#include "cache.h"
#include "exec_cmd.h"
+#include "pkt-line.h"
+#include "sideband.h"
#include <sys/wait.h>
#include <sys/time.h>
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);
for (;;) {
int status, code;
- int retval = waitpid(pid, &status, 0);
- if (retval < 0) {
+ if (waitpid(pid, &status, 0) < 0) {
if (errno == EINTR)
continue;
error("waitpid failed (%s)", strerror(errno));
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]);
+ if (recv_sideband(me, xd[0], fd[1], 2))
+ exit(1);
+ 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, int quiet)
+/*
+ * 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.
+ * Keeping the time in that format means that "bytes / msecs" means
+ * 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),
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) {
gettimeofday(&tv, NULL);
msecs = tv.tv_sec - prev_tv.tv_sec;
msecs <<= 10;
- msecs += (int)(tv.tv_usec - prev_tv.tv_usec) >> 10;
+ msecs += usec_to_binarymsec(tv.tv_usec - prev_tv.tv_usec);
+
if (msecs > 500) {
prev_tv = tv;
last = total;
- fprintf(stderr, "%4lu.%03luMB (%lu kB/s) \r",
+
+ /* 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,
- diff / msecs );
+ avg_bytes / avg_time );
}
}
}