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src/os_cpu/linux_zero/vm/thread_linux_zero.hpp@8c95980d0b66 (annotated)

src/os_cpu/linux_zero/vm/thread_linux_zero.hpp

Sat, 07 Nov 2020 10:30:02 +0800

author

aoqi

date

Sat, 07 Nov 2020 10:30:02 +0800

changeset 10026

8c95980d0b66

parent 9931

fd44df5e3bc3

permissions

-rw-r--r--

Added tag mips-jdk8u275-b01 for changeset d3b4d62f391f

never@1445	1	/*
stefank@2314	2	* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
twisti@1814	3	* Copyright 2007, 2008, 2009, 2010 Red Hat, Inc.
never@1445	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@1445	5	*
never@1445	6	* This code is free software; you can redistribute it and/or modify it
never@1445	7	* under the terms of the GNU General Public License version 2 only, as
never@1445	8	* published by the Free Software Foundation.
never@1445	9	*
never@1445	10	* This code is distributed in the hope that it will be useful, but WITHOUT
never@1445	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@1445	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
never@1445	13	* version 2 for more details (a copy is included in the LICENSE file that
never@1445	14	* accompanied this code).
never@1445	15	*
never@1445	16	* You should have received a copy of the GNU General Public License version
never@1445	17	* 2 along with this work; if not, write to the Free Software Foundation,
never@1445	18	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@1445	19	*
trims@1907	20	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	21	* or visit www.oracle.com if you need additional information or have any
trims@1907	22	* questions.
never@1445	23	*
never@1445	24	*/
never@1445	25
stefank@2314	26	#ifndef OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP
stefank@2314	27	#define OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP
stefank@2314	28
never@1445	29	private:
never@1445	30	ZeroStack _zero_stack;
never@1445	31	ZeroFrame* _top_zero_frame;
never@1445	32
never@1445	33	void pd_initialize() {
never@1445	34	_top_zero_frame = NULL;
never@1445	35	}
never@1445	36
never@1445	37	public:
never@1445	38	ZeroStack *zero_stack() {
never@1445	39	return &_zero_stack;
never@1445	40	}
never@1445	41
never@1445	42	public:
never@1445	43	ZeroFrame *top_zero_frame() {
never@1445	44	return _top_zero_frame;
never@1445	45	}
never@1445	46	void push_zero_frame(ZeroFrame *frame) {
never@1445	47	*(ZeroFrame **) frame = _top_zero_frame;
never@1445	48	_top_zero_frame = frame;
never@1445	49	}
never@1445	50	void pop_zero_frame() {
never@1445	51	zero_stack()->set_sp((intptr_t *) _top_zero_frame + 1);
never@1445	52	_top_zero_frame = *(ZeroFrame **) _top_zero_frame;
never@1445	53	}
never@1445	54
never@1445	55	public:
never@1445	56	static ByteSize zero_stack_offset() {
never@1445	57	return byte_offset_of(JavaThread, _zero_stack);
never@1445	58	}
never@1445	59	static ByteSize top_zero_frame_offset() {
never@1445	60	return byte_offset_of(JavaThread, _top_zero_frame);
never@1445	61	}
never@1445	62
never@1445	63	public:
never@1445	64	void record_base_of_stack_pointer() {
never@1445	65	assert(top_zero_frame() == NULL, "junk on stack prior to Java call");
never@1445	66	}
never@1445	67	void set_base_of_stack_pointer(intptr_t* base_sp) {
never@1445	68	assert(base_sp == NULL, "should be");
never@1445	69	assert(top_zero_frame() == NULL, "junk on stack after Java call");
never@1445	70	}
never@1445	71
never@1445	72	public:
never@1445	73	void set_last_Java_frame() {
twisti@1860	74	set_last_Java_frame(top_zero_frame(), zero_stack()->sp());
never@1445	75	}
never@1445	76	void reset_last_Java_frame() {
twisti@1860	77	frame_anchor()->zap();
twisti@1814	78	}
twisti@1860	79	void set_last_Java_frame(ZeroFrame* fp, intptr_t* sp) {
twisti@1860	80	frame_anchor()->set(sp, NULL, fp);
twisti@1860	81	}
twisti@1860	82
twisti@1860	83	public:
twisti@1860	84	ZeroFrame* last_Java_fp() {
twisti@1860	85	return frame_anchor()->last_Java_fp();
never@1445	86	}
never@1445	87
never@1445	88	private:
never@1445	89	frame pd_last_frame() {
never@1445	90	assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
twisti@1860	91	return frame(last_Java_fp(), last_Java_sp());
never@1445	92	}
never@1445	93
never@1445	94	public:
twisti@1867	95	static ByteSize last_Java_fp_offset() {
twisti@1867	96	return byte_offset_of(JavaThread, _anchor) +
twisti@1867	97	JavaFrameAnchor::last_Java_fp_offset();
twisti@1867	98	}
twisti@1867	99
twisti@1867	100	public:
never@1445	101	// Check for pending suspend requests and pending asynchronous
never@1445	102	// exceptions. There are separate accessors for these, but
never@1445	103	// _suspend_flags is volatile so using them would be unsafe.
never@1445	104	bool has_special_condition_for_native_trans() {
never@1445	105	return _suspend_flags != 0;
never@1445	106	}
never@1445	107
never@1445	108	public:
never@1445	109	bool pd_get_top_frame_for_signal_handler(frame* fr_addr,
never@1445	110	void* ucontext,
never@1445	111	bool isInJava) {
never@1445	112	ShouldNotCallThis();
never@1445	113	}
never@1445	114
sgehwolf@9860	115	bool pd_get_top_frame_for_profiling(frame* fr_addr,
sgehwolf@9860	116	void* ucontext,
sgehwolf@9860	117	bool isInJava) {
sgehwolf@9860	118	ShouldNotCallThis();
sgehwolf@9860	119	return false; // silence compile warning
sgehwolf@9860	120	}
sgehwolf@9860	121
sgehwolf@9860	122
never@1445	123	// These routines are only used on cpu architectures that
never@1445	124	// have separate register stacks (Itanium).
never@1445	125	static bool register_stack_overflow() { return false; }
never@1445	126	static void enable_register_stack_guard() {}
never@1445	127	static void disable_register_stack_guard() {}
stefank@2314	128
stefank@2314	129	#endif // OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP