io: io_always, and zero-length operations support.

[ccan] / ccan / io / test / run-19-always.c

diff --git a/ccan/io/test/run-19-always.c b/ccan/io/test/run-19-always.c
new file mode 100644 (file)
index 0000000..e6413fc
--- /dev/null
+++ b/ccan/io/test/run-19-always.c
@@ -0,0 +1,133 @@
+#include <ccan/io/io.h>
+/* Include the C files directly. */
+#include <ccan/io/poll.c>
+#include <ccan/io/io.c>
+#include <ccan/tap/tap.h>
+#include <sys/wait.h>
+#include <stdio.h>
+
+#ifndef PORT
+#define PORT "65019"
+#endif
+
+struct data {
+       int state;
+       size_t bytes;
+       char *buf;
+};
+
+static void finish_ok(struct io_conn *conn, struct data *d)
+{
+       ok1(d->state == 1);
+       d->state++;
+       io_break(d, io_idle());
+}
+
+static struct io_plan write_buf(struct io_conn *conn, struct data *d)
+{
+       return io_write(d->buf, d->bytes, io_close_cb, d);
+}
+
+static void init_conn(int fd, struct data *d)
+{
+       ok1(d->state == 0);
+       d->state++;
+       /* Empty read should run immediately... */
+       io_set_finish(io_new_conn(fd, io_read(NULL, 0, write_buf, d)),
+                     finish_ok, d);
+}
+
+static int make_listen_fd(const char *port, struct addrinfo **info)
+{
+       int fd, on = 1;
+       struct addrinfo *addrinfo, hints;
+
+       memset(&hints, 0, sizeof(hints));
+       hints.ai_family = AF_UNSPEC;
+       hints.ai_socktype = SOCK_STREAM;
+       hints.ai_flags = AI_PASSIVE;
+       hints.ai_protocol = 0;
+
+       if (getaddrinfo(NULL, port, &hints, &addrinfo) != 0)
+               return -1;
+
+       fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+                   addrinfo->ai_protocol);
+       if (fd < 0)
+               return -1;
+
+       setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+       if (bind(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0) {
+               close(fd);
+               return -1;
+       }
+       if (listen(fd, 1) != 0) {
+               close(fd);
+               return -1;
+       }
+       *info = addrinfo;
+       return fd;
+}
+
+static void read_from_socket(size_t bytes, const struct addrinfo *addrinfo)
+{
+       int fd, done, r;
+       char buf[100];
+
+       fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+                   addrinfo->ai_protocol);
+       if (fd < 0)
+               exit(1);
+       if (connect(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0)
+               exit(2);
+
+       for (done = 0; done < bytes; done += r) {
+               r = read(fd, buf, sizeof(buf));
+               if (r < 0)
+                       exit(3);
+               done += r;
+       }
+       close(fd);
+}
+
+int main(void)
+{
+       struct data *d = malloc(sizeof(*d));
+       struct addrinfo *addrinfo;
+       struct io_listener *l;
+       int fd, status;
+
+       /* This is how many tests you plan to run */
+       plan_tests(9);
+       d->state = 0;
+       d->bytes = 1024*1024;
+       d->buf = malloc(d->bytes);
+       memset(d->buf, 'a', d->bytes);
+       fd = make_listen_fd(PORT, &addrinfo);
+       ok1(fd >= 0);
+       l = io_new_listener(fd, init_conn, d);
+       ok1(l);
+       fflush(stdout);
+       if (!fork()) {
+               io_close_listener(l);
+               read_from_socket(d->bytes, addrinfo);
+               freeaddrinfo(addrinfo);
+               free(d->buf);
+               free(d);
+               exit(0);
+       }
+       ok1(io_loop() == d);
+       ok1(d->state == 2);
+
+       ok1(wait(&status));
+       ok1(WIFEXITED(status));
+       ok1(WEXITSTATUS(status) == 0);
+
+       freeaddrinfo(addrinfo);
+       free(d->buf);
+       free(d);
+       io_close_listener(l);
+
+       /* This exits depending on whether all tests passed */
+       return exit_status();
+}