Changeset 42daeb4 for libcfa/src/concurrency/thread.cfa

Timestamp:

Jan 13, 2022, 10:53:25 AM (4 years ago)

Author:

caparsons <caparson@…>

Branches:

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

Children:

3eaa689

Parents:

3bb12921 (diff), 00f5fde (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge branch 'master' of plg.uwaterloo.ca:software/cfa/cfa-cc

File:

• libcfa/src/concurrency/thread.cfa (modified) (4 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 : Wed Dec  4 09:17:49 2019
-// Update Count     : 9
+// Last Modified On : Wed Jan 12 18:46:48 2022
+// Update Count     : 36
 //
 
@@ -27 +27 @@
 uint64_t thread_rand();
 
+extern uint32_t __global_random_seed;
+
 //-----------------------------------------------------------------------------
 // Thread ctors and dtors
-void ?{}(thread$ & this, const char * const name, cluster & cl, void * storage, size_t storageSize ) with( this ) {
+void ?{}( thread$ & this, const char * const name, cluster & cl, void * storage, size_t storageSize ) with( this ) {
         context{ 0p, 0p };
         self_cor{ name, storage, storageSize };
@@ -45 +47 @@
         preferred = ready_queue_new_preferred();
         last_proc = 0p;
+        random_state = __global_random_seed;
         #if defined( __CFA_WITH_VERIFY__ )
                 canary = 0x0D15EA5E0D15EA5Ep;
@@ -177 +180 @@
         return ret;
 }
+ 
+#define GENERATOR LCG
+
+static inline uint32_t MarsagliaXor( uint32_t & state ) {
+        uint32_t ret = state;
+        state ^= state << 6;
+        state ^= state >> 21;
+        state ^= state << 7;
+        return ret;
+} // MarsagliaXor
+
+static inline uint32_t LCG( uint32_t & state ) {                // linear congruential generator
+        uint32_t ret = state;
+        state = 36969 * (state & 65535) + (state >> 16);        // 36969 is NOT prime! No not change it!
+        return ret;
+} // LCG
+
+void set_seed( uint32_t seed ) {
+        active_thread()->random_state = __global_random_seed = seed;
+        GENERATOR( active_thread()->random_state );
+} // set_seed
+uint32_t prng( void ) { return GENERATOR( active_thread()->random_state ); } // [0,UINT_MAX]
 
 // Local Variables: //