Klagarge/MSE-CSEL
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feat(lab03): add epoll

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This commit is contained in:
Rémi Heredero
2026-04-24 12:45:11 +00:00
parent 5592c9c0fe
commit 8561386973
1 changed files with 25 additions and 0 deletions
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25
src/03-led-controller/main.c
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@@ -32,6 +32,7 @@
#include <unistd.h> #include <unistd.h>
#include <stdio.h> #include <stdio.h>
#include <sys/timerfd.h> #include <sys/timerfd.h>
#include <sys/epoll.h>
/* /*
* status led - gpioa.10 --> gpio10 * status led - gpioa.10 --> gpio10
@@ -45,6 +46,7 @@
typedef struct { typedef struct {
int timer_fd; int timer_fd;
int epoll_fd;
} ThreadData; } ThreadData;
static int open_led() { static int open_led() {
@@ -129,6 +131,17 @@ static void configure_timer(int* timer_fd, long period_ms) {
exit(1); exit(1);
} }
} }
void link_timer_to_epoll(int* timer_fd, int* epoll_fd) {
static struct epoll_event ev;
ev.events = EPOLLIN;
ev.data.fd = *timer_fd;
if (epoll_ctl(*epoll_fd, EPOLL_CTL_ADD, *timer_fd, &ev) == -1) {
perror("ERROR while add timerfd to epoll");
exit(1);
}
}
int main(int argc, char* argv[]) { int main(int argc, char* argv[]) {
ThreadData data; ThreadData data;
pthread_t thread; pthread_t thread;
@@ -142,6 +155,18 @@ int main(int argc, char* argv[]) {
configure_timer(&data.timer_fd, DEFAULT_TIME_MS); configure_timer(&data.timer_fd, DEFAULT_TIME_MS);
// Create epoll instance
data.epoll_fd = epoll_create1(0);
if (data.epoll_fd == -1) {
perror("ERROR while create epoll");
exit(1);
}
link_timer_to_epoll(&data.timer_fd, &data.epoll_fd);
if (pthread_create(&thread, NULL, timer_thread, &data) != 0) { if (pthread_create(&thread, NULL, timer_thread, &data) != 0) {