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src/os/windows/vm/os_windows.hpp@63d374c54045 (annotated)

src/os/windows/vm/os_windows.hpp

Wed, 09 Feb 2011 11:08:10 +0100

author

ctornqvi

date

Wed, 09 Feb 2011 11:08:10 +0100

changeset 2520

63d374c54045

parent 2314

f95d63e2154a

child 3031

b1cbb0907b36

permissions

-rw-r--r--

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

duke@435	1	/*
ctornqvi@2520	2	* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef OS_WINDOWS_VM_OS_WINDOWS_HPP
stefank@2314	26	#define OS_WINDOWS_VM_OS_WINDOWS_HPP
stefank@2314	27
duke@435	28	// Win32_OS defines the interface to windows operating systems
duke@435	29
duke@435	30	class win32 {
duke@435	31
duke@435	32	protected:
duke@435	33	static int _vm_page_size;
duke@435	34	static int _vm_allocation_granularity;
duke@435	35	static int _processor_type;
duke@435	36	static int _processor_level;
duke@435	37	static julong _physical_memory;
duke@435	38	static size_t _default_stack_size;
duke@435	39	static bool _is_nt;
jmasa@824	40	static bool _is_windows_2003;
ctornqvi@2520	41	static bool _is_windows_server;
duke@435	42
duke@435	43	public:
duke@435	44	// Windows-specific interface:
duke@435	45	static void initialize_system_info();
duke@435	46	static void setmode_streams();
duke@435	47
duke@435	48	// Processor info as provided by NT
duke@435	49	static int processor_type() { return _processor_type; }
duke@435	50	// Processor level may not be accurate on non-NT systems
duke@435	51	static int processor_level() {
duke@435	52	assert(is_nt(), "use vm_version instead");
duke@435	53	return _processor_level;
duke@435	54	}
duke@435	55	static julong available_memory();
duke@435	56	static julong physical_memory() { return _physical_memory; }
duke@435	57
duke@435	58	public:
duke@435	59	// Generic interface:
duke@435	60
duke@435	61	// Trace number of created threads
duke@435	62	static intx _os_thread_limit;
duke@435	63	static volatile intx _os_thread_count;
duke@435	64
duke@435	65	// Tells whether the platform is NT or Windown95
duke@435	66	static bool is_nt() { return _is_nt; }
duke@435	67
ctornqvi@2520	68	// Tells whether this is a server version of Windows
ctornqvi@2520	69	static bool is_windows_server() { return _is_windows_server; }
ctornqvi@2520	70
jmasa@824	71	// Tells whether the platform is Windows 2003
jmasa@824	72	static bool is_windows_2003() { return _is_windows_2003; }
jmasa@824	73
duke@435	74	// Returns the byte size of a virtual memory page
duke@435	75	static int vm_page_size() { return _vm_page_size; }
duke@435	76
duke@435	77	// Returns the size in bytes of memory blocks which can be allocated.
duke@435	78	static int vm_allocation_granularity() { return _vm_allocation_granularity; }
duke@435	79
duke@435	80	// Read the headers for the executable that started the current process into
duke@435	81	// the structure passed in (see winnt.h).
duke@435	82	static void read_executable_headers(PIMAGE_NT_HEADERS);
duke@435	83
duke@435	84	// Default stack size for the current process.
duke@435	85	static size_t default_stack_size() { return _default_stack_size; }
duke@435	86
duke@435	87	#ifndef _WIN64
duke@435	88	// A wrapper to install a structured exception handler for fast JNI accesors.
duke@435	89	static address fast_jni_accessor_wrapper(BasicType);
duke@435	90	#endif
duke@435	91
duke@435	92	// filter function to ignore faults on serializations page
duke@435	93	static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e);
duke@435	94	};
duke@435	95
duke@435	96	class PlatformEvent : public CHeapObj {
duke@435	97	private:
duke@435	98	double CachePad [4] ; // increase odds that _Event is sole occupant of cache line
duke@435	99	volatile int _Event ;
duke@435	100	HANDLE _ParkHandle ;
duke@435	101
duke@435	102	public: // TODO-FIXME: make dtor private
duke@435	103	~PlatformEvent() { guarantee (0, "invariant") ; }
duke@435	104
duke@435	105	public:
duke@435	106	PlatformEvent() {
duke@435	107	_Event = 0 ;
duke@435	108	_ParkHandle = CreateEvent (NULL, false, false, NULL) ;
duke@435	109	guarantee (_ParkHandle != NULL, "invariant") ;
duke@435	110	}
duke@435	111
duke@435	112	// Exercise caution using reset() and fired() - they may require MEMBARs
duke@435	113	void reset() { _Event = 0 ; }
duke@435	114	int fired() { return _Event; }
duke@435	115	void park () ;
duke@435	116	void unpark () ;
duke@435	117	int park (jlong millis) ;
duke@435	118	} ;
duke@435	119
duke@435	120
duke@435	121
duke@435	122	class PlatformParker : public CHeapObj {
duke@435	123	protected:
duke@435	124	HANDLE _ParkEvent ;
duke@435	125
duke@435	126	public:
duke@435	127	~PlatformParker () { guarantee (0, "invariant") ; }
duke@435	128	PlatformParker () {
duke@435	129	_ParkEvent = CreateEvent (NULL, true, false, NULL) ;
duke@435	130	guarantee (_ParkEvent != NULL, "invariant") ;
duke@435	131	}
duke@435	132
duke@435	133	} ;
stefank@2314	134
stefank@2314	135	#endif // OS_WINDOWS_VM_OS_WINDOWS_HPP