• file
• revisions
• annotate
• diff
• comparison
• raw

src/os_cpu/linux_zero/vm/thread_linux_zero.hpp@710a3c8b516e (annotated)

src/os_cpu/linux_zero/vm/thread_linux_zero.hpp

Tue, 08 Aug 2017 15:57:29 +0800

author

aoqi

date

Tue, 08 Aug 2017 15:57:29 +0800

changeset 6876

710a3c8b516e

parent 2314

f95d63e2154a

parent 0

f90c822e73f8

child 9931

fd44df5e3bc3

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* Copyright 2007, 2008, 2009, 2010 Red Hat, Inc.
aoqi@0	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	5	*
aoqi@0	6	* This code is free software; you can redistribute it and/or modify it
aoqi@0	7	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	8	* published by the Free Software Foundation.
aoqi@0	9	*
aoqi@0	10	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	13	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	14	* accompanied this code).
aoqi@0	15	*
aoqi@0	16	* You should have received a copy of the GNU General Public License version
aoqi@0	17	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	18	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	19	*
aoqi@0	20	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	21	* or visit www.oracle.com if you need additional information or have any
aoqi@0	22	* questions.
aoqi@0	23	*
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	#ifndef OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP
aoqi@0	27	#define OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP
aoqi@0	28
aoqi@0	29	private:
aoqi@0	30	ZeroStack _zero_stack;
aoqi@0	31	ZeroFrame* _top_zero_frame;
aoqi@0	32
aoqi@0	33	void pd_initialize() {
aoqi@0	34	_top_zero_frame = NULL;
aoqi@0	35	}
aoqi@0	36
aoqi@0	37	public:
aoqi@0	38	ZeroStack *zero_stack() {
aoqi@0	39	return &_zero_stack;
aoqi@0	40	}
aoqi@0	41
aoqi@0	42	public:
aoqi@0	43	ZeroFrame *top_zero_frame() {
aoqi@0	44	return _top_zero_frame;
aoqi@0	45	}
aoqi@0	46	void push_zero_frame(ZeroFrame *frame) {
aoqi@0	47	*(ZeroFrame **) frame = _top_zero_frame;
aoqi@0	48	_top_zero_frame = frame;
aoqi@0	49	}
aoqi@0	50	void pop_zero_frame() {
aoqi@0	51	zero_stack()->set_sp((intptr_t *) _top_zero_frame + 1);
aoqi@0	52	_top_zero_frame = *(ZeroFrame **) _top_zero_frame;
aoqi@0	53	}
aoqi@0	54
aoqi@0	55	public:
aoqi@0	56	static ByteSize zero_stack_offset() {
aoqi@0	57	return byte_offset_of(JavaThread, _zero_stack);
aoqi@0	58	}
aoqi@0	59	static ByteSize top_zero_frame_offset() {
aoqi@0	60	return byte_offset_of(JavaThread, _top_zero_frame);
aoqi@0	61	}
aoqi@0	62
aoqi@0	63	public:
aoqi@0	64	void record_base_of_stack_pointer() {
aoqi@0	65	assert(top_zero_frame() == NULL, "junk on stack prior to Java call");
aoqi@0	66	}
aoqi@0	67	void set_base_of_stack_pointer(intptr_t* base_sp) {
aoqi@0	68	assert(base_sp == NULL, "should be");
aoqi@0	69	assert(top_zero_frame() == NULL, "junk on stack after Java call");
aoqi@0	70	}
aoqi@0	71
aoqi@0	72	public:
aoqi@0	73	void set_last_Java_frame() {
aoqi@0	74	set_last_Java_frame(top_zero_frame(), zero_stack()->sp());
aoqi@0	75	}
aoqi@0	76	void reset_last_Java_frame() {
aoqi@0	77	frame_anchor()->zap();
aoqi@0	78	}
aoqi@0	79	void set_last_Java_frame(ZeroFrame* fp, intptr_t* sp) {
aoqi@0	80	frame_anchor()->set(sp, NULL, fp);
aoqi@0	81	}
aoqi@0	82
aoqi@0	83	public:
aoqi@0	84	ZeroFrame* last_Java_fp() {
aoqi@0	85	return frame_anchor()->last_Java_fp();
aoqi@0	86	}
aoqi@0	87
aoqi@0	88	private:
aoqi@0	89	frame pd_last_frame() {
aoqi@0	90	assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
aoqi@0	91	return frame(last_Java_fp(), last_Java_sp());
aoqi@0	92	}
aoqi@0	93
aoqi@0	94	public:
aoqi@0	95	static ByteSize last_Java_fp_offset() {
aoqi@0	96	return byte_offset_of(JavaThread, _anchor) +
aoqi@0	97	JavaFrameAnchor::last_Java_fp_offset();
aoqi@0	98	}
aoqi@0	99
aoqi@0	100	public:
aoqi@0	101	// Check for pending suspend requests and pending asynchronous
aoqi@0	102	// exceptions. There are separate accessors for these, but
aoqi@0	103	// _suspend_flags is volatile so using them would be unsafe.
aoqi@0	104	bool has_special_condition_for_native_trans() {
aoqi@0	105	return _suspend_flags != 0;
aoqi@0	106	}
aoqi@0	107
aoqi@0	108	public:
aoqi@0	109	bool pd_get_top_frame_for_signal_handler(frame* fr_addr,
aoqi@0	110	void* ucontext,
aoqi@0	111	bool isInJava) {
aoqi@0	112	ShouldNotCallThis();
aoqi@0	113	}
aoqi@0	114
aoqi@0	115	// These routines are only used on cpu architectures that
aoqi@0	116	// have separate register stacks (Itanium).
aoqi@0	117	static bool register_stack_overflow() { return false; }
aoqi@0	118	static void enable_register_stack_guard() {}
aoqi@0	119	static void disable_register_stack_guard() {}
aoqi@0	120
aoqi@0	121	#endif // OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP