Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/vm_version.hpp @ 23831:d2dd79a4fd69
8133023: ParallelGCThreads is not calculated correctly
Reviewed-by: kbarrett, tschatzl
author | poonam |
---|---|
date | Tue, 15 Mar 2016 17:39:56 -0700 |
parents | a7c52c776c30 |
children | f13e777eb255 |
rev | line source |
---|---|
0 | 1 /* |
17467
55fb97c4c58d
8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
mikael
parents:
12297
diff
changeset
|
2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
196
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
196
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
196
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_VM_VERSION_HPP |
26 #define SHARE_VM_RUNTIME_VM_VERSION_HPP | |
27 | |
28 #include "memory/allocation.hpp" | |
29 #include "utilities/ostream.hpp" | |
30 | |
0 | 31 // VM_Version provides information about the VM. |
32 | |
33 class Abstract_VM_Version: AllStatic { | |
34 protected: | |
35 friend class VMStructs; | |
36 static const char* _s_vm_release; | |
37 static const char* _s_internal_vm_info_string; | |
38 // These are set by machine-dependent initializations | |
39 static bool _supports_cx8; | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
4890
diff
changeset
|
40 static bool _supports_atomic_getset4; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
4890
diff
changeset
|
41 static bool _supports_atomic_getset8; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
4890
diff
changeset
|
42 static bool _supports_atomic_getadd4; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
4890
diff
changeset
|
43 static bool _supports_atomic_getadd8; |
0 | 44 static unsigned int _logical_processors_per_package; |
45 static int _vm_major_version; | |
46 static int _vm_minor_version; | |
47 static int _vm_build_number; | |
48 static bool _initialized; | |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
49 static int _parallel_worker_threads; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
50 static bool _parallel_worker_threads_initialized; |
3854 | 51 static int _reserve_for_allocation_prefetch; |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
52 |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
53 static unsigned int nof_parallel_worker_threads(unsigned int num, |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
54 unsigned int dem, |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
55 unsigned int switch_pt); |
0 | 56 public: |
23831
d2dd79a4fd69
8133023: ParallelGCThreads is not calculated correctly
poonam
parents:
23179
diff
changeset
|
57 // Called as part of the runtime services initialization which is |
d2dd79a4fd69
8133023: ParallelGCThreads is not calculated correctly
poonam
parents:
23179
diff
changeset
|
58 // called from the management module initialization (via init_globals()) |
d2dd79a4fd69
8133023: ParallelGCThreads is not calculated correctly
poonam
parents:
23179
diff
changeset
|
59 // after argument parsing and attaching of the main thread has |
d2dd79a4fd69
8133023: ParallelGCThreads is not calculated correctly
poonam
parents:
23179
diff
changeset
|
60 // occurred. Examines a variety of the hardware capabilities of |
d2dd79a4fd69
8133023: ParallelGCThreads is not calculated correctly
poonam
parents:
23179
diff
changeset
|
61 // the platform to determine which features can be used to execute the |
d2dd79a4fd69
8133023: ParallelGCThreads is not calculated correctly
poonam
parents:
23179
diff
changeset
|
62 // program. |
0 | 63 static void initialize(); |
64 | |
23179
a7c52c776c30
8080776: ARM 32 bit binaries do not run on 64 bit ARM v8 hardware
bpittore
parents:
17467
diff
changeset
|
65 // This allows for early initialization of VM_Version information |
a7c52c776c30
8080776: ARM 32 bit binaries do not run on 64 bit ARM v8 hardware
bpittore
parents:
17467
diff
changeset
|
66 // that may be needed later in the initialization sequence but before |
a7c52c776c30
8080776: ARM 32 bit binaries do not run on 64 bit ARM v8 hardware
bpittore
parents:
17467
diff
changeset
|
67 // full VM_Version initialization is possible. It can not depend on any |
a7c52c776c30
8080776: ARM 32 bit binaries do not run on 64 bit ARM v8 hardware
bpittore
parents:
17467
diff
changeset
|
68 // other part of the VM being initialized when called. Platforms that |
a7c52c776c30
8080776: ARM 32 bit binaries do not run on 64 bit ARM v8 hardware
bpittore
parents:
17467
diff
changeset
|
69 // need to specialize this define VM_Version::early_initialize(). |
a7c52c776c30
8080776: ARM 32 bit binaries do not run on 64 bit ARM v8 hardware
bpittore
parents:
17467
diff
changeset
|
70 static void early_initialize() { } |
a7c52c776c30
8080776: ARM 32 bit binaries do not run on 64 bit ARM v8 hardware
bpittore
parents:
17467
diff
changeset
|
71 |
23831
d2dd79a4fd69
8133023: ParallelGCThreads is not calculated correctly
poonam
parents:
23179
diff
changeset
|
72 // Called to initialize VM variables needing initialization |
d2dd79a4fd69
8133023: ParallelGCThreads is not calculated correctly
poonam
parents:
23179
diff
changeset
|
73 // after command line parsing. Platforms that need to specialize |
d2dd79a4fd69
8133023: ParallelGCThreads is not calculated correctly
poonam
parents:
23179
diff
changeset
|
74 // this should define VM_Version::init_before_ergo(). |
d2dd79a4fd69
8133023: ParallelGCThreads is not calculated correctly
poonam
parents:
23179
diff
changeset
|
75 static void init_before_ergo() {} |
d2dd79a4fd69
8133023: ParallelGCThreads is not calculated correctly
poonam
parents:
23179
diff
changeset
|
76 |
0 | 77 // Name |
78 static const char* vm_name(); | |
79 // Vendor | |
80 static const char* vm_vendor(); | |
81 // VM version information string printed by launcher (java -version) | |
82 static const char* vm_info_string(); | |
83 static const char* vm_release(); | |
84 static const char* vm_platform_string(); | |
2199
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
1972
diff
changeset
|
85 static const char* vm_build_user(); |
0 | 86 |
87 static int vm_major_version() { assert(_initialized, "not initialized"); return _vm_major_version; } | |
88 static int vm_minor_version() { assert(_initialized, "not initialized"); return _vm_minor_version; } | |
89 static int vm_build_number() { assert(_initialized, "not initialized"); return _vm_build_number; } | |
90 | |
91 // Gets the jvm_version_info.jvm_version defined in jvm.h | |
92 static unsigned int jvm_version(); | |
93 | |
94 // Internal version providing additional build information | |
95 static const char* internal_vm_info_string(); | |
4890
c77d473e71f7
7132779: build-infra merge: Enable ccache to work for most developer builds.
ohrstrom
parents:
3854
diff
changeset
|
96 static const char* jre_release_version(); |
0 | 97 |
98 // does HW support an 8-byte compare-exchange operation? | |
12297
586fa1919a89
8014911: Should use SUPPORTS_NATIVE_CX8 define to help C/C++ compiler elide blocks of code
bpittore
parents:
6842
diff
changeset
|
99 static bool supports_cx8() { |
586fa1919a89
8014911: Should use SUPPORTS_NATIVE_CX8 define to help C/C++ compiler elide blocks of code
bpittore
parents:
6842
diff
changeset
|
100 #ifdef SUPPORTS_NATIVE_CX8 |
586fa1919a89
8014911: Should use SUPPORTS_NATIVE_CX8 define to help C/C++ compiler elide blocks of code
bpittore
parents:
6842
diff
changeset
|
101 return true; |
586fa1919a89
8014911: Should use SUPPORTS_NATIVE_CX8 define to help C/C++ compiler elide blocks of code
bpittore
parents:
6842
diff
changeset
|
102 #else |
586fa1919a89
8014911: Should use SUPPORTS_NATIVE_CX8 define to help C/C++ compiler elide blocks of code
bpittore
parents:
6842
diff
changeset
|
103 return _supports_cx8; |
586fa1919a89
8014911: Should use SUPPORTS_NATIVE_CX8 define to help C/C++ compiler elide blocks of code
bpittore
parents:
6842
diff
changeset
|
104 #endif |
586fa1919a89
8014911: Should use SUPPORTS_NATIVE_CX8 define to help C/C++ compiler elide blocks of code
bpittore
parents:
6842
diff
changeset
|
105 } |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
4890
diff
changeset
|
106 // does HW support atomic get-and-set or atomic get-and-add? Used |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
4890
diff
changeset
|
107 // to guide intrinsification decisions for Unsafe atomic ops |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
4890
diff
changeset
|
108 static bool supports_atomic_getset4() {return _supports_atomic_getset4;} |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
4890
diff
changeset
|
109 static bool supports_atomic_getset8() {return _supports_atomic_getset8;} |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
4890
diff
changeset
|
110 static bool supports_atomic_getadd4() {return _supports_atomic_getadd4;} |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
4890
diff
changeset
|
111 static bool supports_atomic_getadd8() {return _supports_atomic_getadd8;} |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
4890
diff
changeset
|
112 |
0 | 113 static unsigned int logical_processors_per_package() { |
114 return _logical_processors_per_package; | |
115 } | |
116 | |
3854 | 117 // Need a space at the end of TLAB for prefetch instructions |
118 // which may fault when accessing memory outside of heap. | |
119 static int reserve_for_allocation_prefetch() { | |
120 return _reserve_for_allocation_prefetch; | |
121 } | |
122 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
123 // ARCH specific policy for the BiasedLocking |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
124 static bool use_biased_locking() { return true; } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1552
diff
changeset
|
125 |
0 | 126 // Number of page sizes efficiently supported by the hardware. Most chips now |
127 // support two sizes, thus this default implementation. Processor-specific | |
128 // subclasses should define new versions to hide this one as needed. Note | |
129 // that the O/S may support more sizes, but at most this many are used. | |
130 static uint page_size_count() { return 2; } | |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
131 |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
132 // Returns the number of parallel threads to be used for VM |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
133 // work. If that number has not been calculated, do so and |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
134 // save it. Returns ParallelGCThreads if it is set on the |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
135 // command line. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
136 static unsigned int parallel_worker_threads(); |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
137 // Calculates and returns the number of parallel threads. May |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
138 // be VM version specific. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
139 static unsigned int calc_parallel_worker_threads(); |
0 | 140 }; |
1972 | 141 |
142 #endif // SHARE_VM_RUNTIME_VM_VERSION_HPP |