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  • libcfa/src/concurrency/thread.cfa

    r1959528 r24e321c  
    1010// Created On       : Tue Jan 17 12:27:26 2017
    1111// Last Modified By : Peter A. Buhr
    12 // Last Modified On : Wed Jan 12 18:28:18 2022
    13 // Update Count     : 35
     12// Last Modified On : Wed Dec  4 09:17:49 2019
     13// Update Count     : 9
    1414//
    1515
     
    2727uint64_t thread_rand();
    2828
    29 extern uint32_t __global_random_seed;
    30 
    3129//-----------------------------------------------------------------------------
    3230// Thread ctors and dtors
    33 void ?{}( thread$ & this, const char * const name, cluster & cl, void * storage, size_t storageSize ) with( this ) {
     31void ?{}(thread$ & this, const char * const name, cluster & cl, void * storage, size_t storageSize ) with( this ) {
    3432        context{ 0p, 0p };
    3533        self_cor{ name, storage, storageSize };
     
    4745        preferred = ready_queue_new_preferred();
    4846        last_proc = 0p;
    49         random_state = __global_random_seed;
    5047        #if defined( __CFA_WITH_VERIFY__ )
    5148                canary = 0x0D15EA5E0D15EA5Ep;
     
    180177        return ret;
    181178}
    182  
    183 #define GENERATOR LCG
    184 
    185 static inline uint32_t MarsagliaXor( uint32_t & state ) {
    186         uint32_t ret = state;
    187         state ^= state << 6;
    188         state ^= state >> 21;
    189         state ^= state << 7;
    190         return ret;
    191 } // MarsagliaXor
    192 
    193 static inline uint32_t LCG( uint32_t & state ) {                // linear congruential generator
    194         uint32_t ret = state;
    195         state = 36969 * (state & 65535) + (state >> 16);        // 36969 is NOT prime! No not change it!
    196         return ret;
    197 } // LCG
    198 
    199 void set_seed( uint32_t seed ) { active_thread()->random_state = seed; __global_random_seed = seed; }
    200 uint32_t prng( void ) { return GENERATOR( active_thread()->random_state ); } // [0,UINT_MAX]
    201179
    202180// Local Variables: //
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