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comparison src/share/vm/utilities/globalDefinitions.hpp @ 6275:957c266d8bc5

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Merge with http://hg.openjdk.java.net/hsx/hsx24/hotspot/
author Doug Simon <doug.simon@oracle.com>
date Tue, 21 Aug 2012 10:39:19 +0200
parents 12706c5b39bc 5c8bd7c16119
children e522a00b91aa
comparison
equal deleted inserted replaced
5891:fd8832ae511d 6275:957c266d8bc5
1 /* 1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
159 const size_t K = 1024; 159 const size_t K = 1024;
160 const size_t M = K*K; 160 const size_t M = K*K;
161 const size_t G = M*K; 161 const size_t G = M*K;
162 const size_t HWperKB = K / sizeof(HeapWord); 162 const size_t HWperKB = K / sizeof(HeapWord);
163 163
164 const size_t LOG_K = 10;
165 const size_t LOG_M = 2 * LOG_K;
166 const size_t LOG_G = 2 * LOG_M;
167
168 const jint min_jint = (jint)1 << (sizeof(jint)*BitsPerByte-1); // 0x80000000 == smallest jint 164 const jint min_jint = (jint)1 << (sizeof(jint)*BitsPerByte-1); // 0x80000000 == smallest jint
169 const jint max_jint = (juint)min_jint - 1; // 0x7FFFFFFF == largest jint 165 const jint max_jint = (juint)min_jint - 1; // 0x7FFFFFFF == largest jint
170 166
171 // Constants for converting from a base unit to milli-base units. For 167 // Constants for converting from a base unit to milli-base units. For
172 // example from seconds to milliseconds and microseconds 168 // example from seconds to milliseconds and microseconds
177 173
178 const jlong NANOSECS_PER_SEC = CONST64(1000000000); 174 const jlong NANOSECS_PER_SEC = CONST64(1000000000);
179 const jint NANOSECS_PER_MILLISEC = 1000000; 175 const jint NANOSECS_PER_MILLISEC = 1000000;
180 176
181 inline const char* proper_unit_for_byte_size(size_t s) { 177 inline const char* proper_unit_for_byte_size(size_t s) {
178 #ifdef _LP64
179 if (s >= 10*G) {
180 return "G";
181 }
182 #endif
182 if (s >= 10*M) { 183 if (s >= 10*M) {
183 return "M"; 184 return "M";
184 } else if (s >= 10*K) { 185 } else if (s >= 10*K) {
185 return "K"; 186 return "K";
186 } else { 187 } else {
187 return "B"; 188 return "B";
188 } 189 }
189 } 190 }
190 191
191 inline size_t byte_size_in_proper_unit(size_t s) { 192 template <class T>
193 inline T byte_size_in_proper_unit(T s) {
194 #ifdef _LP64
195 if (s >= 10*G) {
196 return (T)(s/G);
197 }
198 #endif
192 if (s >= 10*M) { 199 if (s >= 10*M) {
193 return s/M; 200 return (T)(s/M);
194 } else if (s >= 10*K) { 201 } else if (s >= 10*K) {
195 return s/K; 202 return (T)(s/K);
196 } else { 203 } else {
197 return s; 204 return s;
198 } 205 }
199 } 206 }
200
201 207
202 //---------------------------------------------------------------------------------------------------- 208 //----------------------------------------------------------------------------------------------------
203 // VM type definitions 209 // VM type definitions
204 210
205 // intx and uintx are the 'extended' int and 'extended' unsigned int types; 211 // intx and uintx are the 'extended' int and 'extended' unsigned int types;