static void
pool_create(const wchar_t *path, size_t poolsize, unsigned mode)
{
char *upath = ut_toUTF8(path);
PMEMlogpool *plp = pmemlog_createW(path, poolsize, mode);
if (plp == NULL)
UT_OUT("!%s: pmemlog_create", upath);
else {
os_stat_t stbuf;
STATW(path, &stbuf);
UT_OUT("%s: file size %zu usable space %zu mode 0%o",
upath, stbuf.st_size,
pmemlog_nbyte(plp),
stbuf.st_mode & 0777);
pmemlog_close(plp);
int result = pmemlog_checkW(path);
if (result < 0)
UT_OUT("!%s: pmemlog_check", upath);
else if (result == 0)
UT_OUT("%s: pmemlog_check: not consistent", upath);
}
free(upath);
}
int
main(int argc, char *argv[])
{
const char path[] = "/pmem-fs/myfile";
PMEMlogpool *plp;
size_t nbyte;
char *str;
/* create the pmemlog pool or open it if it already exists */
plp = pmemlog_create(path, POOL_SIZE, 0666);
if (plp == NULL)
plp = pmemlog_open(path);
if (plp == NULL) {
perror(path);
exit(1);
}
/* how many bytes does the log hold? */
nbyte = pmemlog_nbyte(plp);
printf("log holds %zu bytes\n", nbyte);
/* append to the log... */
str = "This is the first string appended\n";
if (pmemlog_append(plp, str, strlen(str)) < 0) {
perror("pmemlog_append");
exit(1);
}
str = "This is the second string appended\n";
if (pmemlog_append(plp, str, strlen(str)) < 0) {
perror("pmemlog_append");
exit(1);
}
/* print the log contents */
printf("log contains:\n");
pmemlog_walk(plp, 0, printit, NULL);
pmemlog_close(plp);
}
/*
* do_nbyte -- call pmemlog_nbyte() & print result
*/
static void
do_nbyte(PMEMlogpool *plp)
{
size_t nbyte = pmemlog_nbyte(plp);
OUT("usable size: %zu", nbyte);
}
int
main(int argc, char *argv[])
{
if (argc < 2) {
fprintf(stderr, "usage: %s [o,c] file [val...]", argv[0]);
return 1;
}
PMEMlogpool *plp;
if (strncmp(argv[1], "c", 1) == 0) {
plp = pmemlog_create(argv[2], POOL_SIZE, S_IRUSR | S_IWUSR);
} else if (strncmp(argv[1], "o", 1) == 0) {
plp = pmemlog_open(argv[2]);
} else {
fprintf(stderr, "usage: %s [o,c] file [val...]", argv[0]);
return 1;
}
if (plp == NULL) {
perror("pmemlog_create/pmemlog_open");
return 1;
}
/* process the command line arguments */
for (int i = 3; i < argc; i++) {
switch (*argv[i]) {
case 'a': {
printf("append: %s\n", argv[i] + 2);
pmemlog_append(plp, argv[i] + 2,
strlen(argv[i] + 2));
break;
}
case 'v': {
printf("appendv: %s\n", argv[i] + 2);
int count = count_iovec(argv[i] + 2);
struct iovec *iov = malloc(count
* sizeof (struct iovec));
fill_iovec(iov, argv[i] + 2);
pmemlog_appendv(plp, iov, count);
free(iov);
break;
}
case 'r': {
printf("rewind\n");
pmemlog_rewind(plp);
break;
}
case 'w': {
printf("walk\n");
pmemlog_walk(plp, 0, process_chunk, NULL);
break;
}
case 'n': {
printf("nbytes: %zu\n", pmemlog_nbyte(plp));
break;
}
case 't': {
printf("offset: %ld\n", pmemlog_tell(plp));
break;
}
default: {
fprintf(stderr, "unrecognized command %s\n",
argv[i]);
break;
}
};
}
/* all done */
pmemlog_close(plp);
return 0;
}