build,src: add Intel Vtune profiling support

This feature supports the Intel Vtune profiling support for JITted
JavaScript on IA32 / X64 / X32 platform. The advantage of this profiling
is that the user / developer of NodeJS application can get the detailed
profiling information for every line of the JavaScript source code.
This information will be very useful for the owner to optimize their
applications.

This feature is a compile-time option. For windows platform, the user
needs to pass the following parameter to vcbuild.bat: "enable-vtune"

For other OS, the user needs to pass the following parameter to
./configure command: "--enable-vtune-profiling"

Ref: https://github.com/nodejs/node/pull/3785
PR-URL: https://github.com/nodejs/node/pull/5527
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>

configure

@@ -92,6 +92,14 @@ parser.add_option("--partly-static",
     help="Generate an executable with libgcc and libstdc++ libraries. This "
          "will not work on OSX when using the default compilation environment")
 
+parser.add_option("--enable-vtune-profiling",
+    action="store_true",
+    dest="enable_vtune_profiling",
+    help="Enable profiling support for Intel Vtune profiler to profile"
+         "JavaScript code executed in nodejs. This feature is only available "
+         "for ia32, x32 or x64 platform.")
+
+
 parser.add_option("--link-module",
     action="append",
     dest="linked_module",
@@ -686,6 +694,15 @@ def configure_node(o):
     o['variables']['node_core_target_name'] = 'node_base'
     o['variables']['node_target_type'] = 'static_library'
 
+  if target_arch in ('x86', 'x64', 'ia32', 'x32'):
+    o['variables']['node_enable_v8_vtunejit'] = b(options.enable_vtune_profiling)
+  elif options.enable_vtune_profiling:
+    raise Exception(
+       'vtune profiler for JavaScript is only supported on x86, x32 or x64 '
+       'platform.')
+  else:
+    o['variables']['node_enable_v8_vtunejit'] = 'false'
+
   if flavor in ('solaris', 'mac', 'linux', 'freebsd'):
     use_dtrace = not options.without_dtrace
     # Don't enable by default on linux and freebsd

node.gyp

@@ -12,6 +12,7 @@
     'node_use_openssl%': 'true',
     'node_shared_openssl%': 'false',
     'node_v8_options%': '',
+    'node_enable_v8_vtunejit%': 'false',
     'node_target_type%': 'executable',
     'node_core_target_name%': 'node',
     'library_files': [
@@ -235,6 +236,13 @@
               'defines': [ 'NODE_HAVE_SMALL_ICU=1' ],
           }]],
         }],
+        [ 'node_enable_v8_vtunejit=="true" and (target_arch=="x64" or \
+           target_arch=="ia32" or target_arch=="x32")', {
+          'defines': [ 'NODE_ENABLE_VTUNE_PROFILING' ],
+          'dependencies': [
+            'deps/v8/src/third_party/vtune/v8vtune.gyp:v8_vtune'
+          ],
+        }],
         [ 'node_use_openssl=="true"', {
           'defines': [ 'HAVE_OPENSSL=1' ],
           'sources': [

src/node.cc

@@ -44,6 +44,10 @@
 #include "v8-profiler.h"
 #include "zlib.h"
 
+#ifdef NODE_ENABLE_VTUNE_PROFILING
+#include "../deps/v8/src/third_party/vtune/v8-vtune.h"
+#endif
+
 #include <errno.h>
 #include <limits.h>  // PATH_MAX
 #include <locale.h>
@@ -4070,6 +4074,9 @@ static void StartNodeInstance(void* arg) {
   Isolate::CreateParams params;
   ArrayBufferAllocator* array_buffer_allocator = new ArrayBufferAllocator();
   params.array_buffer_allocator = array_buffer_allocator;
+#ifdef NODE_ENABLE_VTUNE_PROFILING
+  params.code_event_handler = vTune::GetVtuneCodeEventHandler();
+#endif
   Isolate* isolate = Isolate::New(params);
   if (track_heap_objects) {
     isolate->GetHeapProfiler()->StartTrackingHeapObjects(true);

vcbuild.bat

@@ -36,6 +36,7 @@ set release_urls_arg=
 set build_release=
 set configure_flags=
 set build_addons=
+set enable_vtune_profiling=
 
 :next-arg
 if "%1"=="" goto args-done
@@ -73,6 +74,7 @@ if /i "%1"=="full-icu"      set i18n_arg=%1&goto arg-ok
 if /i "%1"=="intl-none"     set i18n_arg=%1&goto arg-ok
 if /i "%1"=="download-all"  set download_arg="--download=all"&goto arg-ok
 if /i "%1"=="ignore-flaky"  set test_args=%test_args% --flaky-tests=dontcare&goto arg-ok
+if /i "%1"=="enable-vtune"  set enable_vtune_profiling="--enable-vtune-profiling"&goto arg-ok
 
 echo Warning: ignoring invalid command line option `%1`.
 
@@ -179,7 +181,7 @@ if defined noprojgen goto msbuild
 
 @rem Generate the VS project.
 echo configure %configure_flags% --dest-cpu=%target_arch% --tag=%TAG%
-python configure %configure_flags% --dest-cpu=%target_arch% --tag=%TAG%
+python configure %configure_flags% %enable_vtune_profiling% --dest-cpu=%target_arch% --tag=%TAG%
 if errorlevel 1 goto create-msvs-files-failed
 if not exist node.sln goto create-msvs-files-failed
 echo Project files generated.
@@ -294,7 +296,7 @@ goto exit
 
 :help
 
-echo vcbuild.bat [debug/release] [msi] [test-all/test-uv/test-internet/test-pummel/test-simple/test-message] [clean] [noprojgen] [small-icu/full-icu/intl-none] [nobuild] [nosign] [x86/x64] [vc2013/vc2015] [download-all]
+echo vcbuild.bat [debug/release] [msi] [test-all/test-uv/test-internet/test-pummel/test-simple/test-message] [clean] [noprojgen] [small-icu/full-icu/intl-none] [nobuild] [nosign] [x86/x64] [vc2013/vc2015] [download-all] [enable-vtune]
 
 echo Examples:
 echo   vcbuild.bat                : builds release build
@@ -302,6 +304,7 @@ echo   vcbuild.bat debug          : builds debug build
 echo   vcbuild.bat release msi    : builds release build and MSI installer package
 echo   vcbuild.bat test           : builds debug build and runs tests
 echo   vcbuild.bat build-release  : builds the release distribution as used by nodejs.org
+echo   vcbuild.bat enable-vtune   : builds nodejs with Intel Vtune profiling support to profile JavaScript
 goto exit
 
 :exit