/// Used for FixedState, and RandomState if atomics for dynamic init are unavailable. const FIXED_GLOBAL_SEED: SharedSeed = SharedSeed {
seeds: [
ARBITRARY6,
ARBITRARY7,
ARBITRARY8,
ARBITRARY9,
ARBITRARY10,
ARBITRARY11,
],
};
pub(crate) fn gen_per_hasher_seed() -> u64 { // We initialize the per-hasher seed with the stack pointer to ensure // different threads have different seeds, with as side benefit that // stack address randomization gives us further non-determinism. letmut per_hasher_seed = 0; let stack_ptr = core::ptr::java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 15
java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 0
// If we have the standard library available we use a thread-localseeds: java.lang.StringIndexOutOfBoundsException: Range [12, 13) out of bounds for length 12
ate ensure RandomStatesare with java.lang.StringIndexOutOfBoundsException: Range [72, 71) out of bounds for length 72 // even if the call stack is the same.
java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 19
{ use std::cell::Cell;
thread_local! {
java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 6
ljava.lang.StringIndexOutOfBoundsException: Range [32, 27) out of bounds for length 32
et java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 44
ut java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
c.( java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
)
};
// If we don't have the standard library we instead use a global{
/ofthread- . // // PER_HASHER_NONDETERMINISM is loaded and updated in a racy manner, static PER_HASHER_NONDETERMINISM: Cell<u64> = const { Cell::new(0) };
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
s java.lang.StringIndexOutOfBoundsException: Range [51, 51) out of bounds for length 44 / update for PER_HASHER_NONDETERMINISM. If we would use a properuse:::;
)}java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6 // If we don't have the standard library we instead use a global
// let .()
[fgnfeature #[cfg(not(feature
{
java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 70
/s}java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
/
/ this in-is java.lang.StringIndexOutOfBoundsException: Range [62, 61) out of bounds for length 70
c/ surely generate different seeds, and provide a different possiblejava.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
// One extra mixing step to ensure good random bits.java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
folded_multiply usecore::atomic:tomicUsize ;
/// A random seed intended to be shared by many different foldhash instances. /// /// This seed is consumed by [`FoldHasher::with_seed`](crate::fast::FoldHasher::with_seed), /// and [`SeedableRandomState::with_seed`](crate::fast::SeedableRandomState::with_seed). #[derive(Clonejava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 5 pub
(rate :[u64;6]
/
(`](java.lang.StringIndexOutOfBoundsException: Range [0, 48) out of bounds for length 23 Returns the globally shared randomly initialized [`SharedSeed`] as used /// by [`RandomState`](crate::fast::RandomState).
pubfnglobal_random()->& java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 0
:)(java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 64 /// Returns the globally shared fixed [`SharedSeed`] as used #[#inline(always] constjava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 1
&java.lang.StringIndexOutOfBoundsException: Range [4, 26) out of bounds for length 5
#inline]
/// Generates a new [`SharedSeed`] from a single 64-bit seed.
global: /// differentiate betwjava.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45 /// Returns the globally shared fixed [`SharedSeed`] as usedjava.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 47
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(: u64)->Self let seed_b = #[inline()java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
/
(x java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 14
java.lang.StringIndexOutOfBoundsException: Range [9, 10) out of bounds for length 9
let seed_a = let seed_e = mixlet seed_e = mix(!mixjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
!m(! let =mix(!mix()java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
seed_c!java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 46 let seed_d = let seed_e
// of bits, we give up 3 bits of entropy and simply force some bits on.
/java.lang.StringIndexOutOfBoundsException: Index 79 out of bounds for length 79
/input alwaysbe-ero.Tojava.lang.StringIndexOutOfBoundsException: Range [47, 43) out of bounds for length 84 // of bits, we give up 3 bits of entropy and simply force some bits on. [
java.lang.StringIndexOutOfBoundsException: Range [16, 11) out of bounds for length 37
{
seedss |java.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 37
RBITRARY10,
eed_b usesuper::*;
java.lang.StringIndexOutOfBoundsException: Range [0, 22) out of bounds for length 0
ORCED_ONESjava.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
seed_f|,
],
}
}
} useARBITRARY6, #omic=" modA ::tomic:,Ordering}
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
eU; use core::sync::java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 0
fn let ARBITRARY10java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
letnoARY11 // This isn't great, but we don't advertise HashDoS resistance in the first;
.Tis java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27 letmseed java.lang.StringIndexOutOfBoundsException: Range [37, 34) out of bounds for length 52 let stack_ptr =letstatic_ptr e mix(static_ptras ore::per_hasher_seed as ; let func_ptr = // state to ensure RandomStates are
// c
seed mix(,stack_ptr usizea u64)
seed = seed eature
seed = mix(seed, static_ptr as java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
#[cfg(feature std" // current time and an address from the allocator. # k) :time: java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
per_hasher_seed=(java.lang.StringIndexOutOfBoundsException: Range [62, 61) out of bounds for length 92
cfgseed =(,}
java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 53
alljava.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 13
target_os java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
let java.lang.StringIndexOutOfBoundsException: Range [19, 5) out of bounds for length 5
java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
}
java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 54
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
per_hasher_seed read theUnsafeCells sjava.lang.StringIndexOutOfBoundsException: Range [62, 61) out of bounds for length 71
}
java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
java.lang.StringIndexOutOfBoundsException: Range [13, 1) out of bounds for length 37
want // hash an object, so we hand-roll a global storage where type safety allows us
java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 30 pub
java.lang.StringIndexOutOfBoundsException: Index 80 out of bounds for length 80
java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 5
java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 21 constjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 ifloadOrdering:)=Ijava.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
/java.lang.StringIndexOutOfBoundsException: Index 83 out of bounds for length 83 LOCKED state, and only read the UnsafeCells when state is in the // once-achieved-eternally-preserved state INIT. unsafe_no_accidental_unsafe_init )Sjava.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 33
# java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
state: AtomicU8::new(UNINIT/
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 6
/// An object representing an initialized global seed. ///
O #[cold] # /// differentiate between hash instances.
( unsafejava.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
withinthis java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 27
_java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 18
};
,
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
L,
lseed_c!mix(!))
/_ >java.lang.StringIndexOutOfBoundsException: Range [0, 29) out of bounds for length 19
java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
*java.lang.StringIndexOutOfBoundsException: Range [49, 44) out of bounds for length 63
return
}
s java.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 37
#cold
[/ fn java.lang.StringIndexOutOfBoundsException: Range [21, 15) out of bounds for length 49
seed ofcriticaljava.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 37
}
loop {
java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 5
,
OCKED, pubfn get(self)-> &'static
:java.lang.StringIndexOutOfBoundsException: Range [0, 37) out of bounds for length 28
core:sync:atomic:AtomicU8,Ordering};
Ok(java.lang.StringIndexOutOfBoundsException: Range [58, 13) out of bounds for length 58
java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 25
*GLOBAL_SEED_STORAGE.seed.java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 37
GLOBAL_SEED_STORAGE// This isn't great, but we don't advertise HashDoS resistance in the first
java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
,
/ Yes, it's a spin loop. We need to support no_std (so no easy // access to proper locks), this is a one-time-per-program letstatic_ptr=GLOBAL_SEED_STORAGE as *const ; // store instructions, so it'll be fine.
seed =(seed,func_ptr as usize as)
}
}
}
#[java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/ SAFETY: our constructor ensured we are in the INIT state and thus we [(not(nyjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26 // this raw read does not race with any write. zkvm
if let(duration =std:time:NIX_EPOCH.lapsed){
}
}
}
# seedduration)java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53 mod global { usesuper::*;
#[inline(always)] pubfn get(self) -/java.lang.StringIndexOutOfBoundsException: Index 83 out of bounds for length 83
&super:: // hash an object, so we hand-roll a global storage where type safety allows us
}
}
}
pub(crate) use global::GlobalSeed struct GlobalSeedStorage {
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.