[test, heap] Skip tests when shared RO space is disabled

Bug: v8:11966
Change-Id: I3e5fe6e9d53938793c7f66cd05b4dcfe3073c22f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3015568Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75652}

src/execution/isolate.cc

@@ -2901,6 +2901,7 @@ Isolate* Isolate::New() { return Isolate::Allocate(false); }
 
 // static
 Isolate* Isolate::NewShared(const v8::Isolate::CreateParams& params) {
+  DCHECK(ReadOnlyHeap::IsReadOnlySpaceShared());
   Isolate* isolate = Isolate::Allocate(true);
   v8::Isolate::Initialize(reinterpret_cast<v8::Isolate*>(isolate), params);
   return isolate;

test/cctest/heap/test-shared-heap.cc

@@ -6,6 +6,7 @@
 #include "src/common/globals.h"
 #include "src/handles/handles-inl.h"
 #include "src/heap/heap.h"
+#include "src/heap/read-only-spaces.h"
 #include "src/objects/fixed-array-inl.h"
 #include "src/objects/fixed-array.h"
 #include "src/objects/heap-object.h"
@@ -63,6 +64,7 @@ class SharedOldSpaceAllocationThread final : public v8::base::Thread {
 }  // namespace
 
 UNINITIALIZED_TEST(ConcurrentAllocationInSharedOldSpace) {
+  if (!ReadOnlyHeap::IsReadOnlySpaceShared()) return;
   std::unique_ptr<v8::ArrayBuffer::Allocator> allocator(
       v8::ArrayBuffer::Allocator::NewDefaultAllocator());
 
@@ -118,6 +120,7 @@ class SharedMapSpaceAllocationThread final : public v8::base::Thread {
 }  // namespace
 
 UNINITIALIZED_TEST(ConcurrentAllocationInSharedMapSpace) {
+  if (!ReadOnlyHeap::IsReadOnlySpaceShared()) return;
   std::unique_ptr<v8::ArrayBuffer::Allocator> allocator(
       v8::ArrayBuffer::Allocator::NewDefaultAllocator());
 
@@ -143,6 +146,7 @@ UNINITIALIZED_TEST(ConcurrentAllocationInSharedMapSpace) {
 }
 
 UNINITIALIZED_TEST(SharedCollectionWithoutClients) {
+  if (!ReadOnlyHeap::IsReadOnlySpaceShared()) return;
   std::unique_ptr<v8::ArrayBuffer::Allocator> allocator(
       v8::ArrayBuffer::Allocator::NewDefaultAllocator());
 
@@ -183,6 +187,7 @@ void AllocateInSharedSpace(Isolate* shared_isolate) {
 
 UNINITIALIZED_TEST(SharedCollectionWithOneClient) {
   FLAG_max_old_space_size = 8;
+  if (!ReadOnlyHeap::IsReadOnlySpaceShared()) return;
   std::unique_ptr<v8::ArrayBuffer::Allocator> allocator(
       v8::ArrayBuffer::Allocator::NewDefaultAllocator());