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Refactor 'v8__internal__GetIsolateFromHeapObject' (#415)

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It turns out that using `v8::internal::MaybeObject` was, although
harmless, not appropriate here, because this function does not deal
deal with (potentially) weak handles.
This commit is contained in:
Bert Belder 2020-07-05 17:28:13 +02:00
parent 82d0287028
commit 2b11a57d47
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GPG key ID: 7A77887B2E2ED461
1 changed files with 11 additions and 13 deletions
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24
src/binding.cc
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@ -10,7 +10,8 @@
#include "v8/include/v8.h"
#include "v8/src/execution/isolate-utils-inl.h"
#include "v8/src/execution/isolate-utils.h"
#include "v8/src/objects/maybe-object.h"
#include "v8/src/objects/objects-inl.h"
#include "v8/src/objects/objects.h"
using namespace support;
@ -1720,18 +1721,15 @@ void v8__HeapProfiler__TakeHeapSnapshot(v8::Isolate* isolate,
'v8_enable_shared_ro_heap' feature enabled.
#endif
v8::Isolate* v8__internal__GetIsolateFromHeapObject(const v8::Data& location) {
auto address = *reinterpret_cast<const v8::internal::Address*>(&location);
auto maybe_object = v8::internal::MaybeObject(address);
if (maybe_object.IsSmi() || maybe_object.IsCleared()) {
return nullptr;
}
auto heap_object = maybe_object.GetHeapObject();
v8::internal::Isolate* isolate;
if (!v8::internal::GetIsolateFromHeapObject(heap_object, &isolate)) {
return nullptr;
}
return reinterpret_cast<v8::Isolate*>(isolate);
v8::Isolate* v8__internal__GetIsolateFromHeapObject(const v8::Data& data) {
namespace i = v8::internal;
i::Object object(reinterpret_cast<const i::Address&>(data));
i::Isolate* isolate;
return object.IsHeapObject() &&
i::GetIsolateFromHeapObject(object.GetHeapObject(), &isolate)
? reinterpret_cast<v8::Isolate*>(isolate)
: nullptr;
}
}
} // extern "C"