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FFmpeg/libavutil
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Wan-Teh Chang fed50c4304 avutil: fix data race in av_get_cpu_flags() 
Make the one-time initialization in av_get_cpu_flags() thread-safe. The
static variable |cpu_flags| in libavutil/cpu.c is 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.

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>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-12-13 00:07:20 +01:00
..
aarch64
aarch64: Add an offset parameter to the movrel macro
2016-11-15 15:10:03 -05:00
arm
arm: Clear the gp register alias at the end of functions
2016-11-15 15:10:03 -05:00
avr32
Merge commit '41ed7ab45fc693f7d7fc35664c0233f4c32d69bb'
2016-06-21 21:55:34 +02:00
bfin
…
mips
avutil/mips: loongson add mmi utils header file
2016-10-23 03:23:09 +02:00
ppc
avutil/ppc/cpu: add include avassert.h
2015-06-05 19:12:58 +02:00
sh4
…
tests
avutil/tests/imgutils: Remove unused variable
2016-12-13 00:06:53 +01:00
tomi
…
x86
avutil/x86/emms: Document the emms_c() vs alloc/free relation.
2016-10-23 13:02:37 +02:00
.gitignore
Merge commit '257f00ec1ab06a2a161f535036c6512f3fc8e801'
2016-06-22 11:28:51 +02:00
adler32.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
adler32.h
avutil: Group hash functions separately in Doxygen
2016-08-02 07:48:08 -07:00
aes_ctr.c
avutil/aes_crt: free AVAESCTR struct properly
2016-02-03 19:33:23 -03:00
aes_ctr.h
libavutil: add aes-ctr support
2015-12-15 14:16:28 +01:00
aes_internal.h
lavu/aes: align AVAES struct members
2015-10-28 04:23:14 -05:00
aes.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
aes.h
lavu: Drop deprecated context size variables
2015-08-28 16:04:27 +02:00
atomic_gcc.h
lavu/atomic: add support for the new memory model aware gcc built-ins
2014-10-29 14:09:58 -03:00
atomic_suncc.h
Merge commit '29c2d06d67724e994980045afa055c6c34611b30'
2016-02-24 17:31:44 +00:00
atomic_win32.h
msvc: Fix compilation errors due to header include order.
2014-11-27 12:40:18 +01:00
atomic.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
atomic.h
…
attributes.h
avutil/attributes: add av_warn_unused_result
2015-10-05 19:30:20 +02:00
audio_fifo.c
avutil/audio_fifo: Use av_fifo_freep() and remove redundant if()
2016-10-14 17:08:51 +02:00
audio_fifo.h
avfilter: add loop filters
2016-02-18 11:55:00 +01:00
avassert.h
avutil/avassert: Add av_assertX_fpu()
2016-10-22 13:50:09 +02:00
avstring.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
avstring.h
fix some a/an typos
2016-03-28 14:13:17 -08:00
avutil.h
lavu: Add AVSphericalMapping type and frame side data
2016-12-07 14:39:04 -05:00
avutilres.rc
…
base64.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
base64.h
lavu/base64: add AV_BASE64_DECODE_SIZE() macro
2016-04-02 12:48:21 +02:00
blowfish.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
blowfish.h
avutil: undo FF_API_CRYPTO_CONTEXT deprecation
2015-10-16 19:13:38 -03:00
bprint.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
bprint.h
avutil/bprint: C++ compatible AVBPrint definition.
2014-11-29 03:51:35 +01:00
bswap.h
Fix compile error on bfin.
2014-08-05 01:54:47 +02:00
buffer_internal.h
Merge commit '721a4efc0545548a241080b53ab480e34f366240'
2016-02-17 16:07:16 +00:00
buffer.c
Merge commit '721a4efc0545548a241080b53ab480e34f366240'
2016-02-17 16:07:16 +00:00
buffer.h
Merge commit '328e9a15c568843580ff3ff490748d545f16def8'
2016-04-13 17:27:01 +01:00
camellia.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
camellia.h
avutil/camellia: fix documentation for av_camellia_crypt()
2015-01-02 21:23:45 +01:00
cast5.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
cast5.h
avutil/cast5: update Doxygen for av_cast5_init with return information
2015-10-15 22:32:58 -04:00
channel_layout.c
avutil/channel_layout: AV_CH_LAYOUT_6POINT1_BACK not reachable in parsing
2016-03-10 21:24:25 +01:00
channel_layout.h
Merge commit 'e23f84d9652474353d8bbc42787a56ec1991908f'
2015-08-24 10:40:24 +02:00
color_utils.c
lavu: Adding ARIB STD-B67 (hybrid log-gamma) enum value and transfer function.
2016-06-01 16:32:08 +02:00
color_utils.h
avutil/color_utils: Add basic transfer functions for each AVColorTransferCharacteristic
2015-09-10 23:53:05 +02:00
colorspace.h
Merge commit '1f77e634bb838f71ff21923b5e9fe3104c831c52'
2016-06-21 22:16:16 +02:00
common.h
avutil: Rename FF_CEIL_COMPAT to AV_CEIL_COMPAT
2016-01-27 16:36:46 +00:00
cpu_internal.h
x86: add some more helper macros to check for slow cpuflags
2016-02-14 20:00:17 -03:00
cpu.c
avutil: fix data race in av_get_cpu_flags()
2016-12-13 00:07:20 +01:00
cpu.h
avutil: fix data race in av_get_cpu_flags()
2016-12-13 00:07:20 +01:00
crc.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
crc.h
avutil: Add detailed Doxygen description to a few hashes
2016-08-02 07:48:21 -07:00
des.c
Merge commit 'a6a750c7ef240b72ce01e9653343a0ddf247d196'
2016-06-22 13:44:34 +02:00
des.h
avutil: undo FF_API_CRYPTO_CONTEXT deprecation
2015-10-16 19:13:38 -03:00
dict.c
avformat: factorize iso 8601 timestamp writer to a dictionary avutil function
2016-08-17 23:45:41 +02:00
dict.h
cosmetics: Fix spelling mistakes
2016-05-04 18:16:21 +02:00
display.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
display.h
Added a selftest to libavutil/display.c
2016-03-22 17:24:55 +01:00
downmix_info.c
…
downmix_info.h
…
dynarray.h
dynarray: Change AV_ to FF_ for AV_DYNARRAY_ADD
2016-07-31 10:19:03 -07:00
error.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
error.h
avutil/error: Introduce new error codes for 4XX and 5XX replies from remote servers
2014-10-19 22:32:14 +02:00
eval.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
eval.h
avutil/eval: minor typo
2015-11-01 19:35:01 -05:00
ffmath.h
all: move ff_exp10, ff_exp10f, ff_fast_powf to lavu/ffmath.h
2016-03-22 10:15:31 -07:00
fifo.c
libavutil/fifo: Fix fifo grow step
2016-06-03 14:49:56 +02:00
fifo.h
avutil/fifo: add function av_fifo_generic_peek_at()
2015-10-14 20:23:58 +02:00
file_open.c
lavu/file_open: Use current directory for temporary files also on Android.
2016-06-11 22:41:18 +02:00
file.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
file.h
avutil/file: Move av_tempfile() to avutil/file_open ff_tempfile()
2016-03-12 02:08:34 +01:00
fixed_dsp.c
x86/fixed_dsp: add ff_butterflies_fixed_sse2
2016-01-16 21:09:38 -03:00
fixed_dsp.h
x86/fixed_dsp: add ff_butterflies_fixed_sse2
2016-01-16 21:09:38 -03:00
float_dsp.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
float_dsp.h
avutil: merge avpriv_float_dsp_init into avpriv_float_dsp_alloc
2015-10-21 00:24:58 +02:00
frame.c
avutil/frame: fix indention after last commit
2016-11-16 21:25:45 +01:00
frame.h
lavu: Add AVSphericalMapping type and frame side data
2016-12-07 14:39:04 -05:00
hash.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
hash.h
avutil/hash: Add more detailed Doxygen documentation
2016-08-02 21:49:52 -07:00
hmac.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
hmac.h
lavu/hmac: remove deprecated type ids
2015-09-05 18:07:20 +02:00
hwcontext_cuda_internal.h
avutil/hwcontext_cuda: use dynamically loaded CUDA
2016-11-22 10:34:27 +01:00
hwcontext_cuda.c
avutil/hwcontext_cuda: check for missing pixel format
2016-11-30 12:36:23 +01:00
hwcontext_cuda.h
avutil/hwcontext_cuda: use dynamically loaded CUDA
2016-11-22 10:34:27 +01:00
hwcontext_dxva2.c
Merge commit '2ef87815fec059504370ae3050cc243a53553915'
2016-11-14 15:15:19 +01:00
hwcontext_dxva2.h
Merge commit 'c46db38cde8e8fd8ecb1c6602f10ec0e002f29a8'
2016-06-22 22:38:49 +02:00
hwcontext_internal.h
Merge commit '59e7361cc791e5103be1712dc59a2055f118d0da'
2016-09-28 13:30:27 -03:00
hwcontext_qsv.c
Merge commit 'd20c118975220a0256027d1c2410bade94b8534d'
2016-11-14 15:18:49 +01:00
hwcontext_qsv.h
Merge commit '59e7361cc791e5103be1712dc59a2055f118d0da'
2016-09-28 13:30:27 -03:00
hwcontext_vaapi.c
Merge commit 'f62bb216ac4cfbbff16108c6bac35a0282532972'
2016-11-13 22:36:18 +01:00
hwcontext_vaapi.h
hwcontext_vaapi: add a quirk for the missing MemoryType attribute
2016-11-13 20:39:49 +00:00
hwcontext_vdpau.c
avutil/hwcontext_vdpau: Fix warning: "GET_CALLBACK" redefined
2016-10-10 02:41:24 +02:00
hwcontext_vdpau.h
Merge commit 'a001ce31bc2bcf875a39b5fb22dae49120293b42'
2016-02-17 16:16:34 +00:00
hwcontext.c
Merge commit 'fdfe01365d579189d9a55b3741dba2ac46eb1df8'
2016-11-13 22:35:49 +01:00
hwcontext.h
Merge commit '5fcae3b3f93fd02b3d1e009b9d9b17410fca9498'
2016-11-13 22:35:04 +01:00
imgutils.c
avutil: Add av_image_check_size2()
2016-12-10 22:24:10 +01:00
imgutils.h
avutil: Add av_image_check_size2()
2016-12-10 22:24:10 +01:00
integer.c
avutil/integer: Fix av_mod_i() with negative dividend
2015-12-01 13:26:12 +01:00
integer.h
…
internal.h
avformat: factorize iso 8601 timestamp writer to a dictionary avutil function
2016-08-17 23:45:41 +02:00
intfloat.h
…
intmath.c
intmath: remove av_ctz.
2015-10-11 18:03:10 -04:00
intmath.h
lavu: rename and move ff_parity to av_parity
2016-01-07 20:04:24 -03:00
intreadwrite.h
…
lfg.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
lfg.h
…
libavutil.v
build: Change structure of the linker version script templates
2016-05-29 16:43:11 +02:00
libm.h
lavu/libm: add isfinite fallback
2016-01-13 20:00:19 -05:00
lls.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
lls.h
Merge commit '50078c1c8070dd8d1c329e8117ff30ec72489039'
2016-01-02 10:25:12 +01:00
log2_tab.c
…
log.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
log.h
lavu: remove comma at final enumeration items to fix pedantic warnings
2016-10-26 19:36:09 +02:00
lzo.c
avutil/lzo: split test out into a separate file
2016-05-13 22:48:56 -03:00
lzo.h
…
macros.h
Merge commit '50078c1c8070dd8d1c329e8117ff30ec72489039'
2016-01-02 10:25:12 +01:00
Makefile
avutil/tests: run the cpu_init.c test conditionally on HAVE_THREADS
2016-12-10 18:47:10 -03:00
mastering_display_metadata.c
libavutil: add mastering display metadata sidedata
2016-01-19 16:43:31 +01:00
mastering_display_metadata.h
libavutil/mastering_display_metadata.h: change fields to be rationals as this is how they are typically coded.
2016-01-29 19:08:52 +01:00
mathematics.c
avutil/mathematics: Fix division by 0
2015-12-09 17:39:38 +01:00
mathematics.h
mathematics: Extend and edit Doxygen
2016-08-02 21:53:34 -07:00
md5.c
Merge commit '41ed7ab45fc693f7d7fc35664c0233f4c32d69bb'
2016-06-21 21:55:34 +02:00
md5.h
avutil: Group hash functions separately in Doxygen
2016-08-02 07:48:08 -07:00
mem_internal.h
avutil/mem_internal: add missing header includes
2015-07-13 21:54:15 -03:00
mem.c
dynarray: Change AV_ to FF_ for AV_DYNARRAY_ADD
2016-07-31 10:19:03 -07:00
mem.h
avutil/mem: remove av_realloc / av_malloc incompatibility warning
2016-08-23 13:50:19 +02:00
motion_vector.h
avutil/motion_vector: export subpel motion information
2015-11-23 10:55:15 +01:00
murmur3.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
murmur3.h
murmur3: Add Doxygen documentation
2016-08-02 07:50:44 -07:00
opencl_internal.c
lavu: rename ff_opencl_set_parameter() to avpriv_opencl_set_parameter()
2014-08-12 03:49:45 +02:00
opencl_internal.h
all: Add missing header guards
2016-01-28 19:49:48 -08:00
opencl.c
libavutil/opencl: fixed uninitialized var warning
2016-05-23 11:28:03 +02:00
opencl.h
all: Make header guard names consistent
2016-01-31 15:44:11 -08:00
opt.c
opt: reject denominator zero as out of range
2016-12-13 00:00:31 +01:00
opt.h
avutil/opt: Add AV_OPT_TYPE_UINT64
2016-11-23 02:01:05 +01:00
parseutils.c
avutil/parseutils: dont assume standard time when parsing a timestamp
2016-07-11 01:06:23 +02:00
parseutils.h
Merge commit '27f274628234c1f934b9a6a6380ed567c1b4ceae'
2015-04-07 20:46:25 +02:00
pca.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
pca.h
avutil/pca: Make argument of ff_pca_add() const
2014-09-28 16:17:18 +02:00
pixdesc.c
avutil: add P016 pixel format
2016-11-22 10:07:43 -08:00
pixdesc.h
pixdesc: Order function prototypes semantically
2016-10-05 17:17:50 -07:00
pixelutils.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
pixelutils.h
avutil: add pixelutils API
2014-08-05 21:05:52 +02:00
pixfmt.h
avutil: add P016 pixel format
2016-11-22 10:07:43 -08:00
qsort.h
all: Add missing header guards
2016-01-28 19:49:48 -08:00
random_seed.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
random_seed.h
…
rational.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
rational.h
rational: Extend Doxygen
2016-08-02 21:52:40 -07:00
rc4.c
avutil: use EINVAL instead of -1 for the return code of crypto related init functions
2015-10-18 15:17:58 -04:00
rc4.h
avutil: undo FF_API_CRYPTO_CONTEXT deprecation
2015-10-16 19:13:38 -03:00
replaygain.h
Merge commit '29c2d06d67724e994980045afa055c6c34611b30'
2016-02-24 17:31:44 +00:00
reverse.c
avutil: add ff_reverse as av_reverse replacement
2015-08-12 00:14:14 +02:00
ripemd.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
ripemd.h
avutil: Group hash functions separately in Doxygen
2016-08-02 07:48:08 -07:00
samplefmt.c
swresample: add int64 sample format
2016-08-18 15:30:05 +02:00
samplefmt.h
swresample: add int64 sample format
2016-08-18 15:30:05 +02:00
sha512.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
sha512.h
avutil: Add detailed Doxygen description to a few hashes
2016-08-02 07:48:21 -07:00
sha.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
sha.h
avutil: Add detailed Doxygen description to a few hashes
2016-08-02 07:48:21 -07:00
softfloat_ieee754.h
avutil/softfloat_ieee754: make all functions inline
2016-11-05 17:53:26 -03:00
softfloat_tables.h
avutil/softfloat_tables: add missing stdint.h include
2015-04-30 17:38:41 -03:00
softfloat.h
softfloat: decrease MIN_EXP to cover full float range
2016-11-25 01:23:48 +01:00
spherical.c
lavu: Add AVSphericalMapping type and frame side data
2016-12-07 14:39:04 -05:00
spherical.h
lavu: Add AVSphericalMapping type and frame side data
2016-12-07 14:39:04 -05:00
stereo3d.c
Merge commit '0c4468dc185fa8b9e7d6add914595c5e928b24fd'
2016-06-23 12:38:51 +02:00
stereo3d.h
Merge commit '0c4468dc185fa8b9e7d6add914595c5e928b24fd'
2016-06-23 12:38:51 +02:00
tablegen.h
libavutil/tablegen: add missing math.h include
2015-12-04 14:49:35 +01:00
tea.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
tea.h
Add support for TEA (Tiny Encryption Algorithm)
2015-07-21 23:10:44 +02:00
thread.h
lavu: add pthread asserts if ASSERT_LEVEL>1
2016-01-20 21:08:50 +01:00
threadmessage.c
lavc, lavu: use avutil/thread.h instead of redundant conditional includes
2015-12-07 17:25:51 +01:00
threadmessage.h
avutil/threadmessage.h: Fix swapped comments
2016-06-16 23:54:51 +02:00
time_internal.h
avutil/time_internal: do not attempt to override *time_r() macros
2014-11-05 18:44:15 +01:00
time.c
Merge commit '1bd0bdcdc236099d5c0d179696951f35f5310fa5'
2014-10-24 11:06:56 +02:00
time.h
Merge commit '1bd0bdcdc236099d5c0d179696951f35f5310fa5'
2014-10-24 11:06:56 +02:00
timecode.c
avutil/timecode: Fix fps check
2015-12-03 04:09:48 +01:00
timecode.h
…
timer.h
Merge commit '64034849dad8410bedbe1def4c533490fb85cc4a'
2016-01-02 10:26:42 +01:00
timestamp.h
lavu/timestamp: Avoid C++-unfriendly code in user header
2016-09-01 20:01:28 +01:00
tree.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
tree.h
doc: fix spelling errors
2016-10-21 23:58:47 +02:00
twofish.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
twofish.h
libavutil: Added twofish symmetric block cipher
2015-01-29 01:56:11 +01:00
utils.c
avutil/avassert: Add av_assertX_fpu()
2016-10-22 13:50:09 +02:00
version.h
avutil: Add av_image_check_size2()
2016-12-10 22:24:10 +01:00
wchar_filename.h
avutil/wchar_filename: add av_warn_unused_result
2015-10-30 13:47:28 -04:00
xga_font_data.c
…
xga_font_data.h
…
xtea.c
Merge commit 'd12b5b2f135aade4099f4b26b0fe678656158c13'
2016-05-11 19:13:03 +01:00
xtea.h
Merge commit '588b6215b4c74945994eb9636b0699028c069ed2'
2015-11-22 14:29:09 +00:00