int main() {
clogfile_t a, b;
if (!clogfile_open_by_id(&a, "/tmp", 0, false)) {
if (!clogfile_open_by_id(&a, "/tmp", 0, true)) {
return EXIT_FAILURE;
}
}
if (!clogfile_open_by_id(&b, "/tmp", 1, false)) {
if (!clogfile_open_by_id(&b, "/tmp", 1, true)) {
return EXIT_FAILURE;
}
}
uint64_t xid;
for (xid = 0; xid < 32; xid++) {
int status;
if (xid < 16) {
status = clogfile_get_status(&a, xid);
} else {
status = clogfile_get_status(&b, xid);
}
printf("before: %lu status %d\n", xid, status);
}
if (!clogfile_set_status(&a, 0, XSTATUS_INPROGRESS)) return EXIT_FAILURE;
if (!clogfile_set_status(&a, 1, XSTATUS_COMMITTED)) return EXIT_FAILURE;
if (!clogfile_set_status(&a, 2, XSTATUS_ABORTED)) return EXIT_FAILURE;
if (!clogfile_set_status(&b, 29, XSTATUS_INPROGRESS)) return EXIT_FAILURE;
if (!clogfile_set_status(&b, 30, XSTATUS_COMMITTED)) return EXIT_FAILURE;
if (!clogfile_set_status(&b, 31, XSTATUS_ABORTED)) return EXIT_FAILURE;
for (xid = 0; xid < 32; xid++) {
int status;
if (xid < 16) {
status = clogfile_get_status(&a, xid);
} else {
status = clogfile_get_status(&b, xid);
}
printf(" after: %lu status %d\n", xid, status);
}
if (!clogfile_close(&a)) return EXIT_FAILURE;
if (!clogfile_close(&b)) return EXIT_FAILURE;
return EXIT_SUCCESS;
}
// Get the status of the specified global commit.
int clog_read(clog_t clog, xid_t xid) {
clogfile_t *file = clog_xid_to_file(clog, xid);
if (file) {
int status = clogfile_get_status(file, xid);
return status;
} else {
shout(
"xid %016x status is out of range, "
"you might be experiencing a bug in backend\n",
xid
);
return BLANK;
}
}