duke@435: /*
duke@435:  * Copyright 1997-2006 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: // Win32_OS defines the interface to windows operating systems
duke@435: 
duke@435: class win32 {
duke@435: 
duke@435:  protected:
duke@435:   static int    _vm_page_size;
duke@435:   static int    _vm_allocation_granularity;
duke@435:   static int    _processor_type;
duke@435:   static int    _processor_level;
duke@435:   static julong _physical_memory;
duke@435:   static size_t _default_stack_size;
duke@435:   static bool   _is_nt;
jmasa@824:   static bool   _is_windows_2003;
duke@435: 
duke@435:  public:
duke@435:   // Windows-specific interface:
duke@435:   static void   initialize_system_info();
duke@435:   static void   setmode_streams();
duke@435: 
duke@435:   // Processor info as provided by NT
duke@435:   static int processor_type()  { return _processor_type;  }
duke@435:   // Processor level may not be accurate on non-NT systems
duke@435:   static int processor_level() {
duke@435:     assert(is_nt(), "use vm_version instead");
duke@435:     return _processor_level;
duke@435:   }
duke@435:   static julong available_memory();
duke@435:   static julong physical_memory() { return _physical_memory; }
duke@435: 
duke@435:  public:
duke@435:   // Generic interface:
duke@435: 
duke@435:   // Trace number of created threads
duke@435:   static          intx  _os_thread_limit;
duke@435:   static volatile intx  _os_thread_count;
duke@435: 
duke@435:   // Tells whether the platform is NT or Windown95
duke@435:   static bool is_nt() { return _is_nt; }
duke@435: 
jmasa@824:   // Tells whether the platform is Windows 2003
jmasa@824:   static bool is_windows_2003() { return _is_windows_2003; }
jmasa@824: 
duke@435:   // Returns the byte size of a virtual memory page
duke@435:   static int vm_page_size() { return _vm_page_size; }
duke@435: 
duke@435:   // Returns the size in bytes of memory blocks which can be allocated.
duke@435:   static int vm_allocation_granularity() { return _vm_allocation_granularity; }
duke@435: 
duke@435:   // Read the headers for the executable that started the current process into
duke@435:   // the structure passed in (see winnt.h).
duke@435:   static void read_executable_headers(PIMAGE_NT_HEADERS);
duke@435: 
duke@435:   // Default stack size for the current process.
duke@435:   static size_t default_stack_size() { return _default_stack_size; }
duke@435: 
duke@435: #ifndef _WIN64
duke@435:   // A wrapper to install a structured exception handler for fast JNI accesors.
duke@435:   static address fast_jni_accessor_wrapper(BasicType);
duke@435: #endif
duke@435: 
duke@435:   // filter function to ignore faults on serializations page
duke@435:   static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e);
duke@435: };
duke@435: 
duke@435: class PlatformEvent : public CHeapObj {
duke@435:   private:
duke@435:     double CachePad [4] ;   // increase odds that _Event is sole occupant of cache line
duke@435:     volatile int _Event ;
duke@435:     HANDLE _ParkHandle ;
duke@435: 
duke@435:   public:       // TODO-FIXME: make dtor private
duke@435:     ~PlatformEvent() { guarantee (0, "invariant") ; }
duke@435: 
duke@435:   public:
duke@435:     PlatformEvent() {
duke@435:       _Event   = 0 ;
duke@435:       _ParkHandle = CreateEvent (NULL, false, false, NULL) ;
duke@435:       guarantee (_ParkHandle != NULL, "invariant") ;
duke@435:     }
duke@435: 
duke@435:     // Exercise caution using reset() and fired() - they may require MEMBARs
duke@435:     void reset() { _Event = 0 ; }
duke@435:     int  fired() { return _Event; }
duke@435:     void park () ;
duke@435:     void unpark () ;
duke@435:     int  park (jlong millis) ;
duke@435: } ;
duke@435: 
duke@435: 
duke@435: 
duke@435: class PlatformParker : public CHeapObj {
duke@435:   protected:
duke@435:     HANDLE _ParkEvent ;
duke@435: 
duke@435:   public:
duke@435:     ~PlatformParker () { guarantee (0, "invariant") ; }
duke@435:     PlatformParker  () {
duke@435:       _ParkEvent = CreateEvent (NULL, true, false, NULL) ;
duke@435:       guarantee (_ParkEvent != NULL, "invariant") ;
duke@435:     }
duke@435: 
duke@435: } ;