*/
#include "rsync.h"
+/* if no timeout is specified then use a 60 second select timeout */
+#define SELECT_TIMEOUT 60
+
static int io_multiplexing_out;
static int io_multiplexing_in;
static int multiplex_in_fd;
t = time(NULL);
- if (last_io && io_timeout && (t-last_io)>io_timeout) {
- rprintf(FERROR,"read timeout after %d second - exiting\n",
+ if (last_io && io_timeout && (t-last_io) >= io_timeout) {
+ rprintf(FERROR,"io timeout after %d second - exiting\n",
(int)(t-last_io));
exit_cleanup(1);
}
static int read_buffer_len;
static int read_buffer_size;
static int no_flush;
+static int no_flush_read;
/* read from a socket with IO timeout. return the number of
bytes read. If no bytes can be read then exit, never return
{
int n, ret=0;
+ no_flush_read++;
io_flush();
+ no_flush_read--;
while (ret == 0) {
fd_set fds;
FD_ZERO(&fds);
FD_SET(fd, &fds);
- tv.tv_sec = io_timeout;
+ tv.tv_sec = io_timeout?io_timeout:SELECT_TIMEOUT;
tv.tv_usec = 0;
- if (select(fd+1, &fds, NULL, NULL,
- io_timeout?&tv:NULL) != 1) {
+ if (select(fd+1, &fds, NULL, NULL, &tv) != 1) {
check_timeout();
continue;
}
if (n == 0) {
if (eof_error) {
- rprintf(FERROR,"EOF in read_timeout\n");
+ rprintf(FERROR,"unexpected EOF in read_timeout\n");
}
exit_cleanup(1);
}
int ret;
int total=0;
- if (read_buffer_len < N && N < 1024) {
+ if ((read_buffer_len < N) && (N < 1024)) {
read_check(buffer_f_in);
}
continue;
}
+ no_flush_read++;
io_flush();
+ no_flush_read--;
ret = read_unbuffered(fd,buffer + total,N-total);
total += ret;
fd_set w_fds, r_fds;
int fd_count, count;
struct timeval tv;
- int reading;
+ int reading=0;
+ int blocked=0;
no_flush++;
- reading = (buffer_f_in != -1 && read_buffer_len < MAX_READ_BUFFER);
-
while (total < len) {
FD_ZERO(&w_fds);
FD_ZERO(&r_fds);
FD_SET(fd,&w_fds);
fd_count = fd+1;
+ if (!no_flush_read) {
+ reading = (buffer_f_in != -1);
+ }
+
if (reading) {
FD_SET(buffer_f_in,&r_fds);
if (buffer_f_in > fd)
fd_count = buffer_f_in+1;
}
- tv.tv_sec = io_timeout;
+ tv.tv_sec = io_timeout?io_timeout:SELECT_TIMEOUT;
tv.tv_usec = 0;
count = select(fd_count,
reading?&r_fds:NULL,
&w_fds,NULL,
- io_timeout?&tv:NULL);
+ &tv);
if (count <= 0) {
check_timeout();
continue;
}
+ if (reading && FD_ISSET(buffer_f_in, &r_fds)) {
+ read_check(buffer_f_in);
+ }
+
if (FD_ISSET(fd, &w_fds)) {
- int ret = write(fd,buf+total,len-total);
+ int n = (len-total)>>blocked;
+ int ret = write(fd,buf+total,n?n:1);
if (ret == -1 && errno == EINTR) {
continue;
if (ret == -1 &&
(errno == EAGAIN || errno == EWOULDBLOCK)) {
- /* this shouldn't happen, if it does then
- sleep for a short time to prevent us
- chewing too much CPU */
- u_sleep(100);
+ blocked++;
continue;
}
exit_cleanup(1);
}
+ blocked = 0;
total += ret;
stats.total_written += ret;
if (io_timeout)
last_io = time(NULL);
- continue;
- }
-
- if (reading && FD_ISSET(buffer_f_in, &r_fds)) {
- read_check(buffer_f_in);
}
}