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| author | Allan Sandfeld Jensen <allan.jensen@theqtcompany.com> | 2016-01-25 11:39:07 +0100 |
|---|---|---|
| committer | Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com> | 2016-01-25 15:20:42 +0000 |
| commit | 6c91641271e536ffaa88a1dff5127e42ee99a91e (patch) | |
| tree | 703d9dd49602377ddc90cbf886aad37913f2496b /chromium/base/atomicops_unittest.cc | |
| parent | b145b7fafd36f0c260d6a768c81fc14e32578099 (diff) | |
| download | qtwebengine-chromium-6c91641271e536ffaa88a1dff5127e42ee99a91e.tar.gz | |
BASELINE: Update Chromium to 49.0.2623.23
Also adds missing printing sources.
Change-Id: I3726b8f0c7d6751c9fc846096c571fadca7108cd
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Diffstat (limited to 'chromium/base/atomicops_unittest.cc')
| -rw-r--r-- | chromium/base/atomicops_unittest.cc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/chromium/base/atomicops_unittest.cc b/chromium/base/atomicops_unittest.cc index 3fd55974722..7298609270f 100644 --- a/chromium/base/atomicops_unittest.cc +++ b/chromium/base/atomicops_unittest.cc @@ -89,6 +89,13 @@ static void TestCompareAndSwap() { EXPECT_EQ(1, value); EXPECT_EQ(0, prev); + // Verify that CAS will *not* change "value" if it doesn't match the + // expected number. CAS will always return the actual value of the + // variable from before any change. + AtomicType fail = base::subtle::NoBarrier_CompareAndSwap(&value, 0, 2); + EXPECT_EQ(1, value); + EXPECT_EQ(1, fail); + // Use test value that has non-zero bits in both halves, more for testing // 64-bit implementation on 32-bit platforms. const AtomicType k_test_val = (static_cast<uint64_t>(1) << |