bt-oal/common/oal-event-dispatcher.c

   1 /*
   2  * bluetooth-frwk
   3  *
   4  * Copyright (c) 2012-2013 Samsung Electronics Co., Ltd.
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  *              http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  *
  18  */
  19 #define _OAL_EVENT_DISPATCHER_C_
  20
  21 #include <stdio.h>
  22 #include <glib.h>
  23 #include <dlog.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26
  27 #include "oal-hardware.h"
  28 #include "oal-event.h"
  29 #include "oal-utils.h"
  30 #include "oal-manager.h"
  31
  32 #define EVENT_TRACE(fmt, args...) {LOG_(LOG_ID_SYSTEM, DLOG_INFO, "OAL_EVENT", GREEN(fmt), ##args); \
  33         LOG_(LOG_ID_MAIN, DLOG_INFO, LOG_TAG, GREEN("[OAL_EVENT]"fmt), ##args); }
  34
  35 typedef struct {
  36         int event;
  37         gsize size;
  38         gpointer event_data;
  39 } event_t;
  40
  41 static GMainContext *event_thread_context;
  42 static oal_event_callback event_handler_cb;
  43
  44 static gpointer __event_handler_loop(gpointer user_data)
  45 {
  46         gboolean ret = FALSE;
  47         GMainLoop *event_loop;
  48
  49         /* Set up the thread�s context and run it forever. */
  50         g_main_context_push_thread_default(event_thread_context);
  51
  52         event_loop = g_main_loop_new(event_thread_context, FALSE);
  53         do {
  54                 ret = oal_lib_init(NULL);
  55                 if (ret == FALSE)
  56                         BT_WARN("oal_lib_init failed, trying again...");
  57         } while (ret == FALSE);
  58
  59         g_main_loop_run(event_loop);
  60         g_main_loop_unref(event_loop);
  61
  62         g_main_context_pop_thread_default(event_thread_context);
  63         g_main_context_unref(event_thread_context);
  64
  65         return NULL;
  66 }
  67
  68 static void event_data_free(event_t *event_info)
  69 {
  70         if (event_info->event_data)
  71                 g_free(event_info->event_data);
  72         g_slice_free(event_t, event_info);
  73 }
  74
  75 /* Convert an idle callback into a call to dispatch_idle(). */
  76 static gboolean dispatch_idle(gpointer user_data)
  77 {
  78         event_t *event_info = user_data;
  79         BT_DBG("+");
  80
  81         if (NULL == event_handler_cb)
  82                 BT_ERR("Upstream handler not registered");
  83         else
  84                 (*event_handler_cb)(event_info->event, event_info->event_data, event_info->size);
  85
  86         BT_DBG("-");
  87         return G_SOURCE_REMOVE;
  88 }
  89
  90 static gboolean need_same_context(oal_event_t event)
  91 {
  92         gboolean ret;
  93
  94         switch (event) {
  95         default:
  96                 ret = FALSE;
  97                 break;
  98         }
  99         return ret;
 100 }
 101
 102 void _bt_event_dispatcher_init(oal_event_callback cb)
 103 {
 104         event_handler_cb = cb;
 105         BT_DBG("+");
 106         /* Spawn a background thread and pass it a reference to its
 107          * GMainContext. Retain a reference for use in this thread
 108          * too. */
 109         event_thread_context = g_main_context_new();
 110         g_thread_new("OALEventScheduler", __event_handler_loop, NULL);
 111 }
 112
 113 void send_event_no_trace(oal_event_t event, gpointer event_data, gsize len)
 114 {
 115         event_t *event_info;
 116
 117         /* Create a data closure to pass all the desired variables
 118          * between threads. */
 119         event_info = g_slice_new0(event_t);
 120         event_info->event = event;
 121         event_info->size = len;
 122         event_info->event_data = event_data;
 123         /* Invoke the function. */
 124
 125         if (need_same_context(event)) {
 126                 BT_INFO("Without context change");
 127                 dispatch_idle(event_info);
 128                 event_data_free(event_info);
 129         } else
 130                 g_main_context_invoke_full(event_thread_context,
 131                                 G_PRIORITY_DEFAULT, dispatch_idle,
 132                                 event_info,
 133                                 (GDestroyNotify) event_data_free);
 134 }
 135
 136 void send_event_bda_trace(oal_event_t event, gpointer event_data, gsize len, bt_address_t *address)
 137 {
 138         if(event != OAL_EVENT_BLE_REMOTE_DEVICE_FOUND) {
 139                 if(address) {
 140                         bdstr_t bdstr;
 141                         EVENT_TRACE("[%s] %s", bdt_bd2str(address, &bdstr), str_event[event]);
 142                 } else
 143                         EVENT_TRACE(" %s", str_event[event]);
 144         }
 145         send_event_no_trace(event, event_data, len);
 146 }
 147
 148 void send_event(oal_event_t event, gpointer event_data, gsize len)
 149 {
 150         send_event_bda_trace(event, event_data, len, NULL);
 151 }
 152 #undef _OAL_EVENT_DISPATCHER_C_