/src/libeio/demo.c
http://github.com/jacksonh/manos · C · 194 lines · 152 code · 40 blank · 2 comment · 10 complexity · fe5038b1706df0efbdc5d24446dc445c MD5 · raw file
- #include <stdio.h>
- #include <stdlib.h>
- #include <unistd.h>
- #include <poll.h>
- #include <string.h>
- #include <assert.h>
- #include <fcntl.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include "eio.h"
- int respipe [2];
- void
- want_poll (void)
- {
- char dummy;
- printf ("want_poll ()\n");
- write (respipe [1], &dummy, 1);
- }
- void
- done_poll (void)
- {
- char dummy;
- printf ("done_poll ()\n");
- read (respipe [0], &dummy, 1);
- }
- void
- event_loop (void)
- {
- // an event loop. yeah.
- struct pollfd pfd;
- pfd.fd = respipe [0];
- pfd.events = POLLIN;
- printf ("\nentering event loop\n");
- while (eio_nreqs ())
- {
- poll (&pfd, 1, -1);
- printf ("eio_poll () = %d\n", eio_poll ());
- }
- printf ("leaving event loop\n");
- }
- int
- res_cb (eio_req *req)
- {
- printf ("res_cb(%d|%s) = %d\n", req->type, req->data ? req->data : "?", EIO_RESULT (req));
- if (req->result < 0)
- abort ();
- return 0;
- }
- int
- readdir_cb (eio_req *req)
- {
- char *buf = (char *)EIO_BUF (req);
- printf ("readdir_cb = %d\n", EIO_RESULT (req));
- if (EIO_RESULT (req) < 0)
- return 0;
- while (EIO_RESULT (req)--)
- {
- printf ("readdir = <%s>\n", buf);
- buf += strlen (buf) + 1;
- }
- return 0;
- }
- int
- stat_cb (eio_req *req)
- {
- struct stat *buf = EIO_STAT_BUF (req);
- if (req->type == EIO_FSTAT)
- printf ("fstat_cb = %d\n", EIO_RESULT (req));
- else
- printf ("stat_cb(%s) = %d\n", EIO_PATH (req), EIO_RESULT (req));
- if (!EIO_RESULT (req))
- printf ("stat size %d perm 0%o\n", buf->st_size, buf->st_mode & 0777);
- return 0;
- }
- int
- read_cb (eio_req *req)
- {
- unsigned char *buf = (unsigned char *)EIO_BUF (req);
- printf ("read_cb = %d (%02x%02x%02x%02x %02x%02x%02x%02x)\n",
- EIO_RESULT (req),
- buf [0], buf [1], buf [2], buf [3],
- buf [4], buf [5], buf [6], buf [7]);
- return 0;
- }
- int last_fd;
- int
- open_cb (eio_req *req)
- {
- printf ("open_cb = %d\n", EIO_RESULT (req));
- last_fd = EIO_RESULT (req);
- return 0;
- }
- int
- main (void)
- {
- printf ("pipe ()\n");
- if (pipe (respipe)) abort ();
- printf ("eio_init ()\n");
- if (eio_init (want_poll, done_poll)) abort ();
- do
- {
- /* avoid relative paths yourself(!) */
- eio_mkdir ("eio-test-dir", 0777, 0, res_cb, "mkdir");
- eio_nop (0, res_cb, "nop");
- event_loop ();
- eio_stat ("eio-test-dir", 0, stat_cb, "stat");
- eio_lstat ("eio-test-dir", 0, stat_cb, "stat");
- eio_open ("eio-test-dir/eio-test-file", O_RDWR | O_CREAT, 0777, 0, open_cb, "open");
- eio_symlink ("test", "eio-test-dir/eio-symlink", 0, res_cb, "symlink");
- eio_mknod ("eio-test-dir/eio-fifo", S_IFIFO, 0, 0, res_cb, "mknod");
- event_loop ();
- eio_utime ("eio-test-dir", 12345.678, 23456.789, 0, res_cb, "utime");
- eio_futime (last_fd, 92345.678, 93456.789, 0, res_cb, "futime");
- eio_chown ("eio-test-dir", getuid (), getgid (), 0, res_cb, "chown");
- eio_fchown (last_fd, getuid (), getgid (), 0, res_cb, "fchown");
- eio_fchmod (last_fd, 0723, 0, res_cb, "fchmod");
- eio_readdir ("eio-test-dir", 0, 0, readdir_cb, "readdir");
- eio_readdir ("/nonexistant", 0, 0, readdir_cb, "readdir");
- eio_fstat (last_fd, 0, stat_cb, "stat");
- eio_write (last_fd, "test\nfail\n", 10, 4, 0, res_cb, "write");
- event_loop ();
- eio_read (last_fd, 0, 8, 0, EIO_PRI_DEFAULT, read_cb, "read");
- eio_readlink ("eio-test-dir/eio-symlink", 0, res_cb, "readlink");
- event_loop ();
- eio_dup2 (1, 2, EIO_PRI_DEFAULT, res_cb, "dup"); // dup stdout to stderr
- eio_chmod ("eio-test-dir", 0765, 0, res_cb, "chmod");
- eio_ftruncate (last_fd, 9, 0, res_cb, "ftruncate");
- eio_fdatasync (last_fd, 0, res_cb, "fdatasync");
- eio_fsync (last_fd, 0, res_cb, "fsync");
- eio_sync (0, res_cb, "sync");
- eio_busy (0.5, 0, res_cb, "busy");
- event_loop ();
- eio_sendfile (1, last_fd, 4, 5, 0, res_cb, "sendfile"); // write "test\n" to stdout
- eio_fstat (last_fd, 0, stat_cb, "stat");
- event_loop ();
- eio_truncate ("eio-test-dir/eio-test-file", 6, 0, res_cb, "truncate");
- eio_readahead (last_fd, 0, 64, 0, res_cb, "readahead");
- event_loop ();
- eio_close (last_fd, 0, res_cb, "close");
- eio_link ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-2", 0, res_cb, "link");
- event_loop ();
- eio_rename ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-renamed", 0, res_cb, "rename");
- event_loop ();
- eio_unlink ("eio-test-dir/eio-fifo", 0, res_cb, "unlink");
- eio_unlink ("eio-test-dir/eio-symlink", 0, res_cb, "unlink");
- eio_unlink ("eio-test-dir/eio-test-file-2", 0, res_cb, "unlink");
- eio_unlink ("eio-test-dir/eio-test-file-renamed", 0, res_cb, "unlink");
- event_loop ();
- eio_rmdir ("eio-test-dir", 0, res_cb, "rmdir");
- event_loop ();
- }
- while (0);
- return 0;
- }