Tree:
c5714b51aa
master
n4.4-jackoutdev
oldabi
release/0.10
release/0.11
release/0.5
release/0.6
release/0.7
release/0.8
release/0.9
release/1.0
release/1.1
release/1.2
release/2.0
release/2.1
release/2.2
release/2.3
release/2.4
release/2.5
release/2.6
release/2.7
release/2.8
release/3.0
release/3.1
release/3.2
release/3.3
release/3.4
release/4.0
release/4.1
release/4.2
release/4.3
release/4.4
v0.6.1
v0.6
v0.5.3
v0.5.2
v0.5.1
v0.5
n4.5-dev
n4.4-dev
n4.3-dev
n4.2-dev
n4.1-dev
n3.5-dev
n3.4-dev
n3.3-dev
n3.2-dev
n3.1-dev
n2.9-dev
n2.8-dev
n2.7-dev
n2.6-dev
n2.5-dev
n2.4-dev
n2.3-dev
n2.2-dev
n2.1-dev
n1.3-dev
n1.2-dev
n1.1-dev
n0.12-dev
n0.11-dev
n4.4
n4.3.2
n4.3.1
n4.3
n4.2.4
n4.2.3
n4.2.2
n4.2.1
n4.2
n4.1.6
n4.1.5
n4.1.4
n4.1.3
n4.1.2
n4.1.1
n4.1
n4.0.6
n4.0.5
n4.0.4
n4.0.3
n4.0.2
n4.0.1
n4.0
n3.4.8
n3.4.7
n3.4.6
n3.4.5
n3.4.4
n3.4.3
n3.4.2
n3.4.1
n3.4
n3.3.9
n3.3.8
n3.3.7
n3.3.6
n3.3.5
n3.3.4
n3.3.3
n3.3.2
n3.3.1
n3.3
n3.2.15
n3.2.14
n3.2.13
n3.2.12
n3.2.11
n3.2.10
n3.2.9
n3.2.8
n3.2.7
n3.2.6
n3.2.5
n3.2.4
n3.2.3
n3.2.2
n3.2.1
n3.2
n3.1.11
n3.1.10
n3.1.9
n3.1.8
n3.1.7
n3.1.6
n3.1.5
n3.1.4
n3.1.3
n3.1.2
n3.1.1
n3.1
n3.0.12
n3.0.11
n3.0.10
n3.0.9
n3.0.8
n3.0.7
n3.0.6
n3.0.5
n3.0.4
n3.0.3
n3.0.2
n3.0.1
n3.0
n2.8.17
n2.8.16
n2.8.15
n2.8.14
n2.8.13
n2.8.12
n2.8.11
n2.8.10
n2.8.9
n2.8.8
n2.8.7
n2.8.6
n2.8.5
n2.8.4
n2.8.3
n2.8.2
n2.8.1
n2.8
n2.7.7
n2.7.6
n2.7.5
n2.7.4
n2.7.3
n2.7.2
n2.7.1
n2.7
n2.6.9
n2.6.8
n2.6.7
n2.6.6
n2.6.5
n2.6.4
n2.6.3
n2.6.2
n2.6.1
n2.6
n2.5.11
n2.5.10
n2.5.9
n2.5.8
n2.5.7
n2.5.6
n2.5.5
n2.5.4
n2.5.3
n2.5.2
n2.5.1
n2.5
n2.4.14
n2.4.13
n2.4.12
n2.4.11
n2.4.10
n2.4.9
n2.4.8
n2.4.7
n2.4.6
n2.4.5
n2.4.4
n2.4.3
n2.4.2
n2.4.1
n2.4
n2.3.6
n2.3.5
n2.3.4
n2.3.3
n2.3.2
n2.3.1
n2.3
n2.2.16
n2.2.15
n2.2.14
n2.2.13
n2.2.12
n2.2.11
n2.2.10
n2.2.9
n2.2.8
n2.2.7
n2.2.6
n2.2.5
n2.2.4
n2.2.3
n2.2.2
n2.2.1
n2.2
n2.2-rc2
n2.2-rc1
n2.1.8
n2.1.7
n2.1.6
n2.1.5
n2.1.4
n2.1.3
n2.1.2
n2.1.1
n2.1
n2.0.7
n2.0.6
n2.0.5
n2.0.4
n2.0.3
n2.0.2
n2.0.1
n2.0
n1.2.12
n1.2.11
n1.2.10
n1.2.9
n1.2.8
n1.2.7
n1.2.6
n1.2.5
n1.2.4
n1.2.3
n1.2.2
n1.2.1
n1.2
n1.1.16
n1.1.15
n1.1.14
n1.1.13
n1.1.12
n1.1.11
n1.1.10
n1.1.9
n1.1.8
n1.1.7
n1.1.6
n1.1.5
n1.1.4
n1.1.3
n1.1.2
n1.1.1
n1.1
n1.0.10
n1.0.9
n1.0.8
n1.0.7
n1.0.6
n1.0.5
n1.0.4
n1.0.3
n1.0.2
n1.0.1
n1.0
n0.11.5
n0.11.4
n0.11.3
n0.11.2
n0.11.1
n0.11
n0.10.16
n0.10.15
n0.10.14
n0.10.13
n0.10.12
n0.10.11
n0.10.10
n0.10.9
n0.10.8
n0.10.7
n0.10.6
n0.10.5
n0.10.4
n0.10.3
n0.10.2
n0.10.1
n0.10
n0.9.4
n0.9.3
n0.9.2
n0.9.1
n0.9
n0.8.15
n0.8.14
n0.8.13
n0.8.12
n0.8.11
n0.8.10
n0.8.9
n0.8.8
n0.8.7
n0.8.6
n0.8.5
n0.8.4
n0.8.3
n0.8.2
n0.8.1
n0.8
n0.7.17
n0.7.16
n0.7.15
n0.7.14
n0.7.13
n0.7.12
n0.7.11
n0.7.10
n0.7.9
n0.7.8
n0.7.7
n0.7.6
n0.7.5
n0.7.4
n0.7.3
n0.7.2
n0.7.1
n0.6.7
n0.6.6
n0.6.5
n0.6.4
ffmpeg-0.6.3
n0.5.15
n0.5.14
n0.5.13
n0.5.12
n0.5.11
n0.5.10
n0.5.9
n0.5.8
n0.5.7
n0.5.6
n0.5.5
N
1 Commits (c5714b51aad41fef56dddac1d542e7fc6b984627)
1 Commits (c5714b51aad41fef56dddac1d542e7fc6b984627)
| Author | SHA1 | Message | Date |
|---|---|---|---|
 Wan-Teh Chang
|
2170017a1c |
avutil: fix data race in av_get_cpu_flags()
Make the one-time initialization in av_get_cpu_flags() thread-safe. The
static variables |flags|, |cpuflags_mask|, and |checked| in
libavutil/cpu.c are read and written using normal load and store
operations. These are considered as data races. The fix is to use atomic
load and store operations.
Remove the |checked| variable because the invalid value of -1 for
|flags| can be used to indicate the same condition. Rename |flags| to
|cpu_flags| and move it to file scope.
The fix can be verified by running the libavutil/tests/cpu_init.c test
program under ThreadSanitizer:
./configure --toolchain=clang-tsan
make libavutil/tests/cpu_init
libavutil/tests/cpu_init
There should be no warnings from ThreadSanitizer.
Co-author: Dmitry Vyukov of Google, who suggested the data race fix.
Signed-off-by: Wan-Teh Chang <wtc@google.com>
|
8 years ago |