Mercurial > hg > truffle
annotate src/os/windows/vm/os_windows.hpp @ 1865:1c352af0135d
6763959: java.util.concurrent.locks.LockSupport.parkUntil(0) blocks forever
Summary: Absolute time 0 needs to return immediately.
Reviewed-by: phh, dcubed, dholmes
author | acorn |
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date | Mon, 04 Oct 2010 13:11:10 -0400 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 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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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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64 // Tells whether the platform is Windows 2003 |
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65 static bool is_windows_2003() { return _is_windows_2003; } |
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6660681: Incrementally reserve pages on win server 2003 for better large page affinity
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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 } ; |