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authorGravatar Abseil Team <absl-team@google.com>2018-08-02 10:08:43 -0700
committerGravatar Jon Cohen <cohenjon@google.com>2018-08-02 13:59:26 -0400
commit8f96be6ca60d967bd4b37f93d0a03bcff4145200 (patch)
tree11d279916ab48665493b316570183bd0257e1a29
parent92e07e5590752d6b8e67f7f2f86c6286561e8cea (diff)
Export of internal Abseil changes.
-- 586c41e29e80d9613434f18347d4a70a92a90989 by Jon Cohen <cohenjon@google.com>: Whitespace cleanup PiperOrigin-RevId: 207119388 -- e28fc6932d68f7097918f3092079f07112e684c1 by Abseil Team <absl-team@google.com>: Fix comment typo in mutex.h PiperOrigin-RevId: 207024211 -- b7714a5f189b2863f9cfc285ba428ca2059b83f4 by Abseil Team <absl-team@google.com>: Raise the floor for gcc from gcc 4.7 to gcc 4.8. PiperOrigin-RevId: 207021220 -- 262ae79150278ea1b4e512dfe8ff05c32768f429 by Matt Armstrong <marmstrong@google.com>: Raise the floor for gcc from gcc 4.7 to gcc 4.8. PiperOrigin-RevId: 206997741 -- 5aba0b15eaf6c5beff0e91670a7cdf5ad1151886 by Derek Mauro <dmauro@google.com>: Use std::chrono to get the current time on both Apple and Windows platforms, eliminating the unnecessarily complicated logic on Apple platforms. PiperOrigin-RevId: 206979219 -- 807a91adf876f7532050d442f00268754c0f260b by Derek Mauro <dmauro@google.com>: Fix multiple definition problem when Abseil is combined with gperftools on PowerPC. https://github.com/abseil/abseil-cpp/pull/152 PiperOrigin-RevId: 206963083 GitOrigin-RevId: 586c41e29e80d9613434f18347d4a70a92a90989 Change-Id: I0ee65a733c423890b97dd3500f2d17449792387c
-rw-r--r--absl/synchronization/CMakeLists.txt2
-rw-r--r--absl/synchronization/mutex.h2
-rw-r--r--absl/time/BUILD.bazel3
-rw-r--r--absl/time/clock.cc6
-rw-r--r--absl/time/internal/get_current_time_chrono.inc29
-rw-r--r--absl/time/internal/get_current_time_ios.inc80
-rw-r--r--absl/time/internal/get_current_time_windows.inc17
7 files changed, 34 insertions, 105 deletions
diff --git a/absl/synchronization/CMakeLists.txt b/absl/synchronization/CMakeLists.txt
index c19f5725..de0d7b7d 100644
--- a/absl/synchronization/CMakeLists.txt
+++ b/absl/synchronization/CMakeLists.txt
@@ -34,7 +34,7 @@ list(APPEND SYNCHRONIZATION_INTERNAL_HEADERS
# synchronization library
-list(APPEND SYNCHRONIZATION_SRC
+list(APPEND SYNCHRONIZATION_SRC
"barrier.cc"
"blocking_counter.cc"
"internal/create_thread_identity.cc"
diff --git a/absl/synchronization/mutex.h b/absl/synchronization/mutex.h
index 4d9e0312..83c21486 100644
--- a/absl/synchronization/mutex.h
+++ b/absl/synchronization/mutex.h
@@ -558,7 +558,7 @@ class SCOPED_LOCKABLE ReaderMutexLock {
// WriterMutexLock
//
// The `WriterMutexLock` is a helper class, like `MutexLock`, which acquires and
-// releases a write (exclusive) lock on a `Mutex` va RAII.
+// releases a write (exclusive) lock on a `Mutex` via RAII.
class SCOPED_LOCKABLE WriterMutexLock {
public:
explicit WriterMutexLock(Mutex *mu) EXCLUSIVE_LOCK_FUNCTION(mu)
diff --git a/absl/time/BUILD.bazel b/absl/time/BUILD.bazel
index e793da87..c7c16d43 100644
--- a/absl/time/BUILD.bazel
+++ b/absl/time/BUILD.bazel
@@ -30,9 +30,8 @@ cc_library(
"clock.cc",
"duration.cc",
"format.cc",
- "internal/get_current_time_ios.inc",
+ "internal/get_current_time_chrono.inc",
"internal/get_current_time_posix.inc",
- "internal/get_current_time_windows.inc",
"time.cc",
],
hdrs = [
diff --git a/absl/time/clock.cc b/absl/time/clock.cc
index 772f8525..74ee1401 100644
--- a/absl/time/clock.cc
+++ b/absl/time/clock.cc
@@ -57,10 +57,8 @@ Time Now() {
#endif
#endif
-#if defined(__APPLE__)
-#include "absl/time/internal/get_current_time_ios.inc"
-#elif defined(_WIN32)
-#include "absl/time/internal/get_current_time_windows.inc"
+#if defined(__APPLE__) || defined(_WIN32)
+#include "absl/time/internal/get_current_time_chrono.inc"
#else
#include "absl/time/internal/get_current_time_posix.inc"
#endif
diff --git a/absl/time/internal/get_current_time_chrono.inc b/absl/time/internal/get_current_time_chrono.inc
new file mode 100644
index 00000000..cf884a10
--- /dev/null
+++ b/absl/time/internal/get_current_time_chrono.inc
@@ -0,0 +1,29 @@
+// Copyright 2018 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <chrono>
+#include <cstdint>
+
+namespace absl {
+namespace time_internal {
+
+static int64_t GetCurrentTimeNanosFromSystem() {
+ return std::chrono::duration_cast<std::chrono::nanoseconds>(
+ std::chrono::system_clock::now() -
+ std::chrono::system_clock::from_time_t(0))
+ .count();
+}
+
+} // namespace time_internal
+} // namespace absl
diff --git a/absl/time/internal/get_current_time_ios.inc b/absl/time/internal/get_current_time_ios.inc
deleted file mode 100644
index f3db32bf..00000000
--- a/absl/time/internal/get_current_time_ios.inc
+++ /dev/null
@@ -1,80 +0,0 @@
-#include "absl/time/clock.h"
-
-#include <sys/time.h>
-#include <ctime>
-#include <cstdint>
-
-#include "absl/base/internal/raw_logging.h"
-
-// These are not defined in the Xcode 7.3.1 SDK Headers.
-// Once we are no longer supporting Xcode 7.3.1 we can
-// remove these.
-#ifndef __WATCHOS_3_0
-#define __WATCHOS_3_0 30000
-#endif
-
-#ifndef __TVOS_10_0
-#define __TVOS_10_0 100000
-#endif
-
-#ifndef __IPHONE_10_0
-#define __IPHONE_10_0 100000
-#endif
-
-#ifndef __MAC_10_12
-#define __MAC_10_12 101200
-#endif
-
-namespace absl {
-namespace time_internal {
-
-static int64_t GetCurrentTimeNanosFromSystem() {
-#if (__MAC_OS_X_VERSION_MAX_ALLOWED >= __MAC_10_12) || \
- (__IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0) || \
- (__WATCH_OS_VERSION_MAX_ALLOWED >= __WATCHOS_3_0) || \
- (__TV_OS_VERSION_MAX_ALLOWED >= __TVOS_10_0)
- // clock_gettime_nsec_np is not defined on SDKs before Xcode 8.0.
- // This preprocessor logic is based upon __CLOCK_AVAILABILITY in
- // usr/include/time.h. Once we are no longer supporting Xcode 7.3.1 we can
- // remove this #if.
- // We must continue to check if it is defined until we are sure that ALL the
- // platforms we are shipping on support it.
- // clock_gettime_nsec_np is preferred because it may give higher accuracy than
- // gettimeofday in future Apple operating systems.
- // Currently (macOS 10.12/iOS 10.2) clock_gettime_nsec_np accuracy is
- // microsecond accuracy (i.e. equivalent to gettimeofday).
- if (&clock_gettime_nsec_np != nullptr) {
- return clock_gettime_nsec_np(CLOCK_REALTIME);
- }
-#endif
-#if (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && \
- (__MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_12)) || \
- (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && \
- (__IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_10_0)) || \
- (defined(__WATCH_OS_VERSION_MIN_REQUIRED) && \
- (__WATCH_OS_VERSION_MIN_REQUIRED < __WATCHOS_3_0)) || \
- (defined(__TV_OS_VERSION_MIN_REQUIRED) && \
- (__TV_OS_VERSION_MIN_REQUIRED < __TVOS_10_0))
- // We need this block in 2 different cases:
- // a) where we are compiling with Xcode 7 in which case the block above
- // will not be compiled in, and this is the only block executed.
- // b) where we are compiling with Xcode 8+ but supporting operating systems
- // that do not define clock_gettime_nsec_np, so this is in effect
- // an else block to the block above.
- // This block will not be compiled if the min supported version is
- // guaranteed to supply clock_gettime_nsec_np.
- //
- // Once we know that clock_gettime_nsec_np is in the SDK *AND* exists on
- // all the platforms we support, we can remove both this block and alter the
- // block above to just call clock_gettime_nsec_np directly.
- const int64_t kNanosPerSecond = 1000 * 1000 * 1000;
- const int64_t kNanosPerMicrosecond = 1000;
- struct timeval tp;
- ABSL_RAW_CHECK(gettimeofday(&tp, nullptr) == 0, "Failed gettimeofday");
- return (int64_t{tp.tv_sec} * kNanosPerSecond +
- int64_t{tp.tv_usec} * kNanosPerMicrosecond);
-#endif
-}
-
-} // namespace time_internal
-} // namespace absl
diff --git a/absl/time/internal/get_current_time_windows.inc b/absl/time/internal/get_current_time_windows.inc
deleted file mode 100644
index b22a9c9e..00000000
--- a/absl/time/internal/get_current_time_windows.inc
+++ /dev/null
@@ -1,17 +0,0 @@
-#include "absl/time/clock.h"
-
-#include <chrono>
-#include <cstdint>
-
-namespace absl {
-namespace time_internal {
-
-static int64_t GetCurrentTimeNanosFromSystem() {
- return std::chrono::duration_cast<std::chrono::nanoseconds>(
- std::chrono::system_clock::now() -
- std::chrono::system_clock::from_time_t(0))
- .count();
-}
-
-} // namespace time_internal
-} // namespace absl