ContextBase.cpp revision 0ed9ab19618e840907e343877bf91bd30aba8be9 
1/* Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
2 *
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are
5 * met:
6 *     * Redistributions of source code must retain the above copyright
7 *       notice, this list of conditions and the following disclaimer.
8 *     * Redistributions in binary form must reproduce the above
9 *       copyright notice, this list of conditions and the following
10 *       disclaimer in the documentation and/or other materials provided
11 *       with the distribution.
12 *     * Neither the name of The Linux Foundation, nor the names of its
13 *       contributors may be used to endorse or promote products derived
14 *       from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
23 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
25 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
26 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 */
29#define LOG_NDDEBUG 0
30#define LOG_TAG "LocSvc_CtxBase"
31
32#include <dlfcn.h>
33#include <cutils/sched_policy.h>
34#include <unistd.h>
35#include <ContextBase.h>
36#include <msg_q.h>
37#include <loc_target.h>
38#include <log_util.h>
39#include <loc_log.h>
40
41namespace loc_core {
42
43
44IzatProxyBase* ContextBase::getIzatProxy(const char* libName)
45{
46    IzatProxyBase* proxy = NULL;
47    void* lib = dlopen(libName, RTLD_NOW);
48
49    if ((void*)NULL != lib) {
50        getIzatProxy_t* getter = (getIzatProxy_t*)dlsym(lib, "getIzatProxy");
51        if (NULL != getter) {
52            proxy = (*getter)();
53        }
54    }
55    if (NULL == proxy) {
56        proxy = new IzatProxyBase();
57    }
58    return proxy;
59}
60
61LocApiBase* ContextBase::createLocApi(LOC_API_ADAPTER_EVENT_MASK_T exMask)
62{
63    LocApiBase* locApi = NULL;
64
65    // first if can not be MPQ
66    if (TARGET_MPQ != get_target()) {
67        if (NULL == (locApi = mIzatProxy->getLocApi(mMsgTask, exMask))) {
68            void *handle = NULL;
69            //try to see if LocApiV02 is present
70            if((handle = dlopen("libloc_api_v02.so", RTLD_NOW)) != NULL) {
71                LOC_LOGD("%s:%d]: libloc_api_v02.so is present", __func__, __LINE__);
72                getLocApi_t* getter = (getLocApi_t*)dlsym(handle, "getLocApi");
73                if(getter != NULL) {
74                    LOC_LOGD("%s:%d]: getter is not NULL for LocApiV02", __func__, __LINE__);
75                    locApi = (*getter)(mMsgTask,exMask);
76                }
77            }
78            // only RPC is the option now
79            else {
80                LOC_LOGD("%s:%d]: libloc_api_v02.so is NOT present. Trying RPC",
81                         __func__, __LINE__);
82                handle = dlopen("libloc_api-rpc-qc.so", RTLD_NOW);
83                if (NULL != handle) {
84                    getLocApi_t* getter = (getLocApi_t*)dlsym(handle, "getLocApi");
85                    if (NULL != getter) {
86                        LOC_LOGD("%s:%d]: getter is not NULL in RPC", __func__, __LINE__);
87                        locApi = (*getter)(mMsgTask, exMask);
88                    }
89                }
90            }
91        }
92    }
93
94    // locApi could still be NULL at this time
95    // we would then create a dummy one
96    if (NULL == locApi) {
97        locApi = new LocApiBase(mMsgTask, exMask);
98    }
99
100    return locApi;
101}
102
103ContextBase::ContextBase(const MsgTask* msgTask,
104                         LOC_API_ADAPTER_EVENT_MASK_T exMask,
105                         const char* libName) :
106    mIzatProxy(getIzatProxy(libName)),
107    mMsgTask(msgTask),
108    mLocApi(createLocApi(exMask))
109{
110}
111
112}
113