDominatorTree = makeInfallible(function ({ display }) {
+  let histogram = telemetry.getHistogramById("DEVTOOLS_MEMORY_DOMINATOR_TREE_COUNT");
+  histogram.add(1);
+
+  histogram = telemetry.getKeyedHistogramById("DEVTOOLS_MEMORY_BREAKDOWN_DOMINATOR_TREE_COUNT");
+  if (display === labelDisplays.coarseType) {
+    histogram.add(COARSE_TYPE);
+  } else if (display === labelDisplays.allocationStack) {
+    histogram.add(ALLOCATION_STACK);
+  } else {
+    histogram.add(CUSTOM);
+  }
+}, "devtools/client/memory/telemetry#countDominatorTree");