Make test-heap resilient against --stress-compaction.

test/cctest/test-heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 
 #include <stdlib.h>
 
 #include "v8.h"
 
 #include "execution.h"
 #include "factory.h"
 #include "macro-assembler.h"
 #include "global-handles.h"
@@ skipping 397 matching lines @@
   HEAP->CollectGarbage(OLD_POINTER_SPACE);
 
   CHECK((*h1)->IsString());
 
   CHECK(WeakPointerCleared);
   CHECK(!GlobalHandles::IsNearDeath(h1.location()));
 
   global_handles->Destroy(h1.location());
 }
 
+
 TEST(DeleteWeakGlobalHandle) {
   InitializeVM();
   GlobalHandles* global_handles = Isolate::Current()->global_handles();
 
   WeakPointerCleared = false;
 
   Handle<Object> h;
 
   {
     HandleScope scope;
@@ skipping 10 matching lines @@
   HEAP->PerformScavenge();
 
   CHECK(!WeakPointerCleared);
 
   // Mark-compact treats weak reference properly.
   HEAP->CollectGarbage(OLD_POINTER_SPACE);
 
   CHECK(WeakPointerCleared);
 }
 
+
 static const char* not_so_random_string_table[] = {
   "abstract",
   "boolean",
   "break",
   "byte",
   "case",
   "catch",
   "char",
   "class",
   "const",
@@ skipping 816 matching lines @@
   for (intptr_t i = 0; i < number_of_fillers; i++) {
     CHECK(HEAP->InNewSpace(*FACTORY->NewFixedArray(32, NOT_TENURED)));
   }
 }
 
 
 TEST(GrowAndShrinkNewSpace) {
   InitializeVM();
   NewSpace* new_space = HEAP->new_space();
 
-  if (HEAP->ReservedSemiSpaceSize() == HEAP->InitialSemiSpaceSize()) {
+  if (HEAP->ReservedSemiSpaceSize() == HEAP->InitialSemiSpaceSize() ||
+      HEAP->MaxSemiSpaceSize() == HEAP->InitialSemiSpaceSize()) {
     // The max size cannot exceed the reserved size, since semispaces must be
     // always within the reserved space.  We can't test new space growing and
     // shrinking if the reserved size is the same as the minimum (initial) size.
     return;
   }
 
   // Explicitly growing should double the space capacity.
   intptr_t old_capacity, new_capacity;
   old_capacity = new_space->Capacity();
   new_space->Grow();
@@ skipping 27 matching lines @@
   new_space->Shrink();
   new_space->Shrink();
   new_capacity = new_space->Capacity();
   CHECK(old_capacity == new_capacity);
 }
 
 
 TEST(CollectingAllAvailableGarbageShrinksNewSpace) {
   InitializeVM();
 
-  if (HEAP->ReservedSemiSpaceSize() == HEAP->InitialSemiSpaceSize()) {
+  if (HEAP->ReservedSemiSpaceSize() == HEAP->InitialSemiSpaceSize() ||
+      HEAP->MaxSemiSpaceSize() == HEAP->InitialSemiSpaceSize()) {
     // The max size cannot exceed the reserved size, since semispaces must be
     // always within the reserved space.  We can't test new space growing and
     // shrinking if the reserved size is the same as the minimum (initial) size.
     return;
   }
 
   v8::HandleScope scope;
   NewSpace* new_space = HEAP->new_space();
   intptr_t old_capacity, new_capacity;
   old_capacity = new_space->Capacity();
@@ skipping 406 matching lines @@
 }
 
 
 // Test that map transitions are cleared and maps are collected with
 // incremental marking as well.
 TEST(Regress1465) {
   i::FLAG_allow_natives_syntax = true;
   i::FLAG_trace_incremental_marking = true;
   InitializeVM();
   v8::HandleScope scope;
+  static const int transitions_count = 256;
 
-  #define TRANSITION_COUNT 256
-  for (int i = 0; i < TRANSITION_COUNT; i++) {
-    EmbeddedVector<char, 64> buffer;
-    OS::SNPrintF(buffer, "var o = new Object; o.prop%d = %d;", i, i);
-    CompileRun(buffer.start());
+  {
+    AlwaysAllocateScope always_allocate;
+    for (int i = 0; i < transitions_count; i++) {
+      EmbeddedVector<char, 64> buffer;
+      OS::SNPrintF(buffer, "var o = new Object; o.prop%d = %d;", i, i);
+      CompileRun(buffer.start());
+    }
+    CompileRun("var root = new Object;");
   }
-  CompileRun("var root = new Object;");
+
   Handle<JSObject> root =
       v8::Utils::OpenHandle(
           *v8::Handle<v8::Object>::Cast(
               v8::Context::GetCurrent()->Global()->Get(v8_str("root"))));
 
   // Count number of live transitions before marking.
   int transitions_before = CountMapTransitions(root->map());
   CompileRun("%DebugPrint(root);");
-  CHECK_EQ(TRANSITION_COUNT, transitions_before);
+  CHECK_EQ(transitions_count, transitions_before);
 
   // Go through all incremental marking steps in one swoop.
   IncrementalMarking* marking = HEAP->incremental_marking();
   CHECK(marking->IsStopped());
   marking->Start();
   CHECK(marking->IsMarking());
   while (!marking->IsComplete()) {
     marking->Step(MB, IncrementalMarking::NO_GC_VIA_STACK_GUARD);
   }
   CHECK(marking->IsComplete());
   HEAP->CollectAllGarbage(Heap::kNoGCFlags);
-  CHECK(marking->IsStopped());
 
   // Count number of live transitions after marking.  Note that one transition
   // is left, because 'o' still holds an instance of one transition target.
   int transitions_after = CountMapTransitions(root->map());
   CompileRun("%DebugPrint(root);");
   CHECK_EQ(1, transitions_after);
 }
 
 
 TEST(Regress2143a) {
@@ skipping 25 matching lines @@
              "  o.foo = 0;"
              "}"
              "f(new Object);"
              "f(root);");
 
   // This bug only triggers with aggressive IC clearing.
   HEAP->AgeInlineCaches();
 
   // Explicitly request GC to perform final marking step and sweeping.
   HEAP->CollectAllGarbage(Heap::kNoGCFlags);
-  CHECK(marking->IsStopped());
 
   Handle<JSObject> root =
       v8::Utils::OpenHandle(
           *v8::Handle<v8::Object>::Cast(
               v8::Context::GetCurrent()->Global()->Get(v8_str("root"))));
 
   // The root object should be in a sane state.
   CHECK(root->IsJSObject());
   CHECK(root->map()->IsMap());
 }
@@ skipping 32 matching lines @@
              "f(new Object);"
              "%OptimizeFunctionOnNextCall(f);"
              "f(root);"
              "%DeoptimizeFunction(f);");
 
   // This bug only triggers with aggressive IC clearing.
   HEAP->AgeInlineCaches();
 
   // Explicitly request GC to perform final marking step and sweeping.
   HEAP->CollectAllGarbage(Heap::kNoGCFlags);
-  CHECK(marking->IsStopped());
 
   Handle<JSObject> root =
       v8::Utils::OpenHandle(
           *v8::Handle<v8::Object>::Cast(
               v8::Context::GetCurrent()->Global()->Get(v8_str("root"))));
 
   // The root object should be in a sane state.
   CHECK(root->IsJSObject());
   CHECK(root->map()->IsMap());
 }
@@ skipping 167 matching lines @@
   // Go through all incremental marking steps in one swoop.
   IncrementalMarking* marking = HEAP->incremental_marking();
   CHECK(marking->IsStopped());
   marking->Start();
   CHECK(marking->IsMarking());
   while (!marking->IsComplete()) {
     marking->Step(MB, IncrementalMarking::NO_GC_VIA_STACK_GUARD);
   }
   CHECK(marking->IsComplete());
   HEAP->CollectAllGarbage(Heap::kNoGCFlags);
-  CHECK(marking->IsStopped());
 
   CHECK_EQ(2, cells->CellCount());
   CHECK(cells->Cell(0)->value()->IsTheHole());
   CHECK(cells->Cell(1)->value()->IsTheHole());
 }