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Fixes. Now compiles and links, still crashes at atoms zone similar previous nursery strings.

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Fixes. Now compiles and links, still crashes at atoms zone similar previous nursery strings.
This commit is contained in:
win7-7 2026-01-15 06:50:04 +02:00 • committed by wuggy
commit f50af06b74
6 changed files with 24 additions and 17 deletions
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12
js/src/gc/Allocator.cpp
View file

@ -215,18 +215,6 @@ js::Allocate(ExclusiveContext* cx)
AllocKind kind = MapTypeToFinalizeKind<T>::kind;
size_t thingSize = sizeof(T);
// === ADD DETAILED DIAGNOSTIC OUTPUT HERE ===
size_t arenaSize = Arena::thingSize(kind);
fprintf(stderr, "\n=== GC Allocation Debug ===\n");
fprintf(stderr, "Type name: %s\n", typeid(T).name());
fprintf(stderr, "sizeof(T): %zu bytes\n", thingSize);
fprintf(stderr, "Arena::thingSize(kind): %zu bytes\n", arenaSize);
fprintf(stderr, "CellAlignBytes: %zu bytes\n", CellAlignBytes);
fprintf(stderr, "Match: %s\n", (thingSize == arenaSize) ? "YES" : "NO - MISMATCH!");
fprintf(stderr, "Size difference: %zd bytes\n", (size_t)thingSize - (size_t)arenaSize);
fprintf(stderr, "========================\n\n");
MOZ_ASSERT(thingSize == Arena::thingSize(kind));
if (cx->isJSContext()) {

16
js/src/gc/GCInternals.h
View file

@ -147,6 +147,22 @@ struct MOZ_RAII AutoAssertNoNurseryAlloc
#endif
};
// Note that this class does not suppress buffer allocation/reallocation in the
// nursery, only Cells themselves.
class MOZ_RAII AutoSuppressNurseryCellAlloc
{
JSContext* cx_;
public:
explicit AutoSuppressNurseryCellAlloc(JSContext* cx) : cx_(cx) {
cx_->nurserySuppressions_++;
}
~AutoSuppressNurseryCellAlloc() {
cx_->nurserySuppressions_--;
}
};
/*
* There are a couple of classes here that serve mostly as "tokens" indicating
* that a condition holds. Some functions force the caller to possess such a

5
js/src/gc/Marking.cpp
View file

@ -1774,7 +1774,9 @@ GCMarker::processMarkStackTop(SliceBudget& budget)
} else if (v.isBigInt()) {
traverseEdge(obj, v.toBigInt());
} else if (v.isPrivateGCThing()) {
traverseEdge(obj, v.toGCCellPtr());
// v.toGCCellPtr cannot be inlined, so construct one manually.
Cell* cell = v.toGCThing();
traverseEdge(obj, JS::GCCellPtr(cell, cell->getTraceKind()));
}
}
return;
@ -2713,6 +2715,7 @@ inline void
js::TenuringTracer::traceSlots(JS::Value* vp, uint32_t nslots)
{
traceSlots(vp, vp + nslots);
}
void
js::TenuringTracer::traceString(JSString* str)

4
js/src/gc/Nursery.cpp
View file

@ -840,9 +840,9 @@ js::Nursery::doCollection(JS::gcreason::Reason reason,
}
endProfile(ProfileKey::MarkDebugger);
maybeStartProfile(ProfileKey::SweepCaches);
startProfile(ProfileKey::SweepCaches);
rt->gc.purgeRuntimeForMinorGC();
maybeEndProfile(ProfileKey::SweepCaches);
endProfile(ProfileKey::SweepCaches);
// Most of the work is done here. This loop iterates over objects that have
// been moved to the major heap. If these objects have any outgoing pointers

2
js/src/gc/Verifier.cpp
View file

@ -540,7 +540,7 @@ CheckHeapTracer::onChild(const JS::GCCellPtr& thing)
else
zone = cell->asTenured().zone();
if (zone->group() && zone->group()->usedByHelperThread)
if (zone->group() && zone->group()->usedByHelperThread())
return;
}

2
js/src/jsgc.cpp
View file

@ -4782,7 +4782,7 @@ NextIncomingCrossCompartmentPointer(JSObject* prev, bool unlink)
}
void
js::DelayCrossCompartmentGrayMarking(JSObject* src)
js::gc::DelayCrossCompartmentGrayMarking(JSObject* src)
{
MOZ_ASSERT(IsGrayListObject(src));