130 lines
2.7 KiB
C++
130 lines
2.7 KiB
C++
#include "PinMonitor.h"
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#include "DevUtil.h"
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#include <unistd.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <sys/epoll.h>
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#include <thread>
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#include <iostream>
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#include "StopWatch.h"
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#include <errno.h>
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#include <stdlib.h>
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#include "applog.h"
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#include "stringex.hpp"
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static const std::string loggername = "PinMonitor";
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PinMonitor::PinMonitor(unsigned int pinNum, std::function<void(int)> call_back)
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: pin(pinNum)
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{
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LOG_INIT();
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pin.setDirection(Gpio::in);
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pin.setEdge(Gpio::falling);
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this->call_back = call_back;
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thread_monitor = std::thread(&PinMonitor::monitor, this);
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//printf("PinMonitor threadid = %d \n",thread_monitor.get_id());
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// int priority=sched_get_priority_max(SCHED_FIFO);
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// if(priority==-1)
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// {
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// printf("sched_get_priority_max error \n");
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// }
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// thparm.sched_priority = priority;
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// if(pthread_setschedparam(thread_monitor.native_handle(),SCHED_FIFO,&thparm))
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// {
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// printf("failed to error set pthread_setschedparam \n");
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// }
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}
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PinMonitor::~PinMonitor()
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{
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bMonitor = false;
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if (thread_monitor.joinable())
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thread_monitor.join();
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}
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void PinMonitor::monitor()
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{
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pollfd pfd;
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int ret = 0;
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pfd.fd = -1;
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char buf[8];
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int num;
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StopWatch sw;
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pfd.fd = open(pin.getValuePath().c_str(), O_RDONLY);
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if (pfd.fd < 0)
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ret = -1;
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pfd.events = POLLPRI;
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num = read(pfd.fd, buf, 8); // This is to clear the avaible read
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while (bMonitor)
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{
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ret = poll(&pfd, 1, 1000);
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if (ret > 0)
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{
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if (pfd.revents & POLLPRI)
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{
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lseek(pfd.fd, 0, SEEK_SET);
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num = read(pfd.fd, buf, 8);
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buf[num - 1] = '\0';
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ret = atoi(buf);
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//LOG_TRACE("poll call");
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if (call_back)
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{
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sw.reset();
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call_back(pin.getPort());
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LOG_TRACE(string_format("poll call times = %.2f \n",sw.elapsed_ms()));
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}
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sw.reset();
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while(sw.elapsed_ms() < 10)
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{
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ret = poll(&pfd, 1, 1);
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if (ret > 0)
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{
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num = read(pfd.fd, buf, 8);
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buf[num - 1] = '\0';
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ret = atoi(buf);
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//printf("pMonitor nread = %d ret val = %d \n",num,ret);
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}
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}
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}
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}
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}
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close(pfd.fd);
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// int n;
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// int epfd = epoll_create(1);
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// int fd = open(pin.getValuePath().c_str(), O_RDONLY);
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// char buf[8];
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// //printf("open returned %d: %s\n", fd, strerror(errno));
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// if (fd > 0)
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// {
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// struct epoll_event ev;
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// struct epoll_event events;
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// ev.events = EPOLLPRI;
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// ev.data.fd = fd;
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// n = epoll_ctl(epfd, EPOLL_CTL_ADD, fd, &ev);
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// while (bMonitor)
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// {
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// n = epoll_wait(epfd, &events, 1, 1000);
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// if (n > 0)
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// {
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// n = lseek(fd, 0, SEEK_SET);
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// n = read(fd, buf, 8);
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// buf[n - 1] = '\0';
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// auto ret = atoi(buf);
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// if (call_back)
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// call_back(pin.getPort());
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// }
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// }
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// }
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// close(fd);
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} |