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chore: disable V8 pointer compression (#1214)

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Bartek Iwańczuk 2023-04-25 22:17:27 +02:00 committed by GitHub
parent 64c26f853b
commit 07f2e9f3b6
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2 changed files with 6 additions and 8 deletions
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6
.gn
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@ -50,4 +50,10 @@ default_args = {
# This is problematic for Deno, which has separate "runtime" and "typescript # This is problematic for Deno, which has separate "runtime" and "typescript
# compiler" snapshots, and sometimes uses them both at the same time. # compiler" snapshots, and sometimes uses them both at the same time.
v8_enable_shared_ro_heap = false v8_enable_shared_ro_heap = false
# V8 introduced a bug in 11.1 that causes the External Pointer Table to never
# be cleaned which causes resource exhaustion. Disabling pointer compression
# makes sure that the EPT is not used.
# https://bugs.chromium.org/p/v8/issues/detail?id=13640&q=garbage%20collection&can=2
v8_enable_pointer_compression = false
} }

8
src/binding.cc
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@ -2913,14 +2913,6 @@ void v8__HeapProfiler__TakeHeapSnapshot(v8::Isolate* isolate,
const_cast<v8::HeapSnapshot*>(snapshot)->Delete(); 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) { v8::Isolate* v8__internal__GetIsolateFromHeapObject(const v8::Data& data) {
namespace i = v8::internal; namespace i = v8::internal;
i::Object object(reinterpret_cast<const i::Address&>(data)); i::Object object(reinterpret_cast<const i::Address&>(data));