#include "cache.h"
#include "exec_cmd.h"
+#include "pkt-line.h"
#include <sys/wait.h>
+#include <sys/time.h>
static int finish_pack(const char *pack_tmp_name, const char *me)
{
pid = fork();
if (pid < 0)
- die("git-clone-pack: unable to fork off git-index-pack");
+ die("%s: unable to fork off git-index-pack", me);
if (!pid) {
close(0);
dup2(pipe_fd[1], 1);
exit(1);
}
-int receive_unpack_pack(int fd[2], const char *me, int quiet)
+static pid_t setup_sideband(int sideband, const char *me, int fd[2], int xd[2])
+{
+ pid_t side_pid;
+
+ if (!sideband) {
+ fd[0] = xd[0];
+ fd[1] = xd[1];
+ return 0;
+ }
+ /* xd[] is talking with upload-pack; subprocess reads from
+ * xd[0], spits out band#2 to stderr, and feeds us band#1
+ * through our fd[0].
+ */
+ if (pipe(fd) < 0)
+ die("%s: unable to set up pipe", me);
+ side_pid = fork();
+ if (side_pid < 0)
+ die("%s: unable to fork off sideband demultiplexer", me);
+ if (!side_pid) {
+ /* subprocess */
+ close(fd[0]);
+ if (xd[0] != xd[1])
+ close(xd[1]);
+ while (1) {
+ char buf[1024];
+ int len = packet_read_line(xd[0], buf, sizeof(buf));
+ if (len == 0)
+ break;
+ if (len < 1)
+ die("%s: protocol error: no band designator",
+ me);
+ len--;
+ switch (buf[0] & 0xFF) {
+ case 3:
+ safe_write(2, buf+1, len);
+ fprintf(stderr, "\n");
+ exit(1);
+ case 2:
+ safe_write(2, buf+1, len);
+ continue;
+ case 1:
+ safe_write(fd[1], buf+1, len);
+ continue;
+ default:
+ die("%s: protocol error: bad band #%d",
+ me, (buf[0] & 0xFF));
+ }
+ }
+ exit(0);
+ }
+ close(xd[0]);
+ close(fd[1]);
+ fd[1] = xd[1];
+ return side_pid;
+}
+
+int receive_unpack_pack(int xd[2], const char *me, int quiet, int sideband)
{
int status;
- pid_t pid;
+ pid_t pid, side_pid;
+ int fd[2];
+ side_pid = setup_sideband(sideband, me, fd, xd);
pid = fork();
if (pid < 0)
die("%s: unable to fork off git-unpack-objects", me);
die("git-unpack-objects died of unnatural causes %d", status);
}
-int receive_keep_pack(int fd[2], const char *me)
+/*
+ * We average out the download speed over this many "events", where
+ * an event is a minimum of about half a second. That way, we get
+ * a reasonably stable number.
+ */
+#define NR_AVERAGE (4)
+
+/*
+ * A "binary msec" is a power-of-two-msec, aka 1/1024th of a second.
+ * Keeing the time in that format means that "bytes / msecs" means
+ * is the same as kB/s (modulo rounding).
+ *
+ * 1000512 is a magic number (usecs in a second, rounded up by half
+ * of 1024, to make "rounding" come out right ;)
+ */
+#define usec_to_binarymsec(x) ((int)(x) / (1000512 >> 10))
+
+int receive_keep_pack(int xd[2], const char *me, int quiet, int sideband)
{
char tmpfile[PATH_MAX];
- int ofd, ifd;
+ int ofd, ifd, fd[2];
+ unsigned long total;
+ static struct timeval prev_tv;
+ struct average {
+ unsigned long bytes;
+ unsigned long time;
+ } download[NR_AVERAGE] = { {0, 0}, };
+ unsigned long avg_bytes, avg_time;
+ int idx = 0;
+
+ setup_sideband(sideband, me, fd, xd);
ifd = fd[0];
snprintf(tmpfile, sizeof(tmpfile),
if (ofd < 0)
return error("unable to create temporary file %s", tmpfile);
+ gettimeofday(&prev_tv, NULL);
+ total = 0;
+ avg_bytes = 0;
+ avg_time = 0;
while (1) {
char buf[8192];
ssize_t sz, wsz, pos;
if (sz == 0)
break;
if (sz < 0) {
- error("error reading pack (%s)", strerror(errno));
- close(ofd);
- unlink(tmpfile);
- return -1;
+ if (errno != EINTR && errno != EAGAIN) {
+ error("error reading pack (%s)", strerror(errno));
+ close(ofd);
+ unlink(tmpfile);
+ return -1;
+ }
+ sz = 0;
}
pos = 0;
while (pos < sz) {
}
pos += wsz;
}
+ total += sz;
+ if (!quiet) {
+ static unsigned long last;
+ struct timeval tv;
+ unsigned long diff = total - last;
+ /* not really "msecs", but a power-of-two millisec (1/1024th of a sec) */
+ unsigned long msecs;
+
+ gettimeofday(&tv, NULL);
+ msecs = tv.tv_sec - prev_tv.tv_sec;
+ msecs <<= 10;
+ msecs += usec_to_binarymsec(tv.tv_usec - prev_tv.tv_usec);
+
+ if (msecs > 500) {
+ prev_tv = tv;
+ last = total;
+
+ /* Update averages ..*/
+ avg_bytes += diff;
+ avg_time += msecs;
+ avg_bytes -= download[idx].bytes;
+ avg_time -= download[idx].time;
+ download[idx].bytes = diff;
+ download[idx].time = msecs;
+ idx++;
+ if (idx >= NR_AVERAGE)
+ idx = 0;
+
+ fprintf(stderr, "%4lu.%03luMB (%lu kB/s) \r",
+ total >> 20,
+ 1000*((total >> 10) & 1023)>>10,
+ avg_bytes / avg_time );
+ }
+ }
}
close(ofd);
return finish_pack(tmpfile, me);