jdk-sandbox: src/hotspot/cpu/aarch64/gc/z/zGlobals_aarch64.cpp@cc3a82fc7bcb (annotated)

55379 865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	1	/*
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	2	* Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	4	*
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	5	* This code is free software; you can redistribute it and/or modify it
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	6	* under the terms of the GNU General Public License version 2 only, as
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	7	* published by the Free Software Foundation.
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	8	*
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	9	* This code is distributed in the hope that it will be useful, but WITHOUT
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	12	* version 2 for more details (a copy is included in the LICENSE file that
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	13	* accompanied this code).
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	14	*
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	15	* You should have received a copy of the GNU General Public License version
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	16	* 2 along with this work; if not, write to the Free Software Foundation,
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	18	*
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	20	* or visit www.oracle.com if you need additional information or have any
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	21	* questions.
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	22	*/
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	23
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	24	#include "precompiled.hpp"
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	25	#include "gc/z/zGlobals.hpp"
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	26	#include "gc/z/zUtils.inline.hpp"
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	27	#include "runtime/globals.hpp"
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	28	#include "utilities/globalDefinitions.hpp"
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	29
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	30	//
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	31	// The heap can have three different layouts, depending on the max heap size.
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	32	//
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	33	// Address Space & Pointer Layout 1
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	34	// --------------------------------
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	35	//
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	36	// +--------------------------------+ 0x00007FFFFFFFFFFF (127TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	37	// . .
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	38	// . .
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	39	// . .
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	40	// +--------------------------------+ 0x0000014000000000 (20TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	41	// \| Remapped View \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	42	// +--------------------------------+ 0x0000010000000000 (16TB)
58453 ca80b8395923 8231776: ZGC: Fix incorrect address space description pliden parents: 58294 diff changeset	43	// . .
55379 865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	44	// +--------------------------------+ 0x00000c0000000000 (12TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	45	// \| Marked1 View \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	46	// +--------------------------------+ 0x0000080000000000 (8TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	47	// \| Marked0 View \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	48	// +--------------------------------+ 0x0000040000000000 (4TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	49	// . .
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	50	// +--------------------------------+ 0x0000000000000000
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	51	//
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	52	// 6 4 4 4 4
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	53	// 3 6 5 2 1 0
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	54	// +--------------------+----+-----------------------------------------------+
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	55	// \|00000000 00000000 00\|1111\|11 11111111 11111111 11111111 11111111 11111111\|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	56	// +--------------------+----+-----------------------------------------------+
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	57	// \| \| \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	58	// \| \| * 41-0 Object Offset (42-bits, 4TB address space)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	59	// \| \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	60	// \| * 45-42 Metadata Bits (4-bits) 0001 = Marked0 (Address view 4-8TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	61	// \| 0010 = Marked1 (Address view 8-12TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	62	// \| 0100 = Remapped (Address view 16-20TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	63	// \| 1000 = Finalizable (Address view N/A)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	64	// \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	65	// * 63-46 Fixed (18-bits, always zero)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	66	//
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	67	//
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	68	// Address Space & Pointer Layout 2
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	69	// --------------------------------
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	70	//
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	71	// +--------------------------------+ 0x00007FFFFFFFFFFF (127TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	72	// . .
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	73	// . .
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	74	// . .
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	75	// +--------------------------------+ 0x0000280000000000 (40TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	76	// \| Remapped View \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	77	// +--------------------------------+ 0x0000200000000000 (32TB)
58453 ca80b8395923 8231776: ZGC: Fix incorrect address space description pliden parents: 58294 diff changeset	78	// . .
55379 865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	79	// +--------------------------------+ 0x0000180000000000 (24TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	80	// \| Marked1 View \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	81	// +--------------------------------+ 0x0000100000000000 (16TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	82	// \| Marked0 View \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	83	// +--------------------------------+ 0x0000080000000000 (8TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	84	// . .
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	85	// +--------------------------------+ 0x0000000000000000
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	86	//
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	87	// 6 4 4 4 4
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	88	// 3 7 6 3 2 0
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	89	// +------------------+-----+------------------------------------------------+
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	90	// \|00000000 00000000 0\|1111\|111 11111111 11111111 11111111 11111111 11111111\|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	91	// +-------------------+----+------------------------------------------------+
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	92	// \| \| \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	93	// \| \| * 42-0 Object Offset (43-bits, 8TB address space)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	94	// \| \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	95	// \| * 46-43 Metadata Bits (4-bits) 0001 = Marked0 (Address view 8-16TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	96	// \| 0010 = Marked1 (Address view 16-24TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	97	// \| 0100 = Remapped (Address view 32-40TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	98	// \| 1000 = Finalizable (Address view N/A)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	99	// \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	100	// * 63-47 Fixed (17-bits, always zero)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	101	//
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	102	//
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	103	// Address Space & Pointer Layout 3
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	104	// --------------------------------
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	105	//
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	106	// +--------------------------------+ 0x00007FFFFFFFFFFF (127TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	107	// . .
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	108	// . .
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	109	// . .
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	110	// +--------------------------------+ 0x0000500000000000 (80TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	111	// \| Remapped View \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	112	// +--------------------------------+ 0x0000400000000000 (64TB)
58453 ca80b8395923 8231776: ZGC: Fix incorrect address space description pliden parents: 58294 diff changeset	113	// . .
55379 865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	114	// +--------------------------------+ 0x0000300000000000 (48TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	115	// \| Marked1 View \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	116	// +--------------------------------+ 0x0000200000000000 (32TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	117	// \| Marked0 View \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	118	// +--------------------------------+ 0x0000100000000000 (16TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	119	// . .
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	120	// +--------------------------------+ 0x0000000000000000
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	121	//
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	122	// 6 4 4 4 4
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	123	// 3 8 7 4 3 0
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	124	// +------------------+----+-------------------------------------------------+
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	125	// \|00000000 00000000 \|1111\|1111 11111111 11111111 11111111 11111111 11111111\|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	126	// +------------------+----+-------------------------------------------------+
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	127	// \| \| \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	128	// \| \| * 43-0 Object Offset (44-bits, 16TB address space)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	129	// \| \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	130	// \| * 47-44 Metadata Bits (4-bits) 0001 = Marked0 (Address view 16-32TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	131	// \| 0010 = Marked1 (Address view 32-48TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	132	// \| 0100 = Remapped (Address view 64-80TB)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	133	// \| 1000 = Finalizable (Address view N/A)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	134	// \|
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	135	// * 63-48 Fixed (16-bits, always zero)
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	136	//
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	137
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	138	uintptr_t ZPlatformAddressBase() {
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	139	return 0;
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	140	}
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	141
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	142	size_t ZPlatformAddressOffsetBits() {
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	143	const size_t min_address_offset_bits = 42; // 4TB
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	144	const size_t max_address_offset_bits = 44; // 16TB
58787 32d39d9525f9 8231552: ZGC: Refine address space reservation pliden parents: 58453 diff changeset	145	const size_t address_offset = ZUtils::round_up_power_of_2(MaxHeapSize * ZVirtualToPhysicalRatio);
55379 865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	146	const size_t address_offset_bits = log2_intptr(address_offset);
59221 cc3a82fc7bcb 8233702: Introduce helper function to clamp value to range tschatzl parents: 58787 diff changeset	147	return clamp(address_offset_bits, min_address_offset_bits, max_address_offset_bits);
55379 865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	148	}
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	149
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	150	size_t ZPlatformAddressMetadataShift() {
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	151	return ZPlatformAddressOffsetBits();
865775b86780 8214527: ZGC for Aarch64 smonteith parents: diff changeset	152	}

author	tschatzl
	Fri, 22 Nov 2019 10:03:38 +0100
changeset 59221	cc3a82fc7bcb
parent 58787	32d39d9525f9
permissions	-rw-r--r--