Changeset cc7bbe6 for libcfa/src/concurrency/thread.cfa

Timestamp:

Feb 23, 2022, 11:24:34 AM (4 years ago)

Author:

Michael Brooks <mlbrooks@…>

Branches:

ADT, ast-experimental, enum, master, pthread-emulation, qualifiedEnum

Children:

08ed947

Parents:

f5a51db (diff), 3a038fa (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 : Thu Jan 13 20:11:55 2022
-// Update Count     : 42
+// Last Modified On : Sat Feb 12 15:24:18 2022
+// Update Count     : 66
 //
 
@@ -25 +25 @@
 #include "invoke.h"
 
-extern uint32_t __global_random_seed;
+extern uint32_t __global_random_seed, __global_random_prime, __global_random_mask;
 
 //-----------------------------------------------------------------------------
@@ -45 +45 @@
         preferred = ready_queue_new_preferred();
         last_proc = 0p;
-        random_state = __global_random_seed;
+        random_state = __global_random_mask ? __global_random_prime : __global_random_prime ^ rdtscl();
         #if defined( __CFA_WITH_VERIFY__ )
                 canary = 0x0D15EA5E0D15EA5Ep;
@@ -176 +176 @@
 
 void set_seed( uint32_t seed ) {
-        active_thread()->random_state = __global_random_seed = seed;
-        GENERATOR( active_thread()->random_state );
+        uint32_t & state = active_thread()->random_state;
+        state = __global_random_seed = seed;
+        GENERATOR( state );
+        __global_random_prime = state;
+        __global_random_mask = true;
 } // 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: //