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Reland "cppgc: Enable checks for assignments in prefinalizers"

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This is a reland of edcc8ff5b5

Cause for previous revert was addressed by crbug.com/1241773.

Original change's description:
> cppgc: Enable checks for assignments in prefinalizers
>
> Bug: v8:11749
> Change-Id: Ic027f732030fb6a2befeffeca9db2eacfd0830a5
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3099953
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Omer Katz <omerkatz@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#76370}

Bug: v8:11749
Change-Id: I57fc138ace002d41e54f7f70250e4d19bc9262b0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3122153
Auto-Submit: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76553}
This commit is contained in:
Omer Katz 2021-08-18 15:17:06 +02:00 committed by V8 LUCI CQ
parent 8fa3b4aed6
commit adb6276f4a
5 changed files with 4 additions and 17 deletions
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1
BUILD.bazel
View File

@ -165,7 +165,6 @@ config_setting(
# v8_control_flow_integrity
# v8_enable_virtual_memory_cage
# cppgc_enable_caged_heap
# cppgc_enable_check_assignments_in_prefinalizers
# cppgc_enable_object_names
# cppgc_enable_verify_heap
# cppgc_enable_young_generation

8
BUILD.gn
View File

@ -293,10 +293,6 @@ declare_args() {
# Enables additional heap verification phases and checks.
cppgc_enable_verify_heap = ""
# Enable assignment checks for Members/Persistents during prefinalizer invocations.
# TODO(v8:11749): Enable by default after fixing any existing issues in Blink.
cppgc_enable_check_assignments_in_prefinalizers = false
# Enable young generation in cppgc.
cppgc_enable_young_generation = false
@ -780,10 +776,6 @@ config("features") {
defines += [ "CPPGC_VERIFY_HEAP" ]
}
if (cppgc_enable_check_assignments_in_prefinalizers) {
defines += [ "CPPGC_CHECK_ASSIGNMENTS_IN_PREFINALIZERS" ]
}
if (v8_embedder_string != "") {
defines += [ "V8_EMBEDDER_STRING=\"$v8_embedder_string\"" ]
}

4
src/heap/cppgc/pointer-policies.cc
View File

@ -68,7 +68,7 @@ void EnabledCheckingPolicy::CheckPointerImpl(const void* ptr,
DCHECK(!header->IsFree());
}
#ifdef CPPGC_CHECK_ASSIGNMENTS_IN_PREFINALIZERS
#ifdef CPPGC_VERIFY_HEAP
if (heap_->prefinalizer_handler()->IsInvokingPreFinalizers()) {
// During prefinalizers invocation, check that |ptr| refers to a live object
// and that it is assigned to a live slot.
@ -81,7 +81,7 @@ void EnabledCheckingPolicy::CheckPointerImpl(const void* ptr,
DCHECK(slot_is_live);
USE(slot_is_live);
}
#endif // CPPGC_CHECK_ASSIGNMENTS_IN_PREFINALIZERS
#endif // CPPGC_VERIFY_HEAP
}
PersistentRegion& StrongPersistentPolicy::GetPersistentRegion(

4
test/unittests/heap/cppgc/prefinalizer-unittest.cc
View File

@ -285,7 +285,7 @@ class GCedHolder : public GarbageCollected<GCedHolder> {
} // namespace
#if V8_ENABLE_CHECKS
#ifdef CPPGC_CHECK_ASSIGNMENTS_IN_PREFINALIZERS
#ifdef CPPGC_VERIFY_HEAP
TEST_F(PrefinalizerDeathTest, PrefinalizerCantRewireGraphWithDeadObjects) {
Persistent<LinkedNode> root{MakeGarbageCollected<LinkedNode>(
@ -318,7 +318,7 @@ TEST_F(PrefinalizerDeathTest, PrefinalizerCantRessurectObjectOnHeap) {
EXPECT_DEATH_IF_SUPPORTED(PreciseGC(), "");
}
#endif // CPPGC_CHECK_ASSIGNMENTS_IN_PREFINALIZERS
#endif // CPPGC_VERIFY_HEAP
#endif // V8_ENABLE_CHECKS
} // namespace internal

4
tools/cppgc/gen_cmake.py
View File

@ -245,7 +245,6 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
option(CPPGC_ENABLE_OBJECT_NAMES "Enable object names in cppgc for debug purposes" OFF)
option(CPPGC_ENABLE_CAGED_HEAP "Enable heap reservation of size 4GB, only possible for 64bit archs" OFF)
option(CPPGC_ENABLE_VERIFY_HEAP "Enables additional heap verification phases and checks" OFF)
option(CPPGC_CHECK_ASSIGNMENTS_IN_PREFINALIZERS " Enable assignment checks for Members/Persistents during prefinalizer invocations" OFF)
option(CPPGC_ENABLE_YOUNG_GENERATION "Enable young generation in cppgc" OFF)
set(CPPGC_TARGET_ARCH "x64" CACHE STRING "Target architecture, possible options: x64, x86, arm, arm64, ppc64, s390x, mipsel, mips64el")
@ -438,9 +437,6 @@ endif()
if(CPPGC_ENABLE_VERIFY_HEAP)
target_compile_definitions({target.name} PRIVATE "-DCPPGC_ENABLE_VERIFY_HEAP")
endif()
if(CPPGC_CHECK_ASSIGNMENTS_IN_PREFINALIZERS)
target_compile_definitions({target.name} PRIVATE "-DCPPGC_CHECK_ASSIGNMENTS_IN_PREFINALIZERS")
endif()
if(CPPGC_ENABLE_YOUNG_GENERATION)
target_compile_definitions({target.name} PRIVATE "-DCPPGC_YOUNG_GENERATION")
endif()"""