libeio/demo.c

#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, res_cb)
        ->data = "mkdir";
      eio_nop (res_cb)
        ->data = "nop";
      event_loop ();

      eio_stat ("eio-test-dir", stat_cb);
      eio_lstat ("eio-test-dir", stat_cb);
      eio_open ("eio-test-dir/eio-test-file", O_RDWR | O_CREAT, 0777, open_cb);
      eio_symlink ("test", "eio-test-dir/eio-symlink", res_cb)
        ->data = "symlink";
      eio_mknod ("eio-test-dir/eio-fifo", S_IFIFO, 0, res_cb)
        ->data = "mknod";
      event_loop ();

      eio_utime ("eio-test-dir", 12345.678, 23456.789, res_cb)
        ->data = "utime";
      eio_futime (last_fd, 92345.678, 93456.789, res_cb)
        ->data = "futime";
      eio_chown ("eio-test-dir", getuid (), getgid (), res_cb)
        ->data = "chown";
      eio_fchown (last_fd, getuid (), getgid (), res_cb)
        ->data = "fchown";
      eio_fchmod (last_fd, 0123, res_cb)
        ->data = "fchmod";
      eio_readdir ("eio-test-dir", readdir_cb);
      eio_readdir ("/nonexistant", readdir_cb);
      eio_fstat (last_fd, stat_cb);
      eio_write (last_fd, "test\nfail\n", 10, 4, res_cb)
        ->data = "write";
      event_loop ();

      eio_read (last_fd, 0, 8, 0, read_cb);
      eio_readlink ("eio-test-dir/eio-symlink", res_cb)
        ->data = "readlink";
      event_loop ();

      eio_dup2 (1, 2, res_cb) // dup stdout to stderr
        ->data = "dup2";
      eio_chmod ("eio-test-dir", 0765, res_cb)
        ->data = "chmod";
      eio_ftruncate (last_fd, 9, res_cb)
        ->data = "ftruncate";
      eio_fdatasync (last_fd, res_cb)
        ->data = "fdatasync";
      eio_fsync (last_fd, res_cb)
        ->data = "fsync";
      eio_sync (res_cb)
        ->data = "sync";
      eio_busy (0.5, res_cb)
        ->data = "busy";
      event_loop ();

      eio_sendfile (1, last_fd, 4, 5, res_cb) // write "test\n" to stdout
        ->data = "sendfile";
      eio_fstat (last_fd, stat_cb);
      event_loop ();

      eio_truncate ("eio-test-dir/eio-test-file", 6, res_cb)
        ->data = "truncate";
      eio_readahead (last_fd, 0, 64, res_cb)
        ->data = "readahead";
      event_loop ();

      eio_close (last_fd, res_cb)
        ->data = "close";
      eio_link ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-2", res_cb)
        ->data = "link";
      event_loop ();

      eio_rename ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-renamed", res_cb)
        ->data = "rename";
      event_loop ();

      eio_unlink ("eio-test-dir/eio-fifo", res_cb)
        ->data = "unlink";
      eio_unlink ("eio-test-dir/eio-symlink", res_cb)
        ->data = "unlink";
      eio_unlink ("eio-test-dir/eio-test-file-2", res_cb)
        ->data = "unlink";
      eio_unlink ("eio-test-dir/eio-test-file-renamed", res_cb)
        ->data = "unlink";
      event_loop ();

      eio_rmdir ("eio-test-dir", res_cb)
        ->data = "rmdir";
      event_loop ();
    }
  while (0);

  return 0;
}

Revision:	1.1
Committed:	Mon May 12 00:31:43 2008 UTC (16 years ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-3_02
Log Message:	* empty log message *
#	Content
1	#include <stdio.h>
2	#include <stdlib.h>
3	#include <unistd.h>
4	#include <poll.h>
5	#include <string.h>
6	#include <assert.h>
7	#include <fcntl.h>
8	#include <sys/types.h>
9	#include <sys/stat.h>
10
11	#include "eio.h"
12
13	int respipe [2];
14
15	void
16	want_poll (void)
17	{
18	char dummy;
19	printf ("want_poll ()\n");
20	write (respipe [1], &dummy, 1);
21	}
22
23	void
24	done_poll (void)
25	{
26	char dummy;
27	printf ("done_poll ()\n");
28	read (respipe [0], &dummy, 1);
29	}
30
31	void
32	event_loop (void)
33	{
34	// an event loop. yeah.
35	struct pollfd pfd;
36	pfd.fd = respipe [0];
37	pfd.events = POLLIN;
38
39	printf ("\nentering event loop\n");
40	while (eio_nreqs ())
41	{
42	poll (&pfd, 1, -1);
43	printf ("eio_poll () = %d\n", eio_poll ());
44	}
45	printf ("leaving event loop\n");
46	}
47
48	int
49	res_cb (eio_req *req)
50	{
51	printf ("res_cb(%d\|%s) = %d\n", req->type, req->data ? req->data : "?", EIO_RESULT (req));
52
53	if (req->result < 0)
54	abort ();
55
56	return 0;
57	}
58
59	int
60	readdir_cb (eio_req *req)
61	{
62	char buf = (char )EIO_BUF (req);
63
64	printf ("readdir_cb = %d\n", EIO_RESULT (req));
65
66	if (EIO_RESULT (req) < 0)
67	return 0;
68
69	while (EIO_RESULT (req)--)
70	{
71	printf ("readdir = <%s>\n", buf);
72	buf += strlen (buf) + 1;
73	}
74
75	return 0;
76	}
77
78	int
79	stat_cb (eio_req *req)
80	{
81	struct stat *buf = EIO_STAT_BUF (req);
82
83	if (req->type == EIO_FSTAT)
84	printf ("fstat_cb = %d\n", EIO_RESULT (req));
85	else
86	printf ("stat_cb(%s) = %d\n", EIO_PATH (req), EIO_RESULT (req));
87
88	if (!EIO_RESULT (req))
89	printf ("stat size %d perm 0%o\n", buf->st_size, buf->st_mode & 0777);
90
91	return 0;
92	}
93
94	int
95	read_cb (eio_req *req)
96	{
97	unsigned char buf = (unsigned char )EIO_BUF (req);
98
99	printf ("read_cb = %d (%02x%02x%02x%02x %02x%02x%02x%02x)\n",
100	EIO_RESULT (req),
101	buf [0], buf [1], buf [2], buf [3],
102	buf [4], buf [5], buf [6], buf [7]);
103
104	return 0;
105	}
106
107	int last_fd;
108
109	int
110	open_cb (eio_req *req)
111	{
112	printf ("open_cb = %d\n", EIO_RESULT (req));
113
114	last_fd = EIO_RESULT (req);
115
116	return 0;
117	}
118
119	int
120	main (void)
121	{
122	printf ("pipe ()\n");
123	if (pipe (respipe)) abort ();
124
125	printf ("eio_init ()\n");
126	if (eio_init (want_poll, done_poll)) abort ();
127
128	do
129	{
130	/* avoid relative paths yourself(!) */
131	eio_mkdir ("eio-test-dir", 0777, res_cb)
132	->data = "mkdir";
133	eio_nop (res_cb)
134	->data = "nop";
135	event_loop ();
136
137	eio_stat ("eio-test-dir", stat_cb);
138	eio_lstat ("eio-test-dir", stat_cb);
139	eio_open ("eio-test-dir/eio-test-file", O_RDWR \| O_CREAT, 0777, open_cb);
140	eio_symlink ("test", "eio-test-dir/eio-symlink", res_cb)
141	->data = "symlink";
142	eio_mknod ("eio-test-dir/eio-fifo", S_IFIFO, 0, res_cb)
143	->data = "mknod";
144	event_loop ();
145
146	eio_utime ("eio-test-dir", 12345.678, 23456.789, res_cb)
147	->data = "utime";
148	eio_futime (last_fd, 92345.678, 93456.789, res_cb)
149	->data = "futime";
150	eio_chown ("eio-test-dir", getuid (), getgid (), res_cb)
151	->data = "chown";
152	eio_fchown (last_fd, getuid (), getgid (), res_cb)
153	->data = "fchown";
154	eio_fchmod (last_fd, 0123, res_cb)
155	->data = "fchmod";
156	eio_readdir ("eio-test-dir", readdir_cb);
157	eio_readdir ("/nonexistant", readdir_cb);
158	eio_fstat (last_fd, stat_cb);
159	eio_write (last_fd, "test\nfail\n", 10, 4, res_cb)
160	->data = "write";
161	event_loop ();
162
163	eio_read (last_fd, 0, 8, 0, read_cb);
164	eio_readlink ("eio-test-dir/eio-symlink", res_cb)
165	->data = "readlink";
166	event_loop ();
167
168	eio_dup2 (1, 2, res_cb) // dup stdout to stderr
169	->data = "dup2";
170	eio_chmod ("eio-test-dir", 0765, res_cb)
171	->data = "chmod";
172	eio_ftruncate (last_fd, 9, res_cb)
173	->data = "ftruncate";
174	eio_fdatasync (last_fd, res_cb)
175	->data = "fdatasync";
176	eio_fsync (last_fd, res_cb)
177	->data = "fsync";
178	eio_sync (res_cb)
179	->data = "sync";
180	eio_busy (0.5, res_cb)
181	->data = "busy";
182	event_loop ();
183
184	eio_sendfile (1, last_fd, 4, 5, res_cb) // write "test\n" to stdout
185	->data = "sendfile";
186	eio_fstat (last_fd, stat_cb);
187	event_loop ();
188
189	eio_truncate ("eio-test-dir/eio-test-file", 6, res_cb)
190	->data = "truncate";
191	eio_readahead (last_fd, 0, 64, res_cb)
192	->data = "readahead";
193	event_loop ();
194
195	eio_close (last_fd, res_cb)
196	->data = "close";
197	eio_link ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-2", res_cb)
198	->data = "link";
199	event_loop ();
200
201	eio_rename ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-renamed", res_cb)
202	->data = "rename";
203	event_loop ();
204
205	eio_unlink ("eio-test-dir/eio-fifo", res_cb)
206	->data = "unlink";
207	eio_unlink ("eio-test-dir/eio-symlink", res_cb)
208	->data = "unlink";
209	eio_unlink ("eio-test-dir/eio-test-file-2", res_cb)
210	->data = "unlink";
211	eio_unlink ("eio-test-dir/eio-test-file-renamed", res_cb)
212	->data = "unlink";
213	event_loop ();
214
215	eio_rmdir ("eio-test-dir", res_cb)
216	->data = "rmdir";
217	event_loop ();
218	}
219	while (0);
220
221	return 0;
222	}
223