Update V8 to version 4.1.0.21
This is a cherry-pick of all commits up to and including the
4.1.0.21 cherry-pick in Chromium.
Original commit message:
Version 4.1.0.21 (cherry-pick)
Merged 206e9136bde0f2b5ae8cb77afbb1e7833e5bd412
Unlink pages from the space page list after evacuation.
BUG=430201
LOG=N
R=jkummerow@chromium.org
Review URL: https://codereview.chromium.org/953813002
Cr-Commit-Position: refs/branch-heads/4.1@{#22}
Cr-Branched-From: 2e08d2a7aa9d65d269d8c57aba82eb38a8cb0a18-refs/heads/candidates@{#25353}
---
FPIIM-449
Change-Id: I8c23c7bbb70772b4858fe8a47b64fa97ee0d1f8c
diff --git a/src/base/atomicops_internals_portable.h b/src/base/atomicops_internals_portable.h
new file mode 100644
index 0000000..a3a6e74
--- /dev/null
+++ b/src/base/atomicops_internals_portable.h
@@ -0,0 +1,138 @@
+// Copyright 2012 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This file is an internal atomic implementation, use atomicops.h instead.
+
+#ifndef V8_BASE_ATOMICOPS_INTERNALS_PORTABLE_H_
+#define V8_BASE_ATOMICOPS_INTERNALS_PORTABLE_H_
+
+namespace v8 {
+namespace base {
+
+inline void MemoryBarrier() { __sync_synchronize(); }
+
+inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr,
+ Atomic32 old_value,
+ Atomic32 new_value) {
+ return __sync_val_compare_and_swap(ptr, old_value, new_value);
+}
+
+inline Atomic32 NoBarrier_AtomicExchange(volatile Atomic32* ptr,
+ Atomic32 new_value) {
+ return __sync_lock_test_and_set(ptr, new_value);
+}
+
+inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr,
+ Atomic32 increment) {
+ return __sync_add_and_fetch(ptr, increment);
+}
+
+inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
+ Atomic32 increment) {
+ return __sync_add_and_fetch(ptr, increment);
+}
+
+inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
+ Atomic32 old_value, Atomic32 new_value) {
+ return __sync_val_compare_and_swap(ptr, old_value, new_value);
+}
+
+inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
+ Atomic32 old_value, Atomic32 new_value) {
+ return __sync_val_compare_and_swap(ptr, old_value, new_value);
+}
+
+inline void NoBarrier_Store(volatile Atomic8* ptr, Atomic8 value) {
+ __sync_lock_test_and_set(ptr, value);
+}
+
+inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
+ __sync_lock_test_and_set(ptr, value);
+}
+
+inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
+ __sync_lock_test_and_set(ptr, value);
+}
+
+inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
+ __sync_lock_test_and_set(ptr, value);
+}
+
+inline Atomic8 NoBarrier_Load(volatile const Atomic8* ptr) {
+ return __sync_add_and_fetch(ptr, 0);
+}
+
+inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) {
+ return __sync_add_and_fetch(ptr, 0);
+}
+
+inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
+ return __sync_add_and_fetch(ptr, 0);
+}
+
+inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
+ return __sync_add_and_fetch(ptr, 0);
+}
+
+// 64-bit versions of the operations.
+// See the 32-bit versions for comments.
+
+inline Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64* ptr,
+ Atomic64 old_value,
+ Atomic64 new_value) {
+ return __sync_val_compare_and_swap(ptr, old_value, new_value);
+}
+
+inline Atomic64 NoBarrier_AtomicExchange(volatile Atomic64* ptr,
+ Atomic64 new_value) {
+ return __sync_lock_test_and_set(ptr, new_value);
+}
+
+inline Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64* ptr,
+ Atomic64 increment) {
+ return __sync_add_and_fetch(ptr, increment);
+}
+
+inline Atomic64 Barrier_AtomicIncrement(volatile Atomic64* ptr,
+ Atomic64 increment) {
+ return __sync_add_and_fetch(ptr, increment);
+}
+
+inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
+ Atomic64 old_value, Atomic64 new_value) {
+ return __sync_val_compare_and_swap(ptr, old_value, new_value);
+}
+
+inline Atomic64 Release_CompareAndSwap(volatile Atomic64* ptr,
+ Atomic64 old_value, Atomic64 new_value) {
+ return __sync_val_compare_and_swap(ptr, old_value, new_value);
+}
+
+inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) {
+ __sync_lock_test_and_set(ptr, value);
+}
+
+inline void Acquire_Store(volatile Atomic64* ptr, Atomic64 value) {
+ __sync_lock_test_and_set(ptr, value);
+}
+
+inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) {
+ __sync_lock_test_and_set(ptr, value);
+}
+
+inline Atomic64 NoBarrier_Load(volatile const Atomic64* ptr) {
+ return __sync_add_and_fetch(ptr, 0);
+}
+
+inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
+ return __sync_add_and_fetch(ptr, 0);
+}
+
+inline Atomic64 Release_Load(volatile const Atomic64* ptr) {
+ return __sync_add_and_fetch(ptr, 0);
+}
+}
+} // namespace v8::base
+
+#endif // V8_BASE_ATOMICOPS_INTERNALS_PORTABLE_H_