cvsroot/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 (18 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-3_02
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#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