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https://github.com/dart-lang/sdk
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83a4d98554
Tighten some sequences in the write barrier stub. Change-Id: Ib3657b9b582082137d17e86135200444172f428a Reviewed-on: https://dart-review.googlesource.com/60820 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Siva Annamalai <asiva@google.com>
89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "platform/atomic.h"
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#include "platform/assert.h"
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#include "platform/utils.h"
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#include "vm/globals.h"
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#include "vm/unit_test.h"
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namespace dart {
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VM_UNIT_TEST_CASE(FetchAndIncrement) {
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uintptr_t v = 42;
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EXPECT_EQ(static_cast<uintptr_t>(42),
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AtomicOperations::FetchAndIncrement(&v));
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EXPECT_EQ(static_cast<uintptr_t>(43), v);
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}
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VM_UNIT_TEST_CASE(FetchAndDecrement) {
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uintptr_t v = 42;
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EXPECT_EQ(static_cast<uintptr_t>(42),
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AtomicOperations::FetchAndDecrement(&v));
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EXPECT_EQ(static_cast<uintptr_t>(41), v);
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}
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VM_UNIT_TEST_CASE(FetchAndIncrementSigned) {
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intptr_t v = -42;
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EXPECT_EQ(static_cast<intptr_t>(-42),
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AtomicOperations::FetchAndIncrement(&v));
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EXPECT_EQ(static_cast<intptr_t>(-41), v);
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}
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VM_UNIT_TEST_CASE(FetchAndDecrementSigned) {
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intptr_t v = -42;
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EXPECT_EQ(static_cast<intptr_t>(-42),
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AtomicOperations::FetchAndDecrement(&v));
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EXPECT_EQ(static_cast<intptr_t>(-43), v);
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}
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VM_UNIT_TEST_CASE(IncrementBy) {
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intptr_t v = 42;
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AtomicOperations::IncrementBy(&v, 100);
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EXPECT_EQ(static_cast<intptr_t>(142), v);
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}
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VM_UNIT_TEST_CASE(DecrementBy) {
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intptr_t v = 42;
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AtomicOperations::DecrementBy(&v, 41);
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EXPECT_EQ(static_cast<intptr_t>(1), v);
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}
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VM_UNIT_TEST_CASE(FetchOrRelaxed) {
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uint32_t v = 42;
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uint32_t previous = AtomicOperations::FetchOrRelaxedUint32(&v, 3);
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EXPECT_EQ(static_cast<uint32_t>(42), previous);
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EXPECT_EQ(static_cast<uint32_t>(43), v);
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}
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VM_UNIT_TEST_CASE(FetchAndRelaxed) {
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uint32_t v = 42;
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uint32_t previous = AtomicOperations::FetchAndRelaxedUint32(&v, 3);
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EXPECT_EQ(static_cast<uint32_t>(42), previous);
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EXPECT_EQ(static_cast<uint32_t>(2), v);
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}
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VM_UNIT_TEST_CASE(LoadRelaxed) {
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uword v = 42;
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EXPECT_EQ(static_cast<uword>(42), AtomicOperations::LoadRelaxed(&v));
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}
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TEST_CASE(CompareAndSwapWord) {
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uword old_value = 42;
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uword new_value = 100;
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uword result =
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AtomicOperations::CompareAndSwapWord(&old_value, old_value, new_value);
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EXPECT_EQ(static_cast<uword>(42), result);
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}
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TEST_CASE(CompareAndSwapUint32) {
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uint32_t old_value = 42;
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uint32_t new_value = 100;
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uint32_t result =
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AtomicOperations::CompareAndSwapUint32(&old_value, old_value, new_value);
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EXPECT_EQ(static_cast<uint32_t>(42), result);
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}
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} // namespace dart
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