Wed, 09 Feb 2011 11:08:10 +0100
7014918: Improve core/minidump handling in Hotspot
Summary: Added Minidump support on Windows, enabled large page core dumps when coredump_filter is present and writing out path/rlimit for core dumps.
Reviewed-by: poonam, dsamersoff, sla, coleenp
1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef OS_WINDOWS_VM_OS_WINDOWS_HPP
26 #define OS_WINDOWS_VM_OS_WINDOWS_HPP
28 // Win32_OS defines the interface to windows operating systems
30 class win32 {
32 protected:
33 static int _vm_page_size;
34 static int _vm_allocation_granularity;
35 static int _processor_type;
36 static int _processor_level;
37 static julong _physical_memory;
38 static size_t _default_stack_size;
39 static bool _is_nt;
40 static bool _is_windows_2003;
41 static bool _is_windows_server;
43 public:
44 // Windows-specific interface:
45 static void initialize_system_info();
46 static void setmode_streams();
48 // Processor info as provided by NT
49 static int processor_type() { return _processor_type; }
50 // Processor level may not be accurate on non-NT systems
51 static int processor_level() {
52 assert(is_nt(), "use vm_version instead");
53 return _processor_level;
54 }
55 static julong available_memory();
56 static julong physical_memory() { return _physical_memory; }
58 public:
59 // Generic interface:
61 // Trace number of created threads
62 static intx _os_thread_limit;
63 static volatile intx _os_thread_count;
65 // Tells whether the platform is NT or Windown95
66 static bool is_nt() { return _is_nt; }
68 // Tells whether this is a server version of Windows
69 static bool is_windows_server() { return _is_windows_server; }
71 // Tells whether the platform is Windows 2003
72 static bool is_windows_2003() { return _is_windows_2003; }
74 // Returns the byte size of a virtual memory page
75 static int vm_page_size() { return _vm_page_size; }
77 // Returns the size in bytes of memory blocks which can be allocated.
78 static int vm_allocation_granularity() { return _vm_allocation_granularity; }
80 // Read the headers for the executable that started the current process into
81 // the structure passed in (see winnt.h).
82 static void read_executable_headers(PIMAGE_NT_HEADERS);
84 // Default stack size for the current process.
85 static size_t default_stack_size() { return _default_stack_size; }
87 #ifndef _WIN64
88 // A wrapper to install a structured exception handler for fast JNI accesors.
89 static address fast_jni_accessor_wrapper(BasicType);
90 #endif
92 // filter function to ignore faults on serializations page
93 static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e);
94 };
96 class PlatformEvent : public CHeapObj {
97 private:
98 double CachePad [4] ; // increase odds that _Event is sole occupant of cache line
99 volatile int _Event ;
100 HANDLE _ParkHandle ;
102 public: // TODO-FIXME: make dtor private
103 ~PlatformEvent() { guarantee (0, "invariant") ; }
105 public:
106 PlatformEvent() {
107 _Event = 0 ;
108 _ParkHandle = CreateEvent (NULL, false, false, NULL) ;
109 guarantee (_ParkHandle != NULL, "invariant") ;
110 }
112 // Exercise caution using reset() and fired() - they may require MEMBARs
113 void reset() { _Event = 0 ; }
114 int fired() { return _Event; }
115 void park () ;
116 void unpark () ;
117 int park (jlong millis) ;
118 } ;
122 class PlatformParker : public CHeapObj {
123 protected:
124 HANDLE _ParkEvent ;
126 public:
127 ~PlatformParker () { guarantee (0, "invariant") ; }
128 PlatformParker () {
129 _ParkEvent = CreateEvent (NULL, true, false, NULL) ;
130 guarantee (_ParkEvent != NULL, "invariant") ;
131 }
133 } ;
135 #endif // OS_WINDOWS_VM_OS_WINDOWS_HPP