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Export of internal Abseil changes

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3a871e2cd854a46770a9416189953b2b38980bcf by Andy Getzendanner <durandal@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 280660534

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f5a155fb056dcf68b089c21aebb5bf5159dc0eb3 by Tom Manshreck <shreck@google.com>:

Nit: fix format of algorithm.h comments

PiperOrigin-RevId: 280474139

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08b117a18353c0daf51b33b45100e5a007e5ab0c by Abseil Team <absl-team@google.com>:

Allow absl::Notification::HasBeenNotified to be inlined.

PiperOrigin-RevId: 280453271

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26d33dd2bad72945f1987f7b2669dbec3a6247e6 by Derek Mauro <dmauro@google.com>:

Fix unused variable warnings on Windows

PiperOrigin-RevId: 280324417

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907e9b23029be683af3b443bafd6a577a595922f by Abseil Team <absl-team@google.com>:

PeriodicSampler implementation (for internal-use only)

PiperOrigin-RevId: 280257168
GitOrigin-RevId: 3a871e2cd854a46770a9416189953b2b38980bcf
Change-Id: I6e2978cae22a6adc41c0577e5c21355e9db7c8f5
This commit is contained in:
Abseil Team 2019-11-15 08:07:12 -08:00 • committed by Andy Getz
parent fa8c75182f
commit 3df7b52a6a
12 changed files with 581 additions and 19 deletions
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9
absl/synchronization/notification.h
View file

@ -73,7 +73,9 @@ class Notification {
// Notification::HasBeenNotified()
//
// Returns the value of the notification's internal "notified" state.
bool HasBeenNotified() const;
bool HasBeenNotified() const {
return HasBeenNotifiedInternal(&this->notified_yet_);
}
// Notification::WaitForNotification()
//
@ -105,6 +107,11 @@ class Notification {
void Notify();
private:
static inline bool HasBeenNotifiedInternal(
const std::atomic<bool>* notified_yet) {
return notified_yet->load(std::memory_order_acquire);
}
mutable Mutex mutex_;
std::atomic<bool> notified_yet_; // written under mutex_
};