src/share/vm/runtime/os.cpp

rev 11623 : [mq]: fix-initial-active-processor-count

@@ -69,10 +69,11 @@
 address           os::_polling_page       = NULL;
 volatile int32_t* os::_mem_serialize_page = NULL;
 uintptr_t         os::_serialize_page_mask = 0;
 long              os::_rand_seed          = 1;
 int               os::_processor_count    = 0;
+int               os::_initial_active_processor_count = 0;
 size_t            os::_page_sizes[os::page_sizes_max];
 
 #ifndef PRODUCT
 julong os::num_mallocs = 0;         // # of calls to malloc/realloc
 julong os::alloc_bytes = 0;         // # of bytes allocated

@@ -1757,10 +1758,17 @@
   }
   return result;
 }
 #endif
 
+void os::set_processor_count(int count) {
+  assert(_processor_count == 0, "Trying to set processor count twice, from %d to %d", _processor_count, count);
+  _processor_count = count;
+  _initial_active_processor_count = active_processor_count();
+  log_trace(os)("Initial active processor count is %d", _initial_active_processor_count);
+}
+
 /////////////// Unit tests ///////////////
 
 #ifndef PRODUCT
 
 #define assert_eq(a,b) assert(a == b, SIZE_FORMAT " != " SIZE_FORMAT, a, b)