jdk-sandbox: src/hotspot/os/linux/globals_linux.hpp@9cf279436b9d (annotated)

1 489c9b5090e2 Initial load duke parents: diff changeset	1	/*
49058 15765495db12 8197589: Update CPU count algorithm when both cpu shares and quotas are used bobv parents: 47903 diff changeset	2	* Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.
1 489c9b5090e2 Initial load duke parents: diff changeset	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
489c9b5090e2 Initial load duke parents: diff changeset	4	*
489c9b5090e2 Initial load duke parents: diff changeset	5	* This code is free software; you can redistribute it and/or modify it
489c9b5090e2 Initial load duke parents: diff changeset	6	* under the terms of the GNU General Public License version 2 only, as
489c9b5090e2 Initial load duke parents: diff changeset	7	* published by the Free Software Foundation.
489c9b5090e2 Initial load duke parents: diff changeset	8	*
489c9b5090e2 Initial load duke parents: diff changeset	9	* This code is distributed in the hope that it will be useful, but WITHOUT
489c9b5090e2 Initial load duke parents: diff changeset	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
489c9b5090e2 Initial load duke parents: diff changeset	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
489c9b5090e2 Initial load duke parents: diff changeset	12	* version 2 for more details (a copy is included in the LICENSE file that
489c9b5090e2 Initial load duke parents: diff changeset	13	* accompanied this code).
489c9b5090e2 Initial load duke parents: diff changeset	14	*
489c9b5090e2 Initial load duke parents: diff changeset	15	* You should have received a copy of the GNU General Public License version
489c9b5090e2 Initial load duke parents: diff changeset	16	* 2 along with this work; if not, write to the Free Software Foundation,
489c9b5090e2 Initial load duke parents: diff changeset	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
489c9b5090e2 Initial load duke parents: diff changeset	18	*
5547 f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1623 diff changeset	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1623 diff changeset	20	* or visit www.oracle.com if you need additional information or have any
f4b087cbb361 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1623 diff changeset	21	* questions.
1 489c9b5090e2 Initial load duke parents: diff changeset	22	*
489c9b5090e2 Initial load duke parents: diff changeset	23	*/
489c9b5090e2 Initial load duke parents: diff changeset	24
7397 5b173b4ca846 6989984: Use standard include model for Hospot stefank parents: 6174 diff changeset	25	#ifndef OS_LINUX_VM_GLOBALS_LINUX_HPP
5b173b4ca846 6989984: Use standard include model for Hospot stefank parents: 6174 diff changeset	26	#define OS_LINUX_VM_GLOBALS_LINUX_HPP
5b173b4ca846 6989984: Use standard include model for Hospot stefank parents: 6174 diff changeset	27
1 489c9b5090e2 Initial load duke parents: diff changeset	28	//
489c9b5090e2 Initial load duke parents: diff changeset	29	// Defines Linux specific flags. They are not available on other platforms.
489c9b5090e2 Initial load duke parents: diff changeset	30	//
38273 2634194d7555 8073500: Prevent certain commercial flags from being changed at runtime gziemski parents: 35884 diff changeset	31	#define RUNTIME_OS_FLAGS(develop, \
2634194d7555 8073500: Prevent certain commercial flags from being changed at runtime gziemski parents: 35884 diff changeset	32	develop_pd, \
2634194d7555 8073500: Prevent certain commercial flags from being changed at runtime gziemski parents: 35884 diff changeset	33	product, \
2634194d7555 8073500: Prevent certain commercial flags from being changed at runtime gziemski parents: 35884 diff changeset	34	product_pd, \
2634194d7555 8073500: Prevent certain commercial flags from being changed at runtime gziemski parents: 35884 diff changeset	35	diagnostic, \
39117 59fa99a45873 8150900: Implement diagnostic_pd csahu parents: 38273 diff changeset	36	diagnostic_pd, \
38273 2634194d7555 8073500: Prevent certain commercial flags from being changed at runtime gziemski parents: 35884 diff changeset	37	notproduct, \
2634194d7555 8073500: Prevent certain commercial flags from being changed at runtime gziemski parents: 35884 diff changeset	38	range, \
2634194d7555 8073500: Prevent certain commercial flags from being changed at runtime gziemski parents: 35884 diff changeset	39	constraint, \
2634194d7555 8073500: Prevent certain commercial flags from being changed at runtime gziemski parents: 35884 diff changeset	40	writeable) \
31371 311143309e73 8122937: [JEP 245] Validate JVM Command-Line Flag Arguments. gziemski parents: 20400 diff changeset	41	\
9335 7bdd2a3ab3d8 7034464: Support transparent large pages on Linux iveresov parents: 7397 diff changeset	42	product(bool, UseOprofile, false, \
7bdd2a3ab3d8 7034464: Support transparent large pages on Linux iveresov parents: 7397 diff changeset	43	"enable support for Oprofile profiler") \
7bdd2a3ab3d8 7034464: Support transparent large pages on Linux iveresov parents: 7397 diff changeset	44	\
31371 311143309e73 8122937: [JEP 245] Validate JVM Command-Line Flag Arguments. gziemski parents: 20400 diff changeset	45	/* NB: The default value of UseLinuxPosixThreadCPUClocks may be */ \
311143309e73 8122937: [JEP 245] Validate JVM Command-Line Flag Arguments. gziemski parents: 20400 diff changeset	46	/* overridden in Arguments::parse_each_vm_init_arg. */ \
9335 7bdd2a3ab3d8 7034464: Support transparent large pages on Linux iveresov parents: 7397 diff changeset	47	product(bool, UseLinuxPosixThreadCPUClocks, true, \
7bdd2a3ab3d8 7034464: Support transparent large pages on Linux iveresov parents: 7397 diff changeset	48	"enable fast Linux Posix clocks where available") \
7bdd2a3ab3d8 7034464: Support transparent large pages on Linux iveresov parents: 7397 diff changeset	49	\
7bdd2a3ab3d8 7034464: Support transparent large pages on Linux iveresov parents: 7397 diff changeset	50	product(bool, UseHugeTLBFS, false, \
7bdd2a3ab3d8 7034464: Support transparent large pages on Linux iveresov parents: 7397 diff changeset	51	"Use MAP_HUGETLB for large pages") \
7bdd2a3ab3d8 7034464: Support transparent large pages on Linux iveresov parents: 7397 diff changeset	52	\
19546 f6b7c9e96ea3 8007074: SIGSEGV at ParMarkBitMap::verify_clear() stefank parents: 15926 diff changeset	53	product(bool, UseTransparentHugePages, false, \
f6b7c9e96ea3 8007074: SIGSEGV at ParMarkBitMap::verify_clear() stefank parents: 15926 diff changeset	54	"Use MADV_HUGEPAGE for large pages") \
f6b7c9e96ea3 8007074: SIGSEGV at ParMarkBitMap::verify_clear() stefank parents: 15926 diff changeset	55	\
15926 8e87d545195f 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 9419 diff changeset	56	product(bool, LoadExecStackDllInVMThread, true, \
8e87d545195f 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 9419 diff changeset	57	"Load DLLs with executable-stack attribute in the VM Thread") \
8e87d545195f 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 9419 diff changeset	58	\
9335 7bdd2a3ab3d8 7034464: Support transparent large pages on Linux iveresov parents: 7397 diff changeset	59	product(bool, UseSHM, false, \
35884 ec439aaca107 6515172: Runtime.availableProcessors() ignores Linux taskset command dholmes parents: 31371 diff changeset	60	"Use SYSV shared memory for large pages") \
ec439aaca107 6515172: Runtime.availableProcessors() ignores Linux taskset command dholmes parents: 31371 diff changeset	61	\
47903 7f22774a5f42 8146115: Improve docker container detection and resource configuration usage bobv parents: 47216 diff changeset	62	product(bool, UseContainerSupport, true, \
7f22774a5f42 8146115: Improve docker container detection and resource configuration usage bobv parents: 47216 diff changeset	63	"Enable detection and runtime container configuration support") \
7f22774a5f42 8146115: Improve docker container detection and resource configuration usage bobv parents: 47216 diff changeset	64	\
49058 15765495db12 8197589: Update CPU count algorithm when both cpu shares and quotas are used bobv parents: 47903 diff changeset	65	product(bool, PreferContainerQuotaForCPUCount, true, \
15765495db12 8197589: Update CPU count algorithm when both cpu shares and quotas are used bobv parents: 47903 diff changeset	66	"Calculate the container CPU availability based on the value" \
15765495db12 8197589: Update CPU count algorithm when both cpu shares and quotas are used bobv parents: 47903 diff changeset	67	" of quotas (if set), when true. Otherwise, use the CPU" \
15765495db12 8197589: Update CPU count algorithm when both cpu shares and quotas are used bobv parents: 47903 diff changeset	68	" shares value, provided it is less than quota.") \
15765495db12 8197589: Update CPU count algorithm when both cpu shares and quotas are used bobv parents: 47903 diff changeset	69	\
35884 ec439aaca107 6515172: Runtime.availableProcessors() ignores Linux taskset command dholmes parents: 31371 diff changeset	70	diagnostic(bool, UseCpuAllocPath, false, \
ec439aaca107 6515172: Runtime.availableProcessors() ignores Linux taskset command dholmes parents: 31371 diff changeset	71	"Use CPU_ALLOC code path in os::active_processor_count ")
1 489c9b5090e2 Initial load duke parents: diff changeset	72
489c9b5090e2 Initial load duke parents: diff changeset	73	//
489c9b5090e2 Initial load duke parents: diff changeset	74	// Defines Linux-specific default values. The flags are available on all
489c9b5090e2 Initial load duke parents: diff changeset	75	// platforms, but they may have different default values on other platforms.
489c9b5090e2 Initial load duke parents: diff changeset	76	//
20400 1c658ebcb3c1 8024838: Significant slowdown due to transparent huge pages stefank parents: 19546 diff changeset	77	define_pd_global(bool, UseLargePages, false);
1421 a7ef1a3b2644 6660681: Incrementally reserve pages on win server 2003 for better large page affinity jmasa parents: 1 diff changeset	78	define_pd_global(bool, UseLargePagesIndividualAllocation, false);
1 489c9b5090e2 Initial load duke parents: diff changeset	79	define_pd_global(bool, UseOSErrorReporting, false);
489c9b5090e2 Initial load duke parents: diff changeset	80	define_pd_global(bool, UseThreadPriorities, true) ;
7397 5b173b4ca846 6989984: Use standard include model for Hospot stefank parents: 6174 diff changeset	81
5b173b4ca846 6989984: Use standard include model for Hospot stefank parents: 6174 diff changeset	82	#endif // OS_LINUX_VM_GLOBALS_LINUX_HPP

author	serb
	Sun, 24 Jun 2018 16:35:21 -0700
changeset 50834	9cf279436b9d
parent 49058	15765495db12
child 52960	a6182c464b31
permissions	-rw-r--r--