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disable pointer compression (#1593)

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snek 2024-08-27 17:52:27 -07:00 committed by GitHub
parent df6b8092cc
commit 48800f8216
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2 changed files with 2 additions and 8 deletions
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2
.gn
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@ -38,6 +38,8 @@ default_args = {
v8_use_external_startup_data = false
v8_use_snapshot = true
v8_enable_pointer_compression = false
# This flag speeds up the performance of fork/execve on Linux systems for
# embedders which use it (like Node.js). It works by marking the pages that
# V8 allocates as MADV_DONTFORK. Without MADV_DONTFORK, the Linux kernel

8
src/binding.cc
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@ -3367,14 +3367,6 @@ void v8__HeapProfiler__TakeHeapSnapshot(v8::Isolate* isolate,
const_cast<v8::HeapSnapshot*>(snapshot)->Delete();
}
// This is necessary for v8__internal__GetIsolateFromHeapObject() to be
// reliable enough for our purposes.
#if UINTPTR_MAX == 0xffffffffffffffff && \
!(defined V8_SHARED_RO_HEAP or defined V8_COMPRESS_POINTERS)
#error V8 must be built with either the 'v8_enable_pointer_compression' or \
'v8_enable_shared_ro_heap' feature enabled.
#endif
v8::Isolate* v8__internal__GetIsolateFromHeapObject(const v8::Data& data) {
namespace i = v8::internal;
i::Tagged<i::Object> object(reinterpret_cast<const i::Address&>(data));