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Wake all sleeping threads when leaving suspend

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std::condition_variable::wait_for does not count time spent in sleep
mode, resulting in longer than expected waits.
This commit is contained in:
Patrick Nicolas
2023-06-07 10:17:42 +02:00
parent c5379fa52d
commit 3c9cbc99d7
4 changed files with 73 additions and 2 deletions
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9
include/util/prepare_for_sleep.h Normal file
View File

@ -0,0 +1,9 @@
#pragma once
#include "SafeSignal.hpp"
namespace waybar::util {
// Get a signal emited with value true when entering sleep, and false when exiting
SafeSignal<bool>& prepare_for_sleep();
} // namespace waybar::util

16
include/util/sleeper_thread.hpp
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@ -6,6 +6,8 @@
#include <functional>
#include <thread>
#include "prepare_for_sleep.h"
namespace waybar::util {
/**
@ -33,7 +35,11 @@ class SleeperThread {
signal_ = false;
func();
}
}} {}
}} {
connection_ = prepare_for_sleep().connect([this](bool sleep) {
if (not sleep) wake_up();
});
}
SleeperThread& operator=(std::function<void()> func) {
thread_ = std::thread([this, func] {
@ -42,6 +48,11 @@ class SleeperThread {
func();
}
});
if (connection_.empty()) {
connection_ = prepare_for_sleep().connect([this](bool sleep) {
if (not sleep) wake_up();
});
}
return *this;
}
@ -61,7 +72,7 @@ class SleeperThread {
return condvar_.wait_until(lk, time_point, [this] { return signal_ || !do_run_; });
}
auto wake_up() {
void wake_up() {
{
std::lock_guard<std::mutex> lck(mutex_);
signal_ = true;
@ -96,6 +107,7 @@ class SleeperThread {
std::mutex mutex_;
bool do_run_ = true;
bool signal_ = false;
sigc::connection connection_;
};
} // namespace waybar::util