105 lines
2.5 KiB
C++
105 lines
2.5 KiB
C++
|
/*
|
||
|
|
* Copyright (C) 2008 The Android Open Source Project
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <sys/socket.h>
|
||
|
|
#include <sys/select.h>
|
||
|
|
#include <sys/time.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <sys/un.h>
|
||
|
|
|
||
|
|
#define LOG_TAG "WifiStatusPoller"
|
||
|
|
#include <cutils/log.h>
|
||
|
|
|
||
|
|
#include "WifiStatusPoller.h"
|
||
|
|
#include "IWifiStatusPollerHandler.h"
|
||
|
|
|
||
|
|
|
||
|
|
WifiStatusPoller::WifiStatusPoller(IWifiStatusPollerHandler *handler) :
|
||
|
|
mHandlers(handler) {
|
||
|
|
mPollingInterval = 5;
|
||
|
|
mStarted = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
int WifiStatusPoller::start() {
|
||
|
|
|
||
|
|
if (pipe(mCtrlPipe))
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
if (pthread_create(&mThread, NULL, WifiStatusPoller::threadStart, this))
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int WifiStatusPoller::stop() {
|
||
|
|
char c = 0;
|
||
|
|
|
||
|
|
if (write(mCtrlPipe[1], &c, 1) != 1) {
|
||
|
|
LOGE("Error writing to control pipe (%s)", strerror(errno));
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
void *ret;
|
||
|
|
if (pthread_join(mThread, &ret)) {
|
||
|
|
LOGE("Error joining to listener thread (%s)", strerror(errno));
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
close(mCtrlPipe[0]);
|
||
|
|
close(mCtrlPipe[1]);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void *WifiStatusPoller::threadStart(void *obj) {
|
||
|
|
WifiStatusPoller *me = reinterpret_cast<WifiStatusPoller *>(obj);
|
||
|
|
|
||
|
|
me->mStarted = true;
|
||
|
|
LOGD("Starting");
|
||
|
|
me->run();
|
||
|
|
me->mStarted = false;
|
||
|
|
LOGD("Stopping");
|
||
|
|
pthread_exit(NULL);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
void WifiStatusPoller::run() {
|
||
|
|
|
||
|
|
while(1) {
|
||
|
|
struct timeval to;
|
||
|
|
fd_set read_fds;
|
||
|
|
int rc = 0;
|
||
|
|
int max = 0;
|
||
|
|
|
||
|
|
FD_ZERO(&read_fds);
|
||
|
|
to.tv_usec = 0;
|
||
|
|
to.tv_sec = mPollingInterval;
|
||
|
|
|
||
|
|
FD_SET(mCtrlPipe[0], &read_fds);
|
||
|
|
max = mCtrlPipe[0];
|
||
|
|
|
||
|
|
if ((rc = select(max + 1, &read_fds, NULL, NULL, &to)) < 0) {
|
||
|
|
LOGE("select failed (%s)", strerror(errno));
|
||
|
|
sleep(1);
|
||
|
|
continue;
|
||
|
|
} else if (!rc) {
|
||
|
|
mHandlers->onStatusPollInterval();
|
||
|
|
}
|
||
|
|
if (FD_ISSET(mCtrlPipe[0], &read_fds))
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|