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https://github.com/hedzr/ticker-cxx

c++17 timing and trigger abilities
https://github.com/hedzr/ticker-cxx

alarm alarmmanager cpp17 scheduled-tasks scheduler ticker timer timingwheel

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c++17 timing and trigger abilities

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README

          

# ticker-cxx

![CMake Build Matrix](https://github.com/hedzr/ticker-cxx/workflows/CMake%20Build%20Matrix/badge.svg) [![GitHub tag (latest SemVer)](https://img.shields.io/github/tag/hedzr/ticker-cxx.svg?label=release)](https://github.com/hedzr/ticker-cxx/releases)

`ticker-cxx` is a C++17 library to provide a set of timing ticker functions, it schedules to trigger your customized tasks.

**WIP**.

## Features

These template classes are provided for scheduling your works mainly:

- timer
- ticker
- alarm

The typical time and period representations, such as `1us`, from `std::literals::chrono_literals`, are valid for the timer setting.

The recommended shortest gap is `1us`.

To support `ns`/`nanoseconds` level as interval gap, you should tune and optimize the whole userland codes and this library. Or, use hardware clock device and driver.

This library is originally designed for the most of scenes of GTD, and long-period backends.

## History

- v0.2.9: security patch for github workflow; fix arch detections in dummy project - affect generating fsm-cxx_config.hh; support c++20 now
- v0.2.7: rename the cor classes to avoid c++ warnings: timer -> timer_t, ticker -> ticker_t, alarm -> alarm_t
- v0.2.5: upgrade cmake scripts for better styles, compatibilities, and structures
- v0.2.3: little improvements for building compatibilities
- v0.2.1: first public release
- ? : the plan started

## Guide

### Uses timer

the one-time timer after a duration (for instance `1us`):

```cpp
void test_timer() {
using namespace std::literals::chrono_literals;

ticker::pool::conditional_wait_for_int count{1};
auto t = ticker::timer_t<>::get();
t->after(1us)
.on([&count] {
auto now = ticker::chrono::now();
ticker::pool::cw_setter cws(count);
printf(" - after [%02d]: %s\n", count.val(), ticker::chrono::format_time_point(now).c_str());
})
.build();

printf("count.wait()\n");
count.wait_for(); // wait_for(2s) or wait()
// t.clear();
printf("end of %s\n", __FUNCTION_NAME__);
}
```

`at()`, `in()` are the synonyms of `after(...)`.

### Uses ticker

runs a ticker after 1us, and stop it once 16 times tick repeated:

```cpp
void test_timer() {
using namespace std::literals::chrono_literals;

ticker::pool::conditional_wait_for_int count{16};
auto t = ticker::ticker_t<>::get();
t->every(1us)
.on([&count]() {
// auto now = ticker::chrono::now();
ticker::pool::cw_setter cws(count);
printf(" - every [%02d]: %s\n", count.val(), ticker::chrono::format_time_point().c_str());
})
.build();

count.wait(); // wait_for(2s) or wait()
}
```

`interval()` could be used instead of `every()`.

### alarm

`class ticker::alarm` provides the periodical job running mechanism. It could be used in a GTD app perfectly.

A simple demo is:

```cpp
void test_alarm() {
using namespace std::literals::chrono_literals;

ticker::pool::conditional_wait_for_int count2{4};
ticker::alarm_t<>::super::get()
->every_month(3)
.on([&count2] {
auto now = ticker::chrono::now();
ticker::pool::cw_setter cws(count2);
printf(" - alarm [%02d]: %s\n", count2.val(), ticker::chrono::format_time_point(now).c_str());
})
.build();
printf("end of %s\n", __FUNCTION_NAME__);
}
```

`ticker::alarm::loop_for(anchors, day_offset, how_many_times, repeat_count)` enables the full functions with Anchors enumerated variables:

```cpp
enum class anchors {
Nothing,

Month, // 'offset' (1..31, -1..-31) day every month; with 'ordinal' times
TwoMonth, // 'offset' day every two month
Quarter, // 'offset' quarter day every quarter
FourMonth, //
FiveMonth, //
SixMonth, // 'offset' day every half a year
SevenMonth, //
EightMonth, // eight
NineMonth, //
TenMonth, // ten
ElevenMonth, //
Year, // 'offset' day every year, this month; with 'ordinal' times

FirstThirdOfMonth, // 'offset' (0..9, -1..-10) day 在每一个上旬; // with 'ordinal' times
MiddleThirdOfMonth, // 'offset' (0..9, -1..-10) day 在每一个中旬; // with 'ordinal' times
LastThirdOfMonth, // 'offset' (0..9, -1..-10) day 在每一个下旬; // with 'ordinal' times

DayInYear, // 'offset' (0-365) day every one year
WeekInMonth, // 'offset' (0..5) week every one month
WeekInYear, // 'offset' (0..51) week every one year
Week, // 'offset' (0..6) day every one week

// ...
};
```

## Build Options

### Build with CMake

> 1. gcc 10+: passed
> 2. clang 12+: passed
> 3. msvc build tool 16.7.2, 16.8.5 (VS2019 or Build Tool) passed

ninja is optional for faster building.

```bash
# generate the building config
cmake -B build/
# build the whole project (with unittest too)
cmake --build build/

# configure with ninja
cmake -S . -B build/ -G Ninja

# CTest
cmake -E chdir build ctest

# install
cmake --install build/
# Or:cmake --build build/ --target install
#
# Sometimes sudo it:
# sudo cmake --build build/ --target install
# Or:
# cmake --install build/ --prefix ./install --strip
# sudo cp -R ./install/include/* /usr/local/include/
# sudo cp -R ./install/lib/cmake/fsm_cxx /usr/local/lib/cmake/
```

### Other CMake Options

1. `TICKER_CXX_BUILD_TESTS_EXAMPLES`=OFF
2. `TICKER_CXX_BUILD_DOCS`=OFF
3. ...

### CMake Options with C++ Macros

1. `TICKER_CXX_ENABLE_ASSERTIONS`
2. `TICKER_CXX_ENABLE_PRECONDITION_CHECKS`=ON
3. `TICKER_CXX_ENABLE_THREAD_POOL_READY_SIGNAL` (always be 1)
4. `TICKER_CXX_TEST_THREAD_POOL_DBGOUT`
5. `TICKER_CXX_UNIT_TEST`
6. `USE_DEBUG`, `USE_DEBUG_MALLOC`
7. ...

### Macros after include `ticker-def.hh`

1. `_DEBUG`, `DEBUG`
2. ...

## Thanks to JODL

Thanks to [JetBrains](https://www.jetbrains.com/?from=ticker-cxx) for donating product licenses to help develop **ticker-cxx** [![jetbrains](https://gist.githubusercontent.com/hedzr/447849cb44138885e75fe46f1e35b4a0/raw/bedfe6923510405ade4c034c5c5085487532dee4/jetbrains-variant-4.svg)](https://www.jetbrains.com/?from=hedzr/ticker-cxx)

## LICENSE

Apache 2.0