Changeset 12b5e94a for libcfa/src/concurrency

Timestamp:

Feb 9, 2022, 10:59:05 PM (2 years ago)

Author:

Peter A. Buhr <pabuhr@…>

Branches:

ADT, ast-experimental, enum, forall-pointer-decay, master, pthread-emulation, qualifiedEnum

Children:

454b4e0

Parents:

7a15b7e

Message:

add fast PRNG code

Location:

libcfa/src/concurrency

Files:

• thread.cfa (modified) (2 diffs)
• thread.hfa (modified) (2 diffs)

libcfa/src/concurrency/thread.cfa

@@ -10 +10 @@
 // Created On       : Tue Jan 17 12:27:26 2017
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Thu Jan 13 20:11:55 2022
-// Update Count     : 42
+// Last Modified On : Sat Jan 15 14:34:58 2022
+// Update Count     : 45
 //
 
@@ -179 +179 @@
         GENERATOR( active_thread()->random_state );
 } // set_seed
-uint32_t prng( void ) { return GENERATOR( active_thread()->random_state ); } // [0,UINT_MAX]
+
+uint32_t prng( void ) {                                                                 // [0,UINT_MAX]
+        uint32_t & state = active_thread()->random_state;
+        return GENERATOR( state );
+} // prng
 
 // Local Variables: //

libcfa/src/concurrency/thread.hfa

@@ -10 +10 @@
 // Created On       : Tue Jan 17 12:27:26 2017
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Thu Jan  6 16:40:16 2022
-// Update Count     : 7
+// Last Modified On : Wed Feb  9 22:10:14 2022
+// Update Count     : 14
 //
 
@@ -130 +130 @@
 T & join( T & this );
 
+//----------
+static inline {
+        uint32_t prng( thread$ & th ) __attribute__(( warn_unused_result )) { return LCG( th.random_state ); } // [0,UINT_MAX]
+        uint32_t prng( thread$ & th, uint32_t u ) __attribute__(( warn_unused_result )) { return prng( th ) % u; } // [0,u)
+        uint32_t prng( thread$ & th, uint32_t l, uint32_t u ) __attribute__(( warn_unused_result )) { return prng( th, u - l + 1 ) + l; } // [l,u]
+} // prng
+
 // Local Variables: //
 // mode: c //