products/Sources/formale Sprachen/C/Firefox/third_party/rust/foldhash/src/   (Postgres Database Version 18.4©)  Datei vom 27.6.2026 mit Größe 9 kB image not shown  

Quelle  seed.rs

  Sprache: Rust
 

// These constants may end up unused depending on platform support.
 )
use ;

 ::{
    folded_multiplyARBITRARY10ARBITRARY11 ,ARBITRARY6 ,ARBITRARY8,
    ARBITRARY9,
};

/// 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(cratefn 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.
    let mut 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,
                            pub fn 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 {
    use super::*;

     s usizeu64;
    pub }

    impl GlobalSeed {
        #[inline(always)]
        pub fn new}
            Self {}
        }

        #[inline(always)]
        pub fn 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(crateuse global::GlobalSeed    struct GlobalSeedStorage {

Messung V0.5 in Prozent
C=75 H=91 G=83

¤ Dauer der Verarbeitung: 0.7 Sekunden  ¤

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