The Tor Browser: js/src/jsapi-tests/testProfileStrings.cpp@b8a032363ba2 (annotated)

js/src/jsapi-tests/testProfileStrings.cpp@b8a032363ba2 (annotated)

js/src/jsapi-tests/testProfileStrings.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
  * vim: set ts=8 sts=4 et sw=4 tw=99:
  *
  * Tests the stack-based instrumentation profiler on a JSRuntime
  */
 /* 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/. */
 #include "jscntxt.h"
 #include "jsapi-tests/tests.h"
 static js::ProfileEntry pstack[10];
 static uint32_t psize = 0;
 static uint32_t max_stack = 0;
 static void
 reset(JSContext *cx)
 {
     psize = max_stack = 0;
     memset(pstack, 0, sizeof(pstack));
     cx->runtime()->spsProfiler.stringsReset();
     cx->runtime()->spsProfiler.enableSlowAssertions(true);
     js::EnableRuntimeProfilingStack(cx->runtime(), true);
 }
 static const JSClass ptestClass = {
     "Prof", 0, JS_PropertyStub, JS_DeletePropertyStub, JS_PropertyStub,
     JS_StrictPropertyStub, JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub
 };
 static bool
 test_fn(JSContext *cx, unsigned argc, jsval *vp)
 {
     max_stack = psize;
     return true;
 }
 static bool
 test_fn2(JSContext *cx, unsigned argc, jsval *vp)
 {
     JS::RootedValue r(cx);
     JS::RootedObject global(cx, JS::CurrentGlobalOrNull(cx));
     return JS_CallFunctionName(cx, global, "d", JS::HandleValueArray::empty(), &r);
 }
 static bool
 enable(JSContext *cx, unsigned argc, jsval *vp)
 {
     js::EnableRuntimeProfilingStack(cx->runtime(), true);
     return true;
 }
 static bool
 disable(JSContext *cx, unsigned argc, jsval *vp)
 {
     js::EnableRuntimeProfilingStack(cx->runtime(), false);
     return true;
 }
 static bool
 Prof(JSContext* cx, unsigned argc, jsval *vp)
 {
     JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
     JSObject *obj = JS_NewObjectForConstructor(cx, &ptestClass, args);
     if (!obj)
         return false;
     args.rval().setObject(*obj);
     return true;
 }
 static const JSFunctionSpec ptestFunctions[] = {
     JS_FS("test_fn", test_fn, 0, 0),
     JS_FS("test_fn2", test_fn2, 0, 0),
     JS_FS("enable", enable, 0, 0),
     JS_FS("disable", disable, 0, 0),
     JS_FS_END
 };
 static JSObject*
 initialize(JSContext *cx)
 {
     js::SetRuntimeProfilingStack(cx->runtime(), pstack, &psize, 10);
     JS::RootedObject global(cx, JS::CurrentGlobalOrNull(cx));
     return JS_InitClass(cx, global, js::NullPtr(), &ptestClass, Prof, 0,
                         nullptr, ptestFunctions, nullptr, nullptr);
 }
 BEGIN_TEST(testProfileStrings_isCalledWithInterpreter)
 {
     CHECK(initialize(cx));
     EXEC("function g() { var p = new Prof(); p.test_fn(); }");
     EXEC("function f() { g(); }");
     EXEC("function e() { f(); }");
     EXEC("function d() { e(); }");
     EXEC("function c() { d(); }");
     EXEC("function b() { c(); }");
     EXEC("function a() { b(); }");
     EXEC("function check() { var p = new Prof(); p.test_fn(); a(); }");
     EXEC("function check2() { var p = new Prof(); p.test_fn2(); }");
     reset(cx);
     {
         JS::RootedValue rval(cx);
         /* Make sure the stack resets and we have an entry for each stack */
         CHECK(JS_CallFunctionName(cx, global, "check", JS::HandleValueArray::empty(),
                                   &rval));
         CHECK(psize == 0);
         CHECK(max_stack >= 8);
         CHECK(cx->runtime()->spsProfiler.stringsCount() == 8);
         /* Make sure the stack resets and we added no new entries */
         max_stack = 0;
         CHECK(JS_CallFunctionName(cx, global, "check", JS::HandleValueArray::empty(),
                                   &rval));
         CHECK(psize == 0);
         CHECK(max_stack >= 8);
         CHECK(cx->runtime()->spsProfiler.stringsCount() == 8);
     }
     reset(cx);
     {
         JS::RootedValue rval(cx);
         CHECK(JS_CallFunctionName(cx, global, "check2", JS::HandleValueArray::empty(),
                                   &rval));
         CHECK(cx->runtime()->spsProfiler.stringsCount() == 5);
         CHECK(max_stack >= 6);
         CHECK(psize == 0);
     }
     js::EnableRuntimeProfilingStack(cx->runtime(), false);
     js::SetRuntimeProfilingStack(cx->runtime(), pstack, &psize, 3);
     reset(cx);
     {
         JS::RootedValue rval(cx);
         pstack[3].setLabel((char*) 1234);
         CHECK(JS_CallFunctionName(cx, global, "check", JS::HandleValueArray::empty(),
                                   &rval));
         CHECK((size_t) pstack[3].label() == 1234);
         CHECK(max_stack >= 8);
         CHECK(psize == 0);
     }
     return true;
 }
 END_TEST(testProfileStrings_isCalledWithInterpreter)
 BEGIN_TEST(testProfileStrings_isCalledWithJIT)
 {
     CHECK(initialize(cx));
     JS::RuntimeOptionsRef(cx).setBaseline(true)
                              .setIon(true);
     EXEC("function g() { var p = new Prof(); p.test_fn(); }");
     EXEC("function f() { g(); }");
     EXEC("function e() { f(); }");
     EXEC("function d() { e(); }");
     EXEC("function c() { d(); }");
     EXEC("function b() { c(); }");
     EXEC("function a() { b(); }");
     EXEC("function check() { var p = new Prof(); p.test_fn(); a(); }");
     EXEC("function check2() { var p = new Prof(); p.test_fn2(); }");
     reset(cx);
     {
         JS::RootedValue rval(cx);
         /* Make sure the stack resets and we have an entry for each stack */
         CHECK(JS_CallFunctionName(cx, global, "check", JS::HandleValueArray::empty(),
                                   &rval));
         CHECK(psize == 0);
         CHECK(max_stack >= 8);
         /* Make sure the stack resets and we added no new entries */
         uint32_t cnt = cx->runtime()->spsProfiler.stringsCount();
         max_stack = 0;
         CHECK(JS_CallFunctionName(cx, global, "check", JS::HandleValueArray::empty(),
                                   &rval));
         CHECK(psize == 0);
         CHECK(cx->runtime()->spsProfiler.stringsCount() == cnt);
         CHECK(max_stack >= 8);
     }
     js::EnableRuntimeProfilingStack(cx->runtime(), false);
     js::SetRuntimeProfilingStack(cx->runtime(), pstack, &psize, 3);
     reset(cx);
     {
         /* Limit the size of the stack and make sure we don't overflow */
         JS::RootedValue rval(cx);
         pstack[3].setLabel((char*) 1234);
         CHECK(JS_CallFunctionName(cx, global, "check", JS::HandleValueArray::empty(),
                                   &rval));
         CHECK(psize == 0);
         CHECK(max_stack >= 8);
         CHECK((size_t) pstack[3].label() == 1234);
     }
     return true;
 }
 END_TEST(testProfileStrings_isCalledWithJIT)
 BEGIN_TEST(testProfileStrings_isCalledWhenError)
 {
     CHECK(initialize(cx));
     JS::RuntimeOptionsRef(cx).setBaseline(true)
                              .setIon(true);
     EXEC("function check2() { throw 'a'; }");
     reset(cx);
     JS::ContextOptionsRef(cx).setDontReportUncaught(true);
     {
         JS::RootedValue rval(cx);
         /* Make sure the stack resets and we have an entry for each stack */
         bool ok = JS_CallFunctionName(cx, global, "check2", JS::HandleValueArray::empty(),
                                       &rval);
         CHECK(!ok);
         CHECK(psize == 0);
         CHECK(cx->runtime()->spsProfiler.stringsCount() == 1);
         JS_ClearPendingException(cx);
     }
     return true;
 }
 END_TEST(testProfileStrings_isCalledWhenError)
 BEGIN_TEST(testProfileStrings_worksWhenEnabledOnTheFly)
 {
     CHECK(initialize(cx));
     JS::RuntimeOptionsRef(cx).setBaseline(true)
                              .setIon(true);
     EXEC("function b(p) { p.test_fn(); }");
     EXEC("function a() { var p = new Prof(); p.enable(); b(p); }");
     reset(cx);
     js::EnableRuntimeProfilingStack(cx->runtime(), false);
     {
         /* enable it in the middle of JS and make sure things check out */
         JS::RootedValue rval(cx);
         JS_CallFunctionName(cx, global, "a", JS::HandleValueArray::empty(), &rval);
         CHECK(psize == 0);
         CHECK(max_stack >= 1);
         CHECK(cx->runtime()->spsProfiler.stringsCount() == 1);
     }
     EXEC("function d(p) { p.disable(); }");
     EXEC("function c() { var p = new Prof(); d(p); }");
     reset(cx);
     {
         /* now disable in the middle of js */
         JS::RootedValue rval(cx);
         JS_CallFunctionName(cx, global, "c", JS::HandleValueArray::empty(), &rval);
         CHECK(psize == 0);
     }
     EXEC("function e() { var p = new Prof(); d(p); p.enable(); b(p); }");
     reset(cx);
     {
         /* now disable in the middle of js, but re-enable before final exit */
         JS::RootedValue rval(cx);
         JS_CallFunctionName(cx, global, "e", JS::HandleValueArray::empty(), &rval);
         CHECK(psize == 0);
         CHECK(max_stack >= 3);
     }
     EXEC("function h() { }");
     EXEC("function g(p) { p.disable(); for (var i = 0; i < 100; i++) i++; }");
     EXEC("function f() { g(new Prof()); }");
     reset(cx);
     cx->runtime()->spsProfiler.enableSlowAssertions(false);
     {
         JS::RootedValue rval(cx);
         /* disable, and make sure that if we try to re-enter the JIT the pop
          * will still happen */
         JS_CallFunctionName(cx, global, "f", JS::HandleValueArray::empty(), &rval);
         CHECK(psize == 0);
     }
     return true;
 }
 END_TEST(testProfileStrings_worksWhenEnabledOnTheFly)

The Tor Browser / annotate

js/src/jsapi-tests/testProfileStrings.cpp@b8a032363ba2 (annotated)

js/src/jsapi-tests/testProfileStrings.cpp