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pretty: common implementations 

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
This commit is contained in:
Rob Norris 2024-02-29 13:43:00 +11:00 committed by Rob Norris
parent db1e59a63d
commit 42a69191b6
1 changed files with 92 additions and 116 deletions
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208
module/zcommon/zfs_pretty.c
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@ -35,6 +35,80 @@ typedef struct {
const char *pb_name;
} pretty_bit_t;
static size_t
zfs_pretty_bits(const pretty_bit_t *table, const size_t nelems,
uint64_t bits, char *out, size_t outlen)
{
ASSERT(out);
size_t n = 0;
for (int b = nelems; b >= 0; b--) {
if (n == outlen)
break;
uint64_t mask = (1ULL << b);
out[n++] =
(bits & mask) ? table[b].pb_bit : ' ';
}
if (n < outlen)
out[n++] = '\0';
return (n);
}
static size_t
zfs_pretty_pairs(const pretty_bit_t *table, const size_t nelems,
uint64_t bits, char *out, size_t outlen)
{
ASSERT(out);
size_t n = 0;
for (int b = nelems; b >= 0; b--) {
ASSERT3U(n, <=, outlen);
if (n == outlen)
break;
uint64_t mask = (1ULL << b);
if (bits & mask) {
size_t len = (n > 0) ? 3 : 2;
if (n > outlen-len)
break;
if (n > 0)
out[n++] = '|';
out[n++] = table[b].pb_pair[0];
out[n++] = table[b].pb_pair[1];
}
}
if (n < outlen)
out[n++] = '\0';
return (n);
}
static size_t
zfs_pretty_str(const pretty_bit_t *table, const size_t nelems,
uint64_t bits, char *out, size_t outlen)
{
ASSERT(out);
size_t n = 0;
for (int b = 0; b < nelems; b++) {
ASSERT3U(n, <=, outlen);
if (n == outlen)
break;
uint64_t mask = (1ULL << b);
if (bits & mask) {
size_t len = strlen(table[b].pb_name);
if (n > 0)
len++;
if (n > outlen-len)
break;
if (n > 0) {
out[n++] = ' ';
len--;
}
memcpy(&out[n], table[b].pb_name, len);
n += len;
}
}
if (n < outlen)
out[n++] = '\0';
return (n);
}
static const pretty_bit_t pretty_zio_flag_table[] = {
{ '.', "DA", "DONT_AGGREGATE" },
{ '.', "RP", "IO_REPAIR" },
@ -67,78 +141,29 @@ static const pretty_bit_t pretty_zio_flag_table[] = {
{ '.', "EX", "REEXECUTED" },
{ '.', "DG", "DELEGATED" },
};
static const size_t pretty_zio_flag_table_elems =
sizeof (pretty_zio_flag_table) / sizeof (pretty_bit_t);
size_t
zfs_pretty_zio_flag_bits(uint64_t bits, char *out, size_t outlen)
{
ASSERT(out);
size_t n = 0;
for (int b = pretty_zio_flag_table_elems; b >= 0; b--) {
if (n == outlen)
break;
uint64_t mask = (1ULL << b);
out[n++] =
(bits & mask) ? pretty_zio_flag_table[b].pb_bit : ' ';
}
if (n < outlen)
out[n++] = '\0';
return (n);
return (zfs_pretty_bits(pretty_zio_flag_table,
sizeof (pretty_zio_flag_table) / sizeof (pretty_bit_t),
bits, out, outlen));
}
size_t
zfs_pretty_zio_flag_pairs(uint64_t bits, char *out, size_t outlen)
{
ASSERT(out);
size_t n = 0;
for (int b = pretty_zio_flag_table_elems; b >= 0; b--) {
ASSERT3U(n, <=, outlen);
if (n == outlen)
break;
uint64_t mask = (1ULL << b);
if (bits & mask) {
size_t len = (n > 0) ? 3 : 2;
if (n > outlen-len)
break;
if (n > 0)
out[n++] = '|';
out[n++] = pretty_zio_flag_table[b].pb_pair[0];
out[n++] = pretty_zio_flag_table[b].pb_pair[1];
}
}
if (n < outlen)
out[n++] = '\0';
return (n);
return (zfs_pretty_pairs(pretty_zio_flag_table,
sizeof (pretty_zio_flag_table) / sizeof (pretty_bit_t),
bits, out, outlen));
}
size_t
zfs_pretty_zio_flag_str(uint64_t bits, char *out, size_t outlen)
{
ASSERT(out);
size_t n = 0;
for (int b = pretty_zio_flag_table_elems; b >= 0; b--) {
ASSERT3U(n, <=, outlen);
if (n == outlen)
break;
uint64_t mask = (1ULL << b);
if (bits & mask) {
size_t len = strlen(pretty_zio_flag_table[b].pb_name);
if (n > 0)
len++;
if (n > outlen-len)
break;
if (n > 0) {
out[n++] = ' ';
len--;
}
memcpy(&out[n], pretty_zio_flag_table[b].pb_name, len);
n += len;
}
}
if (n < outlen)
out[n++] = '\0';
return (n);
return (zfs_pretty_str(pretty_zio_flag_table,
sizeof (pretty_zio_flag_table) / sizeof (pretty_bit_t),
bits, out, outlen));
}
static const pretty_bit_t pretty_abd_flag_table[] = {
@ -153,76 +178,27 @@ static const pretty_bit_t pretty_abd_flag_table[] = {
{ 'Z', "ZR", "ZEROS" },
{ 'A', "AL", "ALLOCD" },
};
static const size_t pretty_abd_flag_table_elems =
sizeof (pretty_abd_flag_table) / sizeof (pretty_bit_t);
size_t
zfs_pretty_abd_flag_bits(uint64_t bits, char *out, size_t outlen)
{
ASSERT(out);
size_t n = 0;
for (int b = pretty_abd_flag_table_elems; b >= 0; b--) {
if (n == outlen)
break;
uint64_t mask = (1ULL << b);
out[n++] =
(bits & mask) ? pretty_abd_flag_table[b].pb_bit : ' ';
}
if (n < outlen)
out[n++] = '\0';
return (n);
return (zfs_pretty_bits(pretty_abd_flag_table,
sizeof (pretty_abd_flag_table) / sizeof (pretty_bit_t),
bits, out, outlen));
}
size_t
zfs_pretty_abd_flag_pairs(uint64_t bits, char *out, size_t outlen)
{
ASSERT(out);
size_t n = 0;
for (int b = pretty_abd_flag_table_elems; b >= 0; b--) {
ASSERT3U(n, <=, outlen);
if (n == outlen)
break;
uint64_t mask = (1ULL << b);
if (bits & mask) {
size_t len = (n > 0) ? 3 : 2;
if (n > outlen-len)
break;
if (n > 0)
out[n++] = '|';
out[n++] = pretty_abd_flag_table[b].pb_pair[0];
out[n++] = pretty_abd_flag_table[b].pb_pair[1];
}
}
if (n < outlen)
out[n++] = '\0';
return (n);
return (zfs_pretty_pairs(pretty_abd_flag_table,
sizeof (pretty_abd_flag_table) / sizeof (pretty_bit_t),
bits, out, outlen));
}
size_t
zfs_pretty_abd_flag_str(uint64_t bits, char *out, size_t outlen)
{
ASSERT(out);
size_t n = 0;
for (int b = 0; b <= pretty_abd_flag_table_elems; b++) {
ASSERT3U(n, <=, outlen);
if (n == outlen)
break;
uint64_t mask = (1ULL << b);
if (bits & mask) {
size_t len = strlen(pretty_abd_flag_table[b].pb_name);
if (n > 0)
len++;
if (n > outlen-len)
break;
if (n > 0) {
out[n++] = ' ';
len--;
}
memcpy(&out[n], pretty_abd_flag_table[b].pb_name, len);
n += len;
}
}
if (n < outlen)
out[n++] = '\0';
return (n);
return (zfs_pretty_str(pretty_abd_flag_table,
sizeof (pretty_abd_flag_table) / sizeof (pretty_bit_t),
bits, out, outlen));
}