Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/psVirtualspace.cpp @ 579:0fbdb4381b99
6814575: Update copyright year
Summary: Update copyright for files that have been modified in 2009, up to 03/09
Reviewed-by: katleman, tbell, ohair
| author | xdono |
|---|---|
| date | Mon, 09 Mar 2009 13:28:46 -0700 |
| parents | 4e400c36026f |
| children | c18cbe5936b8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 579 | 2 * Copyright 2003-2009 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_psVirtualspace.cpp.incl" | |
| 27 | |
| 28 // PSVirtualSpace | |
| 29 | |
| 30 PSVirtualSpace::PSVirtualSpace(ReservedSpace rs, size_t alignment) : | |
| 31 _alignment(alignment) | |
| 32 { | |
| 33 set_reserved(rs); | |
| 34 set_committed(reserved_low_addr(), reserved_low_addr()); | |
| 35 DEBUG_ONLY(verify()); | |
| 36 } | |
| 37 | |
| 38 PSVirtualSpace::PSVirtualSpace(ReservedSpace rs) : | |
| 39 _alignment(os::vm_page_size()) | |
| 40 { | |
| 41 set_reserved(rs); | |
| 42 set_committed(reserved_low_addr(), reserved_low_addr()); | |
| 43 DEBUG_ONLY(verify()); | |
| 44 } | |
| 45 | |
| 46 // Deprecated. | |
| 47 PSVirtualSpace::PSVirtualSpace(): _alignment(os::vm_page_size()) { | |
| 48 } | |
| 49 | |
| 50 // Deprecated. | |
| 51 bool PSVirtualSpace::initialize(ReservedSpace rs, | |
| 52 size_t commit_size) { | |
| 53 set_reserved(rs); | |
| 54 set_committed(reserved_low_addr(), reserved_low_addr()); | |
| 55 | |
| 56 // Commit to initial size. | |
| 57 assert(commit_size <= rs.size(), "commit_size too big"); | |
| 58 bool result = commit_size > 0 ? expand_by(commit_size) : true; | |
| 59 DEBUG_ONLY(verify()); | |
| 60 return result; | |
| 61 } | |
| 62 | |
| 63 PSVirtualSpace::~PSVirtualSpace() { | |
| 64 release(); | |
| 65 } | |
| 66 | |
| 67 bool PSVirtualSpace::contains(void* p) const { | |
| 68 char* const cp = (char*)p; | |
| 69 return cp >= committed_low_addr() && cp < committed_high_addr(); | |
| 70 } | |
| 71 | |
| 72 void PSVirtualSpace::release() { | |
| 73 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
|
237
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
0
diff
changeset
|
74 // This may not release memory it didn't reserve. |
|
1fdb98a17101
6716785: implicit null checks not triggering with CompressedOops
coleenp
parents:
0
diff
changeset
|
75 // Use rs.release() to release the underlying memory instead. |
| 0 | 76 _reserved_low_addr = _reserved_high_addr = NULL; |
| 77 _committed_low_addr = _committed_high_addr = NULL; | |
| 78 _special = false; | |
| 79 } | |
| 80 | |
|
535
4e400c36026f
6783381: NUMA allocator: don't pretouch eden space with UseNUMA
iveresov
parents:
337
diff
changeset
|
81 bool PSVirtualSpace::expand_by(size_t bytes) { |
| 0 | 82 assert(is_aligned(bytes), "arg not aligned"); |
| 83 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
| 84 | |
| 85 if (uncommitted_size() < bytes) { | |
| 86 return false; | |
| 87 } | |
| 88 | |
| 89 char* const base_addr = committed_high_addr(); | |
| 90 bool result = special() || os::commit_memory(base_addr, bytes, alignment()); | |
| 91 if (result) { | |
| 92 _committed_high_addr += bytes; | |
| 93 } | |
| 94 | |
| 95 return result; | |
| 96 } | |
| 97 | |
| 98 bool PSVirtualSpace::shrink_by(size_t bytes) { | |
| 99 assert(is_aligned(bytes), "arg not aligned"); | |
| 100 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
| 101 | |
| 102 if (committed_size() < bytes) { | |
| 103 return false; | |
| 104 } | |
| 105 | |
| 106 char* const base_addr = committed_high_addr() - bytes; | |
| 107 bool result = special() || os::uncommit_memory(base_addr, bytes); | |
| 108 if (result) { | |
| 109 _committed_high_addr -= bytes; | |
| 110 } | |
| 111 | |
| 112 return result; | |
| 113 } | |
| 114 | |
| 115 size_t | |
| 116 PSVirtualSpace::expand_into(PSVirtualSpace* other_space, size_t bytes) { | |
| 117 assert(is_aligned(bytes), "arg not aligned"); | |
| 118 assert(grows_up(), "this space must grow up"); | |
| 119 assert(other_space->grows_down(), "other space must grow down"); | |
| 120 assert(reserved_high_addr() == other_space->reserved_low_addr(), | |
| 121 "spaces not contiguous"); | |
| 122 assert(special() == other_space->special(), "one space is special, the other is not"); | |
| 123 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
| 124 DEBUG_ONLY(PSVirtualSpaceVerifier other_verifier(other_space)); | |
| 125 | |
| 126 size_t bytes_needed = bytes; | |
| 127 | |
| 128 // First use the uncommitted region in this space. | |
| 129 size_t tmp_bytes = MIN2(uncommitted_size(), bytes_needed); | |
| 130 if (tmp_bytes > 0) { | |
| 131 if (expand_by(tmp_bytes)) { | |
| 132 bytes_needed -= tmp_bytes; | |
| 133 } else { | |
| 134 return 0; | |
| 135 } | |
| 136 } | |
| 137 | |
| 138 // Next take from the uncommitted region in the other space, and commit it. | |
| 139 tmp_bytes = MIN2(other_space->uncommitted_size(), bytes_needed); | |
| 140 if (tmp_bytes > 0) { | |
| 141 char* const commit_base = committed_high_addr(); | |
| 142 if (other_space->special() || | |
| 143 os::commit_memory(commit_base, tmp_bytes, alignment())) { | |
| 144 // Reduce the reserved region in the other space. | |
| 145 other_space->set_reserved(other_space->reserved_low_addr() + tmp_bytes, | |
| 146 other_space->reserved_high_addr(), | |
| 147 other_space->special()); | |
| 148 | |
| 149 // Grow both reserved and committed in this space. | |
| 150 _reserved_high_addr += tmp_bytes; | |
| 151 _committed_high_addr += tmp_bytes; | |
| 152 bytes_needed -= tmp_bytes; | |
| 153 } else { | |
| 154 return bytes - bytes_needed; | |
| 155 } | |
| 156 } | |
| 157 | |
| 158 // Finally take from the already committed region in the other space. | |
| 159 tmp_bytes = bytes_needed; | |
| 160 if (tmp_bytes > 0) { | |
| 161 // Reduce both committed and reserved in the other space. | |
| 162 other_space->set_committed(other_space->committed_low_addr() + tmp_bytes, | |
| 163 other_space->committed_high_addr()); | |
| 164 other_space->set_reserved(other_space->reserved_low_addr() + tmp_bytes, | |
| 165 other_space->reserved_high_addr(), | |
| 166 other_space->special()); | |
| 167 | |
| 168 // Grow both reserved and committed in this space. | |
| 169 _reserved_high_addr += tmp_bytes; | |
| 170 _committed_high_addr += tmp_bytes; | |
| 171 } | |
| 172 | |
| 173 return bytes; | |
| 174 } | |
| 175 | |
| 176 #ifndef PRODUCT | |
| 177 bool PSVirtualSpace::is_aligned(size_t value, size_t align) { | |
| 178 const size_t tmp_value = value + align - 1; | |
| 179 const size_t mask = ~(align - 1); | |
| 180 return (tmp_value & mask) == value; | |
| 181 } | |
| 182 | |
| 183 bool PSVirtualSpace::is_aligned(size_t value) const { | |
| 184 return is_aligned(value, alignment()); | |
| 185 } | |
| 186 | |
| 187 bool PSVirtualSpace::is_aligned(char* value) const { | |
| 188 return is_aligned((size_t)value); | |
| 189 } | |
| 190 | |
| 191 void PSVirtualSpace::verify() const { | |
| 192 assert(is_aligned(alignment(), os::vm_page_size()), "bad alignment"); | |
| 193 assert(is_aligned(reserved_low_addr()), "bad reserved_low_addr"); | |
| 194 assert(is_aligned(reserved_high_addr()), "bad reserved_high_addr"); | |
| 195 assert(is_aligned(committed_low_addr()), "bad committed_low_addr"); | |
| 196 assert(is_aligned(committed_high_addr()), "bad committed_high_addr"); | |
| 197 | |
| 198 // Reserved region must be non-empty or both addrs must be 0. | |
| 199 assert(reserved_low_addr() < reserved_high_addr() || | |
| 200 reserved_low_addr() == NULL && reserved_high_addr() == NULL, | |
| 201 "bad reserved addrs"); | |
| 202 assert(committed_low_addr() <= committed_high_addr(), "bad committed addrs"); | |
| 203 | |
| 204 if (grows_up()) { | |
| 205 assert(reserved_low_addr() == committed_low_addr(), "bad low addrs"); | |
| 206 assert(reserved_high_addr() >= committed_high_addr(), "bad high addrs"); | |
| 207 } else { | |
| 208 assert(reserved_high_addr() == committed_high_addr(), "bad high addrs"); | |
| 209 assert(reserved_low_addr() <= committed_low_addr(), "bad low addrs"); | |
| 210 } | |
| 211 } | |
| 212 | |
| 213 void PSVirtualSpace::print() const { | |
| 214 gclog_or_tty->print_cr("virtual space [" PTR_FORMAT "]: alignment=" | |
| 215 SIZE_FORMAT "K grows %s%s", | |
| 216 this, alignment() / K, grows_up() ? "up" : "down", | |
| 217 special() ? " (pinned in memory)" : ""); | |
| 218 gclog_or_tty->print_cr(" reserved=" SIZE_FORMAT "K" | |
| 219 " [" PTR_FORMAT "," PTR_FORMAT "]" | |
| 220 " committed=" SIZE_FORMAT "K" | |
| 221 " [" PTR_FORMAT "," PTR_FORMAT "]", | |
| 222 reserved_size() / K, | |
| 223 reserved_low_addr(), reserved_high_addr(), | |
| 224 committed_size() / K, | |
| 225 committed_low_addr(), committed_high_addr()); | |
| 226 } | |
| 227 #endif // #ifndef PRODUCT | |
| 228 | |
| 229 void PSVirtualSpace::print_space_boundaries_on(outputStream* st) const { | |
| 230 st->print_cr(" [" PTR_FORMAT ", " PTR_FORMAT ", " PTR_FORMAT ")", | |
| 231 low_boundary(), high(), high_boundary()); | |
| 232 } | |
| 233 | |
| 234 PSVirtualSpaceHighToLow::PSVirtualSpaceHighToLow(ReservedSpace rs, | |
| 235 size_t alignment) : | |
| 236 PSVirtualSpace(alignment) | |
| 237 { | |
| 238 set_reserved(rs); | |
| 239 set_committed(reserved_high_addr(), reserved_high_addr()); | |
| 240 DEBUG_ONLY(verify()); | |
| 241 } | |
| 242 | |
| 243 PSVirtualSpaceHighToLow::PSVirtualSpaceHighToLow(ReservedSpace rs) { | |
| 244 set_reserved(rs); | |
| 245 set_committed(reserved_high_addr(), reserved_high_addr()); | |
| 246 DEBUG_ONLY(verify()); | |
| 247 } | |
| 248 | |
|
535
4e400c36026f
6783381: NUMA allocator: don't pretouch eden space with UseNUMA
iveresov
parents:
337
diff
changeset
|
249 bool PSVirtualSpaceHighToLow::expand_by(size_t bytes) { |
| 0 | 250 assert(is_aligned(bytes), "arg not aligned"); |
| 251 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
| 252 | |
| 253 if (uncommitted_size() < bytes) { | |
| 254 return false; | |
| 255 } | |
| 256 | |
| 257 char* const base_addr = committed_low_addr() - bytes; | |
| 258 bool result = special() || os::commit_memory(base_addr, bytes, alignment()); | |
| 259 if (result) { | |
| 260 _committed_low_addr -= bytes; | |
| 261 } | |
| 262 | |
| 263 return result; | |
| 264 } | |
| 265 | |
| 266 bool PSVirtualSpaceHighToLow::shrink_by(size_t bytes) { | |
| 267 assert(is_aligned(bytes), "arg not aligned"); | |
| 268 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
| 269 | |
| 270 if (committed_size() < bytes) { | |
| 271 return false; | |
| 272 } | |
| 273 | |
| 274 char* const base_addr = committed_low_addr(); | |
| 275 bool result = special() || os::uncommit_memory(base_addr, bytes); | |
| 276 if (result) { | |
| 277 _committed_low_addr += bytes; | |
| 278 } | |
| 279 | |
| 280 return result; | |
| 281 } | |
| 282 | |
| 283 size_t PSVirtualSpaceHighToLow::expand_into(PSVirtualSpace* other_space, | |
| 284 size_t bytes) { | |
| 285 assert(is_aligned(bytes), "arg not aligned"); | |
| 286 assert(grows_down(), "this space must grow down"); | |
| 287 assert(other_space->grows_up(), "other space must grow up"); | |
| 288 assert(reserved_low_addr() == other_space->reserved_high_addr(), | |
| 289 "spaces not contiguous"); | |
| 290 assert(special() == other_space->special(), "one space is special in memory, the other is not"); | |
| 291 DEBUG_ONLY(PSVirtualSpaceVerifier this_verifier(this)); | |
| 292 DEBUG_ONLY(PSVirtualSpaceVerifier other_verifier(other_space)); | |
| 293 | |
| 294 size_t bytes_needed = bytes; | |
| 295 | |
| 296 // First use the uncommitted region in this space. | |
| 297 size_t tmp_bytes = MIN2(uncommitted_size(), bytes_needed); | |
| 298 if (tmp_bytes > 0) { | |
| 299 if (expand_by(tmp_bytes)) { | |
| 300 bytes_needed -= tmp_bytes; | |
| 301 } else { | |
| 302 return 0; | |
| 303 } | |
| 304 } | |
| 305 | |
| 306 // Next take from the uncommitted region in the other space, and commit it. | |
| 307 tmp_bytes = MIN2(other_space->uncommitted_size(), bytes_needed); | |
| 308 if (tmp_bytes > 0) { | |
| 309 char* const commit_base = committed_low_addr() - tmp_bytes; | |
| 310 if (other_space->special() || | |
| 311 os::commit_memory(commit_base, tmp_bytes, alignment())) { | |
| 312 // Reduce the reserved region in the other space. | |
| 313 other_space->set_reserved(other_space->reserved_low_addr(), | |
| 314 other_space->reserved_high_addr() - tmp_bytes, | |
| 315 other_space->special()); | |
| 316 | |
| 317 // Grow both reserved and committed in this space. | |
| 318 _reserved_low_addr -= tmp_bytes; | |
| 319 _committed_low_addr -= tmp_bytes; | |
| 320 bytes_needed -= tmp_bytes; | |
| 321 } else { | |
| 322 return bytes - bytes_needed; | |
| 323 } | |
| 324 } | |
| 325 | |
| 326 // Finally take from the already committed region in the other space. | |
| 327 tmp_bytes = bytes_needed; | |
| 328 if (tmp_bytes > 0) { | |
| 329 // Reduce both committed and reserved in the other space. | |
| 330 other_space->set_committed(other_space->committed_low_addr(), | |
| 331 other_space->committed_high_addr() - tmp_bytes); | |
| 332 other_space->set_reserved(other_space->reserved_low_addr(), | |
| 333 other_space->reserved_high_addr() - tmp_bytes, | |
| 334 other_space->special()); | |
| 335 | |
| 336 // Grow both reserved and committed in this space. | |
| 337 _reserved_low_addr -= tmp_bytes; | |
| 338 _committed_low_addr -= tmp_bytes; | |
| 339 } | |
| 340 | |
| 341 return bytes; | |
| 342 } | |
| 343 | |
| 344 void | |
| 345 PSVirtualSpaceHighToLow::print_space_boundaries_on(outputStream* st) const { | |
| 346 st->print_cr(" (" PTR_FORMAT ", " PTR_FORMAT ", " PTR_FORMAT "]", | |
| 347 high_boundary(), low(), low_boundary()); | |
| 348 } |