Set omp_wait_policy=passive

Author: dengwirda

src/jigsaw.hpp

@@ -1133,6 +1133,8 @@
 
 #   ifdef __lib_jigsaw
 
+#   include <cstdlib>
+
 #   include "liblib/init_jig_t.hpp"
 #   include "liblib/init_msh_t.hpp"
 
@@ -1170,6 +1172,8 @@
         __unreferenced(_time) ; // why does MSVC need this??
 #       endif//__use_timers
 
+        putenv("OMP_WAIT_POLICY=PASSIVE");
+        
     /*--------------------------------- init. geo. kernel */
         mp_float::exactinit() ;
 
@@ -1590,6 +1594,8 @@
 
 #   if defined(__cmd_jigsaw)
 
+#   include <cstdlib>
+
     __normal_call iptr_type main (      // cmd-jigsaw
         int           _argc ,
         char        **_argv
@@ -1612,6 +1618,8 @@
         __unreferenced(_time) ; // why does MSVC need this??
 #       endif//__use_timers
 
+        putenv("OMP_WAIT_POLICY=PASSIVE");
+        
     /*--------------------------------- init. geo. kernel */
         mp_float::exactinit() ;