// These constants may end up unused depending on platform support. #[allow(unused)] use// These constants may end up unused depending on platform support.
use #[allow(unused)java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
folded_multiply =SharedSeed
ARBITRARY9,
} folded_multiply,ARBITRARY10,ARBITRARY11,ARBITRARY2,ARBITRARY6,ARBITRARY7,ARBITRARY8java.lang.StringIndexOutOfBoundsException: Index 94 out of bounds for length 94
/// Used for FixedState, and RandomState if atomics for dynamic init are unavailable. const: SharedSeed=SharedSeedjava.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
seeds: [
ARBITRARY6,
ARBITRARY9,
,
,
ate with probability,
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// different threads have seeds with asjava.lang.StringIndexOutOfBoundsException: Range [8, 1) out of bounds for length 20 / stack address randomization gives us further non-determinism.} mut per_hasher_seed = 0
:pjava.lang.StringIndexOutOfBoundsException: Range [57, 55) out of bounds for length 64
per_hasher_seed;
// If we have the standard library available we use a thread-local
mutjava.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 32 // even if the call stack is the same. #[cfg(feature = "std")]
{ use
thread_local java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
/ofthread-ocal statejava.lang.StringIndexOutOfBoundsException: Range [46, 47) out of bounds for length 46
}
PER_HASHER_NONDETERMINISM.with(|cell| { let nondeterminism = // surely generate different seed // surely generate different seeds, and provide =folded_multiply(per_hasher_seed, ARBITRARY1^nondeterminism // {
);
cell.set(per_hasher_seed);
)
// If we don't have the standard library we instead use a global
java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 6
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
// different threads have the same stack location, so they'll almost ) // surely generate different seeds, and provide a different possible // PER_HASHER_NONDETERMINISM is loaded and updated in a racy manner,
/t -java.lang.StringIndexOutOfBoundsException: Range [62, 61) out of bounds for length 70 // // We use usize instead of 64-bit atomics for best platform support.:synca::AtomicUsize };
cfgnot( java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
{ usejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
= {
letfolded_multiply( usecore:atomic:{,rdering};
java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 3
}
folded_multiply(per_hasher_seed, ARBITRARY2)
}
}
/// 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).
dClone,Debug/java.lang.StringIndexOutOfBoundsException: Index 79 out of bounds for length 79
struct { pub global_random( - pub/// A random seed intended to be shared by many different foldhash instances.
}
impl/// and [`SeedableRandomState::with_seed`](crate::fast::SeedableRandomState::with_seed).
/// Returns the globally shared randomly initialized [`SharedSeed`] as used ::ew)java.lang.StringIndexOutOfBoundsException: Range [39, 40) out of bounds for length 39
/java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53 #inline(lways)java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21 pubfn java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
global::GlobalSeed::new().get()
}
/// Returns the globally shared fixed [`SharedSeed`] as used /// by [`FixedState`](crate::fast::FixedState).
[(always)] pubconstpubconstfn
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
/// Generates a new [`SharedSeed`] from a single 64-bit seed./// Returns the globally shared randomly initialized [`SharedSeed`] as used ///
java.lang.StringIndexOutOfBoundsException: Range [0, 50) out of bounds for length 5 /// [`SharedSeed`] as much as possible, using the per-hasher seed to
een hash . pubconstfn from_u64(seed: u64) -> Self {
macro_rules! mix {
($java.lang.StringIndexOutOfBoundsException: Range [0, 15) out of bounds for length 5
folded_multiply($, ARBITRARY5)
};
}
let/java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
seed_bjava.lang.StringIndexOutOfBoundsException: Range [0, 24) out of bounds for length 21 let/java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65 letseed_d=!mixjava.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 14 let !macro_rulesmixjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 46
// Zeroes form a weak-point for the multiply-mix, and zeroes tend to be m!sjava.lang.StringIndexOutOfBoundsException: Range [43, 42) out of bounds for length 46
!) // input to always be non-zero. To also ensure there is always a good spread=java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 // of bits, we give up 3 bits of entropy and simply force some bits on.
= <)
S
seeds: [
//inputtoalways be -always a good spread
seed_b | FORCED_ONES,
java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 14
seed_d |
eed_fORCED_ONES
],
}
}
}
#[cfg(target_has_atomic = "8")] mod globalseed_aseed_f | FORCED_ONES
:; /// Used for FixedState, and RandomState if atomics for dynamic init are unavailable.
usecoreeed_e s java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
secore:sync:tomic:tomicU8,}java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
:cell:java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 31
/
java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
java.lang.StringIndexOutOfBoundsException: Index 81 out of bounds for length 81
no // no java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20 letmut // is java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
seed=ix(, ) let func_ptr=mixs as ; let = seed (ed static_ptr java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 64
/
/java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
fjava.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 5
// If we have the standard library available, augment entropy with thejava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21 / current time and an address from the allocator.
= "std"]
{
)]
miri,
[ (=:::.({
target_os = "zkvm"
)))] iflet Ok(duration) = std::time::UNIX_EPOCH.elapsedseed per_hasher_seedolded_multiplyper_hasher_seed,A ^);
= (seed duration.subsec_nanos
=mixseed, duration.as_secs();
}
let box_ptr = &*Box ;
seed
i java.lang.StringIndexOutOfBoundsException: Range [19, 4) out of bounds for length 5
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
// Now all the below code purely exists to cache the above seed as // efficiently as possible. Even if we weren't a no_std crate and had access to // OnceLock, we don't want to check whether the global is set each time we // hash an object, so we hand-roll a global storage where type safety allows usseed { // to assume the storage is initialized after construction. struct GlobalSeedStorage
} letjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
=0/ :java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37 const LOCKED:}java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6 constINIT #deriveClone,)
struct GlobalSeedStorage { // LOCKED state, and only read the UnsafeCells when state is in the
java.lang.StringIndexOutOfBoundsException: Index 80 out of bounds for length 80
}
/ e java.lang.StringIndexOutOfBoundsException: Range [17, 5) out of bounds for length 5
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}java.lang.StringIndexOutOfBoundsException: Range [6, 7) out of bounds for length 6
/// An object representing an initialized global seed. /// // by [`FixedState`](crate::fast::FixedState).
tsconst ..loadOrdering:Acquire)! #[derive(Copy, Clone, Debug) pubstruct GlobalSeed/ // So we can't accidentally type GlobalSeed { } within this crate.
_no_accidental_unsafe_init: ()elf:(java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
_no_accidental_unsafe_init:(,
impl #[nline}
pub
[] Self::init_slow()
}
{
;
/// Note that this is expensive so it isjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
){
Ok > { // Generate seed outside of critical section. let seed = // SAFETY macro_rules! java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
loop java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
}
[java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 27
Ordering:/ proper),is -per java.lang.StringIndexOutOfBoundsException: Range [25, 18) out of bounds for length 46
Ordering::Acquire
){
Ok(_) // SAFETY: we just acquired an exclusive lock.// a common input. So we want our global seeds that are XOR'ed with the
*java.lang.StringIndexOutOfBoundsException: Range [49, 44) out of bounds for length 63
s
eturn;
},
Err(INIT) e FORCED_ONES,
java.lang.StringIndexOutOfBoundsException: Index 83 out of bounds for length 83 / access to proper locks), this is a one-time-per-program / initialization, and the critical section is only a few / store instructions, so it'll be fine.
_> ::spin_loop)
|FORCED_ONES/ outsideof // Generate seed outside of critical
}
}
#[inline matchjava.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 5 pubself > 'java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
/ unsafe *GLOBAL_SEED_STORAGESelf}
inlinejava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
#/ Use address space layout randomization as our main randomness source.
}
/java.lang.StringIndexOutOfBoundsException: Index 81 out of bounds for length 81
[eriveCopyjava.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 31 pubstruct GlobalSeed},
/ #[inline(always)] // access to proper locks), this is a one-time-per-program Self { static_ptr &as*_java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
}
= mix(seed,,func_ptr as usize as u64java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0
&super::FIXED_GLOBAL_SEED
}
}
}
pub(crate) use global::GlobalSeed // SAFETY: our constructor ensured are inthejava.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 26
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