Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 97 insertions, 0 deletions

diff --git a/js/src/gc/StoreBuffer-inl.h b/js/src/gc/StoreBuffer-inl.h
new file mode 100644
index 0000000000..1c97654761
--- /dev/null
+++ b/js/src/gc/StoreBuffer-inl.h
@@ -0,0 +1,97 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef gc_StoreBuffer_inl_h
+#define gc_StoreBuffer_inl_h
+
+#include "gc/StoreBuffer.h"
+
+#include "gc/Cell.h"
+#include "gc/Heap.h"
+
+#include "gc/Heap-inl.h"
+
+namespace js {
+namespace gc {
+
+inline /* static */ size_t ArenaCellSet::getCellIndex(const TenuredCell* cell) {
+  uintptr_t cellOffset = uintptr_t(cell) & ArenaMask;
+  MOZ_ASSERT(cellOffset % ArenaCellIndexBytes == 0);
+  return cellOffset / ArenaCellIndexBytes;
+}
+
+inline /* static */ void ArenaCellSet::getWordIndexAndMask(size_t cellIndex,
+                                                           size_t* wordp,
+                                                           uint32_t* maskp) {
+  BitArray<MaxArenaCellIndex>::getIndexAndMask(cellIndex, wordp, maskp);
+}
+
+inline bool ArenaCellSet::hasCell(size_t cellIndex) const {
+  MOZ_ASSERT(cellIndex < MaxArenaCellIndex);
+  return bits.get(cellIndex);
+}
+
+inline void ArenaCellSet::putCell(size_t cellIndex) {
+  MOZ_ASSERT(cellIndex < MaxArenaCellIndex);
+  MOZ_ASSERT(arena);
+
+  bits.set(cellIndex);
+  check();
+}
+
+inline void ArenaCellSet::check() const {
+#ifdef DEBUG
+  bool bitsZero = bits.isAllClear();
+  MOZ_ASSERT(isEmpty() == bitsZero);
+  MOZ_ASSERT(isEmpty() == !arena);
+  if (!isEmpty()) {
+    MOZ_ASSERT(IsCellPointerValid(arena));
+    MOZ_ASSERT(arena->bufferedCells() == this);
+    JSRuntime* runtime = arena->zone->runtimeFromMainThread();
+    MOZ_ASSERT(runtime->gc.minorGCCount() == minorGCNumberAtCreation);
+  }
+#endif
+}
+
+inline void StoreBuffer::WholeCellBuffer::put(const Cell* cell) {
+  if (cell != last_) {
+    putDontCheckLast(cell);
+  }
+}
+
+inline void StoreBuffer::WholeCellBuffer::putDontCheckLast(const Cell* cell) {
+  // This can still be called when |cell == last_| if the caller didn't check
+  // and that's OK.
+
+  MOZ_ASSERT(cell->isTenured());
+
+  // BigInts don't have any children, so shouldn't show up here.
+  MOZ_ASSERT(cell->getTraceKind() != JS::TraceKind::BigInt);
+
+  Arena* arena = cell->asTenured().arena();
+  ArenaCellSet* cells = arena->bufferedCells();
+  if (cells->isEmpty()) {
+    cells = allocateCellSet(arena);
+    if (!cells) {
+      return;
+    }
+  }
+
+  cells->putCell(&cell->asTenured());
+  cells->check();
+
+  last_ = cell;
+}
+
+inline void StoreBuffer::putWholeCell(Cell* cell) { bufferWholeCell.put(cell); }
+inline void StoreBuffer::putWholeCellDontCheckLast(Cell* cell) {
+  bufferWholeCell.putDontCheckLast(cell);
+}
+
+}  // namespace gc
+}  // namespace js
+
+#endif  // gc_StoreBuffer_inl_h