Mercurial > hg > truffle
annotate src/share/vm/utilities/globalDefinitions_gcc.hpp @ 8733:9def4075da6d
8008079: G1: Add nextObject routine to CMBitMapRO and replace nextWord
Summary: Update the task local finger to the start of the next object when marking aborts, in order to avoid the redundant scanning of all 0's when the marking task restarts, if otherwise updating to the next word. In addition, reuse the routine nextObject() in routine iterate().
Reviewed-by: johnc, ysr
Contributed-by: tamao <tao.mao@oracle.com>
| author | tamao |
|---|---|
| date | Tue, 05 Mar 2013 15:36:56 -0800 |
| parents | 203f64878aab |
| children | fa6d364024c2 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1998, 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP |
| 26 #define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP | |
| 27 | |
| 28 #include "prims/jni.h" | |
| 29 | |
| 0 | 30 // This file holds compiler-dependent includes, |
| 31 // globally used constants & types, class (forward) | |
| 32 // declarations and a few frequently used utility functions. | |
| 33 | |
| 34 #include <ctype.h> | |
| 35 #include <string.h> | |
| 36 #include <stdarg.h> | |
| 37 #include <stddef.h> | |
| 38 #include <stdio.h> | |
| 39 #include <stdlib.h> | |
| 40 #include <wchar.h> | |
| 41 | |
| 42 #ifdef SOLARIS | |
| 43 #include <ieeefp.h> | |
| 44 #endif // SOLARIS | |
| 45 | |
| 46 #include <math.h> | |
| 47 #ifndef FP_PZERO | |
| 48 // Linux doesn't have positive/negative zero | |
| 49 #define FP_PZERO FP_ZERO | |
| 50 #endif | |
| 51 #if (!defined fpclass) && ((!defined SPARC) || (!defined SOLARIS)) | |
| 52 #define fpclass fpclassify | |
| 53 #endif | |
| 54 | |
| 55 #include <time.h> | |
| 56 #include <fcntl.h> | |
| 57 #include <dlfcn.h> | |
| 58 #include <pthread.h> | |
| 59 | |
| 60 #ifdef SOLARIS | |
| 61 #include <thread.h> | |
| 62 #endif // SOLARIS | |
| 63 | |
| 64 #include <limits.h> | |
| 65 #include <errno.h> | |
| 66 | |
| 67 #ifdef SOLARIS | |
| 68 #include <sys/trap.h> | |
| 69 #include <sys/regset.h> | |
| 70 #include <sys/procset.h> | |
| 71 #include <ucontext.h> | |
| 72 #include <setjmp.h> | |
| 73 #endif // SOLARIS | |
| 74 | |
| 75 # ifdef SOLARIS_MUTATOR_LIBTHREAD | |
| 76 # include <sys/procfs.h> | |
| 77 # endif | |
| 78 | |
| 3960 | 79 #if defined(LINUX) || defined(_ALLBSD_SOURCE) |
| 2447 | 80 #ifndef __STDC_LIMIT_MACROS |
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81 #define __STDC_LIMIT_MACROS |
| 2447 | 82 #endif // __STDC_LIMIT_MACROS |
| 0 | 83 #include <inttypes.h> |
| 84 #include <signal.h> | |
| 3960 | 85 #ifndef __OpenBSD__ |
| 0 | 86 #include <ucontext.h> |
| 3960 | 87 #endif |
| 88 #ifdef __APPLE__ | |
| 89 #include <AvailabilityMacros.h> | |
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90 #include <mach/mach.h> |
| 3960 | 91 #endif |
| 0 | 92 #include <sys/time.h> |
| 3960 | 93 #endif // LINUX || _ALLBSD_SOURCE |
| 0 | 94 |
| 95 // 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures | |
| 96 // When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in | |
| 97 // system header files. On 32-bit architectures, there is no problem. | |
| 98 // On 64-bit architectures, defining NULL as a 32-bit constant can cause | |
| 99 // problems with varargs functions: C++ integral promotion rules say for | |
| 100 // varargs, we pass the argument 0 as an int. So, if NULL was passed to a | |
| 101 // varargs function it will remain 32-bits. Depending on the calling | |
| 102 // convention of the machine, if the argument is passed on the stack then | |
| 103 // only 32-bits of the "NULL" pointer may be initialized to zero. The | |
| 104 // other 32-bits will be garbage. If the varargs function is expecting a | |
| 105 // pointer when it extracts the argument, then we have a problem. | |
| 106 // | |
| 107 // Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0. | |
| 108 // | |
| 109 // Note: this fix doesn't work well on Linux because NULL will be overwritten | |
| 110 // whenever a system header file is included. Linux handles NULL correctly | |
| 111 // through a special type '__null'. | |
| 112 #ifdef SOLARIS | |
| 113 #ifdef _LP64 | |
| 114 #undef NULL | |
| 115 #define NULL 0L | |
| 116 #else | |
| 117 #ifndef NULL | |
| 118 #define NULL 0 | |
| 119 #endif | |
| 120 #endif | |
| 121 #endif | |
| 122 | |
| 123 // NULL vs NULL_WORD: | |
| 124 // On Linux NULL is defined as a special type '__null'. Assigning __null to | |
| 125 // integer variable will cause gcc warning. Use NULL_WORD in places where a | |
| 126 // pointer is stored as integer value. On some platforms, sizeof(intptr_t) > | |
| 127 // sizeof(void*), so here we want something which is integer type, but has the | |
| 128 // same size as a pointer. | |
| 3960 | 129 #ifdef __GNUC__ |
| 0 | 130 #ifdef _LP64 |
| 131 #define NULL_WORD 0L | |
| 132 #else | |
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133 // Cast 0 to intptr_t rather than int32_t since they are not the same type |
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134 // on platforms such as Mac OS X. |
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135 #define NULL_WORD ((intptr_t)0) |
| 0 | 136 #endif |
| 137 #else | |
| 138 #define NULL_WORD NULL | |
| 139 #endif | |
| 140 | |
| 3960 | 141 #if !defined(LINUX) && !defined(_ALLBSD_SOURCE) |
| 0 | 142 // Compiler-specific primitive types |
| 143 typedef unsigned short uint16_t; | |
| 144 #ifndef _UINT32_T | |
| 145 #define _UINT32_T | |
| 146 typedef unsigned int uint32_t; | |
| 147 #endif // _UINT32_T | |
| 148 | |
| 149 #if !defined(_SYS_INT_TYPES_H) | |
| 150 #ifndef _UINT64_T | |
| 151 #define _UINT64_T | |
| 152 typedef unsigned long long uint64_t; | |
| 153 #endif // _UINT64_T | |
| 154 // %%%% how to access definition of intptr_t portably in 5.5 onward? | |
| 155 typedef int intptr_t; | |
| 156 typedef unsigned int uintptr_t; | |
| 157 // If this gets an error, figure out a symbol XXX that implies the | |
| 158 // prior definition of intptr_t, and add "&& !defined(XXX)" above. | |
| 159 #endif // _SYS_INT_TYPES_H | |
| 160 | |
| 3960 | 161 #endif // !LINUX && !_ALLBSD_SOURCE |
| 0 | 162 |
| 163 // Additional Java basic types | |
| 164 | |
| 165 typedef uint8_t jubyte; | |
| 166 typedef uint16_t jushort; | |
| 167 typedef uint32_t juint; | |
| 168 typedef uint64_t julong; | |
| 169 | |
| 170 //---------------------------------------------------------------------------------------------------- | |
| 171 // Special (possibly not-portable) casts | |
| 172 // Cast floats into same-size integers and vice-versa w/o changing bit-pattern | |
| 173 // %%%%%% These seem like standard C++ to me--how about factoring them out? - Ungar | |
| 174 | |
| 175 inline jint jint_cast (jfloat x) { return *(jint* )&x; } | |
| 176 inline jlong jlong_cast (jdouble x) { return *(jlong* )&x; } | |
| 177 | |
| 178 inline jfloat jfloat_cast (jint x) { return *(jfloat* )&x; } | |
| 179 inline jdouble jdouble_cast(jlong x) { return *(jdouble*)&x; } | |
| 180 | |
| 181 //---------------------------------------------------------------------------------------------------- | |
| 182 // Constant for jlong (specifying an long long canstant is C++ compiler specific) | |
| 183 | |
| 184 // Build a 64bit integer constant | |
| 185 #define CONST64(x) (x ## LL) | |
| 186 #define UCONST64(x) (x ## ULL) | |
| 187 | |
| 188 const jlong min_jlong = CONST64(0x8000000000000000); | |
| 189 const jlong max_jlong = CONST64(0x7fffffffffffffff); | |
| 190 | |
| 191 | |
| 192 #ifdef SOLARIS | |
| 193 //---------------------------------------------------------------------------------------------------- | |
| 194 // ANSI C++ fixes | |
| 195 // NOTE:In the ANSI committee's continuing attempt to make each version | |
| 196 // of C++ incompatible with the previous version, you can no longer cast | |
| 197 // pointers to functions without specifying linkage unless you want to get | |
| 198 // warnings. | |
| 199 // | |
| 200 // This also means that pointers to functions can no longer be "hidden" | |
| 201 // in opaque types like void * because at the invokation point warnings | |
| 202 // will be generated. While this makes perfect sense from a type safety | |
| 203 // point of view it causes a lot of warnings on old code using C header | |
| 204 // files. Here are some typedefs to make the job of silencing warnings | |
| 205 // a bit easier. | |
| 206 // | |
| 207 // The final kick in the teeth is that you can only have extern "C" linkage | |
| 208 // specified at file scope. So these typedefs are here rather than in the | |
| 209 // .hpp for the class (os:Solaris usually) that needs them. | |
| 210 | |
| 211 extern "C" { | |
| 212 typedef int (*int_fnP_thread_t_iP_uP_stack_tP_gregset_t)(thread_t, int*, unsigned *, stack_t*, gregset_t); | |
| 213 typedef int (*int_fnP_thread_t_i_gregset_t)(thread_t, int, gregset_t); | |
| 214 typedef int (*int_fnP_thread_t_i)(thread_t, int); | |
| 215 typedef int (*int_fnP_thread_t)(thread_t); | |
| 216 | |
| 217 typedef int (*int_fnP_cond_tP_mutex_tP_timestruc_tP)(cond_t *cv, mutex_t *mx, timestruc_t *abst); | |
| 218 typedef int (*int_fnP_cond_tP_mutex_tP)(cond_t *cv, mutex_t *mx); | |
| 219 | |
| 220 // typedef for missing API in libc | |
| 221 typedef int (*int_fnP_mutex_tP_i_vP)(mutex_t *, int, void *); | |
| 222 typedef int (*int_fnP_mutex_tP)(mutex_t *); | |
| 223 typedef int (*int_fnP_cond_tP_i_vP)(cond_t *cv, int scope, void *arg); | |
| 224 typedef int (*int_fnP_cond_tP)(cond_t *cv); | |
| 225 }; | |
| 226 #endif // SOLARIS | |
| 227 | |
| 228 //---------------------------------------------------------------------------------------------------- | |
| 229 // Debugging | |
| 230 | |
| 231 #define DEBUG_EXCEPTION ::abort(); | |
| 232 | |
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233 #ifdef ARM |
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234 #ifdef SOLARIS |
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235 #define BREAKPOINT __asm__ volatile (".long 0xe1200070") |
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236 #else |
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237 #define BREAKPOINT __asm__ volatile (".long 0xe7f001f0") |
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238 #endif |
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239 #else |
| 0 | 240 extern "C" void breakpoint(); |
| 241 #define BREAKPOINT ::breakpoint() | |
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242 #endif |
| 0 | 243 |
| 244 // checking for nanness | |
| 245 #ifdef SOLARIS | |
| 246 #ifdef SPARC | |
| 247 inline int g_isnan(float f) { return isnanf(f); } | |
| 248 #else | |
| 249 // isnanf() broken on Intel Solaris use isnand() | |
| 250 inline int g_isnan(float f) { return isnand(f); } | |
| 251 #endif | |
| 252 inline int g_isnan(double f) { return isnand(f); } | |
| 3960 | 253 #elif defined(__APPLE__) |
| 254 inline int g_isnan(double f) { return isnan(f); } | |
| 255 #elif defined(LINUX) || defined(_ALLBSD_SOURCE) | |
| 0 | 256 inline int g_isnan(float f) { return isnanf(f); } |
| 257 inline int g_isnan(double f) { return isnan(f); } | |
| 258 #else | |
| 259 #error "missing platform-specific definition here" | |
| 260 #endif | |
| 261 | |
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262 // GCC 4.3 does not allow 0.0/0.0 to produce a NAN value |
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263 #if (__GNUC__ == 4) && (__GNUC_MINOR__ > 2) |
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264 #define CAN_USE_NAN_DEFINE 1 |
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265 #endif |
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266 |
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267 |
| 0 | 268 // Checking for finiteness |
| 269 | |
| 270 inline int g_isfinite(jfloat f) { return finite(f); } | |
| 271 inline int g_isfinite(jdouble f) { return finite(f); } | |
| 272 | |
| 273 | |
| 274 // Wide characters | |
| 275 | |
| 276 inline int wcslen(const jchar* x) { return wcslen((const wchar_t*)x); } | |
| 277 | |
| 278 | |
| 279 // Portability macros | |
| 280 #define PRAGMA_INTERFACE #pragma interface | |
| 281 #define PRAGMA_IMPLEMENTATION #pragma implementation | |
| 282 #define VALUE_OBJ_CLASS_SPEC | |
| 283 | |
| 284 #if (__GNUC__ == 2) && (__GNUC_MINOR__ < 95) | |
| 285 #define TEMPLATE_TABLE_BUG | |
| 286 #endif | |
| 287 #if (__GNUC__ == 2) && (__GNUC_MINOR__ >= 96) | |
| 288 #define CONST_SDM_BUG | |
| 289 #endif | |
| 290 | |
| 291 // Formatting. | |
| 292 #ifdef _LP64 | |
| 293 #define FORMAT64_MODIFIER "l" | |
| 294 #else // !_LP64 | |
| 295 #define FORMAT64_MODIFIER "ll" | |
| 296 #endif // _LP64 | |
| 297 | |
| 298 // HACK: gcc warns about applying offsetof() to non-POD object or calculating | |
| 299 // offset directly when base address is NULL. Use 16 to get around the | |
| 300 // warning. gcc-3.4 has an option -Wno-invalid-offsetof to suppress | |
| 301 // this warning. | |
| 302 #define offset_of(klass,field) (size_t)((intx)&(((klass*)16)->field) - 16) | |
| 303 | |
| 304 #ifdef offsetof | |
| 305 # undef offsetof | |
| 306 #endif | |
| 307 #define offsetof(klass,field) offset_of(klass,field) | |
| 1972 | 308 |
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309 #if defined(_LP64) && defined(__APPLE__) |
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310 #define JLONG_FORMAT "%ld" |
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311 #endif // _LP64 && __APPLE__ |
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312 |
| 1972 | 313 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_GCC_HPP |