vm_version.cpp revision 9056:dc9930a04ab0 
1/*
2 * Copyright (c) 1998, 2015, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25#include "precompiled.hpp"
26#include "code/codeCacheExtensions.hpp"
27#include "memory/universe.hpp"
28#include "oops/oop.inline.hpp"
29#include "runtime/arguments.hpp"
30#include "runtime/vm_version.hpp"
31
32const char* Abstract_VM_Version::_s_vm_release = Abstract_VM_Version::vm_release();
33const char* Abstract_VM_Version::_s_internal_vm_info_string = Abstract_VM_Version::internal_vm_info_string();
34bool Abstract_VM_Version::_supports_cx8 = false;
35bool Abstract_VM_Version::_supports_atomic_getset4 = false;
36bool Abstract_VM_Version::_supports_atomic_getset8 = false;
37bool Abstract_VM_Version::_supports_atomic_getadd4 = false;
38bool Abstract_VM_Version::_supports_atomic_getadd8 = false;
39unsigned int Abstract_VM_Version::_logical_processors_per_package = 1U;
40unsigned int Abstract_VM_Version::_L1_data_cache_line_size = 0;
41int Abstract_VM_Version::_reserve_for_allocation_prefetch = 0;
42
43#ifndef HOTSPOT_RELEASE_VERSION
44  #error HOTSPOT_RELEASE_VERSION must be defined
45#endif
46
47#ifndef JDK_MAJOR_VERSION
48  #error JDK_MAJOR_VERSION must be defined
49#endif
50#ifndef JDK_MINOR_VERSION
51  #error JDK_MINOR_VERSION must be defined
52#endif
53#ifndef JDK_MICRO_VERSION
54  #error JDK_MICRO_VERSION must be defined
55#endif
56#ifndef JDK_BUILD_NUMBER
57  #error JDK_BUILD_NUMBER must be defined
58#endif
59
60#ifndef JRE_RELEASE_VERSION
61  #error JRE_RELEASE_VERSION must be defined
62#endif
63
64// NOTE: Builds within Visual Studio do not define the build target in
65//       HOTSPOT_RELEASE_VERSION, so it must be done here
66#if defined(VISUAL_STUDIO_BUILD) && !defined(PRODUCT)
67  #ifndef HOTSPOT_BUILD_TARGET
68    #error HOTSPOT_BUILD_TARGET must be defined
69  #endif
70  #define VM_RELEASE HOTSPOT_RELEASE_VERSION "-" HOTSPOT_BUILD_TARGET
71#else
72  #define VM_RELEASE HOTSPOT_RELEASE_VERSION
73#endif
74
75// HOTSPOT_RELEASE_VERSION follows the JDK release version naming convention
76// <major_ver>.<minor_ver>.<micro_ver>[-<identifier>][-<debug_target>][-b<nn>]
77int Abstract_VM_Version::_vm_major_version = 0;
78int Abstract_VM_Version::_vm_minor_version = 0;
79int Abstract_VM_Version::_vm_micro_version = 0;
80int Abstract_VM_Version::_vm_build_number = 0;
81bool Abstract_VM_Version::_initialized = false;
82unsigned int Abstract_VM_Version::_parallel_worker_threads = 0;
83bool Abstract_VM_Version::_parallel_worker_threads_initialized = false;
84
85#ifdef ASSERT
86static void assert_digits(const char * s, const char * message) {
87  for (int i = 0; s[i] != '\0'; i++) {
88    assert(isdigit(s[i]), "%s", message);
89  }
90}
91#endif
92
93static void set_version_field(int * version_field, const char * version_str,
94                              const char * const assert_msg) {
95  if (version_str != NULL && *version_str != '\0') {
96    DEBUG_ONLY(assert_digits(version_str, assert_msg));
97    *version_field = atoi(version_str);
98  }
99}
100
101void Abstract_VM_Version::initialize() {
102  if (_initialized) {
103    return;
104  }
105
106  set_version_field(&_vm_major_version, JDK_MAJOR_VERSION, "bad major version");
107  set_version_field(&_vm_minor_version, JDK_MINOR_VERSION, "bad minor version");
108  set_version_field(&_vm_micro_version, JDK_MICRO_VERSION, "bad micro version");
109  int offset = (JDK_BUILD_NUMBER != NULL && JDK_BUILD_NUMBER[0] == 'b') ? 1 : 0;
110  set_version_field(&_vm_build_number, &JDK_BUILD_NUMBER[offset],
111                    "bad build number");
112
113  _initialized = true;
114}
115
116#if defined(_LP64)
117  #define VMLP "64-Bit "
118#else
119  #define VMLP ""
120#endif
121
122#ifndef VMTYPE
123  #ifdef TIERED
124    #define VMTYPE "Server"
125  #else // TIERED
126  #ifdef ZERO
127  #ifdef SHARK
128    #define VMTYPE "Shark"
129  #else // SHARK
130    #define VMTYPE "Zero"
131  #endif // SHARK
132  #else // ZERO
133     #define VMTYPE COMPILER1_PRESENT("Client")   \
134                    COMPILER2_PRESENT("Server")
135  #endif // ZERO
136  #endif // TIERED
137#endif
138
139#ifndef HOTSPOT_VM_DISTRO
140  #error HOTSPOT_VM_DISTRO must be defined
141#endif
142#define VMNAME HOTSPOT_VM_DISTRO " " VMLP EMBEDDED_ONLY("Embedded ") VMTYPE " VM"
143
144const char* Abstract_VM_Version::vm_name() {
145  return VMNAME;
146}
147
148
149const char* Abstract_VM_Version::vm_vendor() {
150#ifdef VENDOR
151  return XSTR(VENDOR);
152#else
153  return "Oracle Corporation";
154#endif
155}
156
157const char* Abstract_VM_Version::vm_info_string() {
158  if (CodeCacheExtensions::use_pregenerated_interpreter()) {
159    return "interpreted mode, pregenerated";
160  }
161  switch (Arguments::mode()) {
162    case Arguments::_int:
163      return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode";
164    case Arguments::_mixed:
165      return UseSharedSpaces ? "mixed mode, sharing"       :  "mixed mode";
166    case Arguments::_comp:
167      return UseSharedSpaces ? "compiled mode, sharing"    : "compiled mode";
168  };
169  ShouldNotReachHere();
170  return "";
171}
172
173// NOTE: do *not* use stringStream. this function is called by
174//       fatal error handler. if the crash is in native thread,
175//       stringStream cannot get resource allocated and will SEGV.
176const char* Abstract_VM_Version::vm_release() {
177  return VM_RELEASE;
178}
179
180// NOTE: do *not* use stringStream. this function is called by
181//       fatal error handlers. if the crash is in native thread,
182//       stringStream cannot get resource allocated and will SEGV.
183const char* Abstract_VM_Version::jre_release_version() {
184  return JRE_RELEASE_VERSION;
185}
186
187#define OS       LINUX_ONLY("linux")             \
188                 WINDOWS_ONLY("windows")         \
189                 SOLARIS_ONLY("solaris")         \
190                 AIX_ONLY("aix")                 \
191                 BSD_ONLY("bsd")
192
193#ifndef CPU
194#ifdef ZERO
195#define CPU      ZERO_LIBARCH
196#else
197#define CPU      IA32_ONLY("x86")                \
198                 IA64_ONLY("ia64")               \
199                 AMD64_ONLY("amd64")             \
200                 PPC64_ONLY("ppc64")             \
201                 AARCH64_ONLY("aarch64")         \
202                 SPARC_ONLY("sparc")
203#endif // ZERO
204#endif
205
206const char *Abstract_VM_Version::vm_platform_string() {
207  return OS "-" CPU;
208}
209
210const char* Abstract_VM_Version::internal_vm_info_string() {
211  #ifndef HOTSPOT_BUILD_USER
212    #define HOTSPOT_BUILD_USER unknown
213  #endif
214
215  #ifndef HOTSPOT_BUILD_COMPILER
216    #ifdef _MSC_VER
217      #if _MSC_VER == 1600
218        #define HOTSPOT_BUILD_COMPILER "MS VC++ 10.0 (VS2010)"
219      #elif _MSC_VER == 1700
220        #define HOTSPOT_BUILD_COMPILER "MS VC++ 11.0 (VS2012)"
221      #elif _MSC_VER == 1800
222        #define HOTSPOT_BUILD_COMPILER "MS VC++ 12.0 (VS2013)"
223      #else
224        #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER)
225      #endif
226    #elif defined(__SUNPRO_CC)
227      #if   __SUNPRO_CC == 0x420
228        #define HOTSPOT_BUILD_COMPILER "Workshop 4.2"
229      #elif __SUNPRO_CC == 0x500
230        #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT)
231      #elif __SUNPRO_CC == 0x520
232        #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT)
233      #elif __SUNPRO_CC == 0x580
234        #define HOTSPOT_BUILD_COMPILER "Workshop 5.8"
235      #elif __SUNPRO_CC == 0x590
236        #define HOTSPOT_BUILD_COMPILER "Workshop 5.9"
237      #elif __SUNPRO_CC == 0x5100
238        #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1"
239      #elif __SUNPRO_CC == 0x5120
240        #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u3"
241      #else
242        #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC)
243      #endif
244    #elif defined(__GNUC__)
245        #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__
246    #elif defined(__IBMCPP__)
247        #define HOTSPOT_BUILD_COMPILER "xlC " XSTR(__IBMCPP__)
248
249    #else
250      #define HOTSPOT_BUILD_COMPILER "unknown compiler"
251    #endif
252  #endif
253
254  #ifndef FLOAT_ARCH
255    #if defined(__SOFTFP__)
256      #define FLOAT_ARCH_STR "-sflt"
257    #else
258      #define FLOAT_ARCH_STR ""
259    #endif
260  #else
261    #define FLOAT_ARCH_STR XSTR(FLOAT_ARCH)
262  #endif
263
264  return VMNAME " (" VM_RELEASE ") for " OS "-" CPU FLOAT_ARCH_STR
265         " JRE (" JRE_RELEASE_VERSION "), built on " __DATE__ " " __TIME__
266         " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER;
267}
268
269const char *Abstract_VM_Version::vm_build_user() {
270  return HOTSPOT_BUILD_USER;
271}
272
273unsigned int Abstract_VM_Version::jvm_version() {
274  return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) |
275         ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) |
276         ((Abstract_VM_Version::vm_micro_version() & 0xFF) << 8) |
277         (Abstract_VM_Version::vm_build_number() & 0xFF);
278}
279
280
281void VM_Version_init() {
282  VM_Version::initialize();
283
284#ifndef PRODUCT
285  if (PrintMiscellaneous && Verbose) {
286    char buf[512];
287    os::print_cpu_info(tty, buf, sizeof(buf));
288  }
289#endif
290}
291
292unsigned int Abstract_VM_Version::nof_parallel_worker_threads(
293                                                      unsigned int num,
294                                                      unsigned int den,
295                                                      unsigned int switch_pt) {
296  if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
297    assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0");
298    // For very large machines, there are diminishing returns
299    // for large numbers of worker threads.  Instead of
300    // hogging the whole system, use a fraction of the workers for every
301    // processor after the first 8.  For example, on a 72 cpu machine
302    // and a chosen fraction of 5/8
303    // use 8 + (72 - 8) * (5/8) == 48 worker threads.
304    unsigned int ncpus = (unsigned int) os::active_processor_count();
305    return (ncpus <= switch_pt) ?
306           ncpus :
307          (switch_pt + ((ncpus - switch_pt) * num) / den);
308  } else {
309    return ParallelGCThreads;
310  }
311}
312
313unsigned int Abstract_VM_Version::calc_parallel_worker_threads() {
314  return nof_parallel_worker_threads(5, 8, 8);
315}
316
317
318// Does not set the _initialized flag since it is
319// a global flag.
320unsigned int Abstract_VM_Version::parallel_worker_threads() {
321  if (!_parallel_worker_threads_initialized) {
322    if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
323      _parallel_worker_threads = VM_Version::calc_parallel_worker_threads();
324    } else {
325      _parallel_worker_threads = ParallelGCThreads;
326    }
327    _parallel_worker_threads_initialized = true;
328  }
329  return _parallel_worker_threads;
330}
331