// example:
// stopwatch watch;
// watch.mark("one");
// sleep(1000);
// watch.mark("two");
// std::cout << watch.duration("one","two");
// sleep(1000);
// watch.mark("three");
// std::cout << watch.duration("one","three");
dura_type duration(const std::string& checkpoint_1,const std::string& checkpoint_2)const
{
time_point_vec::const_iterator tp1=find_by_label(checkpoint_1);
time_point_vec::const_iterator tp2=find_by_label(checkpoint_2);
return tp2->second - tp1->second;
}
int find_dp(struct part_iter **_iter)
{
struct part_iter *iter = NULL;
struct disk_info diskinfo;
struct guid gpt_guid;
uint64_t fs_lba;
int drive, hd, partition;
const union syslinux_derivative_info *sdi;
sdi = syslinux_derivative_info();
if (!strncmp(opt.drivename, "mbr", 3)) {
if (find_by_sig(strtoul(opt.drivename + 4, NULL, 0), &iter) < 0) {
error("Unable to find requested MBR signature.");
goto bail;
}
} else if (!strncmp(opt.drivename, "guid", 4)) {
if (str_to_guid(opt.drivename + 5, &gpt_guid))
goto bail;
if (find_by_guid(&gpt_guid, &iter) < 0) {
error("Unable to find requested GPT disk or partition by guid.");
goto bail;
}
} else if (!strncmp(opt.drivename, "label", 5)) {
if (!opt.drivename[6]) {
error("No label specified.");
goto bail;
}
if (find_by_label(opt.drivename + 6, &iter) < 0) {
error("Unable to find requested GPT partition by label.");
goto bail;
}
} else if ((opt.drivename[0] == 'h' || opt.drivename[0] == 'f') &&
opt.drivename[1] == 'd') {
hd = opt.drivename[0] == 'h' ? 0x80 : 0;
opt.drivename += 2;
drive = hd | strtol(opt.drivename, NULL, 0);
if (disk_get_params(drive, &diskinfo))
goto bail;
/* this will start iteration over FDD, possibly raw */
if (!(iter = pi_begin(&diskinfo, opt.piflags)))
goto bail;
} else if (!strcmp(opt.drivename, "boot") || !strcmp(opt.drivename, "fs")) {
if (!is_phys(sdi->c.filesystem)) {
error("When syslinux is not booted from physical disk (or its emulation),\n"
"'boot' and 'fs' are meaningless.");
goto bail;
}
/* offsets match, but in case it changes in the future */
if (sdi->c.filesystem == SYSLINUX_FS_ISOLINUX) {
drive = sdi->iso.drive_number;
fs_lba = *sdi->iso.partoffset;
} else {
drive = sdi->disk.drive_number;
fs_lba = *sdi->disk.partoffset;
}
if (disk_get_params(drive, &diskinfo))
goto bail;
/* this will start iteration over disk emulation, possibly raw */
if (!(iter = pi_begin(&diskinfo, opt.piflags)))
goto bail;
/* 'fs' => we should lookup the syslinux partition number and use it */
if (!strcmp(opt.drivename, "fs")) {
do {
if (iter->abs_lba == fs_lba)
break;
} while (!pi_next(iter));
/* broken part structure or other problems */
if (iter->status) {
error("Unable to find partition with syslinux (fs).");
goto bail;
}
}
} else {
error("Unparsable drive specification.");
goto bail;
}
/* main options done - only thing left is explicit partition specification,
* if we're still at the disk stage with the iterator AND user supplied
* partition number (including disk pseudo-partition).
*/
if (!iter->index && opt.partition) {
partition = strtol(opt.partition, NULL, 0);
/* search for matching part#, including disk */
do {
if (iter->index == partition)
break;
} while (!pi_next(iter));
if (iter->status) {
error("Unable to find requested disk / partition combination.");
goto bail;
}
}
if (!(iter->di.disk & 0x80) && iter->index) {
warn("Partitions on floppy devices may not work.");
}
*_iter = iter;
return 0;
bail:
pi_del(&iter);
return -1;
}
