static char *io_filesfrom_bp;
static char io_filesfrom_lastchar;
static int io_filesfrom_buflen;
-static size_t contiguous_write_len = 0;
+static int defer_forwarding_messages = 0;
static int select_timeout = SELECT_TIMEOUT;
static int active_filecnt = 0;
static OFF_T active_bytecnt = 0;
struct msg_list_item {
struct msg_list_item *next;
- char *buf;
int len;
+ char buf[1];
};
struct msg_list {
struct msg_list_item *head, *tail;
};
-static struct msg_list msg_list;
+static struct msg_list msg2genr, msg2sndr;
static void flist_ndx_push(struct flist_ndx_list *lp, int ndx)
{
}
/* Add a message to the pending MSG_* list. */
-static void msg_list_add(int code, char *buf, int len)
+static void msg_list_add(struct msg_list *lst, int code, char *buf, int len)
{
- struct msg_list_item *ml;
+ struct msg_list_item *m;
+ int sz = len + 4 + sizeof m[0] - 1;
- if (!(ml = new(struct msg_list_item)))
+ if (!(m = (struct msg_list_item *)new_array(char, sz)))
out_of_memory("msg_list_add");
- ml->next = NULL;
- if (!(ml->buf = new_array(char, len+4)))
- out_of_memory("msg_list_add");
- SIVAL(ml->buf, 0, ((code+MPLEX_BASE)<<24) | len);
- memcpy(ml->buf+4, buf, len);
- ml->len = len+4;
- if (msg_list.tail)
- msg_list.tail->next = ml;
+ m->next = NULL;
+ m->len = len + 4;
+ SIVAL(m->buf, 0, ((code+MPLEX_BASE)<<24) | len);
+ memcpy(m->buf + 4, buf, len);
+ if (lst->tail)
+ lst->tail->next = m;
else
- msg_list.head = ml;
- msg_list.tail = ml;
+ lst->head = m;
+ lst->tail = m;
}
/* Read a message from the MSG_* fd and handle it. This is called either
exit_cleanup(RERR_STREAMIO);
}
read_loop(fd, buf, len);
- io_multiplex_write(MSG_DELETED, buf, len);
+ if (defer_forwarding_messages)
+ msg_list_add(&msg2sndr, MSG_DELETED, buf, len);
+ else
+ io_multiplex_write(MSG_DELETED, buf, len);
break;
case MSG_SUCCESS:
if (len != 4 || !am_generator) {
read_loop(fd, buf, len);
if (remove_sent_files) {
decrement_active_files(IVAL(buf,0));
- io_multiplex_write(MSG_SUCCESS, buf, len);
+ if (defer_forwarding_messages)
+ msg_list_add(&msg2sndr, MSG_SUCCESS, buf, len);
+ else
+ io_multiplex_write(MSG_SUCCESS, buf, len);
}
if (preserve_hard_links)
flist_ndx_push(&hlink_list, IVAL(buf,0));
if (n >= sizeof buf)
n = sizeof buf - 1;
read_loop(fd, buf, n);
- rwrite((enum logcode)tag, buf, n);
+ if (am_generator && am_server && defer_forwarding_messages)
+ msg_list_add(&msg2sndr, tag, buf, n);
+ else
+ rwrite((enum logcode)tag, buf, n);
len -= n;
}
break;
/* Try to push messages off the list onto the wire. If we leave with more
* to do, return 0. On error, return -1. If everything flushed, return 1.
* This is only active in the receiver. */
-static int msg_list_flush(int flush_it_all)
+static int msg2genr_flush(int flush_it_all)
{
static int written = 0;
struct timeval tv;
if (msg_fd_out < 0)
return -1;
- while (msg_list.head) {
- struct msg_list_item *ml = msg_list.head;
- int n = write(msg_fd_out, ml->buf + written, ml->len - written);
+ while (msg2genr.head) {
+ struct msg_list_item *m = msg2genr.head;
+ int n = write(msg_fd_out, m->buf + written, m->len - written);
if (n < 0) {
if (errno == EINTR)
continue;
tv.tv_usec = 0;
if (!select(msg_fd_out+1, NULL, &fds, NULL, &tv))
check_timeout();
- } else if ((written += n) == ml->len) {
- free(ml->buf);
- msg_list.head = ml->next;
- if (!msg_list.head)
- msg_list.tail = NULL;
- free(ml);
+ } else if ((written += n) == m->len) {
+ msg2genr.head = m->next;
+ if (!msg2genr.head)
+ msg2genr.tail = NULL;
+ free(m);
written = 0;
}
}
io_multiplex_write(code, buf, len);
return;
}
- msg_list_add(code, buf, len);
- msg_list_flush(NORMAL_FLUSH);
+ msg_list_add(&msg2genr, code, buf, len);
+ msg2genr_flush(NORMAL_FLUSH);
}
int get_redo_num(int itemizing, enum logcode code)
FD_ZERO(&r_fds);
FD_ZERO(&w_fds);
FD_SET(fd, &r_fds);
- if (msg_list.head) {
+ if (msg2genr.head) {
FD_SET(msg_fd_out, &w_fds);
if (msg_fd_out > maxfd)
maxfd = msg_fd_out;
continue;
}
- if (msg_list.head && FD_ISSET(msg_fd_out, &w_fds))
- msg_list_flush(NORMAL_FLUSH);
+ if (msg2genr.head && FD_ISSET(msg_fd_out, &w_fds))
+ msg2genr_flush(NORMAL_FLUSH);
if (io_filesfrom_f_out >= 0) {
if (io_filesfrom_buflen) {
FD_SET(fd,&w_fds);
maxfd = fd;
- if (msg_fd_in >= 0 && len-total >= contiguous_write_len) {
+ if (msg_fd_in >= 0) {
FD_ZERO(&r_fds);
FD_SET(msg_fd_in,&r_fds);
if (msg_fd_in > maxfd)
if (!FD_ISSET(fd, &w_fds))
continue;
+ if (msg2sndr.head && !defer_forwarding_messages) {
+ struct msg_list_item *m = msg2sndr.head;
+ if (!(msg2sndr.head = m->next))
+ msg2sndr.tail = NULL;
+ defer_forwarding_messages = 1;
+ io_multiplex_write(IVAL(m->buf,0), m->buf+4, m->len-4);
+ defer_forwarding_messages = 0;
+ free(m);
+ continue;
+ }
+
n = len - total;
if (bwlimit_writemax && n > bwlimit_writemax)
n = bwlimit_writemax;
}
total += cnt;
+ defer_forwarding_messages = 1;
if (fd == sock_f_out) {
if (io_timeout || am_generator)
sleep_for_bwlimit(cnt);
}
}
+ defer_forwarding_messages = 0;
no_flush--;
}
SIVAL(buffer, 0, ((MPLEX_BASE + (int)code)<<24) + len);
- /* When the generator reads messages from the msg_fd_in pipe, it can
- * cause output to occur down the socket. Setting contiguous_write_len
- * prevents the reading of msg_fd_in once we actually start to write
- * this sequence of data (though we might read it before the start). */
- if (am_generator && msg_fd_in >= 0)
- contiguous_write_len = len + 4;
-
if (n > sizeof buffer - 4)
n = 0;
else
if (len)
writefd_unbuffered(sock_f_out, buf, len);
-
- if (am_generator && msg_fd_in >= 0)
- contiguous_write_len = 0;
}
void io_flush(int flush_it_all)
{
- msg_list_flush(flush_it_all);
+ msg2genr_flush(flush_it_all);
if (!iobuf_out_cnt || no_flush)
return;
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff