src: add --track-heap-objects
- This makes v8 add .trace_function_info to the serialized form of snapshots from v8::HeapSnapshot::Serialize - .trace_funciton_info combined with .trace_node in snapshots tells the JS location that allocated a specific object PR-URL: https://github.com/nodejs/io.js/pull/2135 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Trevor Norris <trev.norris@gmail.com>
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@ -60,6 +60,8 @@ and servers.
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--throw-deprecation throw errors on deprecations
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--track-heap-objects track heap object allocations for heap snapshots
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--v8-options print v8 command line options
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55
src/node.cc
55
src/node.cc
@ -117,6 +117,7 @@ static bool trace_deprecation = false;
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static bool throw_deprecation = false;
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static bool abort_on_uncaught_exception = false;
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static bool trace_sync_io = false;
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static bool track_heap_objects = false;
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static const char* eval_string = nullptr;
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static unsigned int preload_module_count = 0;
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static const char** preload_modules = nullptr;
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@ -3053,40 +3054,42 @@ static void PrintHelp() {
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" iojs debug script.js [arguments] \n"
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"\n"
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"Options:\n"
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" -v, --version print io.js version\n"
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" -e, --eval script evaluate script\n"
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" -p, --print evaluate script and print result\n"
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" -i, --interactive always enter the REPL even if stdin\n"
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" does not appear to be a terminal\n"
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" -r, --require module to preload (option can be repeated)\n"
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" --no-deprecation silence deprecation warnings\n"
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" --throw-deprecation throw an exception anytime a deprecated "
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" -v, --version print io.js version\n"
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" -e, --eval script evaluate script\n"
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" -p, --print evaluate script and print result\n"
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" -i, --interactive always enter the REPL even if stdin\n"
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" does not appear to be a terminal\n"
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" -r, --require module to preload (option can be repeated)\n"
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" --no-deprecation silence deprecation warnings\n"
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" --throw-deprecation throw an exception anytime a deprecated "
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"function is used\n"
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" --trace-deprecation show stack traces on deprecations\n"
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" --trace-sync-io show stack trace when use of sync IO\n"
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" is detected after the first tick\n"
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" --v8-options print v8 command line options\n"
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" --trace-deprecation show stack traces on deprecations\n"
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" --trace-sync-io show stack trace when use of sync IO\n"
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" is detected after the first tick\n"
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" --track-heap-objects track heap object allocations for heap "
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"snapshots\n"
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" --v8-options print v8 command line options\n"
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#if defined(NODE_HAVE_I18N_SUPPORT)
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" --icu-data-dir=dir set ICU data load path to dir\n"
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" (overrides NODE_ICU_DATA)\n"
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" --icu-data-dir=dir set ICU data load path to dir\n"
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" (overrides NODE_ICU_DATA)\n"
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#if !defined(NODE_HAVE_SMALL_ICU)
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" Note: linked-in ICU data is\n"
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" present.\n"
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" Note: linked-in ICU data is\n"
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" present.\n"
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#endif
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#endif
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"\n"
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"Environment variables:\n"
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#ifdef _WIN32
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"NODE_PATH ';'-separated list of directories\n"
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"NODE_PATH ';'-separated list of directories\n"
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#else
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"NODE_PATH ':'-separated list of directories\n"
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"NODE_PATH ':'-separated list of directories\n"
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#endif
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" prefixed to the module search path.\n"
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"NODE_DISABLE_COLORS Set to 1 to disable colors in the REPL\n"
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" prefixed to the module search path.\n"
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"NODE_DISABLE_COLORS Set to 1 to disable colors in the REPL\n"
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#if defined(NODE_HAVE_I18N_SUPPORT)
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"NODE_ICU_DATA Data path for ICU (Intl object) data\n"
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"NODE_ICU_DATA Data path for ICU (Intl object) data\n"
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#if !defined(NODE_HAVE_SMALL_ICU)
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" (will extend linked-in data)\n"
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" (will extend linked-in data)\n"
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#endif
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#endif
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"\n"
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@ -3187,6 +3190,8 @@ static void ParseArgs(int* argc,
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trace_deprecation = true;
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} else if (strcmp(arg, "--trace-sync-io") == 0) {
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trace_sync_io = true;
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} else if (strcmp(arg, "--track-heap-objects") == 0) {
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track_heap_objects = true;
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} else if (strcmp(arg, "--throw-deprecation") == 0) {
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throw_deprecation = true;
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} else if (strcmp(arg, "--abort-on-uncaught-exception") == 0 ||
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@ -3876,7 +3881,11 @@ Environment* CreateEnvironment(Isolate* isolate,
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static void StartNodeInstance(void* arg) {
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NodeInstanceData* instance_data = static_cast<NodeInstanceData*>(arg);
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Isolate* isolate = Isolate::New();
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// Fetch a reference to the main isolate, so we have a reference to it
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if (track_heap_objects) {
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isolate->GetHeapProfiler()->StartTrackingHeapObjects(true);
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}
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// Fetch a reference to the main isolate, so we have a reference to it
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// even when we need it to access it from another (debugger) thread.
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if (instance_data->is_main())
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node_isolate = isolate;
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