Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/virtualspace.cpp @ 22976:5788dbd1f2d6
8066875: VirtualSpace does not use large pages
Reviewed-by: stefank, tschatzl, anoll, thartmann
| author | ehelin |
|---|---|
| date | Fri, 16 Jan 2015 10:29:12 +0100 |
| parents | c2ce24504334 |
| children | 33e421924c67 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2014, 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 "oops/markOop.hpp" | |
| 27 #include "oops/oop.inline.hpp" | |
| 28 #include "runtime/virtualspace.hpp" | |
| 6197 | 29 #include "services/memTracker.hpp" |
| 1972 | 30 #ifdef TARGET_OS_FAMILY_linux |
| 31 # include "os_linux.inline.hpp" | |
| 32 #endif | |
| 33 #ifdef TARGET_OS_FAMILY_solaris | |
| 34 # include "os_solaris.inline.hpp" | |
| 35 #endif | |
| 36 #ifdef TARGET_OS_FAMILY_windows | |
| 37 # include "os_windows.inline.hpp" | |
| 38 #endif | |
| 14411 | 39 #ifdef TARGET_OS_FAMILY_aix |
| 40 # include "os_aix.inline.hpp" | |
| 41 #endif | |
| 3960 | 42 #ifdef TARGET_OS_FAMILY_bsd |
| 43 # include "os_bsd.inline.hpp" | |
| 44 #endif | |
| 0 | 45 |
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46 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
| 0 | 47 |
| 48 // ReservedSpace | |
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49 |
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50 // Dummy constructor |
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51 ReservedSpace::ReservedSpace() : _base(NULL), _size(0), _noaccess_prefix(0), |
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52 _alignment(0), _special(false), _executable(false) { |
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53 } |
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54 |
| 0 | 55 ReservedSpace::ReservedSpace(size_t size) { |
| 22976 | 56 // Want to use large pages where possible and pad with small pages. |
| 57 size_t page_size = os::page_size_for_region_unaligned(size, 1); | |
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58 bool large_pages = page_size != (size_t)os::vm_page_size(); |
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59 // Don't force the alignment to be large page aligned, |
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60 // since that will waste memory. |
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61 size_t alignment = os::vm_allocation_granularity(); |
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62 initialize(size, alignment, large_pages, NULL, 0, false); |
| 0 | 63 } |
| 64 | |
| 65 ReservedSpace::ReservedSpace(size_t size, size_t alignment, | |
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66 bool large, |
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67 char* requested_address, |
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68 const size_t noaccess_prefix) { |
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69 initialize(size+noaccess_prefix, alignment, large, requested_address, |
| 656 | 70 noaccess_prefix, false); |
| 71 } | |
| 72 | |
| 73 ReservedSpace::ReservedSpace(size_t size, size_t alignment, | |
| 74 bool large, | |
| 75 bool executable) { | |
| 76 initialize(size, alignment, large, NULL, 0, executable); | |
| 0 | 77 } |
| 78 | |
| 1618 | 79 // Helper method. |
| 80 static bool failed_to_reserve_as_requested(char* base, char* requested_address, | |
| 81 const size_t size, bool special) | |
| 82 { | |
| 83 if (base == requested_address || requested_address == NULL) | |
| 84 return false; // did not fail | |
| 85 | |
| 86 if (base != NULL) { | |
| 87 // Different reserve address may be acceptable in other cases | |
| 88 // but for compressed oops heap should be at requested address. | |
| 89 assert(UseCompressedOops, "currently requested address used only for compressed oops"); | |
| 90 if (PrintCompressedOopsMode) { | |
| 91 tty->cr(); | |
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92 tty->print_cr("Reserved memory not at requested address: " PTR_FORMAT " vs " PTR_FORMAT, base, requested_address); |
| 1618 | 93 } |
| 94 // OS ignored requested address. Try different address. | |
| 95 if (special) { | |
| 96 if (!os::release_memory_special(base, size)) { | |
| 97 fatal("os::release_memory_special failed"); | |
| 98 } | |
| 99 } else { | |
| 100 if (!os::release_memory(base, size)) { | |
| 101 fatal("os::release_memory failed"); | |
| 102 } | |
| 103 } | |
| 104 } | |
| 105 return true; | |
| 106 } | |
| 107 | |
| 0 | 108 void ReservedSpace::initialize(size_t size, size_t alignment, bool large, |
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109 char* requested_address, |
| 656 | 110 const size_t noaccess_prefix, |
| 111 bool executable) { | |
| 0 | 112 const size_t granularity = os::vm_allocation_granularity(); |
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113 assert((size & (granularity - 1)) == 0, |
| 0 | 114 "size not aligned to os::vm_allocation_granularity()"); |
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115 assert((alignment & (granularity - 1)) == 0, |
| 0 | 116 "alignment not aligned to os::vm_allocation_granularity()"); |
| 117 assert(alignment == 0 || is_power_of_2((intptr_t)alignment), | |
| 118 "not a power of 2"); | |
| 119 | |
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120 alignment = MAX2(alignment, (size_t)os::vm_page_size()); |
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121 |
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122 // Assert that if noaccess_prefix is used, it is the same as alignment. |
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123 assert(noaccess_prefix == 0 || |
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124 noaccess_prefix == alignment, "noaccess prefix wrong"); |
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125 |
| 0 | 126 _base = NULL; |
| 127 _size = 0; | |
| 128 _special = false; | |
| 656 | 129 _executable = executable; |
| 0 | 130 _alignment = 0; |
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131 _noaccess_prefix = 0; |
| 0 | 132 if (size == 0) { |
| 133 return; | |
| 134 } | |
| 135 | |
| 136 // If OS doesn't support demand paging for large page memory, we need | |
| 137 // to use reserve_memory_special() to reserve and pin the entire region. | |
| 138 bool special = large && !os::can_commit_large_page_memory(); | |
| 139 char* base = NULL; | |
| 140 | |
| 1618 | 141 if (requested_address != 0) { |
| 142 requested_address -= noaccess_prefix; // adjust requested address | |
| 143 assert(requested_address != NULL, "huge noaccess prefix?"); | |
| 144 } | |
| 145 | |
| 0 | 146 if (special) { |
| 147 | |
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148 base = os::reserve_memory_special(size, alignment, requested_address, executable); |
| 0 | 149 |
| 150 if (base != NULL) { | |
| 1618 | 151 if (failed_to_reserve_as_requested(base, requested_address, size, true)) { |
| 152 // OS ignored requested address. Try different address. | |
| 153 return; | |
| 154 } | |
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155 // Check alignment constraints. |
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156 assert((uintptr_t) base % alignment == 0, |
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157 err_msg("Large pages returned a non-aligned address, base: " |
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158 PTR_FORMAT " alignment: " PTR_FORMAT, |
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159 base, (void*)(uintptr_t)alignment)); |
| 0 | 160 _special = true; |
| 161 } else { | |
| 162 // failed; try to reserve regular memory below | |
| 1618 | 163 if (UseLargePages && (!FLAG_IS_DEFAULT(UseLargePages) || |
| 164 !FLAG_IS_DEFAULT(LargePageSizeInBytes))) { | |
| 165 if (PrintCompressedOopsMode) { | |
| 166 tty->cr(); | |
| 167 tty->print_cr("Reserve regular memory without large pages."); | |
| 168 } | |
| 169 } | |
| 0 | 170 } |
| 171 } | |
| 172 | |
| 173 if (base == NULL) { | |
| 174 // Optimistically assume that the OSes returns an aligned base pointer. | |
| 175 // When reserving a large address range, most OSes seem to align to at | |
| 176 // least 64K. | |
| 177 | |
| 178 // If the memory was requested at a particular address, use | |
| 179 // os::attempt_reserve_memory_at() to avoid over mapping something | |
| 180 // important. If available space is not detected, return NULL. | |
| 181 | |
| 182 if (requested_address != 0) { | |
| 1618 | 183 base = os::attempt_reserve_memory_at(size, requested_address); |
| 184 if (failed_to_reserve_as_requested(base, requested_address, size, false)) { | |
| 185 // OS ignored requested address. Try different address. | |
| 186 base = NULL; | |
| 187 } | |
| 0 | 188 } else { |
| 189 base = os::reserve_memory(size, NULL, alignment); | |
| 190 } | |
| 191 | |
| 192 if (base == NULL) return; | |
| 193 | |
| 194 // Check alignment constraints | |
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195 if ((((size_t)base + noaccess_prefix) & (alignment - 1)) != 0) { |
| 0 | 196 // Base not aligned, retry |
| 197 if (!os::release_memory(base, size)) fatal("os::release_memory failed"); | |
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198 // Make sure that size is aligned |
| 0 | 199 size = align_size_up(size, alignment); |
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200 base = os::reserve_memory_aligned(size, alignment); |
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201 |
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202 if (requested_address != 0 && |
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203 failed_to_reserve_as_requested(base, requested_address, size, false)) { |
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204 // As a result of the alignment constraints, the allocated base differs |
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205 // from the requested address. Return back to the caller who can |
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206 // take remedial action (like try again without a requested address). |
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207 assert(_base == NULL, "should be"); |
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208 return; |
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209 } |
| 0 | 210 } |
| 211 } | |
| 212 // Done | |
| 213 _base = base; | |
| 214 _size = size; | |
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215 _alignment = alignment; |
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216 _noaccess_prefix = noaccess_prefix; |
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217 |
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218 // Assert that if noaccess_prefix is used, it is the same as alignment. |
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219 assert(noaccess_prefix == 0 || |
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220 noaccess_prefix == _alignment, "noaccess prefix wrong"); |
| 0 | 221 |
| 222 assert(markOopDesc::encode_pointer_as_mark(_base)->decode_pointer() == _base, | |
| 223 "area must be distinguisable from marks for mark-sweep"); | |
| 224 assert(markOopDesc::encode_pointer_as_mark(&_base[size])->decode_pointer() == &_base[size], | |
| 225 "area must be distinguisable from marks for mark-sweep"); | |
| 226 } | |
| 227 | |
| 228 | |
| 229 ReservedSpace::ReservedSpace(char* base, size_t size, size_t alignment, | |
| 656 | 230 bool special, bool executable) { |
| 0 | 231 assert((size % os::vm_allocation_granularity()) == 0, |
| 232 "size not allocation aligned"); | |
| 233 _base = base; | |
| 234 _size = size; | |
| 235 _alignment = alignment; | |
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236 _noaccess_prefix = 0; |
| 0 | 237 _special = special; |
| 656 | 238 _executable = executable; |
| 0 | 239 } |
| 240 | |
| 241 | |
| 242 ReservedSpace ReservedSpace::first_part(size_t partition_size, size_t alignment, | |
| 243 bool split, bool realloc) { | |
| 244 assert(partition_size <= size(), "partition failed"); | |
| 245 if (split) { | |
| 656 | 246 os::split_reserved_memory(base(), size(), partition_size, realloc); |
| 0 | 247 } |
| 656 | 248 ReservedSpace result(base(), partition_size, alignment, special(), |
| 249 executable()); | |
| 0 | 250 return result; |
| 251 } | |
| 252 | |
| 253 | |
| 254 ReservedSpace | |
| 255 ReservedSpace::last_part(size_t partition_size, size_t alignment) { | |
| 256 assert(partition_size <= size(), "partition failed"); | |
| 257 ReservedSpace result(base() + partition_size, size() - partition_size, | |
| 656 | 258 alignment, special(), executable()); |
| 0 | 259 return result; |
| 260 } | |
| 261 | |
| 262 | |
| 263 size_t ReservedSpace::page_align_size_up(size_t size) { | |
| 264 return align_size_up(size, os::vm_page_size()); | |
| 265 } | |
| 266 | |
| 267 | |
| 268 size_t ReservedSpace::page_align_size_down(size_t size) { | |
| 269 return align_size_down(size, os::vm_page_size()); | |
| 270 } | |
| 271 | |
| 272 | |
| 273 size_t ReservedSpace::allocation_align_size_up(size_t size) { | |
| 274 return align_size_up(size, os::vm_allocation_granularity()); | |
| 275 } | |
| 276 | |
| 277 | |
| 278 size_t ReservedSpace::allocation_align_size_down(size_t size) { | |
| 279 return align_size_down(size, os::vm_allocation_granularity()); | |
| 280 } | |
| 281 | |
| 282 | |
| 283 void ReservedSpace::release() { | |
| 284 if (is_reserved()) { | |
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285 char *real_base = _base - _noaccess_prefix; |
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286 const size_t real_size = _size + _noaccess_prefix; |
| 0 | 287 if (special()) { |
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288 os::release_memory_special(real_base, real_size); |
| 0 | 289 } else{ |
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290 os::release_memory(real_base, real_size); |
| 0 | 291 } |
| 292 _base = NULL; | |
| 293 _size = 0; | |
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294 _noaccess_prefix = 0; |
| 0 | 295 _special = false; |
| 656 | 296 _executable = false; |
| 0 | 297 } |
| 298 } | |
| 299 | |
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300 void ReservedSpace::protect_noaccess_prefix(const size_t size) { |
| 1618 | 301 assert( (_noaccess_prefix != 0) == (UseCompressedOops && _base != NULL && |
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302 (Universe::narrow_oop_base() != NULL) && |
| 1618 | 303 Universe::narrow_oop_use_implicit_null_checks()), |
| 304 "noaccess_prefix should be used only with non zero based compressed oops"); | |
| 305 | |
| 306 // If there is no noaccess prefix, return. | |
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307 if (_noaccess_prefix == 0) return; |
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308 |
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309 assert(_noaccess_prefix >= (size_t)os::vm_page_size(), |
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310 "must be at least page size big"); |
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311 |
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312 // Protect memory at the base of the allocated region. |
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313 // If special, the page was committed (only matters on windows) |
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314 if (!os::protect_memory(_base, _noaccess_prefix, os::MEM_PROT_NONE, |
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315 _special)) { |
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316 fatal("cannot protect protection page"); |
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317 } |
| 1618 | 318 if (PrintCompressedOopsMode) { |
| 319 tty->cr(); | |
| 320 tty->print_cr("Protected page at the reserved heap base: " PTR_FORMAT " / " INTX_FORMAT " bytes", _base, _noaccess_prefix); | |
| 321 } | |
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322 |
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323 _base += _noaccess_prefix; |
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324 _size -= _noaccess_prefix; |
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325 assert((size == _size) && ((uintptr_t)_base % _alignment == 0), |
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326 "must be exactly of required size and alignment"); |
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327 } |
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328 |
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329 ReservedHeapSpace::ReservedHeapSpace(size_t size, size_t alignment, |
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330 bool large, char* requested_address) : |
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331 ReservedSpace(size, alignment, large, |
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332 requested_address, |
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333 (UseCompressedOops && (Universe::narrow_oop_base() != NULL) && |
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334 Universe::narrow_oop_use_implicit_null_checks()) ? |
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335 lcm(os::vm_page_size(), alignment) : 0) { |
| 6197 | 336 if (base() > 0) { |
| 337 MemTracker::record_virtual_memory_type((address)base(), mtJavaHeap); | |
| 338 } | |
| 339 | |
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340 // Only reserved space for the java heap should have a noaccess_prefix |
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341 // if using compressed oops. |
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342 protect_noaccess_prefix(size); |
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343 } |
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344 |
| 656 | 345 // Reserve space for code segment. Same as Java heap only we mark this as |
| 346 // executable. | |
| 347 ReservedCodeSpace::ReservedCodeSpace(size_t r_size, | |
| 348 size_t rs_align, | |
| 349 bool large) : | |
| 350 ReservedSpace(r_size, rs_align, large, /*executable*/ true) { | |
| 6197 | 351 MemTracker::record_virtual_memory_type((address)base(), mtCode); |
| 656 | 352 } |
| 353 | |
| 0 | 354 // VirtualSpace |
| 355 | |
| 356 VirtualSpace::VirtualSpace() { | |
| 357 _low_boundary = NULL; | |
| 358 _high_boundary = NULL; | |
| 359 _low = NULL; | |
| 360 _high = NULL; | |
| 361 _lower_high = NULL; | |
| 362 _middle_high = NULL; | |
| 363 _upper_high = NULL; | |
| 364 _lower_high_boundary = NULL; | |
| 365 _middle_high_boundary = NULL; | |
| 366 _upper_high_boundary = NULL; | |
| 367 _lower_alignment = 0; | |
| 368 _middle_alignment = 0; | |
| 369 _upper_alignment = 0; | |
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370 _special = false; |
| 656 | 371 _executable = false; |
| 0 | 372 } |
| 373 | |
| 374 | |
| 375 bool VirtualSpace::initialize(ReservedSpace rs, size_t committed_size) { | |
| 22976 | 376 const size_t max_commit_granularity = os::page_size_for_region_unaligned(rs.size(), 1); |
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377 return initialize_with_granularity(rs, committed_size, max_commit_granularity); |
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378 } |
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379 |
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380 bool VirtualSpace::initialize_with_granularity(ReservedSpace rs, size_t committed_size, size_t max_commit_granularity) { |
| 0 | 381 if(!rs.is_reserved()) return false; // allocation failed. |
| 382 assert(_low_boundary == NULL, "VirtualSpace already initialized"); | |
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383 assert(max_commit_granularity > 0, "Granularity must be non-zero."); |
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384 |
| 0 | 385 _low_boundary = rs.base(); |
| 386 _high_boundary = low_boundary() + rs.size(); | |
| 387 | |
| 388 _low = low_boundary(); | |
| 389 _high = low(); | |
| 390 | |
| 391 _special = rs.special(); | |
| 656 | 392 _executable = rs.executable(); |
| 0 | 393 |
| 394 // When a VirtualSpace begins life at a large size, make all future expansion | |
| 395 // and shrinking occur aligned to a granularity of large pages. This avoids | |
| 396 // fragmentation of physical addresses that inhibits the use of large pages | |
| 397 // by the OS virtual memory system. Empirically, we see that with a 4MB | |
| 398 // page size, the only spaces that get handled this way are codecache and | |
| 399 // the heap itself, both of which provide a substantial performance | |
| 400 // boost in many benchmarks when covered by large pages. | |
| 401 // | |
| 402 // No attempt is made to force large page alignment at the very top and | |
| 403 // bottom of the space if they are not aligned so already. | |
| 404 _lower_alignment = os::vm_page_size(); | |
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405 _middle_alignment = max_commit_granularity; |
| 0 | 406 _upper_alignment = os::vm_page_size(); |
| 407 | |
| 408 // End of each region | |
| 409 _lower_high_boundary = (char*) round_to((intptr_t) low_boundary(), middle_alignment()); | |
| 410 _middle_high_boundary = (char*) round_down((intptr_t) high_boundary(), middle_alignment()); | |
| 411 _upper_high_boundary = high_boundary(); | |
| 412 | |
| 413 // High address of each region | |
| 414 _lower_high = low_boundary(); | |
| 415 _middle_high = lower_high_boundary(); | |
| 416 _upper_high = middle_high_boundary(); | |
| 417 | |
| 418 // commit to initial size | |
| 419 if (committed_size > 0) { | |
| 420 if (!expand_by(committed_size)) { | |
| 421 return false; | |
| 422 } | |
| 423 } | |
| 424 return true; | |
| 425 } | |
| 426 | |
| 427 | |
| 428 VirtualSpace::~VirtualSpace() { | |
| 429 release(); | |
| 430 } | |
| 431 | |
| 432 | |
| 433 void VirtualSpace::release() { | |
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434 // This does not release memory it never reserved. |
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435 // Caller must release via rs.release(); |
| 0 | 436 _low_boundary = NULL; |
| 437 _high_boundary = NULL; | |
| 438 _low = NULL; | |
| 439 _high = NULL; | |
| 440 _lower_high = NULL; | |
| 441 _middle_high = NULL; | |
| 442 _upper_high = NULL; | |
| 443 _lower_high_boundary = NULL; | |
| 444 _middle_high_boundary = NULL; | |
| 445 _upper_high_boundary = NULL; | |
| 446 _lower_alignment = 0; | |
| 447 _middle_alignment = 0; | |
| 448 _upper_alignment = 0; | |
| 449 _special = false; | |
| 656 | 450 _executable = false; |
| 0 | 451 } |
| 452 | |
| 453 | |
| 454 size_t VirtualSpace::committed_size() const { | |
| 455 return pointer_delta(high(), low(), sizeof(char)); | |
| 456 } | |
| 457 | |
| 458 | |
| 459 size_t VirtualSpace::reserved_size() const { | |
| 460 return pointer_delta(high_boundary(), low_boundary(), sizeof(char)); | |
| 461 } | |
| 462 | |
| 463 | |
| 464 size_t VirtualSpace::uncommitted_size() const { | |
| 465 return reserved_size() - committed_size(); | |
| 466 } | |
| 467 | |
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468 size_t VirtualSpace::actual_committed_size() const { |
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469 // Special VirtualSpaces commit all reserved space up front. |
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470 if (special()) { |
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471 return reserved_size(); |
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472 } |
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473 |
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474 size_t committed_low = pointer_delta(_lower_high, _low_boundary, sizeof(char)); |
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475 size_t committed_middle = pointer_delta(_middle_high, _lower_high_boundary, sizeof(char)); |
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476 size_t committed_high = pointer_delta(_upper_high, _middle_high_boundary, sizeof(char)); |
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477 |
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478 #ifdef ASSERT |
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479 size_t lower = pointer_delta(_lower_high_boundary, _low_boundary, sizeof(char)); |
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480 size_t middle = pointer_delta(_middle_high_boundary, _lower_high_boundary, sizeof(char)); |
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481 size_t upper = pointer_delta(_upper_high_boundary, _middle_high_boundary, sizeof(char)); |
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482 |
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483 if (committed_high > 0) { |
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484 assert(committed_low == lower, "Must be"); |
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485 assert(committed_middle == middle, "Must be"); |
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486 } |
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487 |
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488 if (committed_middle > 0) { |
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489 assert(committed_low == lower, "Must be"); |
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490 } |
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491 if (committed_middle < middle) { |
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492 assert(committed_high == 0, "Must be"); |
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493 } |
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494 |
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495 if (committed_low < lower) { |
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496 assert(committed_high == 0, "Must be"); |
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497 assert(committed_middle == 0, "Must be"); |
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498 } |
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499 #endif |
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500 |
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501 return committed_low + committed_middle + committed_high; |
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502 } |
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503 |
| 0 | 504 |
| 505 bool VirtualSpace::contains(const void* p) const { | |
| 506 return low() <= (const char*) p && (const char*) p < high(); | |
| 507 } | |
| 508 | |
| 509 /* | |
| 510 First we need to determine if a particular virtual space is using large | |
| 511 pages. This is done at the initialize function and only virtual spaces | |
| 512 that are larger than LargePageSizeInBytes use large pages. Once we | |
| 513 have determined this, all expand_by and shrink_by calls must grow and | |
| 514 shrink by large page size chunks. If a particular request | |
| 515 is within the current large page, the call to commit and uncommit memory | |
| 516 can be ignored. In the case that the low and high boundaries of this | |
| 517 space is not large page aligned, the pages leading to the first large | |
| 518 page address and the pages after the last large page address must be | |
| 519 allocated with default pages. | |
| 520 */ | |
| 521 bool VirtualSpace::expand_by(size_t bytes, bool pre_touch) { | |
| 522 if (uncommitted_size() < bytes) return false; | |
| 523 | |
| 524 if (special()) { | |
| 525 // don't commit memory if the entire space is pinned in memory | |
| 526 _high += bytes; | |
| 527 return true; | |
| 528 } | |
| 529 | |
| 530 char* previous_high = high(); | |
| 531 char* unaligned_new_high = high() + bytes; | |
| 532 assert(unaligned_new_high <= high_boundary(), | |
| 533 "cannot expand by more than upper boundary"); | |
| 534 | |
| 535 // Calculate where the new high for each of the regions should be. If | |
| 536 // the low_boundary() and high_boundary() are LargePageSizeInBytes aligned | |
| 537 // then the unaligned lower and upper new highs would be the | |
| 538 // lower_high() and upper_high() respectively. | |
| 539 char* unaligned_lower_new_high = | |
| 540 MIN2(unaligned_new_high, lower_high_boundary()); | |
| 541 char* unaligned_middle_new_high = | |
| 542 MIN2(unaligned_new_high, middle_high_boundary()); | |
| 543 char* unaligned_upper_new_high = | |
| 544 MIN2(unaligned_new_high, upper_high_boundary()); | |
| 545 | |
| 546 // Align the new highs based on the regions alignment. lower and upper | |
| 547 // alignment will always be default page size. middle alignment will be | |
| 548 // LargePageSizeInBytes if the actual size of the virtual space is in | |
| 549 // fact larger than LargePageSizeInBytes. | |
| 550 char* aligned_lower_new_high = | |
| 551 (char*) round_to((intptr_t) unaligned_lower_new_high, lower_alignment()); | |
| 552 char* aligned_middle_new_high = | |
| 553 (char*) round_to((intptr_t) unaligned_middle_new_high, middle_alignment()); | |
| 554 char* aligned_upper_new_high = | |
| 555 (char*) round_to((intptr_t) unaligned_upper_new_high, upper_alignment()); | |
| 556 | |
| 557 // Determine which regions need to grow in this expand_by call. | |
| 558 // If you are growing in the lower region, high() must be in that | |
| 559 // region so calcuate the size based on high(). For the middle and | |
| 560 // upper regions, determine the starting point of growth based on the | |
| 561 // location of high(). By getting the MAX of the region's low address | |
| 562 // (or the prevoius region's high address) and high(), we can tell if it | |
| 563 // is an intra or inter region growth. | |
| 564 size_t lower_needs = 0; | |
| 565 if (aligned_lower_new_high > lower_high()) { | |
| 566 lower_needs = | |
| 567 pointer_delta(aligned_lower_new_high, lower_high(), sizeof(char)); | |
| 568 } | |
| 569 size_t middle_needs = 0; | |
| 570 if (aligned_middle_new_high > middle_high()) { | |
| 571 middle_needs = | |
| 572 pointer_delta(aligned_middle_new_high, middle_high(), sizeof(char)); | |
| 573 } | |
| 574 size_t upper_needs = 0; | |
| 575 if (aligned_upper_new_high > upper_high()) { | |
| 576 upper_needs = | |
| 577 pointer_delta(aligned_upper_new_high, upper_high(), sizeof(char)); | |
| 578 } | |
| 579 | |
| 580 // Check contiguity. | |
| 581 assert(low_boundary() <= lower_high() && | |
| 582 lower_high() <= lower_high_boundary(), | |
| 583 "high address must be contained within the region"); | |
| 584 assert(lower_high_boundary() <= middle_high() && | |
| 585 middle_high() <= middle_high_boundary(), | |
| 586 "high address must be contained within the region"); | |
| 587 assert(middle_high_boundary() <= upper_high() && | |
| 588 upper_high() <= upper_high_boundary(), | |
| 589 "high address must be contained within the region"); | |
| 590 | |
| 591 // Commit regions | |
| 592 if (lower_needs > 0) { | |
| 593 assert(low_boundary() <= lower_high() && | |
| 594 lower_high() + lower_needs <= lower_high_boundary(), | |
| 595 "must not expand beyond region"); | |
| 656 | 596 if (!os::commit_memory(lower_high(), lower_needs, _executable)) { |
|
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597 debug_only(warning("INFO: os::commit_memory(" PTR_FORMAT |
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598 ", lower_needs=" SIZE_FORMAT ", %d) failed", |
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599 lower_high(), lower_needs, _executable);) |
| 0 | 600 return false; |
| 601 } else { | |
| 602 _lower_high += lower_needs; | |
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603 } |
| 0 | 604 } |
| 605 if (middle_needs > 0) { | |
| 606 assert(lower_high_boundary() <= middle_high() && | |
| 607 middle_high() + middle_needs <= middle_high_boundary(), | |
| 608 "must not expand beyond region"); | |
| 656 | 609 if (!os::commit_memory(middle_high(), middle_needs, middle_alignment(), |
| 610 _executable)) { | |
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611 debug_only(warning("INFO: os::commit_memory(" PTR_FORMAT |
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612 ", middle_needs=" SIZE_FORMAT ", " SIZE_FORMAT |
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613 ", %d) failed", middle_high(), middle_needs, |
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614 middle_alignment(), _executable);) |
| 0 | 615 return false; |
| 616 } | |
| 617 _middle_high += middle_needs; | |
| 618 } | |
| 619 if (upper_needs > 0) { | |
| 620 assert(middle_high_boundary() <= upper_high() && | |
| 621 upper_high() + upper_needs <= upper_high_boundary(), | |
| 622 "must not expand beyond region"); | |
| 656 | 623 if (!os::commit_memory(upper_high(), upper_needs, _executable)) { |
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624 debug_only(warning("INFO: os::commit_memory(" PTR_FORMAT |
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625 ", upper_needs=" SIZE_FORMAT ", %d) failed", |
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626 upper_high(), upper_needs, _executable);) |
| 0 | 627 return false; |
| 628 } else { | |
| 629 _upper_high += upper_needs; | |
| 630 } | |
| 631 } | |
| 632 | |
| 633 if (pre_touch || AlwaysPreTouch) { | |
| 22973 | 634 os::pretouch_memory(previous_high, unaligned_new_high); |
| 0 | 635 } |
| 636 | |
| 637 _high += bytes; | |
| 638 return true; | |
| 639 } | |
| 640 | |
| 641 // A page is uncommitted if the contents of the entire page is deemed unusable. | |
| 642 // Continue to decrement the high() pointer until it reaches a page boundary | |
| 643 // in which case that particular page can now be uncommitted. | |
| 644 void VirtualSpace::shrink_by(size_t size) { | |
| 645 if (committed_size() < size) | |
| 646 fatal("Cannot shrink virtual space to negative size"); | |
| 647 | |
| 648 if (special()) { | |
| 649 // don't uncommit if the entire space is pinned in memory | |
| 650 _high -= size; | |
| 651 return; | |
| 652 } | |
| 653 | |
| 654 char* unaligned_new_high = high() - size; | |
| 655 assert(unaligned_new_high >= low_boundary(), "cannot shrink past lower boundary"); | |
| 656 | |
| 657 // Calculate new unaligned address | |
| 658 char* unaligned_upper_new_high = | |
| 659 MAX2(unaligned_new_high, middle_high_boundary()); | |
| 660 char* unaligned_middle_new_high = | |
| 661 MAX2(unaligned_new_high, lower_high_boundary()); | |
| 662 char* unaligned_lower_new_high = | |
| 663 MAX2(unaligned_new_high, low_boundary()); | |
| 664 | |
| 665 // Align address to region's alignment | |
| 666 char* aligned_upper_new_high = | |
| 667 (char*) round_to((intptr_t) unaligned_upper_new_high, upper_alignment()); | |
| 668 char* aligned_middle_new_high = | |
| 669 (char*) round_to((intptr_t) unaligned_middle_new_high, middle_alignment()); | |
| 670 char* aligned_lower_new_high = | |
| 671 (char*) round_to((intptr_t) unaligned_lower_new_high, lower_alignment()); | |
| 672 | |
| 673 // Determine which regions need to shrink | |
| 674 size_t upper_needs = 0; | |
| 675 if (aligned_upper_new_high < upper_high()) { | |
| 676 upper_needs = | |
| 677 pointer_delta(upper_high(), aligned_upper_new_high, sizeof(char)); | |
| 678 } | |
| 679 size_t middle_needs = 0; | |
| 680 if (aligned_middle_new_high < middle_high()) { | |
| 681 middle_needs = | |
| 682 pointer_delta(middle_high(), aligned_middle_new_high, sizeof(char)); | |
| 683 } | |
| 684 size_t lower_needs = 0; | |
| 685 if (aligned_lower_new_high < lower_high()) { | |
| 686 lower_needs = | |
| 687 pointer_delta(lower_high(), aligned_lower_new_high, sizeof(char)); | |
| 688 } | |
| 689 | |
| 690 // Check contiguity. | |
| 691 assert(middle_high_boundary() <= upper_high() && | |
| 692 upper_high() <= upper_high_boundary(), | |
| 693 "high address must be contained within the region"); | |
| 694 assert(lower_high_boundary() <= middle_high() && | |
| 695 middle_high() <= middle_high_boundary(), | |
| 696 "high address must be contained within the region"); | |
| 697 assert(low_boundary() <= lower_high() && | |
| 698 lower_high() <= lower_high_boundary(), | |
| 699 "high address must be contained within the region"); | |
| 700 | |
| 701 // Uncommit | |
| 702 if (upper_needs > 0) { | |
| 703 assert(middle_high_boundary() <= aligned_upper_new_high && | |
| 704 aligned_upper_new_high + upper_needs <= upper_high_boundary(), | |
| 705 "must not shrink beyond region"); | |
| 706 if (!os::uncommit_memory(aligned_upper_new_high, upper_needs)) { | |
| 707 debug_only(warning("os::uncommit_memory failed")); | |
| 708 return; | |
| 709 } else { | |
| 710 _upper_high -= upper_needs; | |
| 711 } | |
| 712 } | |
| 713 if (middle_needs > 0) { | |
| 714 assert(lower_high_boundary() <= aligned_middle_new_high && | |
| 715 aligned_middle_new_high + middle_needs <= middle_high_boundary(), | |
| 716 "must not shrink beyond region"); | |
| 717 if (!os::uncommit_memory(aligned_middle_new_high, middle_needs)) { | |
| 718 debug_only(warning("os::uncommit_memory failed")); | |
| 719 return; | |
| 720 } else { | |
| 721 _middle_high -= middle_needs; | |
| 722 } | |
| 723 } | |
| 724 if (lower_needs > 0) { | |
| 725 assert(low_boundary() <= aligned_lower_new_high && | |
| 726 aligned_lower_new_high + lower_needs <= lower_high_boundary(), | |
| 727 "must not shrink beyond region"); | |
| 728 if (!os::uncommit_memory(aligned_lower_new_high, lower_needs)) { | |
| 729 debug_only(warning("os::uncommit_memory failed")); | |
| 730 return; | |
| 731 } else { | |
| 732 _lower_high -= lower_needs; | |
| 733 } | |
| 734 } | |
| 735 | |
| 736 _high -= size; | |
| 737 } | |
| 738 | |
| 739 #ifndef PRODUCT | |
| 740 void VirtualSpace::check_for_contiguity() { | |
| 741 // Check contiguity. | |
| 742 assert(low_boundary() <= lower_high() && | |
| 743 lower_high() <= lower_high_boundary(), | |
| 744 "high address must be contained within the region"); | |
| 745 assert(lower_high_boundary() <= middle_high() && | |
| 746 middle_high() <= middle_high_boundary(), | |
| 747 "high address must be contained within the region"); | |
| 748 assert(middle_high_boundary() <= upper_high() && | |
| 749 upper_high() <= upper_high_boundary(), | |
| 750 "high address must be contained within the region"); | |
| 751 assert(low() >= low_boundary(), "low"); | |
| 752 assert(low_boundary() <= lower_high_boundary(), "lower high boundary"); | |
| 753 assert(upper_high_boundary() <= high_boundary(), "upper high boundary"); | |
| 754 assert(high() <= upper_high(), "upper high"); | |
| 755 } | |
| 756 | |
|
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757 void VirtualSpace::print_on(outputStream* out) { |
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758 out->print ("Virtual space:"); |
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759 if (special()) out->print(" (pinned in memory)"); |
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760 out->cr(); |
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761 out->print_cr(" - committed: " SIZE_FORMAT, committed_size()); |
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762 out->print_cr(" - reserved: " SIZE_FORMAT, reserved_size()); |
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763 out->print_cr(" - [low, high]: [" INTPTR_FORMAT ", " INTPTR_FORMAT "]", low(), high()); |
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764 out->print_cr(" - [low_b, high_b]: [" INTPTR_FORMAT ", " INTPTR_FORMAT "]", low_boundary(), high_boundary()); |
| 0 | 765 } |
| 766 | |
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767 void VirtualSpace::print() { |
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768 print_on(tty); |
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769 } |
|
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770 |
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771 /////////////// Unit tests /////////////// |
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772 |
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773 #ifndef PRODUCT |
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774 |
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775 #define test_log(...) \ |
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776 do {\ |
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777 if (VerboseInternalVMTests) { \ |
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778 tty->print_cr(__VA_ARGS__); \ |
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779 tty->flush(); \ |
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780 }\ |
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781 } while (false) |
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782 |
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783 class TestReservedSpace : AllStatic { |
|
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784 public: |
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785 static void small_page_write(void* addr, size_t size) { |
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786 size_t page_size = os::vm_page_size(); |
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787 |
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788 char* end = (char*)addr + size; |
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789 for (char* p = (char*)addr; p < end; p += page_size) { |
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790 *p = 1; |
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791 } |
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792 } |
|
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793 |
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794 static void release_memory_for_test(ReservedSpace rs) { |
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795 if (rs.special()) { |
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796 guarantee(os::release_memory_special(rs.base(), rs.size()), "Shouldn't fail"); |
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797 } else { |
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798 guarantee(os::release_memory(rs.base(), rs.size()), "Shouldn't fail"); |
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799 } |
|
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|
800 } |
|
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|
801 |
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802 static void test_reserved_space1(size_t size, size_t alignment) { |
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803 test_log("test_reserved_space1(%p)", (void*) (uintptr_t) size); |
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804 |
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805 assert(is_size_aligned(size, alignment), "Incorrect input parameters"); |
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806 |
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807 ReservedSpace rs(size, // size |
|
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808 alignment, // alignment |
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809 UseLargePages, // large |
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810 NULL, // requested_address |
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811 0); // noacces_prefix |
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812 |
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813 test_log(" rs.special() == %d", rs.special()); |
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814 |
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815 assert(rs.base() != NULL, "Must be"); |
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816 assert(rs.size() == size, "Must be"); |
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817 |
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818 assert(is_ptr_aligned(rs.base(), alignment), "aligned sizes should always give aligned addresses"); |
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819 assert(is_size_aligned(rs.size(), alignment), "aligned sizes should always give aligned addresses"); |
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820 |
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821 if (rs.special()) { |
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822 small_page_write(rs.base(), size); |
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823 } |
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824 |
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825 release_memory_for_test(rs); |
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826 } |
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827 |
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828 static void test_reserved_space2(size_t size) { |
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829 test_log("test_reserved_space2(%p)", (void*)(uintptr_t)size); |
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830 |
|
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831 assert(is_size_aligned(size, os::vm_allocation_granularity()), "Must be at least AG aligned"); |
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832 |
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|
833 ReservedSpace rs(size); |
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834 |
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835 test_log(" rs.special() == %d", rs.special()); |
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836 |
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|
837 assert(rs.base() != NULL, "Must be"); |
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838 assert(rs.size() == size, "Must be"); |
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839 |
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840 if (rs.special()) { |
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841 small_page_write(rs.base(), size); |
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842 } |
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|
843 |
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|
844 release_memory_for_test(rs); |
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845 } |
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|
846 |
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|
847 static void test_reserved_space3(size_t size, size_t alignment, bool maybe_large) { |
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848 test_log("test_reserved_space3(%p, %p, %d)", |
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849 (void*)(uintptr_t)size, (void*)(uintptr_t)alignment, maybe_large); |
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850 |
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851 assert(is_size_aligned(size, os::vm_allocation_granularity()), "Must be at least AG aligned"); |
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852 assert(is_size_aligned(size, alignment), "Must be at least aligned against alignment"); |
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853 |
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854 bool large = maybe_large && UseLargePages && size >= os::large_page_size(); |
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855 |
|
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|
856 ReservedSpace rs(size, alignment, large, false); |
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857 |
|
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|
858 test_log(" rs.special() == %d", rs.special()); |
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|
859 |
|
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|
860 assert(rs.base() != NULL, "Must be"); |
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861 assert(rs.size() == size, "Must be"); |
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|
862 |
|
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|
863 if (rs.special()) { |
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864 small_page_write(rs.base(), size); |
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865 } |
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|
866 |
|
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|
867 release_memory_for_test(rs); |
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868 } |
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|
869 |
|
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|
870 |
|
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|
871 static void test_reserved_space1() { |
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872 size_t size = 2 * 1024 * 1024; |
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873 size_t ag = os::vm_allocation_granularity(); |
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|
874 |
|
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|
875 test_reserved_space1(size, ag); |
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|
876 test_reserved_space1(size * 2, ag); |
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|
877 test_reserved_space1(size * 10, ag); |
|
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|
878 } |
|
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|
879 |
|
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|
880 static void test_reserved_space2() { |
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|
881 size_t size = 2 * 1024 * 1024; |
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882 size_t ag = os::vm_allocation_granularity(); |
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|
883 |
|
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|
884 test_reserved_space2(size * 1); |
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|
885 test_reserved_space2(size * 2); |
|
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|
886 test_reserved_space2(size * 10); |
|
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|
887 test_reserved_space2(ag); |
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|
888 test_reserved_space2(size - ag); |
|
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|
889 test_reserved_space2(size); |
|
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|
890 test_reserved_space2(size + ag); |
|
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|
891 test_reserved_space2(size * 2); |
|
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|
892 test_reserved_space2(size * 2 - ag); |
|
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|
893 test_reserved_space2(size * 2 + ag); |
|
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|
894 test_reserved_space2(size * 3); |
|
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|
895 test_reserved_space2(size * 3 - ag); |
|
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|
896 test_reserved_space2(size * 3 + ag); |
|
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|
897 test_reserved_space2(size * 10); |
|
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|
898 test_reserved_space2(size * 10 + size / 2); |
|
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|
899 } |
|
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|
900 |
|
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|
901 static void test_reserved_space3() { |
|
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|
902 size_t ag = os::vm_allocation_granularity(); |
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|
903 |
|
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|
904 test_reserved_space3(ag, ag , false); |
|
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|
905 test_reserved_space3(ag * 2, ag , false); |
|
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|
906 test_reserved_space3(ag * 3, ag , false); |
|
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|
907 test_reserved_space3(ag * 2, ag * 2, false); |
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|
908 test_reserved_space3(ag * 4, ag * 2, false); |
|
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|
909 test_reserved_space3(ag * 8, ag * 2, false); |
|
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|
910 test_reserved_space3(ag * 4, ag * 4, false); |
|
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|
911 test_reserved_space3(ag * 8, ag * 4, false); |
|
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|
912 test_reserved_space3(ag * 16, ag * 4, false); |
|
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|
913 |
|
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|
914 if (UseLargePages) { |
|
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|
915 size_t lp = os::large_page_size(); |
|
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|
916 |
|
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|
917 // Without large pages |
|
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|
918 test_reserved_space3(lp, ag * 4, false); |
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|
919 test_reserved_space3(lp * 2, ag * 4, false); |
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|
920 test_reserved_space3(lp * 4, ag * 4, false); |
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|
921 test_reserved_space3(lp, lp , false); |
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|
922 test_reserved_space3(lp * 2, lp , false); |
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|
923 test_reserved_space3(lp * 3, lp , false); |
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|
924 test_reserved_space3(lp * 2, lp * 2, false); |
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|
925 test_reserved_space3(lp * 4, lp * 2, false); |
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|
926 test_reserved_space3(lp * 8, lp * 2, false); |
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|
927 |
|
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|
928 // With large pages |
|
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|
929 test_reserved_space3(lp, ag * 4 , true); |
|
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|
930 test_reserved_space3(lp * 2, ag * 4, true); |
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|
931 test_reserved_space3(lp * 4, ag * 4, true); |
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|
932 test_reserved_space3(lp, lp , true); |
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|
933 test_reserved_space3(lp * 2, lp , true); |
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|
934 test_reserved_space3(lp * 3, lp , true); |
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|
935 test_reserved_space3(lp * 2, lp * 2, true); |
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|
936 test_reserved_space3(lp * 4, lp * 2, true); |
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|
937 test_reserved_space3(lp * 8, lp * 2, true); |
|
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|
938 } |
|
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|
939 } |
|
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|
940 |
|
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|
941 static void test_reserved_space() { |
|
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|
942 test_reserved_space1(); |
|
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|
943 test_reserved_space2(); |
|
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|
944 test_reserved_space3(); |
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|
945 } |
|
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|
946 }; |
|
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|
947 |
|
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948 void TestReservedSpace_test() { |
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949 TestReservedSpace::test_reserved_space(); |
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950 } |
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951 |
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952 #define assert_equals(actual, expected) \ |
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953 assert(actual == expected, \ |
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954 err_msg("Got " SIZE_FORMAT " expected " \ |
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955 SIZE_FORMAT, actual, expected)); |
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956 |
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957 #define assert_ge(value1, value2) \ |
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958 assert(value1 >= value2, \ |
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959 err_msg("'" #value1 "': " SIZE_FORMAT " '" \ |
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960 #value2 "': " SIZE_FORMAT, value1, value2)); |
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961 |
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962 #define assert_lt(value1, value2) \ |
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963 assert(value1 < value2, \ |
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964 err_msg("'" #value1 "': " SIZE_FORMAT " '" \ |
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965 #value2 "': " SIZE_FORMAT, value1, value2)); |
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966 |
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967 |
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968 class TestVirtualSpace : AllStatic { |
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969 enum TestLargePages { |
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970 Default, |
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971 Disable, |
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972 Reserve, |
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973 Commit |
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974 }; |
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975 |
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976 static ReservedSpace reserve_memory(size_t reserve_size_aligned, TestLargePages mode) { |
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977 switch(mode) { |
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978 default: |
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979 case Default: |
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980 case Reserve: |
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981 return ReservedSpace(reserve_size_aligned); |
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982 case Disable: |
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983 case Commit: |
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984 return ReservedSpace(reserve_size_aligned, |
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985 os::vm_allocation_granularity(), |
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986 /* large */ false, /* exec */ false); |
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987 } |
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988 } |
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989 |
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990 static bool initialize_virtual_space(VirtualSpace& vs, ReservedSpace rs, TestLargePages mode) { |
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991 switch(mode) { |
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992 default: |
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993 case Default: |
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994 case Reserve: |
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995 return vs.initialize(rs, 0); |
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996 case Disable: |
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997 return vs.initialize_with_granularity(rs, 0, os::vm_page_size()); |
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998 case Commit: |
| 22976 | 999 return vs.initialize_with_granularity(rs, 0, os::page_size_for_region_unaligned(rs.size(), 1)); |
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1000 } |
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1001 } |
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1002 |
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1003 public: |
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1004 static void test_virtual_space_actual_committed_space(size_t reserve_size, size_t commit_size, |
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1005 TestLargePages mode = Default) { |
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1006 size_t granularity = os::vm_allocation_granularity(); |
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1007 size_t reserve_size_aligned = align_size_up(reserve_size, granularity); |
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1008 |
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1009 ReservedSpace reserved = reserve_memory(reserve_size_aligned, mode); |
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1010 |
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1011 assert(reserved.is_reserved(), "Must be"); |
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1012 |
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1013 VirtualSpace vs; |
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1014 bool initialized = initialize_virtual_space(vs, reserved, mode); |
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1015 assert(initialized, "Failed to initialize VirtualSpace"); |
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1016 |
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1017 vs.expand_by(commit_size, false); |
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1018 |
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1019 if (vs.special()) { |
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1020 assert_equals(vs.actual_committed_size(), reserve_size_aligned); |
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1021 } else { |
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1022 assert_ge(vs.actual_committed_size(), commit_size); |
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1023 // Approximate the commit granularity. |
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1024 // Make sure that we don't commit using large pages |
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1025 // if large pages has been disabled for this VirtualSpace. |
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1026 size_t commit_granularity = (mode == Disable || !UseLargePages) ? |
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1027 os::vm_page_size() : os::large_page_size(); |
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1028 assert_lt(vs.actual_committed_size(), commit_size + commit_granularity); |
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1029 } |
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1030 |
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1031 reserved.release(); |
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1032 } |
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1033 |
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1034 static void test_virtual_space_actual_committed_space_one_large_page() { |
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1035 if (!UseLargePages) { |
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1036 return; |
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1037 } |
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1038 |
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1039 size_t large_page_size = os::large_page_size(); |
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1040 |
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1041 ReservedSpace reserved(large_page_size, large_page_size, true, false); |
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1042 |
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1043 assert(reserved.is_reserved(), "Must be"); |
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1044 |
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1045 VirtualSpace vs; |
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1046 bool initialized = vs.initialize(reserved, 0); |
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1047 assert(initialized, "Failed to initialize VirtualSpace"); |
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1048 |
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1049 vs.expand_by(large_page_size, false); |
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1050 |
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1051 assert_equals(vs.actual_committed_size(), large_page_size); |
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1052 |
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1053 reserved.release(); |
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1054 } |
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1055 |
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1056 static void test_virtual_space_actual_committed_space() { |
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1057 test_virtual_space_actual_committed_space(4 * K, 0); |
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1058 test_virtual_space_actual_committed_space(4 * K, 4 * K); |
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1059 test_virtual_space_actual_committed_space(8 * K, 0); |
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1060 test_virtual_space_actual_committed_space(8 * K, 4 * K); |
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1061 test_virtual_space_actual_committed_space(8 * K, 8 * K); |
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1062 test_virtual_space_actual_committed_space(12 * K, 0); |
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1063 test_virtual_space_actual_committed_space(12 * K, 4 * K); |
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1064 test_virtual_space_actual_committed_space(12 * K, 8 * K); |
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1065 test_virtual_space_actual_committed_space(12 * K, 12 * K); |
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1066 test_virtual_space_actual_committed_space(64 * K, 0); |
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1067 test_virtual_space_actual_committed_space(64 * K, 32 * K); |
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1068 test_virtual_space_actual_committed_space(64 * K, 64 * K); |
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1069 test_virtual_space_actual_committed_space(2 * M, 0); |
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1070 test_virtual_space_actual_committed_space(2 * M, 4 * K); |
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1071 test_virtual_space_actual_committed_space(2 * M, 64 * K); |
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1072 test_virtual_space_actual_committed_space(2 * M, 1 * M); |
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1073 test_virtual_space_actual_committed_space(2 * M, 2 * M); |
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1074 test_virtual_space_actual_committed_space(10 * M, 0); |
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1075 test_virtual_space_actual_committed_space(10 * M, 4 * K); |
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1076 test_virtual_space_actual_committed_space(10 * M, 8 * K); |
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1077 test_virtual_space_actual_committed_space(10 * M, 1 * M); |
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1078 test_virtual_space_actual_committed_space(10 * M, 2 * M); |
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1079 test_virtual_space_actual_committed_space(10 * M, 5 * M); |
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1080 test_virtual_space_actual_committed_space(10 * M, 10 * M); |
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1081 } |
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1082 |
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1083 static void test_virtual_space_disable_large_pages() { |
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1084 if (!UseLargePages) { |
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1085 return; |
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1086 } |
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1087 // These test cases verify that if we force VirtualSpace to disable large pages |
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1088 test_virtual_space_actual_committed_space(10 * M, 0, Disable); |
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1089 test_virtual_space_actual_committed_space(10 * M, 4 * K, Disable); |
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1090 test_virtual_space_actual_committed_space(10 * M, 8 * K, Disable); |
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1091 test_virtual_space_actual_committed_space(10 * M, 1 * M, Disable); |
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1092 test_virtual_space_actual_committed_space(10 * M, 2 * M, Disable); |
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1093 test_virtual_space_actual_committed_space(10 * M, 5 * M, Disable); |
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1094 test_virtual_space_actual_committed_space(10 * M, 10 * M, Disable); |
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1095 |
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1096 test_virtual_space_actual_committed_space(10 * M, 0, Reserve); |
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1097 test_virtual_space_actual_committed_space(10 * M, 4 * K, Reserve); |
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1098 test_virtual_space_actual_committed_space(10 * M, 8 * K, Reserve); |
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1099 test_virtual_space_actual_committed_space(10 * M, 1 * M, Reserve); |
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1100 test_virtual_space_actual_committed_space(10 * M, 2 * M, Reserve); |
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1101 test_virtual_space_actual_committed_space(10 * M, 5 * M, Reserve); |
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1102 test_virtual_space_actual_committed_space(10 * M, 10 * M, Reserve); |
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1103 |
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1104 test_virtual_space_actual_committed_space(10 * M, 0, Commit); |
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1105 test_virtual_space_actual_committed_space(10 * M, 4 * K, Commit); |
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1106 test_virtual_space_actual_committed_space(10 * M, 8 * K, Commit); |
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1107 test_virtual_space_actual_committed_space(10 * M, 1 * M, Commit); |
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1108 test_virtual_space_actual_committed_space(10 * M, 2 * M, Commit); |
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1109 test_virtual_space_actual_committed_space(10 * M, 5 * M, Commit); |
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1110 test_virtual_space_actual_committed_space(10 * M, 10 * M, Commit); |
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1111 } |
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1112 |
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1113 static void test_virtual_space() { |
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1114 test_virtual_space_actual_committed_space(); |
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1115 test_virtual_space_actual_committed_space_one_large_page(); |
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1116 test_virtual_space_disable_large_pages(); |
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1117 } |
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1118 }; |
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1119 |
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1120 void TestVirtualSpace_test() { |
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1121 TestVirtualSpace::test_virtual_space(); |
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1122 } |
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1123 |
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1124 #endif // PRODUCT |
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1125 |
| 0 | 1126 #endif |