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rand: tag with @[direct_array_access] some frequently used functions, that are already debugged (#22523)

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Delyan Angelov 2024-10-15 10:38:35 +03:00 • committed by GitHub
parent 4c55de5e65
commit 49513afd51
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1 changed files with 6 additions and 1 deletions
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7
vlib/rand/rand.c.v
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@ -1,6 +1,6 @@
module rand module rand
const clock_seq_hi_and_reserved_valid_values = [`8`, `9`, `a`, `b`] const clock_seq_hi_and_reserved_valid_values = [`8`, `9`, `a`, `b`]!
// uuid_v4 generates a random (v4) UUID // uuid_v4 generates a random (v4) UUID
// See https://en.wikipedia.org/wiki/Universally_unique_identifier#Version_4_(random) // See https://en.wikipedia.org/wiki/Universally_unique_identifier#Version_4_(random)
@ -8,6 +8,7 @@ pub fn uuid_v4() string {
return internal_uuid_v4(mut default_rng) return internal_uuid_v4(mut default_rng)
} }
@[direct_array_access]
fn internal_uuid_v4(mut rng PRNG) string { fn internal_uuid_v4(mut rng PRNG) string {
buflen := 36 buflen := 36
mut buf := unsafe { malloc_noscan(37) } mut buf := unsafe { malloc_noscan(37) }
@ -56,6 +57,7 @@ fn internal_uuid_v4(mut rng PRNG) string {
const ulid_encoding = '0123456789ABCDEFGHJKMNPQRSTVWXYZ' const ulid_encoding = '0123456789ABCDEFGHJKMNPQRSTVWXYZ'
@[direct_array_access]
fn internal_ulid_at_millisecond(mut rng PRNG, unix_time_milli u64) string { fn internal_ulid_at_millisecond(mut rng PRNG, unix_time_milli u64) string {
buflen := 26 buflen := 26
mut buf := unsafe { malloc_noscan(27) } mut buf := unsafe { malloc_noscan(27) }
@ -136,6 +138,7 @@ fn init() {
at_exit(deinit) or {} at_exit(deinit) or {}
} }
@[direct_array_access]
fn read_32(mut rng PRNG, mut buf []u8) { fn read_32(mut rng PRNG, mut buf []u8) {
p32 := unsafe { &u32(buf.data) } p32 := unsafe { &u32(buf.data) }
u32s := buf.len / 4 u32s := buf.len / 4
@ -149,6 +152,7 @@ fn read_32(mut rng PRNG, mut buf []u8) {
} }
} }
@[direct_array_access]
fn read_64(mut rng PRNG, mut buf []u8) { fn read_64(mut rng PRNG, mut buf []u8) {
p64 := unsafe { &u64(buf.data) } p64 := unsafe { &u64(buf.data) }
u64s := buf.len / 8 u64s := buf.len / 8
@ -162,6 +166,7 @@ fn read_64(mut rng PRNG, mut buf []u8) {
} }
} }
@[direct_array_access]
fn read_internal(mut rng PRNG, mut buf []u8) { fn read_internal(mut rng PRNG, mut buf []u8) {
match rng.block_size() { match rng.block_size() {
32 { 32 {