pebble/third_party/jerryscript/targets/mbedos5/jerryscript-mbed/jerryscript-mbed-event-loop/EventLoop.h
2025-01-27 11:38:16 -08:00

104 lines
2.7 KiB
C++

/* Copyright (c) 2016 ARM Limited
*
* 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.
*/
#ifndef _JERRYSCRIPT_MBED_EVENT_LOOP_EVENT_LOOP_H
#define _JERRYSCRIPT_MBED_EVENT_LOOP_EVENT_LOOP_H
#include <vector>
#include "jerry-core/jerry-api.h"
#include "Callback.h"
#include "mbed_assert.h"
#include "mbed-events/EventQueue.h"
#include "jerryscript-mbed-util/logging.h"
#include "jerryscript-mbed-event-loop/BoundCallback.h"
extern "C" void exit(int return_code);
namespace mbed {
namespace js {
static const uint32_t EVENT_INTERVAL_MS = 1;
class EventLoop {
private:
static EventLoop instance;
public:
static EventLoop& getInstance() {
return instance;
}
void go() {
while (true) {
queue.dispatch();
}
}
Callback<void()> wrapFunction(jerry_value_t f) {
MBED_ASSERT(jerry_value_is_function(f));
// not sure if this is necessary?
jerry_acquire_value(f);
// we need to return a callback that'll schedule this
Callback<void(uint32_t)> cb_raw(this, &EventLoop::callback);
BoundCallback<void(uint32_t)> *cb = new BoundCallback<void(uint32_t)>(cb_raw, f);
bound_callbacks.push_back(std::make_pair(f, cb));
return *cb;
}
void dropCallback(jerry_value_t f) {
jerry_release_value(f);
for (std::vector<std::pair<jerry_value_t, BoundCallback<void(uint32_t)>*> >::iterator it = bound_callbacks.begin(); it != bound_callbacks.end(); it++) {
std::pair<jerry_value_t, BoundCallback<void(uint32_t)>*> element = *it;
if (element.first == f) {
delete element.second;
break;
}
}
}
void callback(jerry_value_t f) {
queue.call(jerry_call_function, f, jerry_create_null(), (const jerry_value_t*)NULL, 0);
}
void nativeCallback(Callback<void()> cb) {
queue.call(cb);
}
events::EventQueue& getQueue() {
return queue;
}
private:
EventLoop() {}
std::vector<std::pair<jerry_value_t, BoundCallback<void(uint32_t)>*> > bound_callbacks;
events::EventQueue queue;
};
void event_loop();
} // namespace js
} // namespace mbed
#endif // _JERRYSCRIPT_MBED_EVENT_LOOP_EVENT_LOOP_H