void log_display_headstart()
{
int64_t mid = NUM_HEADSTARTS/2;
put_string("\nHeadstarts:\n");
for (int i = 0; i < NUM_HEADSTARTS; i++) {
put_int64(i-mid);
put_string(": ");
put_uint64(global_log.headstarts[i]);
put_string("\n");
}
}
static void sendfile_drv_ready_output(ErlDrvData handle, ErlDrvEvent ev)
{
Desc* d = (Desc*)handle;
ssize_t result;
off_t cur_offset;
Transfer* xfer;
SocketFd* sfd = (SocketFd*)&ev;
xfer = (Transfer*)hashtable_search(d->xfer_table, sfd->hashkey);
if (xfer == NULL) {
/* fatal error, something is very wrong */
driver_failure_atom(d->port, "socket_fd_not_found");
return;
}
cur_offset = xfer->offset;
result = sendfile_call(sfd->socket_fd, xfer->file_fd,
&xfer->offset, xfer->count);
if (result < 0 && (errno == EAGAIN || errno == EWOULDBLOCK ||
errno == EINPROGRESS || errno == EALREADY)) {
if (xfer->offset != cur_offset) {
off_t written = xfer->offset - cur_offset;
xfer->count -= written;
xfer->total += written;
}
} else {
int save_errno = errno;
ErlDrvSizeT out_buflen;
char buf[36];
Buffer b;
b.buffer = buf;
memset(buf, 0, sizeof buf);
#ifdef ERL_DRV_WRITE
driver_select(d->port, ev, ERL_DRV_WRITE, 0);
#else
driver_select(d->port, ev, DO_WRITE, 0);
#endif
close(xfer->file_fd);
if (result < 0) {
out_buflen = set_error_buffer(&b, sfd->socket_fd, save_errno);
} else {
uint64_t total = xfer->total + result;
put_int64(total, &(b.result->count.count));
put_int32(sfd->socket_fd, &(b.result->out_fd));
b.result->success = 1;
b.result->errno_string[0] = '\0';
out_buflen = sizeof(*b.result);
}
xfer->file_fd = -1;
xfer->offset = xfer->count = xfer->total = 0;
driver_output(d->port, buf, out_buflen);
}
}