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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /js/src/gc/StoreBuffer-inl.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/gc/StoreBuffer-inl.h')
-rw-r--r--js/src/gc/StoreBuffer-inl.h97
1 files changed, 97 insertions, 0 deletions
diff --git a/js/src/gc/StoreBuffer-inl.h b/js/src/gc/StoreBuffer-inl.h
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+/* -*- 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