Mercurial > hg > truffle
annotate src/share/vm/libadt/port.hpp @ 20543:e7d0505c8a30
8059758: Footprint regressions with JDK-8038423
Summary: Changes in JDK-8038423 always initialize (zero out) virtual memory used for auxiliary data structures. This causes a footprint regression for G1 in startup benchmarks. This is because they do not touch that memory at all, so the operating system does not actually commit these pages. The fix is to, if the initialization value of the data structures matches the default value of just committed memory (=0), do not do anything.
Reviewed-by: jwilhelm, brutisso
| author | tschatzl |
|---|---|
| date | Fri, 10 Oct 2014 15:51:58 +0200 |
| parents | 2b8e28fdf503 |
| children | 4ca6dc0799b6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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8021954: VM SIGSEGV during classloading on MacOS; hs_err_pid file produced
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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 * | |
|
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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_LIBADT_PORT_HPP |
| 26 #define SHARE_VM_LIBADT_PORT_HPP | |
| 27 | |
| 28 #include "utilities/top.hpp" | |
| 29 | |
| 0 | 30 // Typedefs for portable compiling |
| 31 | |
| 32 #if defined(__GNUC__) | |
| 33 | |
| 34 #define INTERFACE #pragma interface | |
| 35 #define IMPLEMENTATION #pragma implementation | |
| 36 //INTERFACE | |
| 37 #include <stddef.h> | |
| 38 #include <stdlib.h> | |
| 39 #include <string.h> | |
| 40 | |
| 41 // Access to the C++ class virtual function pointer | |
| 42 // Put the class in the macro | |
| 43 typedef void *VPTR; | |
| 44 // G++ puts it at the end of the base class | |
| 45 #define ACCESS_VPTR(class) VPTR&vptr(){return*(VPTR*)((char*)this+sizeof(class)-sizeof(void*));} | |
| 46 | |
| 47 #elif defined(__TURBOC__) | |
| 48 | |
| 49 #include <mem.h> | |
| 50 #include <string.h> | |
| 51 extern "C" int stricmp(const char *, const char *); | |
| 52 inline void bcopy(const void *s, void *d, int l) { memmove(d,s,l); } | |
| 53 inline void bzero(void *p, int l) { memset(p,0,l); } | |
| 54 inline int bcmp(const void *s, const void *d, int l) { return memcmp(s,d,l); } | |
| 55 inline int min( int a, int b) { return a < b ? a : b; } | |
| 56 inline int max( int a, int b) { return a > b ? a : b; } | |
| 57 //strcasecmp moved to globalDefinitions_visCPP.hpp | |
| 58 //inline int strcasecmp(const char *s1, const char *s2) { return stricmp(s1,s2); } | |
| 59 inline long abs( long x ) { return x < 0 ? -x : x; } | |
| 60 // Access to the C++ class virtual function pointer | |
| 61 // Put the class in the macro | |
| 62 typedef void near *VPTR; | |
| 63 // BorlandC puts it up front | |
| 64 #define ACCESS_VPTR(class) VPTR&vptr(){return*(VPTR*)this;} | |
| 65 | |
| 66 #elif defined(__hpux) | |
| 67 | |
| 68 #define INTERFACE | |
| 69 #define IMPLEMENTATION | |
| 70 #define signed | |
| 71 #include <strings.h> | |
| 72 #include <stdlib.h> | |
| 73 inline long min( long a, long b) { return a < b ? a : b; } | |
| 74 inline long max( long a, long b) { return a > b ? a : b; } | |
| 75 inline int min( int a, int b) { return a < b ? a : b; } | |
| 76 inline int max( int a, int b) { return a > b ? a : b; } | |
| 77 inline long abs( long x ) { return x < 0 ? -x : x; } | |
| 78 | |
| 79 #elif defined(__MOTO__) | |
| 80 // Motorola's mcc | |
| 81 #define INTERFACE | |
| 82 #define IMPLEMENTATION | |
| 83 #include <stdlib.h> | |
| 84 #include <memory.h> | |
| 85 inline int min( int a, int b) { return a < b ? a : b; } | |
| 86 inline int max( int a, int b) { return a > b ? a : b; } | |
| 87 | |
| 88 #elif defined(_AIX) | |
| 89 // IBM's xlC compiler | |
| 90 #define INTERFACE | |
| 91 #define IMPLEMENTATION | |
| 92 #include <stdlib.h> | |
| 93 #include <memory.h> | |
| 94 | |
| 95 #elif defined(_MSC_VER) | |
| 96 // Microsoft Visual C++ | |
| 97 //#define INTERFACE | |
| 98 #define IMPLEMENTATION | |
| 99 #include <stdlib.h> | |
| 100 #undef small | |
| 101 //strcasecmp moved to globalDefinitions_visCPP.hpp | |
| 102 //inline int strcasecmp(const char *s1, const char *s2) { return stricmp(s1,s2); } | |
| 103 | |
| 104 | |
| 105 #elif defined(SPARC_WORKS) | |
| 106 | |
| 107 #define INTERFACE | |
| 108 #define IMPLEMENTATION | |
| 109 | |
| 110 #include <stddef.h> | |
| 111 #include <stdlib.h> | |
| 112 #include <string.h> | |
| 113 | |
| 114 #elif defined(SOLARIS) | |
| 115 | |
| 116 #define INTERFACE | |
| 117 #define IMPLEMENTATION | |
| 118 | |
| 119 #include <stddef.h> | |
| 120 #include <stdlib.h> | |
| 121 #include <string.h> | |
| 122 | |
| 123 | |
| 124 #elif defined(__TANDEM) | |
| 125 | |
| 126 // This case is for the Tandem Business Unit of Compaq Computer Corporation. | |
| 127 // The Tandem case must precede the AT&T case, | |
| 128 // because the Tandem c89 compiler also defines __cplusplus. | |
| 129 | |
| 130 #include "port_tandem.hpp" | |
| 131 | |
| 132 #elif defined(__cplusplus) | |
| 133 // AT&Ts cfront | |
| 134 #define INTERFACE | |
| 135 #define IMPLEMENTATION | |
| 136 #include <unistd.h> | |
| 137 #define signed | |
| 138 // #include <bstring.h> | |
| 139 inline int min( int a, int b) { return a < b ? a : b; } | |
| 140 inline int max( int a, int b) { return a > b ? a : b; } | |
| 141 | |
| 142 #else // All other machines | |
| 143 | |
| 144 #define signed | |
| 145 extern "C" void bcopy(void *b1, void *b2, int len); | |
| 146 inline int min( int a, int b) { return a < b ? a : b; } | |
| 147 inline int max( int a, int b) { return a > b ? a : b; } | |
| 148 | |
| 149 #endif | |
| 150 | |
| 151 //----------------------------------------------------------------------------- | |
| 152 // Safer memory allocations | |
| 153 #ifdef SAFE_MEMORY | |
| 154 #define malloc(size) safe_malloc(__FILE__,__LINE__,size) | |
| 155 #define free(ptr) safe_free(__FILE__,__LINE__,ptr) | |
| 156 #define realloc(ptr,size) safe_realloc(__FILE__,__LINE__,ptr,size) | |
| 157 #define calloc(nitems,size) safe_calloc(__FILE__,__LINE__,nitems,size) | |
| 158 #define strdup(ptr) safe_strdup(__FILE__,__LINE__,ptr) | |
| 159 extern void *safe_malloc (const char *file, unsigned line, unsigned size); | |
| 160 extern void safe_free (const char *file, unsigned line, void *ptr); | |
| 161 extern void *safe_calloc (const char *file, unsigned line, unsigned nitems, unsigned size); | |
| 162 extern void *safe_realloc(const char *file, unsigned line, void *ptr, unsigned size); | |
| 163 extern char *safe_strdup (const char *file, unsigned line, const char *src); | |
|
12146
9758d9f36299
8021954: VM SIGSEGV during classloading on MacOS; hs_err_pid file produced
coleenp
parents:
1972
diff
changeset
|
164 inline void *operator new( size_t size ) throw() { return malloc(size); } |
|
9758d9f36299
8021954: VM SIGSEGV during classloading on MacOS; hs_err_pid file produced
coleenp
parents:
1972
diff
changeset
|
165 inline void operator delete( void *ptr ) { free(ptr); } |
| 0 | 166 #endif |
| 167 | |
| 168 //----------------------------------------------------------------------------- | |
| 169 // And now, the bit-size-specified integer sizes | |
| 170 typedef signed char int8; | |
| 171 typedef unsigned char uint8; | |
| 172 typedef unsigned char byte; | |
| 173 | |
| 174 // All uses of *int16 changed to 32-bit to speed up compiler on Intel | |
| 175 //typedef signed short int16; // Exactly 16bits signed | |
| 176 //typedef unsigned short uint16; // Exactly 16bits unsigned | |
| 177 //const unsigned int min_uint16 = 0x0000; // smallest uint16 | |
| 178 //const unsigned int max_uint16 = 0xFFFF; // largest uint16 | |
| 179 | |
| 180 typedef unsigned int uint; // When you need a fast >=16bit unsigned value | |
| 181 /*typedef int int; */ // When you need a fast >=16bit value | |
| 182 const unsigned int max_uint = (uint)-1; | |
| 183 typedef int32_t int32; // Exactly 32bits signed | |
| 184 typedef uint32_t uint32; // Exactly 32bits unsigned | |
| 185 | |
| 186 // Bit-sized floating point and long thingies | |
| 187 #ifndef __TANDEM | |
| 188 // Do not define these for Tandem, because they conflict with typedefs in softieee.h. | |
| 189 typedef float float32; // 32-bit float | |
| 190 typedef double float64; // 64-bit float | |
| 191 #endif // __TANDEM | |
| 192 | |
| 193 typedef jlong int64; // Java long for my 64-bit type | |
| 194 typedef julong uint64; // Java long for my 64-bit type | |
| 195 | |
| 196 //----------------------------------------------------------------------------- | |
| 197 // Nice constants | |
| 198 uint32 gcd( uint32 x, uint32 y ); | |
| 199 int ff1( uint32 mask ); | |
| 200 int fh1( uint32 mask ); | |
| 201 uint32 rotate32( uint32 x, int32 cnt ); | |
| 202 | |
| 203 | |
| 204 //----------------------------------------------------------------------------- | |
| 205 extern uint32 heap_totalmem; // Current total memory allocation | |
| 206 extern uint32 heap_highwater; // Highwater mark to date for memory usage | |
| 207 | |
| 1972 | 208 #endif // SHARE_VM_LIBADT_PORT_HPP |