add epoll.c tests
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freemine
parent
a649f55195
commit
c46f6ac022
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@ -0,0 +1,183 @@
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#ifdef __APPLE__
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#include "eok.h"
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#else
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#include <sys/epoll.h>
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#endif
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <string.h>
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#include <arpa/inet.h>
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#include <libgen.h>
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#define D(fmt, ...) fprintf(stderr, "%s[%d]%s(): " fmt "\n", basename(__FILE__), __LINE__, __func__, ##__VA_ARGS__)
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#define A(statement, fmt, ...) do { \
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if (statement) break; \
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fprintf(stderr, "%s[%d]%s(): assert [%s] failed: %d[%s]: " fmt "\n", \
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basename(__FILE__), __LINE__, __func__, \
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#statement, errno, strerror(errno), \
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##__VA_ARGS__); \
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abort(); \
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} while (0)
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#define E(fmt, ...) do { \
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fprintf(stderr, "%s[%d]%s(): %d[%s]: " fmt "\n", \
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basename(__FILE__), __LINE__, __func__, \
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errno, strerror(errno), \
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##__VA_ARGS__); \
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} while (0)
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typedef struct ep_s ep_t;
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struct ep_s {
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int ep;
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pthread_mutex_t lock;
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int sv[2]; // 0 for read, 1 for write;
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pthread_t thread;
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volatile unsigned int stopping:1;
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volatile unsigned int waiting:1;
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volatile unsigned int wakenup:1;
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};
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static int ep_dummy = 0;
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static ep_t* ep_create(void);
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static void ep_destroy(ep_t *ep);
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static void* routine(void* arg);
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static int open_connect(unsigned short port);
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int main(int argc, char *argv[]) {
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ep_t* ep = ep_create();
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A(ep, "failed");
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int skt = open_connect(6789);
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if (skt!=-1) {
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struct epoll_event ev = {0};
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ev.events = EPOLLIN | EPOLLERR | EPOLLHUP | EPOLLRDHUP;
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ev.data.ptr = &skt;
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A(0==epoll_ctl(ep->ep, EPOLL_CTL_ADD, skt, &ev), "");
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}
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getchar();
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ep_destroy(ep);
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D("");
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return 0;
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}
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ep_t* ep_create(void) {
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ep_t *ep = (ep_t*)calloc(1, sizeof(*ep));
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A(ep, "out of memory");
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A(-1!=(ep->ep = epoll_create(1)), "");
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ep->sv[0] = -1;
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ep->sv[1] = -1;
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A(0==socketpair(AF_LOCAL, SOCK_STREAM, 0, ep->sv), "");
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A(0==pthread_mutex_init(&ep->lock, NULL), "");
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A(0==pthread_mutex_lock(&ep->lock), "");
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struct epoll_event ev = {0};
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ev.events = EPOLLIN;
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ev.data.ptr = &ep_dummy;
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A(0==epoll_ctl(ep->ep, EPOLL_CTL_ADD, ep->sv[0], &ev), "");
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A(0==pthread_create(&ep->thread, NULL, routine, ep), "");
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A(0==pthread_mutex_unlock(&ep->lock), "");
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return ep;
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}
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static void ep_destroy(ep_t *ep) {
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A(ep, "invalid argument");
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ep->stopping = 1;
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A(1==send(ep->sv[1], "1", 1, 0), "");
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A(0==pthread_join(ep->thread, NULL), "");
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A(0==pthread_mutex_destroy(&ep->lock), "");
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A(0==close(ep->sv[0]), "");
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A(0==close(ep->sv[1]), "");
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A(0==close(ep->ep), "");
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free(ep);
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}
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static void* routine(void* arg) {
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A(arg, "invalid argument");
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ep_t *ep = (ep_t*)arg;
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while (!ep->stopping) {
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struct epoll_event evs[10] = {0};
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A(0==pthread_mutex_lock(&ep->lock), "");
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A(ep->waiting==0, "internal logic error");
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ep->waiting = 1;
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A(0==pthread_mutex_unlock(&ep->lock), "");
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int r = epoll_wait(ep->ep, evs, sizeof(evs)/sizeof(evs[0]), -1);
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A(r>0, "indefinite epoll_wait shall not timeout");
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A(0==pthread_mutex_lock(&ep->lock), "");
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A(ep->waiting==1, "internal logic error");
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ep->waiting = 0;
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A(0==pthread_mutex_unlock(&ep->lock), "");
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for (int i=0; i<r; ++i) {
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struct epoll_event *ev = evs + i;
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if (ev->data.ptr == &ep_dummy) {
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char c = '\0';
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A(1==recv(ep->sv[0], &c, 1, 0), "internal logic error");
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A(0==pthread_mutex_lock(&ep->lock), "");
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ep->wakenup = 0;
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A(0==pthread_mutex_unlock(&ep->lock), "");
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D("........");
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continue;
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}
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A(ev->data.ptr, "internal logic error");
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int skt = *(int*)ev->data.ptr;
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if (ev->events & EPOLLIN) {
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char buf[4];
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int n = recv(skt, buf, sizeof(buf)-1, 0);
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A(n>=0 && n<sizeof(buf), "internal logic error");
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buf[n] = '\0';
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fprintf(stderr, "events[%x]:%s\n", ev->events, buf);
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}
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if (ev->events & EPOLLRDHUP) {
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A(0==epoll_ctl(ep->ep, EPOLL_CTL_DEL, skt, NULL), "");
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}
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continue;
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}
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}
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return NULL;
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}
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static int open_connect(unsigned short port) {
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int r = 0;
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int skt = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if (skt==-1) {
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E("socket() failed");
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return -1;
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}
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do {
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struct sockaddr_in si = {0};
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si.sin_family = AF_INET;
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si.sin_addr.s_addr = inet_addr("127.0.0.1");
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si.sin_port = htons(port);
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r = connect(skt, (struct sockaddr*)&si, sizeof(si));
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if (r) {
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E("connect(%u) failed", port);
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break;
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}
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memset(&si, 0, sizeof(si));
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socklen_t len = sizeof(si);
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r = getsockname(skt, (struct sockaddr *)&si, &len);
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if (r) {
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E("getsockname() failed");
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}
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A(len==sizeof(si), "internal logic error");
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D("connected: %d", ntohs(si.sin_port));
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return skt;
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} while (0);
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close(skt);
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return -1;
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}
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