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Export of internal Abseil changes

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20405fc394419d434d3ea09b2e62e4edcb282421 by Christian Blichmann <cblichmann@google.com>:

Include `status` subdirectory in main `CMakeLists.txt`

PiperOrigin-RevId: 297125966

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101087af9689612bdda679ee0869e5cde4472244 by Matt Kulukundis <kfm@google.com>:

Fix typo

PiperOrigin-RevId: 296991360

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55ff5bc6970d46214c0459d3a7a23973c7dc69b9 by Andy Getzendanner <durandal@google.com>:

Extract logging's ErrnoSaver to absl::base_internal and use it in a couple other places.

PiperOrigin-RevId: 296969168

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b7cd7550297d53766576f751436617200c65831b by Abseil Team <absl-team@google.com>:

Internal change

PiperOrigin-RevId: 296951474

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8c04c73fc53f9a09c3e2400812b931157f35fe07 by Andy Soffer <asoffer@google.com>:

Auto-generate list of files in the DLL, and add new build targets to the DLL.

PiperOrigin-RevId: 296932061

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2f77829e196094f1addefd8ac2ac9e398c5b6100 by Andy Soffer <asoffer@google.com>:

Fix bug introduced by DLL where we couldn't build shared libraries on
non-windows platforms.

Fixes #623

PiperOrigin-RevId: 296919347

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b768163dbbff0c561b9dff0218a699e5e4fd33f3 by Abseil Team <absl-team@google.com>:

typo: microprosessor

PiperOrigin-RevId: 296904933

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b185da0dac44c91855373f0723df9242cbfb3db3 by Matthew Brown <matthewbr@google.com>:

Internal cleanup

PiperOrigin-RevId: 296509711
GitOrigin-RevId: 20405fc394419d434d3ea09b2e62e4edcb282421
Change-Id: I55c8eba6f353ceb337455ae144ab743ea21edbef
This commit is contained in:
Abseil Team 2020-02-25 08:48:42 -08:00 • committed by CJ Johnson
parent b69c7d880c
commit 0d5ce2797e
20 changed files with 248 additions and 128 deletions
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5
absl/base/internal/spinlock_linux.inc
View file

@ -19,12 +19,12 @@
#include <unistd.h>
#include <atomic>
#include <cerrno>
#include <climits>
#include <cstdint>
#include <ctime>
#include "absl/base/attributes.h"
#include "absl/base/internal/errno_saver.h"
// The SpinLock lockword is `std::atomic<uint32_t>`. Here we assert that
// `std::atomic<uint32_t>` is bitwise equivalent of the `int` expected
@ -51,12 +51,11 @@ extern "C" {
ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockDelay(
std::atomic<uint32_t> *w, uint32_t value, int loop,
absl::base_internal::SchedulingMode) {
int save_errno = errno;
absl::base_internal::ErrnoSaver errno_saver;
struct timespec tm;
tm.tv_sec = 0;
tm.tv_nsec = absl::base_internal::SpinLockSuggestedDelayNS(loop);
syscall(SYS_futex, w, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, value, &tm);
errno = save_errno;
}
ABSL_ATTRIBUTE_WEAK void AbslInternalSpinLockWake(std::atomic<uint32_t> *w,