inspector: implement --heap-prof

In addition implements --heap-prof-name, --heap-prof-dir and
--heap-prof-interval.
These flags are similar to --cpu-prof flags but they are meant
for the V8 sampling heap profiler instead of the CPU profiler.

PR-URL: https://github.com/nodejs/node/pull/27596
Fixes: https://github.com/nodejs/node/issues/27421
Reviewed-By: Jan Krems <jan.krems@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

5 files changed, 66 insertions, 0 deletions

diff --git a/test/fixtures/workload/allocation-exit.js b/test/fixtures/workload/allocation-exit.js
new file mode 100644
index 0000000000..dccc61ac94
--- /dev/null
+++ b/test/fixtures/workload/allocation-exit.js
@@ -0,0 +1,17 @@
+'use strict';
+
+const util = require('util');
+const total = parseInt(process.env.TEST_ALLOCATION) || 100;
+let count = 0;
+let string = '';
+function runAllocation() {
+  string += util.inspect(process.env);
+  if (count++ < total) {
+    setTimeout(runAllocation, 1);
+  } else {
+    console.log(string.length);
+    process.exit(55);
+  }
+}
+
+setTimeout(runAllocation, 1);
diff --git a/test/fixtures/workload/allocation-sigint.js b/test/fixtures/workload/allocation-sigint.js
new file mode 100644
index 0000000000..96ae669016
--- /dev/null
+++ b/test/fixtures/workload/allocation-sigint.js
@@ -0,0 +1,17 @@
+'use strict';
+
+const util = require('util');
+const total = parseInt(process.env.TEST_ALLOCATION) || 100;
+let count = 0;
+let string = '';
+function runAllocation() {
+  string += util.inspect(process.env);
+  if (count++ < total) {
+    setTimeout(runAllocation, 1);
+  } else {
+    console.log(string.length);
+    process.kill(process.pid, "SIGINT");
+  }
+}
+
+setTimeout(runAllocation, 1);
diff --git a/test/fixtures/workload/allocation-worker-argv.js b/test/fixtures/workload/allocation-worker-argv.js
new file mode 100644
index 0000000000..299eb884e5
--- /dev/null
+++ b/test/fixtures/workload/allocation-worker-argv.js
@@ -0,0 +1,11 @@
+'use strict';
+
+const { Worker } = require('worker_threads');
+const path = require('path');
+new Worker(path.join(__dirname, 'allocation.js'), {
+  execArgv: [
+    '--heap-prof',
+    '--heap-prof-interval',
+    process.HEAP_PROF_INTERVAL || '128',
+  ]
+});
diff --git a/test/fixtures/workload/allocation-worker.js b/test/fixtures/workload/allocation-worker.js
new file mode 100644
index 0000000000..21be6ce91a
--- /dev/null
+++ b/test/fixtures/workload/allocation-worker.js
@@ -0,0 +1,5 @@
+'use strict';
+
+const { Worker } = require('worker_threads');
+const path = require('path');
+new Worker(path.join(__dirname, 'allocation.js'));
diff --git a/test/fixtures/workload/allocation.js b/test/fixtures/workload/allocation.js
new file mode 100644
index 0000000000..b9a767f0f5
--- /dev/null
+++ b/test/fixtures/workload/allocation.js
@@ -0,0 +1,16 @@
+'use strict';
+
+const util = require('util');
+const total = parseInt(process.env.TEST_ALLOCATION) || 100;
+let count = 0;
+let string = '';
+function runAllocation() {
+  string += util.inspect(process.env);
+  if (count++ < total) {
+    setTimeout(runAllocation, 1);
+  } else {
+    console.log(string.length);
+  }
+}
+
+setTimeout(runAllocation, 1);