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. Split file sending into send_from_file().

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. Optimize it with sendfile() on FreeBSD.
This commit is contained in:
Emil Mikulic 2003-11-22 12:56:46 +00:00
parent e127c6acda
commit 8f4a5e6b60
1 changed files with 44 additions and 21 deletions
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59
trunk/darkhttpd.c
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@ -1665,6 +1665,38 @@ static void poll_send_header(struct connection *conn)
/* ---------------------------------------------------------------------------
* Send chunk on socket <s> from FILE *fp, starting at <ofs> and of size
* <size>. Use sendfile() is possible since it's zero-copy on some platforms.
* Returns the number of bytes sent, 0 on closure, -1 if send() failed, -2 if
* read error.
*/
static ssize_t send_from_file(int s, FILE *fp, long ofs, size_t size)
{
#ifdef __FreeBSD__
off_t sent;
if (sendfile(fileno(fp), s, (off_t)ofs, size, NULL, &sent, 0) == -1)
{
if (errno == EAGAIN)
return sent;
else
return -1;
}
else return size;
#else
#define BUFSIZE 20000
char buf[BUFSIZE];
size_t amount = min((size_t)BUFSIZE, size);
#undef BUFSIZE
if (fseek(fp, ofs, SEEK_SET) == -1) err(1, "fseek(%ld)", ofs);
if (fread(buf, amount, 1, fp) != 1) return -2;
return send(s, buf, amount, 0);
#endif
}
/* ---------------------------------------------------------------------------
* Sending reply.
*/
@ -1684,33 +1716,24 @@ static void poll_send_reply(struct connection *conn)
}
else
{
/* from file! */
#define BUFSIZE 40000
char buf[BUFSIZE];
size_t amount = min((size_t)BUFSIZE,
sent = send_from_file(conn->socket, conn->reply_file,
(long)(conn->reply_start + conn->reply_sent),
conn->reply_length - conn->reply_sent);
#undef BUFSIZE
if (fseek(conn->reply_file,
(long)(conn->reply_start + conn->reply_sent), SEEK_SET) == -1)
err(1, "fseek(%d)", conn->reply_start + conn->reply_sent);
if (fread(buf, amount, 1, conn->reply_file) != 1)
if (sent == -2)
{
if (feof(conn->reply_file))
{
conn->conn_close = 1;
conn->state = DONE;
fprintf(stderr, "(%d) premature end of file\n",
conn->socket);
else
fprintf(stderr, "fread() error: %s\n",
strerror( ferror(conn->reply_file) )); /* <- FIXME? */
conn->conn_close = 1;
conn->state = DONE;
return;
}
fprintf(stderr, "error: %s\n",
strerror( ferror(conn->reply_file) ));
errx(1, "fread()");
}
sent = send(conn->socket, buf, amount, 0);
}
conn->last_active = time(NULL);
debugf("poll_send_reply(%d) sent %d: %d+[%d-%d] of %d\n",