diff options
| author |  Abseil Team <absl-team@google.com> | 2021-12-28 11:28:18 -0800 |
|---|---|---|
| committer |  Derek Mauro <dmauro@google.com> | 2021-12-28 15:12:23 -0500 |
| commit | 04610889a913d29037205ca72e9d7fd7acc925fe (patch) | |
| tree | d59d9967aa219522ed58e39bc638ad2d21b2e321 /absl/base/attributes.h | |
| parent | d758735198573d04e3b01b8495a4bbdb1a0d5f90 (diff) | |
Export of internal Abseil changes
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3fad46c668edd864a62511f2a6875b8b79e38f34 by Evan Brown <ezb@google.com>:
Use switches instead of lookup tables for zap_desig_waker and ignore_waiting_writers so that we can avoid dTLB misses.
See, e.g., https://godbolt.org/z/a7Gb9vzzj.
Also, now that these are functions, follow function style in naming and comments.
PiperOrigin-RevId: 418654693
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ba5107744023a4e9163a44d706fbe8e4a1bc0fd9 by Abseil Team <absl-team@google.com>:
Check for Clang before attempting to expand __clang_major__.
This avoids a warning about an undefined macro on Windows when compiling with
MinGW-GCC.
PiperOrigin-RevId: 418287329
GitOrigin-RevId: 3fad46c668edd864a62511f2a6875b8b79e38f34
Change-Id: I28104980c4d3b204537b248447a6bd1022c9ef5d
Diffstat (limited to 'absl/base/attributes.h')
| -rw-r--r-- | absl/base/attributes.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/absl/base/attributes.h b/absl/base/attributes.h index e3907827..f180cd77 100644 --- a/absl/base/attributes.h +++ b/absl/base/attributes.h @@ -136,9 +136,10 @@ // for further information. // The MinGW compiler doesn't complain about the weak attribute until the link // step, presumably because Windows doesn't use ELF binaries. -#if (ABSL_HAVE_ATTRIBUTE(weak) || \ - (defined(__GNUC__) && !defined(__clang__))) && \ - (!defined(_WIN32) || __clang_major__ < 9) && !defined(__MINGW32__) +#if (ABSL_HAVE_ATTRIBUTE(weak) || \ + (defined(__GNUC__) && !defined(__clang__))) && \ + (!defined(_WIN32) || (defined(__clang__) && __clang_major__ < 9)) && \ + !defined(__MINGW32__) #undef ABSL_ATTRIBUTE_WEAK #define ABSL_ATTRIBUTE_WEAK __attribute__((weak)) #define ABSL_HAVE_ATTRIBUTE_WEAK 1 |