Mercurial > hg > graal-compiler
annotate src/os/windows/vm/os_windows.hpp @ 389:ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
Summary: For windows server 2003 added option to reserve large pages individually.
Reviewed-by: alanb, jcoomes, tonyp, apetrusenko
| author | jmasa |
|---|---|
| date | Thu, 02 Oct 2008 12:01:08 -0700 |
| parents | a61af66fc99e |
| children | ad8c8ca4ab0f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // Win32_OS defines the interface to windows operating systems | |
| 26 | |
| 27 class win32 { | |
| 28 | |
| 29 protected: | |
| 30 static int _vm_page_size; | |
| 31 static int _vm_allocation_granularity; | |
| 32 static int _processor_type; | |
| 33 static int _processor_level; | |
| 34 static julong _physical_memory; | |
| 35 static size_t _default_stack_size; | |
| 36 static bool _is_nt; | |
|
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ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
0
diff
changeset
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37 static bool _is_windows_2003; |
| 0 | 38 |
| 39 public: | |
| 40 // Windows-specific interface: | |
| 41 static void initialize_system_info(); | |
| 42 static void setmode_streams(); | |
| 43 | |
| 44 // Processor info as provided by NT | |
| 45 static int processor_type() { return _processor_type; } | |
| 46 // Processor level may not be accurate on non-NT systems | |
| 47 static int processor_level() { | |
| 48 assert(is_nt(), "use vm_version instead"); | |
| 49 return _processor_level; | |
| 50 } | |
| 51 static julong available_memory(); | |
| 52 static julong physical_memory() { return _physical_memory; } | |
| 53 | |
| 54 public: | |
| 55 // Generic interface: | |
| 56 | |
| 57 // Trace number of created threads | |
| 58 static intx _os_thread_limit; | |
| 59 static volatile intx _os_thread_count; | |
| 60 | |
| 61 // Tells whether the platform is NT or Windown95 | |
| 62 static bool is_nt() { return _is_nt; } | |
| 63 | |
|
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ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
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diff
changeset
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64 // Tells whether the platform is Windows 2003 |
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ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
0
diff
changeset
|
65 static bool is_windows_2003() { return _is_windows_2003; } |
|
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
0
diff
changeset
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66 |
| 0 | 67 // Returns the byte size of a virtual memory page |
| 68 static int vm_page_size() { return _vm_page_size; } | |
| 69 | |
| 70 // Returns the size in bytes of memory blocks which can be allocated. | |
| 71 static int vm_allocation_granularity() { return _vm_allocation_granularity; } | |
| 72 | |
| 73 // Read the headers for the executable that started the current process into | |
| 74 // the structure passed in (see winnt.h). | |
| 75 static void read_executable_headers(PIMAGE_NT_HEADERS); | |
| 76 | |
| 77 // Default stack size for the current process. | |
| 78 static size_t default_stack_size() { return _default_stack_size; } | |
| 79 | |
| 80 #ifndef _WIN64 | |
| 81 // A wrapper to install a structured exception handler for fast JNI accesors. | |
| 82 static address fast_jni_accessor_wrapper(BasicType); | |
| 83 #endif | |
| 84 | |
| 85 // filter function to ignore faults on serializations page | |
| 86 static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e); | |
| 87 }; | |
| 88 | |
| 89 class PlatformEvent : public CHeapObj { | |
| 90 private: | |
| 91 double CachePad [4] ; // increase odds that _Event is sole occupant of cache line | |
| 92 volatile int _Event ; | |
| 93 HANDLE _ParkHandle ; | |
| 94 | |
| 95 public: // TODO-FIXME: make dtor private | |
| 96 ~PlatformEvent() { guarantee (0, "invariant") ; } | |
| 97 | |
| 98 public: | |
| 99 PlatformEvent() { | |
| 100 _Event = 0 ; | |
| 101 _ParkHandle = CreateEvent (NULL, false, false, NULL) ; | |
| 102 guarantee (_ParkHandle != NULL, "invariant") ; | |
| 103 } | |
| 104 | |
| 105 // Exercise caution using reset() and fired() - they may require MEMBARs | |
| 106 void reset() { _Event = 0 ; } | |
| 107 int fired() { return _Event; } | |
| 108 void park () ; | |
| 109 void unpark () ; | |
| 110 int park (jlong millis) ; | |
| 111 } ; | |
| 112 | |
| 113 | |
| 114 | |
| 115 class PlatformParker : public CHeapObj { | |
| 116 protected: | |
| 117 HANDLE _ParkEvent ; | |
| 118 | |
| 119 public: | |
| 120 ~PlatformParker () { guarantee (0, "invariant") ; } | |
| 121 PlatformParker () { | |
| 122 _ParkEvent = CreateEvent (NULL, true, false, NULL) ; | |
| 123 guarantee (_ParkEvent != NULL, "invariant") ; | |
| 124 } | |
| 125 | |
| 126 } ; |