ST / ST_Events-old

This is a fork of the `events` subdirectory of https://github.com/ARMmbed/mbed-os

Dependents:   HelloWorld_CCA01M1 HelloWorld_CCA02M1 CI-data-logger-server HelloWorld_CCA02M1 ... more

This is a fork of the events subdirectory of https://github.com/ARMmbed/mbed-os.

Note, you must import this library with import name: events!!!

mbed_shared_queues.cpp@9832:b95afde9ef7e, 2017-09-05 (annotated)

Committer:
Wolfgang Betz
Date:
Tue Sep 05 09:09:24 2017 +0200
Revision:
9832:b95afde9ef7e
Parent:
9831:68f03f5d2dd2 
Merge branch 'master' of hg::http://developer.mbed.org/teams/ST/code/ST_Events into events-split

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Kevin Bracey 9831:68f03f5d2dd2 1 /* events
Kevin Bracey 9831:68f03f5d2dd2 2 * Copyright (c) 2017 ARM Limited
Kevin Bracey 9831:68f03f5d2dd2 3 *
Kevin Bracey 9831:68f03f5d2dd2 4 * Licensed under the Apache License, Version 2.0 (the "License");
Kevin Bracey 9831:68f03f5d2dd2 5 * you may not use this file except in compliance with the License.
Kevin Bracey 9831:68f03f5d2dd2 6 * You may obtain a copy of the License at
Kevin Bracey 9831:68f03f5d2dd2 7 *
Kevin Bracey 9831:68f03f5d2dd2 8 * http://www.apache.org/licenses/LICENSE-2.0
Kevin Bracey 9831:68f03f5d2dd2 9 *
Kevin Bracey 9831:68f03f5d2dd2 10 * Unless required by applicable law or agreed to in writing, software
Kevin Bracey 9831:68f03f5d2dd2 11 * distributed under the License is distributed on an "AS IS" BASIS,
Kevin Bracey 9831:68f03f5d2dd2 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Kevin Bracey 9831:68f03f5d2dd2 13 * See the License for the specific language governing permissions and
Kevin Bracey 9831:68f03f5d2dd2 14 * limitations under the License.
Kevin Bracey 9831:68f03f5d2dd2 15 */
Kevin Bracey 9831:68f03f5d2dd2 16
Kevin Bracey 9831:68f03f5d2dd2 17 #include "events/mbed_shared_queues.h"
Kevin Bracey 9831:68f03f5d2dd2 18 #include "mbed.h"
Kevin Bracey 9831:68f03f5d2dd2 19
Kevin Bracey 9831:68f03f5d2dd2 20 using namespace events;
Kevin Bracey 9831:68f03f5d2dd2 21
Kevin Bracey 9831:68f03f5d2dd2 22 namespace mbed {
Kevin Bracey 9831:68f03f5d2dd2 23
Kevin Bracey 9831:68f03f5d2dd2 24 #ifdef MBED_CONF_RTOS_PRESENT
Kevin Bracey 9831:68f03f5d2dd2 25 /* Create an event queue, and start the thread that dispatches it. Static
Kevin Bracey 9831:68f03f5d2dd2 26 * variables mean this happens once the first time each template instantiation
Kevin Bracey 9831:68f03f5d2dd2 27 * is called. This is currently instantiated no more than twice.
Kevin Bracey 9831:68f03f5d2dd2 28 */
Kevin Bracey 9831:68f03f5d2dd2 29 template
Kevin Bracey 9831:68f03f5d2dd2 30 <osPriority Priority, size_t QueueSize, size_t StackSize>
Kevin Bracey 9831:68f03f5d2dd2 31 EventQueue *do_shared_event_queue_with_thread()
Kevin Bracey 9831:68f03f5d2dd2 32 {
Kevin Bracey 9831:68f03f5d2dd2 33 static uint64_t queue_buffer[QueueSize / sizeof(uint64_t)];
Kevin Bracey 9831:68f03f5d2dd2 34 static EventQueue queue(sizeof queue_buffer, (unsigned char *) queue_buffer);
Kevin Bracey 9831:68f03f5d2dd2 35
Kevin Bracey 9831:68f03f5d2dd2 36 static uint64_t stack[StackSize / sizeof(uint64_t)];
Kevin Bracey 9831:68f03f5d2dd2 37 static Thread thread(Priority, StackSize, (unsigned char *) stack);
Kevin Bracey 9831:68f03f5d2dd2 38
Kevin Bracey 9831:68f03f5d2dd2 39 Thread::State state = thread.get_state();
Kevin Bracey 9831:68f03f5d2dd2 40 if (state == Thread::Inactive || state == Thread::Deleted) {
Kevin Bracey 9831:68f03f5d2dd2 41 osStatus status = thread.start(callback(&queue, &EventQueue::dispatch_forever));
Kevin Bracey 9831:68f03f5d2dd2 42 MBED_ASSERT(status == osOK);
Kevin Bracey 9831:68f03f5d2dd2 43 if (status != osOK) {
Kevin Bracey 9831:68f03f5d2dd2 44 return NULL;
Kevin Bracey 9831:68f03f5d2dd2 45 }
Kevin Bracey 9831:68f03f5d2dd2 46 }
Kevin Bracey 9831:68f03f5d2dd2 47
Kevin Bracey 9831:68f03f5d2dd2 48 return &queue;
Kevin Bracey 9831:68f03f5d2dd2 49 }
Kevin Bracey 9831:68f03f5d2dd2 50 #endif
Kevin Bracey 9831:68f03f5d2dd2 51
Kevin Bracey 9831:68f03f5d2dd2 52 EventQueue *mbed_event_queue()
Kevin Bracey 9831:68f03f5d2dd2 53 {
Kevin Bracey 9831:68f03f5d2dd2 54 #if MBED_CONF_EVENTS_SHARED_DISPATCH_FROM_APPLICATION || !defined MBED_CONF_RTOS_PRESENT
Kevin Bracey 9831:68f03f5d2dd2 55 /* Only create the EventQueue, but no dispatching thread */
Kevin Bracey 9831:68f03f5d2dd2 56 static unsigned char queue_buffer[MBED_CONF_EVENTS_SHARED_EVENTSIZE];
Kevin Bracey 9831:68f03f5d2dd2 57 static EventQueue queue(sizeof queue_buffer, queue_buffer);
Kevin Bracey 9831:68f03f5d2dd2 58
Kevin Bracey 9831:68f03f5d2dd2 59 return &queue;
Kevin Bracey 9831:68f03f5d2dd2 60 #else
Kevin Bracey 9831:68f03f5d2dd2 61 return do_shared_event_queue_with_thread<osPriorityNormal, MBED_CONF_EVENTS_SHARED_EVENTSIZE, MBED_CONF_EVENTS_SHARED_STACKSIZE>();
Kevin Bracey 9831:68f03f5d2dd2 62 #endif
Kevin Bracey 9831:68f03f5d2dd2 63 }
Kevin Bracey 9831:68f03f5d2dd2 64
Kevin Bracey 9831:68f03f5d2dd2 65 #ifdef MBED_CONF_RTOS_PRESENT
Kevin Bracey 9831:68f03f5d2dd2 66 EventQueue *mbed_highprio_event_queue()
Kevin Bracey 9831:68f03f5d2dd2 67 {
Kevin Bracey 9831:68f03f5d2dd2 68 return do_shared_event_queue_with_thread<osPriorityHigh, MBED_CONF_EVENTS_SHARED_HIGHPRIO_EVENTSIZE, MBED_CONF_EVENTS_SHARED_HIGHPRIO_STACKSIZE>();
Kevin Bracey 9831:68f03f5d2dd2 69 }
Kevin Bracey 9831:68f03f5d2dd2 70 #endif
Kevin Bracey 9831:68f03f5d2dd2 71
Kevin Bracey 9831:68f03f5d2dd2 72 }