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annotate src/share/vm/gc_implementation/parallelScavenge/psVirtualspace.cpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | c18cbe5936b8 |
| children | f08d439fab8c |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2003, 2010, 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 #include "precompiled.hpp" |
| 26 #include "gc_implementation/parallelScavenge/psVirtualspace.hpp" | |
| 27 #include "runtime/os.hpp" | |
| 28 #include "runtime/virtualspace.hpp" | |
| 29 #ifdef TARGET_OS_FAMILY_linux | |
| 30 # include "os_linux.inline.hpp" | |
| 31 #endif | |
| 32 #ifdef TARGET_OS_FAMILY_solaris | |
| 33 # include "os_solaris.inline.hpp" | |
| 34 #endif | |
| 35 #ifdef TARGET_OS_FAMILY_windows | |
| 36 # include "os_windows.inline.hpp" | |
| 37 #endif | |
| 0 | 38 |
| 39 // PSVirtualSpace | |
| 40 | |
| 41 PSVirtualSpace::PSVirtualSpace(ReservedSpace rs, size_t alignment) : | |
| 42 _alignment(alignment) | |
| 43 { | |
| 44 set_reserved(rs); | |
| 45 set_committed(reserved_low_addr(), reserved_low_addr()); | |
| 46 DEBUG_ONLY(verify()); | |
| 47 } | |
| 48 | |
| 49 PSVirtualSpace::PSVirtualSpace(ReservedSpace rs) : | |
| 50 _alignment(os::vm_page_size()) | |
| 51 { | |
| 52 set_reserved(rs); | |
| 53 set_committed(reserved_low_addr(), reserved_low_addr()); | |
| 54 DEBUG_ONLY(verify()); | |
| 55 } | |
| 56 | |
| 57 // Deprecated. | |
| 58 PSVirtualSpace::PSVirtualSpace(): _alignment(os::vm_page_size()) { | |
| 59 } | |
| 60 | |
| 61 // Deprecated. | |
| 62 bool PSVirtualSpace::initialize(ReservedSpace rs, | |
| 63 size_t commit_size) { | |
| 64 set_reserved(rs); | |
| 65 set_committed(reserved_low_addr(), reserved_low_addr()); | |
| 66 | |
| 67 // Commit to initial size. | |
| 68 assert(commit_size <= rs.size(), "commit_size too big"); | |
| 69 bool result = commit_size > 0 ? expand_by(commit_size) : true; | |
| 70 DEBUG_ONLY(verify()); | |
| 71 return result; | |
| 72 } | |
| 73 | |
| 74 PSVirtualSpace::~PSVirtualSpace() { | |
| 75 release(); | |
| 76 } | |
| 77 | |
| 78 bool PSVirtualSpace::contains(void* p) const { | |
| 79 char* const cp = (char*)p; | |
| 80 return cp >= committed_low_addr() && cp < committed_high_addr(); | |
| 81 } | |
| 82 | |
| 83 void PSVirtualSpace::release() { | |
| 84 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
|
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85 // This may not release memory it didn't reserve. |
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86 // Use rs.release() to release the underlying memory instead. |
| 0 | 87 _reserved_low_addr = _reserved_high_addr = NULL; |
| 88 _committed_low_addr = _committed_high_addr = NULL; | |
| 89 _special = false; | |
| 90 } | |
| 91 | |
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92 bool PSVirtualSpace::expand_by(size_t bytes) { |
| 0 | 93 assert(is_aligned(bytes), "arg not aligned"); |
| 94 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
| 95 | |
| 96 if (uncommitted_size() < bytes) { | |
| 97 return false; | |
| 98 } | |
| 99 | |
| 100 char* const base_addr = committed_high_addr(); | |
| 101 bool result = special() || os::commit_memory(base_addr, bytes, alignment()); | |
| 102 if (result) { | |
| 103 _committed_high_addr += bytes; | |
| 104 } | |
| 105 | |
| 106 return result; | |
| 107 } | |
| 108 | |
| 109 bool PSVirtualSpace::shrink_by(size_t bytes) { | |
| 110 assert(is_aligned(bytes), "arg not aligned"); | |
| 111 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
| 112 | |
| 113 if (committed_size() < bytes) { | |
| 114 return false; | |
| 115 } | |
| 116 | |
| 117 char* const base_addr = committed_high_addr() - bytes; | |
| 118 bool result = special() || os::uncommit_memory(base_addr, bytes); | |
| 119 if (result) { | |
| 120 _committed_high_addr -= bytes; | |
| 121 } | |
| 122 | |
| 123 return result; | |
| 124 } | |
| 125 | |
| 126 size_t | |
| 127 PSVirtualSpace::expand_into(PSVirtualSpace* other_space, size_t bytes) { | |
| 128 assert(is_aligned(bytes), "arg not aligned"); | |
| 129 assert(grows_up(), "this space must grow up"); | |
| 130 assert(other_space->grows_down(), "other space must grow down"); | |
| 131 assert(reserved_high_addr() == other_space->reserved_low_addr(), | |
| 132 "spaces not contiguous"); | |
| 133 assert(special() == other_space->special(), "one space is special, the other is not"); | |
| 134 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
| 135 DEBUG_ONLY(PSVirtualSpaceVerifier other_verifier(other_space)); | |
| 136 | |
| 137 size_t bytes_needed = bytes; | |
| 138 | |
| 139 // First use the uncommitted region in this space. | |
| 140 size_t tmp_bytes = MIN2(uncommitted_size(), bytes_needed); | |
| 141 if (tmp_bytes > 0) { | |
| 142 if (expand_by(tmp_bytes)) { | |
| 143 bytes_needed -= tmp_bytes; | |
| 144 } else { | |
| 145 return 0; | |
| 146 } | |
| 147 } | |
| 148 | |
| 149 // Next take from the uncommitted region in the other space, and commit it. | |
| 150 tmp_bytes = MIN2(other_space->uncommitted_size(), bytes_needed); | |
| 151 if (tmp_bytes > 0) { | |
| 152 char* const commit_base = committed_high_addr(); | |
| 153 if (other_space->special() || | |
| 154 os::commit_memory(commit_base, tmp_bytes, alignment())) { | |
| 155 // Reduce the reserved region in the other space. | |
| 156 other_space->set_reserved(other_space->reserved_low_addr() + tmp_bytes, | |
| 157 other_space->reserved_high_addr(), | |
| 158 other_space->special()); | |
| 159 | |
| 160 // Grow both reserved and committed in this space. | |
| 161 _reserved_high_addr += tmp_bytes; | |
| 162 _committed_high_addr += tmp_bytes; | |
| 163 bytes_needed -= tmp_bytes; | |
| 164 } else { | |
| 165 return bytes - bytes_needed; | |
| 166 } | |
| 167 } | |
| 168 | |
| 169 // Finally take from the already committed region in the other space. | |
| 170 tmp_bytes = bytes_needed; | |
| 171 if (tmp_bytes > 0) { | |
| 172 // Reduce both committed and reserved in the other space. | |
| 173 other_space->set_committed(other_space->committed_low_addr() + tmp_bytes, | |
| 174 other_space->committed_high_addr()); | |
| 175 other_space->set_reserved(other_space->reserved_low_addr() + tmp_bytes, | |
| 176 other_space->reserved_high_addr(), | |
| 177 other_space->special()); | |
| 178 | |
| 179 // Grow both reserved and committed in this space. | |
| 180 _reserved_high_addr += tmp_bytes; | |
| 181 _committed_high_addr += tmp_bytes; | |
| 182 } | |
| 183 | |
| 184 return bytes; | |
| 185 } | |
| 186 | |
| 187 #ifndef PRODUCT | |
| 188 bool PSVirtualSpace::is_aligned(size_t value, size_t align) { | |
| 189 const size_t tmp_value = value + align - 1; | |
| 190 const size_t mask = ~(align - 1); | |
| 191 return (tmp_value & mask) == value; | |
| 192 } | |
| 193 | |
| 194 bool PSVirtualSpace::is_aligned(size_t value) const { | |
| 195 return is_aligned(value, alignment()); | |
| 196 } | |
| 197 | |
| 198 bool PSVirtualSpace::is_aligned(char* value) const { | |
| 199 return is_aligned((size_t)value); | |
| 200 } | |
| 201 | |
| 202 void PSVirtualSpace::verify() const { | |
| 203 assert(is_aligned(alignment(), os::vm_page_size()), "bad alignment"); | |
| 204 assert(is_aligned(reserved_low_addr()), "bad reserved_low_addr"); | |
| 205 assert(is_aligned(reserved_high_addr()), "bad reserved_high_addr"); | |
| 206 assert(is_aligned(committed_low_addr()), "bad committed_low_addr"); | |
| 207 assert(is_aligned(committed_high_addr()), "bad committed_high_addr"); | |
| 208 | |
| 209 // Reserved region must be non-empty or both addrs must be 0. | |
| 210 assert(reserved_low_addr() < reserved_high_addr() || | |
| 211 reserved_low_addr() == NULL && reserved_high_addr() == NULL, | |
| 212 "bad reserved addrs"); | |
| 213 assert(committed_low_addr() <= committed_high_addr(), "bad committed addrs"); | |
| 214 | |
| 215 if (grows_up()) { | |
| 216 assert(reserved_low_addr() == committed_low_addr(), "bad low addrs"); | |
| 217 assert(reserved_high_addr() >= committed_high_addr(), "bad high addrs"); | |
| 218 } else { | |
| 219 assert(reserved_high_addr() == committed_high_addr(), "bad high addrs"); | |
| 220 assert(reserved_low_addr() <= committed_low_addr(), "bad low addrs"); | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 void PSVirtualSpace::print() const { | |
| 225 gclog_or_tty->print_cr("virtual space [" PTR_FORMAT "]: alignment=" | |
| 226 SIZE_FORMAT "K grows %s%s", | |
| 227 this, alignment() / K, grows_up() ? "up" : "down", | |
| 228 special() ? " (pinned in memory)" : ""); | |
| 229 gclog_or_tty->print_cr(" reserved=" SIZE_FORMAT "K" | |
| 230 " [" PTR_FORMAT "," PTR_FORMAT "]" | |
| 231 " committed=" SIZE_FORMAT "K" | |
| 232 " [" PTR_FORMAT "," PTR_FORMAT "]", | |
| 233 reserved_size() / K, | |
| 234 reserved_low_addr(), reserved_high_addr(), | |
| 235 committed_size() / K, | |
| 236 committed_low_addr(), committed_high_addr()); | |
| 237 } | |
| 238 #endif // #ifndef PRODUCT | |
| 239 | |
| 240 void PSVirtualSpace::print_space_boundaries_on(outputStream* st) const { | |
| 241 st->print_cr(" [" PTR_FORMAT ", " PTR_FORMAT ", " PTR_FORMAT ")", | |
| 242 low_boundary(), high(), high_boundary()); | |
| 243 } | |
| 244 | |
| 245 PSVirtualSpaceHighToLow::PSVirtualSpaceHighToLow(ReservedSpace rs, | |
| 246 size_t alignment) : | |
| 247 PSVirtualSpace(alignment) | |
| 248 { | |
| 249 set_reserved(rs); | |
| 250 set_committed(reserved_high_addr(), reserved_high_addr()); | |
| 251 DEBUG_ONLY(verify()); | |
| 252 } | |
| 253 | |
| 254 PSVirtualSpaceHighToLow::PSVirtualSpaceHighToLow(ReservedSpace rs) { | |
| 255 set_reserved(rs); | |
| 256 set_committed(reserved_high_addr(), reserved_high_addr()); | |
| 257 DEBUG_ONLY(verify()); | |
| 258 } | |
| 259 | |
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260 bool PSVirtualSpaceHighToLow::expand_by(size_t bytes) { |
| 0 | 261 assert(is_aligned(bytes), "arg not aligned"); |
| 262 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
| 263 | |
| 264 if (uncommitted_size() < bytes) { | |
| 265 return false; | |
| 266 } | |
| 267 | |
| 268 char* const base_addr = committed_low_addr() - bytes; | |
| 269 bool result = special() || os::commit_memory(base_addr, bytes, alignment()); | |
| 270 if (result) { | |
| 271 _committed_low_addr -= bytes; | |
| 272 } | |
| 273 | |
| 274 return result; | |
| 275 } | |
| 276 | |
| 277 bool PSVirtualSpaceHighToLow::shrink_by(size_t bytes) { | |
| 278 assert(is_aligned(bytes), "arg not aligned"); | |
| 279 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
| 280 | |
| 281 if (committed_size() < bytes) { | |
| 282 return false; | |
| 283 } | |
| 284 | |
| 285 char* const base_addr = committed_low_addr(); | |
| 286 bool result = special() || os::uncommit_memory(base_addr, bytes); | |
| 287 if (result) { | |
| 288 _committed_low_addr += bytes; | |
| 289 } | |
| 290 | |
| 291 return result; | |
| 292 } | |
| 293 | |
| 294 size_t PSVirtualSpaceHighToLow::expand_into(PSVirtualSpace* other_space, | |
| 295 size_t bytes) { | |
| 296 assert(is_aligned(bytes), "arg not aligned"); | |
| 297 assert(grows_down(), "this space must grow down"); | |
| 298 assert(other_space->grows_up(), "other space must grow up"); | |
| 299 assert(reserved_low_addr() == other_space->reserved_high_addr(), | |
| 300 "spaces not contiguous"); | |
| 301 assert(special() == other_space->special(), "one space is special in memory, the other is not"); | |
| 302 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
| 303 DEBUG_ONLY(PSVirtualSpaceVerifier other_verifier(other_space)); | |
| 304 | |
| 305 size_t bytes_needed = bytes; | |
| 306 | |
| 307 // First use the uncommitted region in this space. | |
| 308 size_t tmp_bytes = MIN2(uncommitted_size(), bytes_needed); | |
| 309 if (tmp_bytes > 0) { | |
| 310 if (expand_by(tmp_bytes)) { | |
| 311 bytes_needed -= tmp_bytes; | |
| 312 } else { | |
| 313 return 0; | |
| 314 } | |
| 315 } | |
| 316 | |
| 317 // Next take from the uncommitted region in the other space, and commit it. | |
| 318 tmp_bytes = MIN2(other_space->uncommitted_size(), bytes_needed); | |
| 319 if (tmp_bytes > 0) { | |
| 320 char* const commit_base = committed_low_addr() - tmp_bytes; | |
| 321 if (other_space->special() || | |
| 322 os::commit_memory(commit_base, tmp_bytes, alignment())) { | |
| 323 // Reduce the reserved region in the other space. | |
| 324 other_space->set_reserved(other_space->reserved_low_addr(), | |
| 325 other_space->reserved_high_addr() - tmp_bytes, | |
| 326 other_space->special()); | |
| 327 | |
| 328 // Grow both reserved and committed in this space. | |
| 329 _reserved_low_addr -= tmp_bytes; | |
| 330 _committed_low_addr -= tmp_bytes; | |
| 331 bytes_needed -= tmp_bytes; | |
| 332 } else { | |
| 333 return bytes - bytes_needed; | |
| 334 } | |
| 335 } | |
| 336 | |
| 337 // Finally take from the already committed region in the other space. | |
| 338 tmp_bytes = bytes_needed; | |
| 339 if (tmp_bytes > 0) { | |
| 340 // Reduce both committed and reserved in the other space. | |
| 341 other_space->set_committed(other_space->committed_low_addr(), | |
| 342 other_space->committed_high_addr() - tmp_bytes); | |
| 343 other_space->set_reserved(other_space->reserved_low_addr(), | |
| 344 other_space->reserved_high_addr() - tmp_bytes, | |
| 345 other_space->special()); | |
| 346 | |
| 347 // Grow both reserved and committed in this space. | |
| 348 _reserved_low_addr -= tmp_bytes; | |
| 349 _committed_low_addr -= tmp_bytes; | |
| 350 } | |
| 351 | |
| 352 return bytes; | |
| 353 } | |
| 354 | |
| 355 void | |
| 356 PSVirtualSpaceHighToLow::print_space_boundaries_on(outputStream* st) const { | |
| 357 st->print_cr(" (" PTR_FORMAT ", " PTR_FORMAT ", " PTR_FORMAT "]", | |
| 358 high_boundary(), low(), low_boundary()); | |
| 359 } |