Updated MallocHooks to collect stack traces when memory is allocated.

runtime/vm/profiler_test.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/assert.h"
 
 #include "vm/dart_api_impl.h"
 #include "vm/dart_api_state.h"
 #include "vm/globals.h"
 #include "vm/profiler.h"
@@ skipping 50 matching lines @@
 
   ~MaxProfileDepthScope() { Profiler::SetSampleDepth(FLAG_max_profile_depth_); }
 
  private:
   const intptr_t FLAG_max_profile_depth_;
 };
 
 
 class ProfileSampleBufferTestHelper {
  public:
-  static intptr_t IterateCount(const Isolate* isolate,
+  static intptr_t IterateCount(const Dart_Port port,
                                const SampleBuffer& sample_buffer) {
     intptr_t c = 0;
     for (intptr_t i = 0; i < sample_buffer.capacity(); i++) {
       Sample* sample = sample_buffer.At(i);
-      if (sample->isolate() != isolate) {
+      if (sample->port() != port) {
         continue;
       }
       c++;
     }
     return c;
   }
 
 
-  static intptr_t IterateSumPC(const Isolate* isolate,
+  static intptr_t IterateSumPC(const Dart_Port port,
                                const SampleBuffer& sample_buffer) {
     intptr_t c = 0;
     for (intptr_t i = 0; i < sample_buffer.capacity(); i++) {
       Sample* sample = sample_buffer.At(i);
-      if (sample->isolate() != isolate) {
+      if (sample->port() != port) {
         continue;
       }
       c += sample->At(0);
     }
     return c;
   }
 };
 
 
 TEST_CASE(Profiler_SampleBufferWrapTest) {
   SampleBuffer* sample_buffer = new SampleBuffer(3);
-  Isolate* i = reinterpret_cast<Isolate*>(0x1);
+  Dart_Port i = 123;
   EXPECT_EQ(0, ProfileSampleBufferTestHelper::IterateSumPC(i, *sample_buffer));
   Sample* s;
   s = sample_buffer->ReserveSample();
   s->Init(i, 0, 0);
   s->SetAt(0, 2);
   EXPECT_EQ(2, ProfileSampleBufferTestHelper::IterateSumPC(i, *sample_buffer));
   s = sample_buffer->ReserveSample();
   s->Init(i, 0, 0);
   s->SetAt(0, 4);
   EXPECT_EQ(6, ProfileSampleBufferTestHelper::IterateSumPC(i, *sample_buffer));
   s = sample_buffer->ReserveSample();
   s->Init(i, 0, 0);
   s->SetAt(0, 6);
   EXPECT_EQ(12, ProfileSampleBufferTestHelper::IterateSumPC(i, *sample_buffer));
   s = sample_buffer->ReserveSample();
   s->Init(i, 0, 0);
   s->SetAt(0, 8);
   EXPECT_EQ(18, ProfileSampleBufferTestHelper::IterateSumPC(i, *sample_buffer));
   delete sample_buffer;
 }
 
 
 TEST_CASE(Profiler_SampleBufferIterateTest) {
   SampleBuffer* sample_buffer = new SampleBuffer(3);
-  Isolate* i = reinterpret_cast<Isolate*>(0x1);
+  Dart_Port i = 123;
   EXPECT_EQ(0, ProfileSampleBufferTestHelper::IterateCount(i, *sample_buffer));
   Sample* s;
   s = sample_buffer->ReserveSample();
   s->Init(i, 0, 0);
   EXPECT_EQ(1, ProfileSampleBufferTestHelper::IterateCount(i, *sample_buffer));
   s = sample_buffer->ReserveSample();
   s->Init(i, 0, 0);
   EXPECT_EQ(2, ProfileSampleBufferTestHelper::IterateCount(i, *sample_buffer));
   s = sample_buffer->ReserveSample();
   s->Init(i, 0, 0);
   EXPECT_EQ(3, ProfileSampleBufferTestHelper::IterateCount(i, *sample_buffer));
   s = sample_buffer->ReserveSample();
   s->Init(i, 0, 0);
   EXPECT_EQ(3, ProfileSampleBufferTestHelper::IterateCount(i, *sample_buffer));
   delete sample_buffer;
 }
 
 
 TEST_CASE(Profiler_AllocationSampleTest) {
   Isolate* isolate = Isolate::Current();
   SampleBuffer* sample_buffer = new SampleBuffer(3);
   Sample* sample = sample_buffer->ReserveSample();
-  sample->Init(isolate, 0, 0);
+  sample->Init(isolate->main_port(), 0, 0);
   sample->set_metadata(99);
   sample->set_is_allocation_sample(true);
   EXPECT_EQ(99, sample->allocation_cid());
   delete sample_buffer;
 }
 
 
 static RawClass* GetClass(const Library& lib, const char* name) {
   const Class& cls = Class::Handle(lib.LookupClassAllowPrivate(
       String::Handle(Symbols::New(Thread::Current(), name))));
   EXPECT(!cls.IsNull());  // No ambiguity error expected.
   return cls.raw();
 }
 
 
 static RawFunction* GetFunction(const Library& lib, const char* name) {
   const Function& func = Function::Handle(lib.LookupFunctionAllowPrivate(
       String::Handle(Symbols::New(Thread::Current(), name))));
   EXPECT(!func.IsNull());  // No ambiguity error expected.
   return func.raw();
 }
 
 
 class AllocationFilter : public SampleFilter {
  public:
-  AllocationFilter(Isolate* isolate,
+  AllocationFilter(Dart_Port port,
                    intptr_t cid,
                    int64_t time_origin_micros = -1,
                    int64_t time_extent_micros = -1)
-      : SampleFilter(isolate,
+      : SampleFilter(port,
                      Thread::kMutatorTask,
                      time_origin_micros,
                      time_extent_micros),
         cid_(cid),
         enable_vm_ticks_(false) {}
 
   bool FilterSample(Sample* sample) {
     if (!enable_vm_ticks_ && (sample->vm_tag() == VMTag::kVMTagId)) {
       // We don't want to see embedder ticks in the test.
       return false;
@@ skipping 41 matching lines @@
   const int64_t after_allocations_micros = Dart_TimelineGetMicros();
   const int64_t allocation_extent_micros =
       after_allocations_micros - before_allocations_micros;
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
     // Filter for the class in the time range.
-    AllocationFilter filter(isolate, class_a.id(), before_allocations_micros,
+    AllocationFilter filter(isolate->main_port(), class_a.id(),
+                            before_allocations_micros,
                             allocation_extent_micros);
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have 1 allocation sample.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     // Exclusive code: B.boo -> main.
     walker.Reset(Profile::kExclusiveCode);
     // Move down from the root.
     EXPECT(walker.Down());
@@ skipping 46 matching lines @@
     EXPECT(!walker.Down());
   }
 
   // Query with a time filter where no allocations occurred.
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id(), Dart_TimelineGetMicros(),
-                            16000);
+    AllocationFilter filter(isolate->main_port(), class_a.id(),
+                            Dart_TimelineGetMicros(), 16000);
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have no allocation samples because none occured within
     // the specified time range.
     EXPECT_EQ(0, profile.sample_count());
   }
 }
 
 
 TEST_CASE(Profiler_ToggleRecordAllocation) {
   DisableNativeProfileScope dnps;
@@ skipping 22 matching lines @@
   Dart_Handle result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
 
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have no allocation samples.
     EXPECT_EQ(0, profile.sample_count());
   }
 
   // Turn on allocation tracing for A.
   class_a.SetTraceAllocation(true);
 
   result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     // Exclusive code: B.boo -> main.
     walker.Reset(Profile::kExclusiveCode);
     // Move down from the root.
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateObject", walker.CurrentName());
@@ skipping 50 matching lines @@
 
   result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should still only have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
   }
 }
 
 
 TEST_CASE(Profiler_CodeTicks) {
   DisableNativeProfileScope dnps;
   const char* kScript =
@@ skipping 20 matching lines @@
 
   Dart_Handle result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have no allocation samples.
     EXPECT_EQ(0, profile.sample_count());
   }
 
   // Turn on allocation tracing for A.
   class_a.SetTraceAllocation(true);
 
   // Allocate three times.
   result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
   result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
   result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have three allocation samples.
     EXPECT_EQ(3, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     // Exclusive code: B.boo -> main.
     walker.Reset(Profile::kExclusiveCode);
     // Move down from the root.
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateObject", walker.CurrentName());
@@ skipping 59 matching lines @@
 
   Dart_Handle result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have no allocation samples.
     EXPECT_EQ(0, profile.sample_count());
   }
 
   // Turn on allocation tracing for A.
   class_a.SetTraceAllocation(true);
 
   // Allocate three times.
   result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
   result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
   result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have three allocation samples.
     EXPECT_EQ(3, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     // Exclusive function: B.boo -> main.
     walker.Reset(Profile::kExclusiveFunction);
     // Move down from the root.
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateObject", walker.CurrentName());
@@ skipping 50 matching lines @@
       Dart_NewDouble(1.0), Dart_NewDouble(2.0),
   };
 
   Dart_Handle result = Dart_Invoke(lib, NewString("foo"), 2, &args[0]);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, double_class.id());
+    AllocationFilter filter(isolate->main_port(), double_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have no allocation samples.
     EXPECT_EQ(0, profile.sample_count());
   }
 
   double_class.SetTraceAllocation(true);
   result = Dart_Invoke(lib, NewString("foo"), 2, &args[0]);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, double_class.id());
+    AllocationFilter filter(isolate->main_port(), double_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     walker.Reset(Profile::kExclusiveCode);
     EXPECT(walker.Down());
     EXPECT_STREQ("Double_add", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("_Double._add", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("_Double.+", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("foo", walker.CurrentName());
     EXPECT(!walker.Down());
   }
 
   double_class.SetTraceAllocation(false);
   result = Dart_Invoke(lib, NewString("foo"), 2, &args[0]);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, double_class.id());
+    AllocationFilter filter(isolate->main_port(), double_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should still only have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
   }
 }
 
 
 TEST_CASE(Profiler_ArrayAllocation) {
   DisableNativeProfileScope dnps;
   const char* kScript =
       "List foo() => new List(4);\n"
       "List bar() => new List();\n";
   Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
   EXPECT_VALID(lib);
   Library& root_library = Library::Handle();
   root_library ^= Api::UnwrapHandle(lib);
   Isolate* isolate = thread->isolate();
 
   const Class& array_class =
       Class::Handle(isolate->object_store()->array_class());
   EXPECT(!array_class.IsNull());
 
   Dart_Handle result = Dart_Invoke(lib, NewString("foo"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, array_class.id());
+    AllocationFilter filter(isolate->main_port(), array_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have no allocation samples.
     EXPECT_EQ(0, profile.sample_count());
   }
 
   array_class.SetTraceAllocation(true);
   result = Dart_Invoke(lib, NewString("foo"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, array_class.id());
+    AllocationFilter filter(isolate->main_port(), array_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     walker.Reset(Profile::kExclusiveCode);
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateArray", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("[Stub] AllocateArray", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("_List._List", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("List.List._internal", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("foo", walker.CurrentName());
     EXPECT(!walker.Down());
   }
 
   array_class.SetTraceAllocation(false);
   result = Dart_Invoke(lib, NewString("foo"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, array_class.id());
+    AllocationFilter filter(isolate->main_port(), array_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should still only have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
   }
 
   // Clear the samples.
   ProfilerService::ClearSamples();
 
   // Compile bar (many List objects allocated).
   result = Dart_Invoke(lib, NewString("bar"), 0, NULL);
   EXPECT_VALID(result);
 
   // Enable again.
   array_class.SetTraceAllocation(true);
 
   // Run bar.
   result = Dart_Invoke(lib, NewString("bar"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, array_class.id());
+    AllocationFilter filter(isolate->main_port(), array_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should still only have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     walker.Reset(Profile::kExclusiveCode);
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateArray", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("[Stub] AllocateArray", walker.CurrentName());
@@ skipping 27 matching lines @@
   const Class& context_class = Class::Handle(Object::context_class());
   EXPECT(!context_class.IsNull());
 
   Dart_Handle result = Dart_Invoke(lib, NewString("foo"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, context_class.id());
+    AllocationFilter filter(isolate->main_port(), context_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have no allocation samples.
     EXPECT_EQ(0, profile.sample_count());
   }
 
   context_class.SetTraceAllocation(true);
   result = Dart_Invoke(lib, NewString("foo"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, context_class.id());
+    AllocationFilter filter(isolate->main_port(), context_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     walker.Reset(Profile::kExclusiveCode);
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateContext", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("[Stub] AllocateContext", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("foo", walker.CurrentName());
     EXPECT(!walker.Down());
   }
 
   context_class.SetTraceAllocation(false);
   result = Dart_Invoke(lib, NewString("foo"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, context_class.id());
+    AllocationFilter filter(isolate->main_port(), context_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should still only have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
   }
 }
 
 
 TEST_CASE(Profiler_ClosureAllocation) {
   DisableNativeProfileScope dnps;
   const char* kScript =
@@ skipping 22 matching lines @@
   closure_class.SetTraceAllocation(true);
 
   // Invoke "foo" which during compilation, triggers a closure allocation.
   Dart_Handle result = Dart_Invoke(lib, NewString("foo"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, closure_class.id());
+    AllocationFilter filter(isolate->main_port(), closure_class.id());
     filter.set_enable_vm_ticks(true);
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     walker.Reset(Profile::kExclusiveCode);
     EXPECT(walker.Down());
     EXPECT_SUBSTRING("DRT_AllocateObject", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("[Stub] Allocate _Closure", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_SUBSTRING("foo", walker.CurrentName());
     EXPECT(!walker.Down());
   }
 
   // Disable allocation tracing for Closure.
   closure_class.SetTraceAllocation(false);
 
   // Invoke "bar" which during compilation, triggers a closure allocation.
   result = Dart_Invoke(lib, NewString("bar"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, closure_class.id());
+    AllocationFilter filter(isolate->main_port(), closure_class.id());
     filter.set_enable_vm_ticks(true);
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should still only have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
   }
 }
 
 
 TEST_CASE(Profiler_TypedArrayAllocation) {
   DisableNativeProfileScope dnps;
@@ skipping 13 matching lines @@
       Class::Handle(GetClass(typed_data_library, "_Float32List"));
   EXPECT(!float32_list_class.IsNull());
 
   Dart_Handle result = Dart_Invoke(lib, NewString("foo"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, float32_list_class.id());
+    AllocationFilter filter(isolate->main_port(), float32_list_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have no allocation samples.
     EXPECT_EQ(0, profile.sample_count());
   }
 
   float32_list_class.SetTraceAllocation(true);
   result = Dart_Invoke(lib, NewString("foo"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, float32_list_class.id());
+    AllocationFilter filter(isolate->main_port(), float32_list_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     walker.Reset(Profile::kExclusiveCode);
     EXPECT(walker.Down());
     EXPECT_STREQ("TypedData_Float32Array_new", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("Float32List.Float32List", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("foo", walker.CurrentName());
     EXPECT(!walker.Down());
   }
 
   float32_list_class.SetTraceAllocation(false);
   result = Dart_Invoke(lib, NewString("foo"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, float32_list_class.id());
+    AllocationFilter filter(isolate->main_port(), float32_list_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should still only have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
   }
 
   float32_list_class.SetTraceAllocation(true);
   result = Dart_Invoke(lib, NewString("foo"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, float32_list_class.id());
+    AllocationFilter filter(isolate->main_port(), float32_list_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should now have two allocation samples.
     EXPECT_EQ(2, profile.sample_count());
   }
 }
 
 
 TEST_CASE(Profiler_StringAllocation) {
   DisableNativeProfileScope dnps;
   const char* kScript = "String foo(String a, String b) => a + b;";
@@ skipping 11 matching lines @@
       NewString("a"), NewString("b"),
   };
 
   Dart_Handle result = Dart_Invoke(lib, NewString("foo"), 2, &args[0]);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, one_byte_string_class.id());
+    AllocationFilter filter(isolate->main_port(), one_byte_string_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have no allocation samples.
     EXPECT_EQ(0, profile.sample_count());
   }
 
   one_byte_string_class.SetTraceAllocation(true);
   result = Dart_Invoke(lib, NewString("foo"), 2, &args[0]);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, one_byte_string_class.id());
+    AllocationFilter filter(isolate->main_port(), one_byte_string_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should still only have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     walker.Reset(Profile::kExclusiveCode);
     EXPECT(walker.Down());
     EXPECT_STREQ("String_concat", walker.CurrentName());
     EXPECT(walker.Down());
 #if 1
     EXPECT_STREQ("_StringBase.+", walker.CurrentName());
     EXPECT(walker.Down());
 #endif
     EXPECT_STREQ("foo", walker.CurrentName());
     EXPECT(!walker.Down());
   }
 
   one_byte_string_class.SetTraceAllocation(false);
   result = Dart_Invoke(lib, NewString("foo"), 2, &args[0]);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, one_byte_string_class.id());
+    AllocationFilter filter(isolate->main_port(), one_byte_string_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should still only have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
   }
 
   one_byte_string_class.SetTraceAllocation(true);
   result = Dart_Invoke(lib, NewString("foo"), 2, &args[0]);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, one_byte_string_class.id());
+    AllocationFilter filter(isolate->main_port(), one_byte_string_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should now have two allocation samples.
     EXPECT_EQ(2, profile.sample_count());
   }
 }
 
 
 TEST_CASE(Profiler_StringInterpolation) {
   DisableNativeProfileScope dnps;
   DisableBackgroundCompilationScope dbcs;
@@ skipping 12 matching lines @@
       NewString("a"), NewString("b"),
   };
 
   Dart_Handle result = Dart_Invoke(lib, NewString("foo"), 2, &args[0]);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, one_byte_string_class.id());
+    AllocationFilter filter(isolate->main_port(), one_byte_string_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have no allocation samples.
     EXPECT_EQ(0, profile.sample_count());
   }
 
   one_byte_string_class.SetTraceAllocation(true);
   result = Dart_Invoke(lib, NewString("foo"), 2, &args[0]);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, one_byte_string_class.id());
+    AllocationFilter filter(isolate->main_port(), one_byte_string_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should still only have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     walker.Reset(Profile::kExclusiveCode);
     EXPECT(walker.Down());
     EXPECT_STREQ("OneByteString_allocate", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("_OneByteString._allocate", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("_OneByteString._concatAll", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("_StringBase._interpolate", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("foo", walker.CurrentName());
     EXPECT(!walker.Down());
   }
 
   one_byte_string_class.SetTraceAllocation(false);
   result = Dart_Invoke(lib, NewString("foo"), 2, &args[0]);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, one_byte_string_class.id());
+    AllocationFilter filter(isolate->main_port(), one_byte_string_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should still only have one allocation sample.
     EXPECT_EQ(1, profile.sample_count());
   }
 
   one_byte_string_class.SetTraceAllocation(true);
   result = Dart_Invoke(lib, NewString("foo"), 2, &args[0]);
   EXPECT_VALID(result);
 
   {
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, one_byte_string_class.id());
+    AllocationFilter filter(isolate->main_port(), one_byte_string_class.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should now have two allocation samples.
     EXPECT_EQ(2, profile.sample_count());
   }
 }
 
 
 TEST_CASE(Profiler_FunctionInline) {
   DisableNativeProfileScope dnps;
   DisableBackgroundCompilationScope dbcs;
@@ skipping 39 matching lines @@
   result = Dart_Invoke(lib, NewString("mainA"), 0, NULL);
   EXPECT_VALID(result);
   // At this point B.boo should be optimized and inlined B.foo and B.choo.
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have no allocation samples.
     EXPECT_EQ(0, profile.sample_count());
   }
 
   // Turn on allocation tracing for A.
   class_a.SetTraceAllocation(true);
 
   // Allocate 50,000 instances of A.
   result = Dart_Invoke(lib, NewString("mainA"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have 50,000 allocation samples.
     EXPECT_EQ(50000, profile.sample_count());
     ProfileTrieWalker walker(&profile);
     // We have two code objects: mainA and B.boo.
     walker.Reset(Profile::kExclusiveCode);
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateObject", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("[Stub] Allocate A", walker.CurrentName());
@@ skipping 97 matching lines @@
     EXPECT(!walker.Down());
   }
 
   // Test code transition tags.
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags,
                   ProfilerService::kCodeTransitionTagsBit);
     // We should have 50,000 allocation samples.
     EXPECT_EQ(50000, profile.sample_count());
     ProfileTrieWalker walker(&profile);
     // We have two code objects: mainA and B.boo.
     walker.Reset(Profile::kExclusiveCode);
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateObject", walker.CurrentName());
     EXPECT(walker.Down());
@@ skipping 152 matching lines @@
   EXPECT(!func.is_inlinable());
   func = GetFunction(root_library, "maybeAlloc");
   EXPECT(!func.is_inlinable());
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have no allocation samples.
     EXPECT_EQ(0, profile.sample_count());
   }
 
   // Turn on allocation tracing for A.
   class_a.SetTraceAllocation(true);
 
   result = Dart_Invoke(lib, NewString("mainAlloc"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     // Inline expansion should show us the complete call chain:
     walker.Reset(Profile::kExclusiveFunction);
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateObject", walker.CurrentName());
     EXPECT(walker.Down());
     EXPECT_STREQ("[Stub] Allocate A", walker.CurrentName());
@@ skipping 78 matching lines @@
   Dart_Handle result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
 
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have 1 allocation sample.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     walker.Reset(Profile::kExclusiveCode);
     // Move down from the root.
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateObject", walker.CurrentName());
     EXPECT(walker.Down());
@@ skipping 81 matching lines @@
   // Allocate one time.
   result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have one allocation samples.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     // Exclusive function: B.boo -> main.
     walker.Reset(Profile::kExclusiveFunction);
     // Move down from the root.
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateObject", walker.CurrentName());
@@ skipping 73 matching lines @@
   // Still optimized.
   const Code& code = Code::Handle(main.CurrentCode());
   EXPECT(code.is_optimized());
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have one allocation samples.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     // Exclusive function: B.boo -> main.
     walker.Reset(Profile::kExclusiveFunction);
     // Move down from the root.
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateObject", walker.CurrentName());
@@ skipping 66 matching lines @@
   // Allocate one time.
   result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have one allocation samples.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     // Exclusive function: B.boo -> main.
     walker.Reset(Profile::kExclusiveFunction);
     // Move down from the root.
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateObject", walker.CurrentName());
@@ skipping 104 matching lines @@
   // Still optimized.
   const Code& code = Code::Handle(main.CurrentCode());
   EXPECT(code.is_optimized());
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have one allocation samples.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     // Exclusive function: B.boo -> main.
     walker.Reset(Profile::kExclusiveFunction);
     // Move down from the root.
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateObject", walker.CurrentName());
@@ skipping 87 matching lines @@
   // Allocate one time.
   result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have one allocation samples.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     // Exclusive function: B.boo -> main.
     walker.Reset(Profile::kExclusiveFunction);
     // Move down from the root.
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateObject", walker.CurrentName());
@@ skipping 113 matching lines @@
   // Still optimized.
   const Code& code = Code::Handle(main.CurrentCode());
   EXPECT(code.is_optimized());
 
   {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone zone(thread);
     HANDLESCOPE(thread);
     Profile profile(isolate);
-    AllocationFilter filter(isolate, class_a.id());
+    AllocationFilter filter(isolate->main_port(), class_a.id());
     profile.Build(thread, &filter, Profile::kNoTags);
     // We should have one allocation samples.
     EXPECT_EQ(1, profile.sample_count());
     ProfileTrieWalker walker(&profile);
 
     // Exclusive function: B.boo -> main.
     walker.Reset(Profile::kExclusiveFunction);
     // Move down from the root.
     EXPECT(walker.Down());
     EXPECT_STREQ("DRT_AllocateObject", walker.CurrentName());
@@ skipping 38 matching lines @@
     EXPECT(!walker.Down());
   }
 }
 
 
 static void InsertFakeSample(SampleBuffer* sample_buffer, uword* pc_offsets) {
   ASSERT(sample_buffer != NULL);
   Isolate* isolate = Isolate::Current();
   Sample* sample = sample_buffer->ReserveSample();
   ASSERT(sample != NULL);
-  sample->Init(isolate, OS::GetCurrentMonotonicMicros(),
+  sample->Init(isolate->main_port(), OS::GetCurrentMonotonicMicros(),
                OSThread::Current()->trace_id());
   sample->set_thread_task(Thread::kMutatorTask);
 
   intptr_t i = 0;
   while (pc_offsets[i] != 0) {
     // When we collect a real stack trace, all PCs collected aside from the
     // executing one (i == 0) are actually return addresses. Return addresses
     // are one byte beyond the call instruction that is executing. The profiler
     // accounts for this and subtracts one from these addresses when querying
     // inline and token position ranges. To be consistent with real stack
@@ skipping 152 matching lines @@
   EXPECT_SUBSTRING("\"positions\":[\"TempMove\",39]", js.ToCString());
   // Verify exclusive ticks in main.
   EXPECT_SUBSTRING("\"exclusiveTicks\":[1,0]", js.ToCString());
   // Verify inclusive ticks in main.
   EXPECT_SUBSTRING("\"inclusiveTicks\":[1,2]", js.ToCString());
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart