Thanks a lot! There is no crash after modifying the code. Can I add a
friend with you for further discussion about V8？
在2020年11月24日星期二 UTC+8 下午11:03:54<Qingyan Li> 写道：
> Got the same problem And here is what I found:
>
> The root cause is that the ReadOnlyHeap section in snapshot do not match
> between the one creating codecache and the one loading codecache.
> CodeSerializer encodes readonly objects as chunk-index/offset of the
> ReadOnlySpace, so decoding codecache against unmatched snapshot would cause
> error.
>
> And the unmatch is caused by Heap::single_character_string_cache(), the
> content of this cache vary depending on scripts runned by SnapshotCreator.
> When StartupSerializer visits single_character_string_cache, it calls
> SerializeUsingReadOnlyObjectCache to serialize readonly objects. So the
> order of
> readonly objects varies.
>
> Here is a patch I think would mitigate this problem.
>
> diff --git a/src/snapshot/read-only-serializer.cc
> b/src/snapshot/read-only-serializer.cc
> index 06c5094782..1e13232150 100644
> --- a/src/snapshot/read-only-serializer.cc
> +++ b/src/snapshot/read-only-serializer.cc
> @@ -66,6 +66,23 @@ void
> ReadOnlySerializer::SerializeObjectImpl(Handle<HeapObject> obj) {
> #endif
> }
>
> +namespace {
> +
> +void ResetSingleCharacterStringCache(Isolate* isolate) {
> + DisallowGarbageCollection no_gc;
> + FixedArray cache = isolate->heap()->single_character_string_cache();
> + HeapObject undefined = ReadOnlyRoots(isolate).undefined_value();
> +
> + for (int i = 0; i < cache.length(); ++i) {
> + HeapObject obj = HeapObject::cast(cache.get(i));
> + if (ReadOnlyHeap::Contains(obj) && obj.IsInternalizedString()) {
> + cache.set(i, undefined);
> + }
> + }
> +}
> +
> +}
> +
> void ReadOnlySerializer::SerializeReadOnlyRoots() {
> // No active threads.
> CHECK_NULL(isolate()->thread_manager()->FirstThreadStateInUse());
> @@ -73,6 +90,8 @@ void ReadOnlySerializer::SerializeReadOnlyRoots() {
> CHECK_IMPLIES(!allow_active_isolate_for_testing(),
>
> isolate()->handle_scope_implementer()->blocks()->empty());
>
> + ResetSingleCharacterStringCache(isolate());
> +
> ReadOnlyRoots(isolate()).Iterate(this);
> }
>
>
> On Monday, November 23, 2020 at 1:49:00 PM UTC+8 [email protected] wrote:
>
>> I try to use both snapshot and codecache to reduce page load time. All
>> going well when I use snapshot or codecache alone. However, when I create
>> codecache for index.js with an engine without snapshot first, then create
>> snapshot for startup.js, then create an engine loading index.js with both
>> snapshot and codecache, crash occurs. Here is stacktrace:
>>
>> [image: Pasted Graphic.png]
>>
>> com.facebook.react.JavaScript (61)#0 0x000000010c7f9a16 in bool
>> v8::internal::IsInRange<v8::internal::InstanceType,
>> v8::internal::InstanceType>(v8::internal::InstanceType,
>> v8::internal::InstanceType, v8::internal::InstanceType) [inlined] at
>> /Volumes/EXTREME SSD/Documents/depot_tools/v8/v8/src/utils/utils.h:69
>>
>> #1 0x000000010c7f9a16 in
>> v8::internal::InstanceTypeChecker::IsString(v8::internal::InstanceType)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/objects/instance-type-inl.h:33
>>
>> #2 0x000000010c7f9a16 in
>> v8::internal::HeapObject::IsString(v8::internal::Isolate*) const [inlined]
>> at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/objects/instance-type-inl.h:64
>>
>> #3 0x000000010c7f9a12 in
>> v8::internal::HeapObject::IsThinString(v8::internal::Isolate*) const
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/objects/objects-inl.h:205
>>
>> #4 0x000000010c7f9a12 in v8::internal::HeapObject::IsThinString() const
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/objects/objects-inl.h:204
>>
>> #5 0x000000010c7f9a12 in
>> v8::internal::Deserializer::GetBackReferencedObject(v8::internal::SnapshotSpace)
>>
>> at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:364
>>
>> #6 0x000000010c7f89b8 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)8,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:813
>>
>> #7 0x000000010c7f899a in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:579
>>
>> #8 0x000000010c7faa8d in
>> v8::internal::Deserializer::ReadObject(v8::internal::SnapshotSpace) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:394
>>
>> #9 0x000000010c7f89d4 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)0,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:810
>>
>> #10 0x000000010c7f89ba in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:576
>>
>> #11 0x000000010c7faa8d in
>> v8::internal::Deserializer::ReadObject(v8::internal::SnapshotSpace) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:394
>>
>> #12 0x000000010c7f89d4 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)0,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:810
>>
>> #13 0x000000010c7f89ba in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:576
>>
>> #14 0x000000010c7faa8d in
>> v8::internal::Deserializer::ReadObject(v8::internal::SnapshotSpace) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:394
>>
>> #15 0x000000010c7f89d4 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)0,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:810
>>
>> #16 0x000000010c7f89ba in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:576
>>
>> #17 0x000000010c7faa8d in
>> v8::internal::Deserializer::ReadObject(v8::internal::SnapshotSpace) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:394
>>
>> #18 0x000000010c7f89d4 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)0,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:810
>>
>> #19 0x000000010c7f89ba in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:576
>>
>> #20 0x000000010c7faa8d in
>> v8::internal::Deserializer::ReadObject(v8::internal::SnapshotSpace) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:394
>>
>> #21 0x000000010c7f89d4 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)0,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:810
>>
>> #22 0x000000010c7f89ba in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:576
>>
>> #23 0x000000010c7faa8d in
>> v8::internal::Deserializer::ReadObject(v8::internal::SnapshotSpace) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:394
>>
>> #24 0x000000010c7f89d4 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)0,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:810
>>
>> #25 0x000000010c7f89ba in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:576
>>
>> #26 0x000000010c7faa8d in
>> v8::internal::Deserializer::ReadObject(v8::internal::SnapshotSpace) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:394
>>
>> #27 0x000000010c7f89d4 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)0,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:810
>>
>> #28 0x000000010c7f89ba in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:576
>>
>> #29 0x000000010c7faa8d in
>> v8::internal::Deserializer::ReadObject(v8::internal::SnapshotSpace) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:394
>>
>> #30 0x000000010c7f89d4 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)0,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:810
>>
>> #31 0x000000010c7f89ba in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:576
>>
>> #32 0x000000010c7faa8d in
>> v8::internal::Deserializer::ReadObject(v8::internal::SnapshotSpace) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:394
>>
>> #33 0x000000010c7f89d4 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)0,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:810
>>
>> #34 0x000000010c7f89ba in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:576
>>
>> #35 0x000000010c7faa8d in
>> v8::internal::Deserializer::ReadObject(v8::internal::SnapshotSpace) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:394
>>
>> #36 0x000000010c7f89d4 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)0,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:810
>>
>> #37 0x000000010c7f89ba in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:576
>>
>> #38 0x000000010c7faa8d in
>> v8::internal::Deserializer::ReadObject(v8::internal::SnapshotSpace) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:394
>>
>> #39 0x000000010c7f89d4 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)0,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:810
>>
>> #40 0x000000010c7f89ba in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:576
>>
>> #41 0x000000010c7faa8d in
>> v8::internal::Deserializer::ReadObject(v8::internal::SnapshotSpace) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:394
>>
>> #42 0x000000010c7f89d4 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)0,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:810
>>
>> #43 0x000000010c7f89ba in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:576
>>
>> #44 0x000000010c7faa8d in
>> v8::internal::Deserializer::ReadObject(v8::internal::SnapshotSpace) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:394
>>
>> #45 0x000000010c7f89d4 in v8::internal::FullMaybeObjectSlot
>> v8::internal::Deserializer::ReadDataCase<v8::internal::FullMaybeObjectSlot,
>> (v8::internal::SerializerDeserializer::Bytecode)0,
>> (v8::internal::SnapshotSpace)6>(v8::internal::Isolate*,
>> v8::internal::FullMaybeObjectSlot, unsigned long, unsigned char, bool)
>> [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:810
>>
>> #46 0x000000010c7f89ba in bool
>> v8::internal::Deserializer::ReadData<v8::internal::FullMaybeObjectSlot>(v8::internal::FullMaybeObjectSlot,
>>
>> v8::internal::FullMaybeObjectSlot, v8::internal::SnapshotSpace, unsigned
>> long) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/deserializer.cc:576
>>
>> #47 0x000000010c7fc244 in
>> v8::internal::RootVisitor::VisitRootPointer(v8::internal::Root, char
>> const*, v8::internal::FullObjectSlot) [inlined] at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/objects/visitors.h:73
>>
>> #48 0x000000010c7fc22c in
>> v8::internal::ObjectDeserializer::Deserialize(v8::internal::Isolate*) at
>> /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/object-deserializer.cc:45
>>
>> #49 0x000000010c7fc070 in
>> v8::internal::ObjectDeserializer::DeserializeSharedFunctionInfo(v8::internal::Isolate*,
>>
>> v8::internal::SerializedCodeData const*,
>> v8::internal::Handle<v8::internal::String>) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/object-deserializer.cc:29
>>
>> #50 0x000000010c7f6e70 in
>> v8::internal::CodeSerializer::Deserialize(v8::internal::Isolate*,
>> v8::internal::ScriptData*, v8::internal::Handle<v8::internal::String>,
>> v8::ScriptOriginOptions) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/snapshot/code-serializer.cc:289
>>
>> #51 0x000000010c42971a in
>> v8::internal::Compiler::GetSharedFunctionInfoForScript(v8::internal::Isolate*,
>>
>> v8::internal::Handle<v8::internal::String>,
>> v8::internal::Compiler::ScriptDetails const&, v8::ScriptOriginOptions,
>> v8::Extension*, v8::internal::ScriptData*,
>> v8::ScriptCompiler::CompileOptions, v8::ScriptCompiler::NoCacheReason,
>> v8::internal::NativesFlag) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/codegen/compiler.cc:2024
>>
>> #52 0x000000010c398b1a in
>> v8::ScriptCompiler::CompileUnboundInternal(v8::Isolate*,
>> v8::ScriptCompiler::Source*, v8::ScriptCompiler::CompileOptions,
>> v8::ScriptCompiler::NoCacheReason) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/api/api.cc:2435
>>
>> #53 0x000000010c39909f in
>> v8::ScriptCompiler::Compile(v8::Local<v8::Context>,
>> v8::ScriptCompiler::Source*, v8::ScriptCompiler::CompileOptions,
>> v8::ScriptCompiler::NoCacheReason) at /Volumes/EXTREME
>> SSD/Documents/depot_tools/v8/v8/src/api/api.cc:2466
>>
>> #54 0x000000010c36ed77 in
>> facebook::V8Runtime::ExecuteScript(v8::Isolate*, v8::Local<v8::String>
>> const&, std::__1::basic_string<char, std::__1::char_traits<char>,
>> std::__1::allocator<char> > const&) at
>> /Users/wangzitong/Documents/v8executor/src/v8runtime/V8Runtime.mm:317
>>
>> #55 0x000000010c371131 in
>> facebook::V8Runtime::evaluateJavaScript(std::__1::shared_ptr<facebook::jsi::Buffer
>>
>> const> const&, std::__1::basic_string<char, std::__1::char_traits<char>,
>> std::__1::allocator<char> > const&) at
>> /Users/wangzitong/Documents/v8executor/src/v8runtime/V8Runtime.mm:746
>>
>> #56 0x000000010a762f72 in
>> facebook::react::JSIExecutor::loadApplicationScript(std::__1::unique_ptr<facebook::react::JSBigString
>>
>> const, std::__1::default_delete<facebook::react::JSBigString const> >,
>> std::__1::basic_string<char, std::__1::char_traits<char>,
>> std::__1::allocator<char> >) at
>> /Users/wangzitong/Documents/imeituan/Pods/React-jsiexecutor/src/jsireact/JSIExecutor.cpp:126
>>
>> #57 0x000000010a73a3f9 in
>> facebook::react::NativeToJsBridge::loadApplication(std::__1::unique_ptr<facebook::react::RAMBundleRegistry,
>>
>> std::__1::default_delete<facebook::react::RAMBundleRegistry> >,
>> std::__1::unique_ptr<facebook::react::JSBigString const,
>> std::__1::default_delete<facebook::react::JSBigString const> >,
>> std::__1::basic_string<char, std::__1::char_traits<char>,
>> std::__1::allocator<char> >)::$_0::operator()(facebook::react::JSExecutor*)
>> at
>> /Users/wangzitong/Documents/imeituan/Pods/React-cxxreact/src/NativeToJsBridge.cpp:119
>>
>> #58 0x000000010a73a2a2 in
>> decltype(std::__1::forward<facebook::react::NativeToJsBridge::loadApplication(std::__1::unique_ptr<facebook::react::RAMBundleRegistry,
>>
>> std::__1::default_delete<facebook::react::RAMBundleRegistry> >,
>> std::__1::unique_ptr<facebook::react::JSBigString const,
>> std::__1::default_delete<facebook::react::JSBigString const> >,
>> std::__1::basic_string<char, std::__1::char_traits<char>,
>> std::__1::allocator<char>
>> >)::$_0&>(fp)(std::__1::forward<facebook::react::JSExecutor*>(fp0)))
>> std::__1::__invoke<facebook::react::NativeToJsBridge::loadApplication(std::__1::unique_ptr<facebook::react::RAMBundleRegistry,
>>
>> std::__1::default_delete<facebook::react::RAMBundleRegistry> >,
>> std::__1::unique_ptr<facebook::react::JSBigString const,
>> std::__1::default_delete<facebook::react::JSBigString const> >,
>> std::__1::basic_string<char, std::__1::char_traits<char>,
>> std::__1::allocator<char> >)::$_0&,
>> facebook::react::JSExecutor*>(facebook::react::NativeToJsBridge::loadApplication(std::__1::unique_ptr<facebook::react::RAMBundleRegistry,
>>
>> std::__1::default_delete<facebook::react::RAMBundleRegistry> >,
>> std::__1::unique_ptr<facebook::react::JSBigString const,
>> std::__1::default_delete<facebook::react::JSBigString const> >,
>> std::__1::basic_string<char, std::__1::char_traits<char>,
>> std::__1::allocator<char> >)::$_0&, facebook::react::JSExecutor*&&) at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/type_traits:3545
>>
>> #59 0x000000010a73a242 in void
>> std::__1::__invoke_void_return_wrapper<void>::__call<facebook::react::NativeToJsBridge::loadApplication(std::__1::unique_ptr<facebook::react::RAMBundleRegistry,
>>
>> std::__1::default_delete<facebook::react::RAMBundleRegistry> >,
>> std::__1::unique_ptr<facebook::react::JSBigString const,
>> std::__1::default_delete<facebook::react::JSBigString const> >,
>> std::__1::basic_string<char, std::__1::char_traits<char>,
>> std::__1::allocator<char> >)::$_0&,
>> facebook::react::JSExecutor*>(facebook::react::NativeToJsBridge::loadApplication(std::__1::unique_ptr<facebook::react::RAMBundleRegistry,
>>
>> std::__1::default_delete<facebook::react::RAMBundleRegistry> >,
>> std::__1::unique_ptr<facebook::react::JSBigString const,
>> std::__1::default_delete<facebook::react::JSBigString const> >,
>> std::__1::basic_string<char, std::__1::char_traits<char>,
>> std::__1::allocator<char> >)::$_0&, facebook::react::JSExecutor*&&) at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/__functional_base:348
>>
>> #60 0x000000010a73a1f2 in
>> std::__1::__function::__alloc_func<facebook::react::NativeToJsBridge::loadApplication(std::__1::unique_ptr<facebook::react::RAMBundleRegistry,
>>
>> std::__1::default_delete<facebook::react::RAMBundleRegistry> >,
>> std::__1::unique_ptr<facebook::react::JSBigString const,
>> std::__1::default_delete<facebook::react::JSBigString const> >,
>> std::__1::basic_string<char, std::__1::char_traits<char>,
>> std::__1::allocator<char> >)::$_0,
>> std::__1::allocator<facebook::react::NativeToJsBridge::loadApplication(std::__1::unique_ptr<facebook::react::RAMBundleRegistry,
>>
>> std::__1::default_delete<facebook::react::RAMBundleRegistry> >,
>> std::__1::unique_ptr<facebook::react::JSBigString const,
>> std::__1::default_delete<facebook::react::JSBigString const> >,
>> std::__1::basic_string<char, std::__1::char_traits<char>,
>> std::__1::allocator<char> >)::$_0>, void
>> (facebook::react::JSExecutor*)>::operator()(facebook::react::JSExecutor*&&)
>> at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:1546
>>
>> #61 0x000000010a738cb3 in
>> std::__1::__function::__func<facebook::react::NativeToJsBridge::loadApplication(std::__1::unique_ptr<facebook::react::RAMBundleRegistry,
>>
>> std::__1::default_delete<facebook::react::RAMBundleRegistry> >,
>> std::__1::unique_ptr<facebook::react::JSBigString const,
>> std::__1::default_delete<facebook::react::JSBigString const> >,
>> std::__1::basic_string<char, std::__1::char_traits<char>,
>> std::__1::allocator<char> >)::$_0,
>> std::__1::allocator<facebook::react::NativeToJsBridge::loadApplication(std::__1::unique_ptr<facebook::react::RAMBundleRegistry,
>>
>> std::__1::default_delete<facebook::react::RAMBundleRegistry> >,
>> std::__1::unique_ptr<facebook::react::JSBigString const,
>> std::__1::default_delete<facebook::react::JSBigString const> >,
>> std::__1::basic_string<char, std::__1::char_traits<char>,
>> std::__1::allocator<char> >)::$_0>, void
>> (facebook::react::JSExecutor*)>::operator()(facebook::react::JSExecutor*&&)
>> at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:1720
>>
>> #62 0x000000010a74601d in std::__1::__function::__value_func<void
>> (facebook::react::JSExecutor*)>::operator()(facebook::react::JSExecutor*&&)
>> const at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:1873
>>
>> #63 0x000000010a745fa0 in std::__1::function<void
>> (facebook::react::JSExecutor*)>::operator()(facebook::react::JSExecutor*)
>> const at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:2548
>>
>> #64 0x000000010a745f68 in
>> facebook::react::NativeToJsBridge::runOnExecutorQueue(std::__1::function<void
>>
>> (facebook::react::JSExecutor*)>)::$_7::operator()() const at
>> /Users/wangzitong/Documents/imeituan/Pods/React-cxxreact/src/NativeToJsBridge.cpp:269
>>
>> #65 0x000000010a745edd in
>> decltype(std::__1::forward<facebook::react::NativeToJsBridge::runOnExecutorQueue(std::__1::function<void
>>
>> (facebook::react::JSExecutor*)>)::$_7&>(fp)())
>> std::__1::__invoke<facebook::react::NativeToJsBridge::runOnExecutorQueue(std::__1::function<void
>>
>> (facebook::react::JSExecutor*)>)::$_7&>(facebook::react::NativeToJsBridge::runOnExecutorQueue(std::__1::function<void
>>
>> (facebook::react::JSExecutor*)>)::$_7&) at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/type_traits:3545
>>
>> #66 0x000000010a745e8d in void
>> std::__1::__invoke_void_return_wrapper<void>::__call<facebook::react::NativeToJsBridge::runOnExecutorQueue(std::__1::function<void
>>
>> (facebook::react::JSExecutor*)>)::$_7&>(facebook::react::NativeToJsBridge::runOnExecutorQueue(std::__1::function<void
>>
>> (facebook::react::JSExecutor*)>)::$_7&) at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/__functional_base:348
>>
>> #67 0x000000010a745e5d in
>> std::__1::__function::__alloc_func<facebook::react::NativeToJsBridge::runOnExecutorQueue(std::__1::function<void
>>
>> (facebook::react::JSExecutor*)>)::$_7,
>> std::__1::allocator<facebook::react::NativeToJsBridge::runOnExecutorQueue(std::__1::function<void
>>
>> (facebook::react::JSExecutor*)>)::$_7>, void ()>::operator()() at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:1546
>>
>> #68 0x000000010a7449be in
>> std::__1::__function::__func<facebook::react::NativeToJsBridge::runOnExecutorQueue(std::__1::function<void
>>
>> (facebook::react::JSExecutor*)>)::$_7,
>> std::__1::allocator<facebook::react::NativeToJsBridge::runOnExecutorQueue(std::__1::function<void
>>
>> (facebook::react::JSExecutor*)>)::$_7>, void ()>::operator()() at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:1720
>>
>> #69 0x000000010a5c6755 in std::__1::__function::__value_func<void
>> ()>::operator()() const at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:1873
>>
>> #70 0x000000010a5c5e15 in std::__1::function<void ()>::operator()()
>> const at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:2548
>>
>> #71 0x000000010a5c5b88 in
>> facebook::react::tryAndReturnError(std::__1::function<void ()> const&) at
>> /Users/wangzitong/Documents/imeituan/Pods/React/React/CxxModule/RCTCxxUtils.mm:72
>>
>> #72 0x000000010a61ccd1 in
>> facebook::react::RCTMessageThread::tryFunc(std::__1::function<void ()>
>> const&) at
>> /Users/wangzitong/Documents/imeituan/Pods/React/React/CxxBridge/RCTMessageThread.mm:59
>>
>> #73 0x000000010a621d43 in
>> facebook::react::RCTMessageThread::runOnQueue(std::__1::function<void
>> ()>&&)::$_1::operator()() const at
>> /Users/wangzitong/Documents/imeituan/Pods/React/React/CxxBridge/RCTMessageThread.mm:72
>>
>> #74 0x000000010a621ccd in
>> decltype(std::__1::forward<facebook::react::RCTMessageThread::runOnQueue(std::__1::function<void
>>
>> ()>&&)::$_1&>(fp)())
>> std::__1::__invoke<facebook::react::RCTMessageThread::runOnQueue(std::__1::function<void
>>
>> ()>&&)::$_1&>(facebook::react::RCTMessageThread::runOnQueue(std::__1::function<void
>>
>> ()>&&)::$_1&) at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/type_traits:3545
>>
>> #75 0x000000010a621c7d in void
>> std::__1::__invoke_void_return_wrapper<void>::__call<facebook::react::RCTMessageThread::runOnQueue(std::__1::function<void
>>
>> ()>&&)::$_1&>(facebook::react::RCTMessageThread::runOnQueue(std::__1::function<void
>>
>> ()>&&)::$_1&) at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/__functional_base:348
>>
>> #76 0x000000010a621c4d in
>> std::__1::__function::__alloc_func<facebook::react::RCTMessageThread::runOnQueue(std::__1::function<void
>>
>> ()>&&)::$_1,
>> std::__1::allocator<facebook::react::RCTMessageThread::runOnQueue(std::__1::function<void
>>
>> ()>&&)::$_1>, void ()>::operator()() at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:1546
>>
>> #77 0x000000010a6207ae in
>> std::__1::__function::__func<facebook::react::RCTMessageThread::runOnQueue(std::__1::function<void
>>
>> ()>&&)::$_1,
>> std::__1::allocator<facebook::react::RCTMessageThread::runOnQueue(std::__1::function<void
>>
>> ()>&&)::$_1>, void ()>::operator()() at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:1720
>>
>> #78 0x000000010a5c6755 in std::__1::__function::__value_func<void
>> ()>::operator()() const at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:1873
>>
>> #79 0x000000010a5c5e15 in std::__1::function<void ()>::operator()()
>> const at
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:2548
>>
>> #80 0x000000010a61c92c in invocation function for block in
>> facebook::react::RCTMessageThread::runAsync(std::__1::function<void ()>) at
>> /Users/wangzitong/Documents/imeituan/Pods/React/React/CxxBridge/RCTMessageThread.mm:39
>>
>> #81 0x00007fff203a85db in __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ ()
>>
>> #82 0x00007fff203a79ef in __CFRunLoopDoBlocks ()
>>
>> #83 0x00007fff203a2a6d in __CFRunLoopRun ()
>>
>> #84 0x00007fff203a1b9e in CFRunLoopRunSpecific ()
>>
>> #85 0x000000010a596071 in +[RCTCxxBridge runRunLoop] at
>> /Users/wangzitong/Documents/imeituan/Pods/React/React/CxxBridge/RCTCxxBridge.mm:272
>>
>> #86 0x00007fff2086f521 in __NSThread__start__ ()
>>
>> #87 0x00007fff5dcdc109 in _pthread_start ()
>>
>> #88 0x00007fff5dcd7b8b in thread_start ()
>>
>>
>> And I have digged out some facts:
>>
>> 1. If codecache is created with an engine that is already attached with a
>> snapshot, not an empty engine, no crash.
>>
>> 2. If I annotate some code below in startup.js, no crash.
>>
>> function shouldUseNative() {
>> var test3 = {};
>> 'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
>> test3[letter] = letter;
>> });
>> if (Object.keys(test3).join('') !== 'abcdefghijklmnopqrst') {
>> return false;
>> }
>> return true;
>> }
>> shouldUseNative();
>>
>>
>> V8 version:*7.8.279.23*
>>
>> Can someone know what causes the crash? Thanks.
>>
>
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