Actor模型實現C++框架:CAF
CAF —— C++ actor 模型框架,借鑒了 erlang 和 akka 的actor思想。使用C++現代編程規模實現。特點是:輕量級、分布式、簡單、可適應以及無鎖。
下載和構建:
git clone https://github.com/actor-framework/actor-framework cd actor-framework ./configure make make install [as root, optional]
示例代碼:
#include <string>
#include <iostream>
#include "caf/all.hpp"
using namespace std;
using namespace caf;
behavior mirror(event_based_actor* self) {
// return the (initial) actor behavior
return {
// a handler for messages containing a single string
// that replies with a string
[=](const string& what) -> string {
// prints "Hello World!" via aout
// (thread-safe cout wrapper)
aout(self) << what << endl;
// terminates this actor
// ('become' otherwise loops forever)
self->quit();
// reply "!dlroW olleH"
return string(what.rbegin(), what.rend());
}
};
}
void hello_world(event_based_actor* self, const actor& buddy) {
// send "Hello World!" to our buddy ...
self->sync_send(buddy, "Hello World!").then(
// ... wait for a response ...
[=](const string& what) {
// ... and print it
aout(self) << what << endl;
}
);
}
int main() {
// create a new actor that calls 'mirror()'
auto mirror_actor = spawn(mirror);
// create another actor that calls 'hello_world(mirror_actor)';
spawn(hello_world, mirror_actor);
// wait until all other actors we have spawned are done
await_all_actors_done();
// run cleanup code before exiting main
shutdown();
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