Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/virtualspace.cpp @ 14460:8a9bb7821e28
Merge
| author | kvn |
|---|---|
| date | Wed, 19 Feb 2014 12:08:49 -0800 |
| parents | e5d78f318aec 2b8e28fdf503 |
| children | 4ca6dc0799b6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #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 |
| 46 | |
| 47 // ReservedSpace | |
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48 |
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49 // Dummy constructor |
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50 ReservedSpace::ReservedSpace() : _base(NULL), _size(0), _noaccess_prefix(0), |
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51 _alignment(0), _special(false), _executable(false) { |
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52 } |
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53 |
| 0 | 54 ReservedSpace::ReservedSpace(size_t size) { |
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55 size_t page_size = os::page_size_for_region(size, size, 1); |
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56 bool large_pages = page_size != (size_t)os::vm_page_size(); |
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57 // Don't force the alignment to be large page aligned, |
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58 // since that will waste memory. |
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59 size_t alignment = os::vm_allocation_granularity(); |
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60 initialize(size, alignment, large_pages, NULL, 0, false); |
| 0 | 61 } |
| 62 | |
| 63 ReservedSpace::ReservedSpace(size_t size, size_t alignment, | |
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64 bool large, |
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65 char* requested_address, |
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66 const size_t noaccess_prefix) { |
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67 initialize(size+noaccess_prefix, alignment, large, requested_address, |
| 656 | 68 noaccess_prefix, false); |
| 69 } | |
| 70 | |
| 71 ReservedSpace::ReservedSpace(size_t size, size_t alignment, | |
| 72 bool large, | |
| 73 bool executable) { | |
| 74 initialize(size, alignment, large, NULL, 0, executable); | |
| 0 | 75 } |
| 76 | |
| 1618 | 77 // Helper method. |
| 78 static bool failed_to_reserve_as_requested(char* base, char* requested_address, | |
| 79 const size_t size, bool special) | |
| 80 { | |
| 81 if (base == requested_address || requested_address == NULL) | |
| 82 return false; // did not fail | |
| 83 | |
| 84 if (base != NULL) { | |
| 85 // Different reserve address may be acceptable in other cases | |
| 86 // but for compressed oops heap should be at requested address. | |
| 87 assert(UseCompressedOops, "currently requested address used only for compressed oops"); | |
| 88 if (PrintCompressedOopsMode) { | |
| 89 tty->cr(); | |
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90 tty->print_cr("Reserved memory not at requested address: " PTR_FORMAT " vs " PTR_FORMAT, base, requested_address); |
| 1618 | 91 } |
| 92 // OS ignored requested address. Try different address. | |
| 93 if (special) { | |
| 94 if (!os::release_memory_special(base, size)) { | |
| 95 fatal("os::release_memory_special failed"); | |
| 96 } | |
| 97 } else { | |
| 98 if (!os::release_memory(base, size)) { | |
| 99 fatal("os::release_memory failed"); | |
| 100 } | |
| 101 } | |
| 102 } | |
| 103 return true; | |
| 104 } | |
| 105 | |
| 0 | 106 void ReservedSpace::initialize(size_t size, size_t alignment, bool large, |
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107 char* requested_address, |
| 656 | 108 const size_t noaccess_prefix, |
| 109 bool executable) { | |
| 0 | 110 const size_t granularity = os::vm_allocation_granularity(); |
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111 assert((size & (granularity - 1)) == 0, |
| 0 | 112 "size not aligned to os::vm_allocation_granularity()"); |
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113 assert((alignment & (granularity - 1)) == 0, |
| 0 | 114 "alignment not aligned to os::vm_allocation_granularity()"); |
| 115 assert(alignment == 0 || is_power_of_2((intptr_t)alignment), | |
| 116 "not a power of 2"); | |
| 117 | |
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118 alignment = MAX2(alignment, (size_t)os::vm_page_size()); |
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119 |
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120 // Assert that if noaccess_prefix is used, it is the same as alignment. |
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121 assert(noaccess_prefix == 0 || |
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122 noaccess_prefix == alignment, "noaccess prefix wrong"); |
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123 |
| 0 | 124 _base = NULL; |
| 125 _size = 0; | |
| 126 _special = false; | |
| 656 | 127 _executable = executable; |
| 0 | 128 _alignment = 0; |
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129 _noaccess_prefix = 0; |
| 0 | 130 if (size == 0) { |
| 131 return; | |
| 132 } | |
| 133 | |
| 134 // If OS doesn't support demand paging for large page memory, we need | |
| 135 // to use reserve_memory_special() to reserve and pin the entire region. | |
| 136 bool special = large && !os::can_commit_large_page_memory(); | |
| 137 char* base = NULL; | |
| 138 | |
| 1618 | 139 if (requested_address != 0) { |
| 140 requested_address -= noaccess_prefix; // adjust requested address | |
| 141 assert(requested_address != NULL, "huge noaccess prefix?"); | |
| 142 } | |
| 143 | |
| 0 | 144 if (special) { |
| 145 | |
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146 base = os::reserve_memory_special(size, alignment, requested_address, executable); |
| 0 | 147 |
| 148 if (base != NULL) { | |
| 1618 | 149 if (failed_to_reserve_as_requested(base, requested_address, size, true)) { |
| 150 // OS ignored requested address. Try different address. | |
| 151 return; | |
| 152 } | |
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153 // Check alignment constraints. |
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154 assert((uintptr_t) base % alignment == 0, |
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155 err_msg("Large pages returned a non-aligned address, base: " |
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156 PTR_FORMAT " alignment: " PTR_FORMAT, |
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157 base, (void*)(uintptr_t)alignment)); |
| 0 | 158 _special = true; |
| 159 } else { | |
| 160 // failed; try to reserve regular memory below | |
| 1618 | 161 if (UseLargePages && (!FLAG_IS_DEFAULT(UseLargePages) || |
| 162 !FLAG_IS_DEFAULT(LargePageSizeInBytes))) { | |
| 163 if (PrintCompressedOopsMode) { | |
| 164 tty->cr(); | |
| 165 tty->print_cr("Reserve regular memory without large pages."); | |
| 166 } | |
| 167 } | |
| 0 | 168 } |
| 169 } | |
| 170 | |
| 171 if (base == NULL) { | |
| 172 // Optimistically assume that the OSes returns an aligned base pointer. | |
| 173 // When reserving a large address range, most OSes seem to align to at | |
| 174 // least 64K. | |
| 175 | |
| 176 // If the memory was requested at a particular address, use | |
| 177 // os::attempt_reserve_memory_at() to avoid over mapping something | |
| 178 // important. If available space is not detected, return NULL. | |
| 179 | |
| 180 if (requested_address != 0) { | |
| 1618 | 181 base = os::attempt_reserve_memory_at(size, requested_address); |
| 182 if (failed_to_reserve_as_requested(base, requested_address, size, false)) { | |
| 183 // OS ignored requested address. Try different address. | |
| 184 base = NULL; | |
| 185 } | |
| 0 | 186 } else { |
| 187 base = os::reserve_memory(size, NULL, alignment); | |
| 188 } | |
| 189 | |
| 190 if (base == NULL) return; | |
| 191 | |
| 192 // Check alignment constraints | |
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193 if ((((size_t)base + noaccess_prefix) & (alignment - 1)) != 0) { |
| 0 | 194 // Base not aligned, retry |
| 195 if (!os::release_memory(base, size)) fatal("os::release_memory failed"); | |
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196 // Make sure that size is aligned |
| 0 | 197 size = align_size_up(size, alignment); |
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198 base = os::reserve_memory_aligned(size, alignment); |
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199 |
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200 if (requested_address != 0 && |
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201 failed_to_reserve_as_requested(base, requested_address, size, false)) { |
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202 // As a result of the alignment constraints, the allocated base differs |
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203 // from the requested address. Return back to the caller who can |
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204 // take remedial action (like try again without a requested address). |
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205 assert(_base == NULL, "should be"); |
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206 return; |
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207 } |
| 0 | 208 } |
| 209 } | |
| 210 // Done | |
| 211 _base = base; | |
| 212 _size = size; | |
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213 _alignment = alignment; |
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214 _noaccess_prefix = noaccess_prefix; |
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215 |
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216 // Assert that if noaccess_prefix is used, it is the same as alignment. |
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217 assert(noaccess_prefix == 0 || |
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218 noaccess_prefix == _alignment, "noaccess prefix wrong"); |
| 0 | 219 |
| 220 assert(markOopDesc::encode_pointer_as_mark(_base)->decode_pointer() == _base, | |
| 14358 | 221 "area must be distinguishable from marks for mark-sweep"); |
| 0 | 222 assert(markOopDesc::encode_pointer_as_mark(&_base[size])->decode_pointer() == &_base[size], |
| 14358 | 223 "area must be distinguishable from marks for mark-sweep"); |
| 0 | 224 } |
| 225 | |
| 226 | |
| 227 ReservedSpace::ReservedSpace(char* base, size_t size, size_t alignment, | |
| 656 | 228 bool special, bool executable) { |
| 0 | 229 assert((size % os::vm_allocation_granularity()) == 0, |
| 230 "size not allocation aligned"); | |
| 231 _base = base; | |
| 232 _size = size; | |
| 233 _alignment = alignment; | |
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234 _noaccess_prefix = 0; |
| 0 | 235 _special = special; |
| 656 | 236 _executable = executable; |
| 0 | 237 } |
| 238 | |
| 239 | |
| 240 ReservedSpace ReservedSpace::first_part(size_t partition_size, size_t alignment, | |
| 241 bool split, bool realloc) { | |
| 242 assert(partition_size <= size(), "partition failed"); | |
| 243 if (split) { | |
| 656 | 244 os::split_reserved_memory(base(), size(), partition_size, realloc); |
| 0 | 245 } |
| 656 | 246 ReservedSpace result(base(), partition_size, alignment, special(), |
| 247 executable()); | |
| 0 | 248 return result; |
| 249 } | |
| 250 | |
| 251 | |
| 252 ReservedSpace | |
| 253 ReservedSpace::last_part(size_t partition_size, size_t alignment) { | |
| 254 assert(partition_size <= size(), "partition failed"); | |
| 255 ReservedSpace result(base() + partition_size, size() - partition_size, | |
| 656 | 256 alignment, special(), executable()); |
| 0 | 257 return result; |
| 258 } | |
| 259 | |
| 260 | |
| 261 size_t ReservedSpace::page_align_size_up(size_t size) { | |
| 262 return align_size_up(size, os::vm_page_size()); | |
| 263 } | |
| 264 | |
| 265 | |
| 266 size_t ReservedSpace::page_align_size_down(size_t size) { | |
| 267 return align_size_down(size, os::vm_page_size()); | |
| 268 } | |
| 269 | |
| 270 | |
| 271 size_t ReservedSpace::allocation_align_size_up(size_t size) { | |
| 272 return align_size_up(size, os::vm_allocation_granularity()); | |
| 273 } | |
| 274 | |
| 275 | |
| 276 size_t ReservedSpace::allocation_align_size_down(size_t size) { | |
| 277 return align_size_down(size, os::vm_allocation_granularity()); | |
| 278 } | |
| 279 | |
| 280 | |
| 281 void ReservedSpace::release() { | |
| 282 if (is_reserved()) { | |
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283 char *real_base = _base - _noaccess_prefix; |
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284 const size_t real_size = _size + _noaccess_prefix; |
| 0 | 285 if (special()) { |
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286 os::release_memory_special(real_base, real_size); |
| 0 | 287 } else{ |
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288 os::release_memory(real_base, real_size); |
| 0 | 289 } |
| 290 _base = NULL; | |
| 291 _size = 0; | |
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292 _noaccess_prefix = 0; |
| 0 | 293 _special = false; |
| 656 | 294 _executable = false; |
| 0 | 295 } |
| 296 } | |
| 297 | |
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298 void ReservedSpace::protect_noaccess_prefix(const size_t size) { |
| 1618 | 299 assert( (_noaccess_prefix != 0) == (UseCompressedOops && _base != NULL && |
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300 (Universe::narrow_oop_base() != NULL) && |
| 1618 | 301 Universe::narrow_oop_use_implicit_null_checks()), |
| 302 "noaccess_prefix should be used only with non zero based compressed oops"); | |
| 303 | |
| 304 // If there is no noaccess prefix, return. | |
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305 if (_noaccess_prefix == 0) return; |
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306 |
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307 assert(_noaccess_prefix >= (size_t)os::vm_page_size(), |
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308 "must be at least page size big"); |
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309 |
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310 // Protect memory at the base of the allocated region. |
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311 // If special, the page was committed (only matters on windows) |
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312 if (!os::protect_memory(_base, _noaccess_prefix, os::MEM_PROT_NONE, |
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313 _special)) { |
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314 fatal("cannot protect protection page"); |
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315 } |
| 1618 | 316 if (PrintCompressedOopsMode) { |
| 317 tty->cr(); | |
| 318 tty->print_cr("Protected page at the reserved heap base: " PTR_FORMAT " / " INTX_FORMAT " bytes", _base, _noaccess_prefix); | |
| 319 } | |
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320 |
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321 _base += _noaccess_prefix; |
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322 _size -= _noaccess_prefix; |
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323 assert((size == _size) && ((uintptr_t)_base % _alignment == 0), |
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324 "must be exactly of required size and alignment"); |
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325 } |
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326 |
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327 ReservedHeapSpace::ReservedHeapSpace(size_t size, size_t alignment, |
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328 bool large, char* requested_address) : |
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329 ReservedSpace(size, alignment, large, |
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330 requested_address, |
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331 (UseCompressedOops && (Universe::narrow_oop_base() != NULL) && |
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332 Universe::narrow_oop_use_implicit_null_checks()) ? |
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333 lcm(os::vm_page_size(), alignment) : 0) { |
| 6197 | 334 if (base() > 0) { |
| 335 MemTracker::record_virtual_memory_type((address)base(), mtJavaHeap); | |
| 336 } | |
| 337 | |
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338 // Only reserved space for the java heap should have a noaccess_prefix |
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339 // if using compressed oops. |
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340 protect_noaccess_prefix(size); |
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341 } |
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342 |
| 656 | 343 // Reserve space for code segment. Same as Java heap only we mark this as |
| 344 // executable. | |
| 345 ReservedCodeSpace::ReservedCodeSpace(size_t r_size, | |
| 346 size_t rs_align, | |
| 347 bool large) : | |
| 348 ReservedSpace(r_size, rs_align, large, /*executable*/ true) { | |
| 6197 | 349 MemTracker::record_virtual_memory_type((address)base(), mtCode); |
| 656 | 350 } |
| 351 | |
| 0 | 352 // VirtualSpace |
| 353 | |
| 354 VirtualSpace::VirtualSpace() { | |
| 355 _low_boundary = NULL; | |
| 356 _high_boundary = NULL; | |
| 357 _low = NULL; | |
| 358 _high = NULL; | |
| 359 _lower_high = NULL; | |
| 360 _middle_high = NULL; | |
| 361 _upper_high = NULL; | |
| 362 _lower_high_boundary = NULL; | |
| 363 _middle_high_boundary = NULL; | |
| 364 _upper_high_boundary = NULL; | |
| 365 _lower_alignment = 0; | |
| 366 _middle_alignment = 0; | |
| 367 _upper_alignment = 0; | |
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368 _special = false; |
| 656 | 369 _executable = false; |
| 0 | 370 } |
| 371 | |
| 372 | |
| 373 bool VirtualSpace::initialize(ReservedSpace rs, size_t committed_size) { | |
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374 const size_t max_commit_granularity = os::page_size_for_region(rs.size(), rs.size(), 1); |
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375 return initialize_with_granularity(rs, committed_size, max_commit_granularity); |
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376 } |
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377 |
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378 bool VirtualSpace::initialize_with_granularity(ReservedSpace rs, size_t committed_size, size_t max_commit_granularity) { |
| 0 | 379 if(!rs.is_reserved()) return false; // allocation failed. |
| 380 assert(_low_boundary == NULL, "VirtualSpace already initialized"); | |
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381 assert(max_commit_granularity > 0, "Granularity must be non-zero."); |
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382 |
| 0 | 383 _low_boundary = rs.base(); |
| 384 _high_boundary = low_boundary() + rs.size(); | |
| 385 | |
| 386 _low = low_boundary(); | |
| 387 _high = low(); | |
| 388 | |
| 389 _special = rs.special(); | |
| 656 | 390 _executable = rs.executable(); |
| 0 | 391 |
| 392 // When a VirtualSpace begins life at a large size, make all future expansion | |
| 393 // and shrinking occur aligned to a granularity of large pages. This avoids | |
| 394 // fragmentation of physical addresses that inhibits the use of large pages | |
| 395 // by the OS virtual memory system. Empirically, we see that with a 4MB | |
| 396 // page size, the only spaces that get handled this way are codecache and | |
| 397 // the heap itself, both of which provide a substantial performance | |
| 398 // boost in many benchmarks when covered by large pages. | |
| 399 // | |
| 400 // No attempt is made to force large page alignment at the very top and | |
| 401 // bottom of the space if they are not aligned so already. | |
| 402 _lower_alignment = os::vm_page_size(); | |
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403 _middle_alignment = max_commit_granularity; |
| 0 | 404 _upper_alignment = os::vm_page_size(); |
| 405 | |
| 406 // End of each region | |
| 407 _lower_high_boundary = (char*) round_to((intptr_t) low_boundary(), middle_alignment()); | |
| 408 _middle_high_boundary = (char*) round_down((intptr_t) high_boundary(), middle_alignment()); | |
| 409 _upper_high_boundary = high_boundary(); | |
| 410 | |
| 411 // High address of each region | |
| 412 _lower_high = low_boundary(); | |
| 413 _middle_high = lower_high_boundary(); | |
| 414 _upper_high = middle_high_boundary(); | |
| 415 | |
| 416 // commit to initial size | |
| 417 if (committed_size > 0) { | |
| 418 if (!expand_by(committed_size)) { | |
| 419 return false; | |
| 420 } | |
| 421 } | |
| 422 return true; | |
| 423 } | |
| 424 | |
| 425 | |
| 426 VirtualSpace::~VirtualSpace() { | |
| 427 release(); | |
| 428 } | |
| 429 | |
| 430 | |
| 431 void VirtualSpace::release() { | |
|
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432 // This does not release memory it never reserved. |
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433 // Caller must release via rs.release(); |
| 0 | 434 _low_boundary = NULL; |
| 435 _high_boundary = NULL; | |
| 436 _low = NULL; | |
| 437 _high = NULL; | |
| 438 _lower_high = NULL; | |
| 439 _middle_high = NULL; | |
| 440 _upper_high = NULL; | |
| 441 _lower_high_boundary = NULL; | |
| 442 _middle_high_boundary = NULL; | |
| 443 _upper_high_boundary = NULL; | |
| 444 _lower_alignment = 0; | |
| 445 _middle_alignment = 0; | |
| 446 _upper_alignment = 0; | |
| 447 _special = false; | |
| 656 | 448 _executable = false; |
| 0 | 449 } |
| 450 | |
| 451 | |
| 452 size_t VirtualSpace::committed_size() const { | |
| 453 return pointer_delta(high(), low(), sizeof(char)); | |
| 454 } | |
| 455 | |
| 456 | |
| 457 size_t VirtualSpace::reserved_size() const { | |
| 458 return pointer_delta(high_boundary(), low_boundary(), sizeof(char)); | |
| 459 } | |
| 460 | |
| 461 | |
| 462 size_t VirtualSpace::uncommitted_size() const { | |
| 463 return reserved_size() - committed_size(); | |
| 464 } | |
| 465 | |
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466 size_t VirtualSpace::actual_committed_size() const { |
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467 // Special VirtualSpaces commit all reserved space up front. |
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468 if (special()) { |
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469 return reserved_size(); |
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470 } |
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471 |
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472 size_t committed_low = pointer_delta(_lower_high, _low_boundary, sizeof(char)); |
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473 size_t committed_middle = pointer_delta(_middle_high, _lower_high_boundary, sizeof(char)); |
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474 size_t committed_high = pointer_delta(_upper_high, _middle_high_boundary, sizeof(char)); |
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475 |
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476 #ifdef ASSERT |
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477 size_t lower = pointer_delta(_lower_high_boundary, _low_boundary, sizeof(char)); |
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478 size_t middle = pointer_delta(_middle_high_boundary, _lower_high_boundary, sizeof(char)); |
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479 size_t upper = pointer_delta(_upper_high_boundary, _middle_high_boundary, sizeof(char)); |
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480 |
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481 if (committed_high > 0) { |
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482 assert(committed_low == lower, "Must be"); |
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483 assert(committed_middle == middle, "Must be"); |
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484 } |
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485 |
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486 if (committed_middle > 0) { |
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487 assert(committed_low == lower, "Must be"); |
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488 } |
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489 if (committed_middle < middle) { |
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490 assert(committed_high == 0, "Must be"); |
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491 } |
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492 |
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493 if (committed_low < lower) { |
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494 assert(committed_high == 0, "Must be"); |
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495 assert(committed_middle == 0, "Must be"); |
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496 } |
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497 #endif |
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498 |
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499 return committed_low + committed_middle + committed_high; |
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500 } |
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501 |
| 0 | 502 |
| 503 bool VirtualSpace::contains(const void* p) const { | |
| 504 return low() <= (const char*) p && (const char*) p < high(); | |
| 505 } | |
| 506 | |
| 507 /* | |
| 508 First we need to determine if a particular virtual space is using large | |
| 509 pages. This is done at the initialize function and only virtual spaces | |
| 510 that are larger than LargePageSizeInBytes use large pages. Once we | |
| 511 have determined this, all expand_by and shrink_by calls must grow and | |
| 512 shrink by large page size chunks. If a particular request | |
| 513 is within the current large page, the call to commit and uncommit memory | |
| 514 can be ignored. In the case that the low and high boundaries of this | |
| 515 space is not large page aligned, the pages leading to the first large | |
| 516 page address and the pages after the last large page address must be | |
| 517 allocated with default pages. | |
| 518 */ | |
| 519 bool VirtualSpace::expand_by(size_t bytes, bool pre_touch) { | |
| 520 if (uncommitted_size() < bytes) return false; | |
| 521 | |
| 522 if (special()) { | |
| 523 // don't commit memory if the entire space is pinned in memory | |
| 524 _high += bytes; | |
| 525 return true; | |
| 526 } | |
| 527 | |
| 528 char* previous_high = high(); | |
| 529 char* unaligned_new_high = high() + bytes; | |
| 530 assert(unaligned_new_high <= high_boundary(), | |
| 531 "cannot expand by more than upper boundary"); | |
| 532 | |
| 533 // Calculate where the new high for each of the regions should be. If | |
| 534 // the low_boundary() and high_boundary() are LargePageSizeInBytes aligned | |
| 535 // then the unaligned lower and upper new highs would be the | |
| 536 // lower_high() and upper_high() respectively. | |
| 537 char* unaligned_lower_new_high = | |
| 538 MIN2(unaligned_new_high, lower_high_boundary()); | |
| 539 char* unaligned_middle_new_high = | |
| 540 MIN2(unaligned_new_high, middle_high_boundary()); | |
| 541 char* unaligned_upper_new_high = | |
| 542 MIN2(unaligned_new_high, upper_high_boundary()); | |
| 543 | |
| 544 // Align the new highs based on the regions alignment. lower and upper | |
| 545 // alignment will always be default page size. middle alignment will be | |
| 546 // LargePageSizeInBytes if the actual size of the virtual space is in | |
| 547 // fact larger than LargePageSizeInBytes. | |
| 548 char* aligned_lower_new_high = | |
| 549 (char*) round_to((intptr_t) unaligned_lower_new_high, lower_alignment()); | |
| 550 char* aligned_middle_new_high = | |
| 551 (char*) round_to((intptr_t) unaligned_middle_new_high, middle_alignment()); | |
| 552 char* aligned_upper_new_high = | |
| 553 (char*) round_to((intptr_t) unaligned_upper_new_high, upper_alignment()); | |
| 554 | |
| 555 // Determine which regions need to grow in this expand_by call. | |
| 556 // If you are growing in the lower region, high() must be in that | |
| 14309 | 557 // region so calculate the size based on high(). For the middle and |
| 0 | 558 // upper regions, determine the starting point of growth based on the |
| 559 // location of high(). By getting the MAX of the region's low address | |
| 14309 | 560 // (or the previous region's high address) and high(), we can tell if it |
| 0 | 561 // is an intra or inter region growth. |
| 562 size_t lower_needs = 0; | |
| 563 if (aligned_lower_new_high > lower_high()) { | |
| 564 lower_needs = | |
| 565 pointer_delta(aligned_lower_new_high, lower_high(), sizeof(char)); | |
| 566 } | |
| 567 size_t middle_needs = 0; | |
| 568 if (aligned_middle_new_high > middle_high()) { | |
| 569 middle_needs = | |
| 570 pointer_delta(aligned_middle_new_high, middle_high(), sizeof(char)); | |
| 571 } | |
| 572 size_t upper_needs = 0; | |
| 573 if (aligned_upper_new_high > upper_high()) { | |
| 574 upper_needs = | |
| 575 pointer_delta(aligned_upper_new_high, upper_high(), sizeof(char)); | |
| 576 } | |
| 577 | |
| 578 // Check contiguity. | |
| 579 assert(low_boundary() <= lower_high() && | |
| 580 lower_high() <= lower_high_boundary(), | |
| 581 "high address must be contained within the region"); | |
| 582 assert(lower_high_boundary() <= middle_high() && | |
| 583 middle_high() <= middle_high_boundary(), | |
| 584 "high address must be contained within the region"); | |
| 585 assert(middle_high_boundary() <= upper_high() && | |
| 586 upper_high() <= upper_high_boundary(), | |
| 587 "high address must be contained within the region"); | |
| 588 | |
| 589 // Commit regions | |
| 590 if (lower_needs > 0) { | |
| 591 assert(low_boundary() <= lower_high() && | |
| 592 lower_high() + lower_needs <= lower_high_boundary(), | |
| 593 "must not expand beyond region"); | |
| 656 | 594 if (!os::commit_memory(lower_high(), lower_needs, _executable)) { |
|
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595 debug_only(warning("INFO: os::commit_memory(" PTR_FORMAT |
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596 ", lower_needs=" SIZE_FORMAT ", %d) failed", |
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597 lower_high(), lower_needs, _executable);) |
| 0 | 598 return false; |
| 599 } else { | |
| 600 _lower_high += lower_needs; | |
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601 } |
| 0 | 602 } |
| 603 if (middle_needs > 0) { | |
| 604 assert(lower_high_boundary() <= middle_high() && | |
| 605 middle_high() + middle_needs <= middle_high_boundary(), | |
| 606 "must not expand beyond region"); | |
| 656 | 607 if (!os::commit_memory(middle_high(), middle_needs, middle_alignment(), |
| 608 _executable)) { | |
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609 debug_only(warning("INFO: os::commit_memory(" PTR_FORMAT |
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610 ", middle_needs=" SIZE_FORMAT ", " SIZE_FORMAT |
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611 ", %d) failed", middle_high(), middle_needs, |
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612 middle_alignment(), _executable);) |
| 0 | 613 return false; |
| 614 } | |
| 615 _middle_high += middle_needs; | |
| 616 } | |
| 617 if (upper_needs > 0) { | |
| 618 assert(middle_high_boundary() <= upper_high() && | |
| 619 upper_high() + upper_needs <= upper_high_boundary(), | |
| 620 "must not expand beyond region"); | |
| 656 | 621 if (!os::commit_memory(upper_high(), upper_needs, _executable)) { |
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622 debug_only(warning("INFO: os::commit_memory(" PTR_FORMAT |
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623 ", upper_needs=" SIZE_FORMAT ", %d) failed", |
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624 upper_high(), upper_needs, _executable);) |
| 0 | 625 return false; |
| 626 } else { | |
| 627 _upper_high += upper_needs; | |
| 628 } | |
| 629 } | |
| 630 | |
| 631 if (pre_touch || AlwaysPreTouch) { | |
| 632 int vm_ps = os::vm_page_size(); | |
| 633 for (char* curr = previous_high; | |
| 634 curr < unaligned_new_high; | |
| 635 curr += vm_ps) { | |
| 636 // Note the use of a write here; originally we tried just a read, but | |
| 637 // since the value read was unused, the optimizer removed the read. | |
| 638 // If we ever have a concurrent touchahead thread, we'll want to use | |
| 639 // a read, to avoid the potential of overwriting data (if a mutator | |
| 640 // thread beats the touchahead thread to a page). There are various | |
| 641 // ways of making sure this read is not optimized away: for example, | |
| 642 // generating the code for a read procedure at runtime. | |
| 643 *curr = 0; | |
| 644 } | |
| 645 } | |
| 646 | |
| 647 _high += bytes; | |
| 648 return true; | |
| 649 } | |
| 650 | |
| 651 // A page is uncommitted if the contents of the entire page is deemed unusable. | |
| 652 // Continue to decrement the high() pointer until it reaches a page boundary | |
| 653 // in which case that particular page can now be uncommitted. | |
| 654 void VirtualSpace::shrink_by(size_t size) { | |
| 655 if (committed_size() < size) | |
| 656 fatal("Cannot shrink virtual space to negative size"); | |
| 657 | |
| 658 if (special()) { | |
| 659 // don't uncommit if the entire space is pinned in memory | |
| 660 _high -= size; | |
| 661 return; | |
| 662 } | |
| 663 | |
| 664 char* unaligned_new_high = high() - size; | |
| 665 assert(unaligned_new_high >= low_boundary(), "cannot shrink past lower boundary"); | |
| 666 | |
| 667 // Calculate new unaligned address | |
| 668 char* unaligned_upper_new_high = | |
| 669 MAX2(unaligned_new_high, middle_high_boundary()); | |
| 670 char* unaligned_middle_new_high = | |
| 671 MAX2(unaligned_new_high, lower_high_boundary()); | |
| 672 char* unaligned_lower_new_high = | |
| 673 MAX2(unaligned_new_high, low_boundary()); | |
| 674 | |
| 675 // Align address to region's alignment | |
| 676 char* aligned_upper_new_high = | |
| 677 (char*) round_to((intptr_t) unaligned_upper_new_high, upper_alignment()); | |
| 678 char* aligned_middle_new_high = | |
| 679 (char*) round_to((intptr_t) unaligned_middle_new_high, middle_alignment()); | |
| 680 char* aligned_lower_new_high = | |
| 681 (char*) round_to((intptr_t) unaligned_lower_new_high, lower_alignment()); | |
| 682 | |
| 683 // Determine which regions need to shrink | |
| 684 size_t upper_needs = 0; | |
| 685 if (aligned_upper_new_high < upper_high()) { | |
| 686 upper_needs = | |
| 687 pointer_delta(upper_high(), aligned_upper_new_high, sizeof(char)); | |
| 688 } | |
| 689 size_t middle_needs = 0; | |
| 690 if (aligned_middle_new_high < middle_high()) { | |
| 691 middle_needs = | |
| 692 pointer_delta(middle_high(), aligned_middle_new_high, sizeof(char)); | |
| 693 } | |
| 694 size_t lower_needs = 0; | |
| 695 if (aligned_lower_new_high < lower_high()) { | |
| 696 lower_needs = | |
| 697 pointer_delta(lower_high(), aligned_lower_new_high, sizeof(char)); | |
| 698 } | |
| 699 | |
| 700 // Check contiguity. | |
| 701 assert(middle_high_boundary() <= upper_high() && | |
| 702 upper_high() <= upper_high_boundary(), | |
| 703 "high address must be contained within the region"); | |
| 704 assert(lower_high_boundary() <= middle_high() && | |
| 705 middle_high() <= middle_high_boundary(), | |
| 706 "high address must be contained within the region"); | |
| 707 assert(low_boundary() <= lower_high() && | |
| 708 lower_high() <= lower_high_boundary(), | |
| 709 "high address must be contained within the region"); | |
| 710 | |
| 711 // Uncommit | |
| 712 if (upper_needs > 0) { | |
| 713 assert(middle_high_boundary() <= aligned_upper_new_high && | |
| 714 aligned_upper_new_high + upper_needs <= upper_high_boundary(), | |
| 715 "must not shrink beyond region"); | |
| 716 if (!os::uncommit_memory(aligned_upper_new_high, upper_needs)) { | |
| 717 debug_only(warning("os::uncommit_memory failed")); | |
| 718 return; | |
| 719 } else { | |
| 720 _upper_high -= upper_needs; | |
| 721 } | |
| 722 } | |
| 723 if (middle_needs > 0) { | |
| 724 assert(lower_high_boundary() <= aligned_middle_new_high && | |
| 725 aligned_middle_new_high + middle_needs <= middle_high_boundary(), | |
| 726 "must not shrink beyond region"); | |
| 727 if (!os::uncommit_memory(aligned_middle_new_high, middle_needs)) { | |
| 728 debug_only(warning("os::uncommit_memory failed")); | |
| 729 return; | |
| 730 } else { | |
| 731 _middle_high -= middle_needs; | |
| 732 } | |
| 733 } | |
| 734 if (lower_needs > 0) { | |
| 735 assert(low_boundary() <= aligned_lower_new_high && | |
| 736 aligned_lower_new_high + lower_needs <= lower_high_boundary(), | |
| 737 "must not shrink beyond region"); | |
| 738 if (!os::uncommit_memory(aligned_lower_new_high, lower_needs)) { | |
| 739 debug_only(warning("os::uncommit_memory failed")); | |
| 740 return; | |
| 741 } else { | |
| 742 _lower_high -= lower_needs; | |
| 743 } | |
| 744 } | |
| 745 | |
| 746 _high -= size; | |
| 747 } | |
| 748 | |
| 749 #ifndef PRODUCT | |
| 750 void VirtualSpace::check_for_contiguity() { | |
| 751 // Check contiguity. | |
| 752 assert(low_boundary() <= lower_high() && | |
| 753 lower_high() <= lower_high_boundary(), | |
| 754 "high address must be contained within the region"); | |
| 755 assert(lower_high_boundary() <= middle_high() && | |
| 756 middle_high() <= middle_high_boundary(), | |
| 757 "high address must be contained within the region"); | |
| 758 assert(middle_high_boundary() <= upper_high() && | |
| 759 upper_high() <= upper_high_boundary(), | |
| 760 "high address must be contained within the region"); | |
| 761 assert(low() >= low_boundary(), "low"); | |
| 762 assert(low_boundary() <= lower_high_boundary(), "lower high boundary"); | |
| 763 assert(upper_high_boundary() <= high_boundary(), "upper high boundary"); | |
| 764 assert(high() <= upper_high(), "upper high"); | |
| 765 } | |
| 766 | |
|
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767 void VirtualSpace::print_on(outputStream* out) { |
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768 out->print ("Virtual space:"); |
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769 if (special()) out->print(" (pinned in memory)"); |
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770 out->cr(); |
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771 out->print_cr(" - committed: " SIZE_FORMAT, committed_size()); |
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772 out->print_cr(" - reserved: " SIZE_FORMAT, reserved_size()); |
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773 out->print_cr(" - [low, high]: [" INTPTR_FORMAT ", " INTPTR_FORMAT "]", low(), high()); |
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774 out->print_cr(" - [low_b, high_b]: [" INTPTR_FORMAT ", " INTPTR_FORMAT "]", low_boundary(), high_boundary()); |
| 0 | 775 } |
| 776 | |
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777 void VirtualSpace::print() { |
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778 print_on(tty); |
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779 } |
|
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780 |
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781 /////////////// Unit tests /////////////// |
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782 |
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783 #ifndef PRODUCT |
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784 |
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785 #define test_log(...) \ |
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786 do {\ |
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787 if (VerboseInternalVMTests) { \ |
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788 tty->print_cr(__VA_ARGS__); \ |
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789 tty->flush(); \ |
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790 }\ |
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791 } while (false) |
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792 |
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793 class TestReservedSpace : AllStatic { |
|
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794 public: |
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795 static void small_page_write(void* addr, size_t size) { |
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796 size_t page_size = os::vm_page_size(); |
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797 |
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798 char* end = (char*)addr + size; |
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799 for (char* p = (char*)addr; p < end; p += page_size) { |
|
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800 *p = 1; |
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801 } |
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802 } |
|
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|
803 |
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804 static void release_memory_for_test(ReservedSpace rs) { |
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805 if (rs.special()) { |
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806 guarantee(os::release_memory_special(rs.base(), rs.size()), "Shouldn't fail"); |
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807 } else { |
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808 guarantee(os::release_memory(rs.base(), rs.size()), "Shouldn't fail"); |
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809 } |
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810 } |
|
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|
811 |
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812 static void test_reserved_space1(size_t size, size_t alignment) { |
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813 test_log("test_reserved_space1(%p)", (void*) (uintptr_t) size); |
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814 |
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815 assert(is_size_aligned(size, alignment), "Incorrect input parameters"); |
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816 |
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817 ReservedSpace rs(size, // size |
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818 alignment, // alignment |
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819 UseLargePages, // large |
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820 NULL, // requested_address |
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821 0); // noacces_prefix |
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822 |
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823 test_log(" rs.special() == %d", rs.special()); |
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824 |
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825 assert(rs.base() != NULL, "Must be"); |
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826 assert(rs.size() == size, "Must be"); |
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827 |
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828 assert(is_ptr_aligned(rs.base(), alignment), "aligned sizes should always give aligned addresses"); |
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829 assert(is_size_aligned(rs.size(), alignment), "aligned sizes should always give aligned addresses"); |
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830 |
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831 if (rs.special()) { |
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832 small_page_write(rs.base(), size); |
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833 } |
|
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834 |
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835 release_memory_for_test(rs); |
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836 } |
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837 |
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838 static void test_reserved_space2(size_t size) { |
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839 test_log("test_reserved_space2(%p)", (void*)(uintptr_t)size); |
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840 |
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841 assert(is_size_aligned(size, os::vm_allocation_granularity()), "Must be at least AG aligned"); |
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842 |
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|
843 ReservedSpace rs(size); |
|
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844 |
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845 test_log(" rs.special() == %d", rs.special()); |
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846 |
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847 assert(rs.base() != NULL, "Must be"); |
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848 assert(rs.size() == size, "Must be"); |
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849 |
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850 if (rs.special()) { |
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851 small_page_write(rs.base(), size); |
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852 } |
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853 |
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854 release_memory_for_test(rs); |
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855 } |
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856 |
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857 static void test_reserved_space3(size_t size, size_t alignment, bool maybe_large) { |
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858 test_log("test_reserved_space3(%p, %p, %d)", |
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859 (void*)(uintptr_t)size, (void*)(uintptr_t)alignment, maybe_large); |
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860 |
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861 assert(is_size_aligned(size, os::vm_allocation_granularity()), "Must be at least AG aligned"); |
|
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862 assert(is_size_aligned(size, alignment), "Must be at least aligned against alignment"); |
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863 |
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864 bool large = maybe_large && UseLargePages && size >= os::large_page_size(); |
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865 |
|
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866 ReservedSpace rs(size, alignment, large, false); |
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867 |
|
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|
868 test_log(" rs.special() == %d", rs.special()); |
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869 |
|
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870 assert(rs.base() != NULL, "Must be"); |
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871 assert(rs.size() == size, "Must be"); |
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872 |
|
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|
873 if (rs.special()) { |
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874 small_page_write(rs.base(), size); |
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875 } |
|
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|
876 |
|
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|
877 release_memory_for_test(rs); |
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878 } |
|
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|
879 |
|
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|
880 |
|
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|
881 static void test_reserved_space1() { |
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882 size_t size = 2 * 1024 * 1024; |
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883 size_t ag = os::vm_allocation_granularity(); |
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|
884 |
|
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|
885 test_reserved_space1(size, ag); |
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|
886 test_reserved_space1(size * 2, ag); |
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|
887 test_reserved_space1(size * 10, ag); |
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888 } |
|
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|
889 |
|
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|
890 static void test_reserved_space2() { |
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|
891 size_t size = 2 * 1024 * 1024; |
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892 size_t ag = os::vm_allocation_granularity(); |
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|
893 |
|
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|
894 test_reserved_space2(size * 1); |
|
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|
895 test_reserved_space2(size * 2); |
|
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|
896 test_reserved_space2(size * 10); |
|
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|
897 test_reserved_space2(ag); |
|
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|
898 test_reserved_space2(size - ag); |
|
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|
899 test_reserved_space2(size); |
|
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900 test_reserved_space2(size + ag); |
|
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|
901 test_reserved_space2(size * 2); |
|
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|
902 test_reserved_space2(size * 2 - ag); |
|
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|
903 test_reserved_space2(size * 2 + ag); |
|
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|
904 test_reserved_space2(size * 3); |
|
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|
905 test_reserved_space2(size * 3 - ag); |
|
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|
906 test_reserved_space2(size * 3 + ag); |
|
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|
907 test_reserved_space2(size * 10); |
|
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|
908 test_reserved_space2(size * 10 + size / 2); |
|
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|
909 } |
|
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|
910 |
|
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|
911 static void test_reserved_space3() { |
|
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|
912 size_t ag = os::vm_allocation_granularity(); |
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|
913 |
|
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|
914 test_reserved_space3(ag, ag , false); |
|
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|
915 test_reserved_space3(ag * 2, ag , false); |
|
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|
916 test_reserved_space3(ag * 3, ag , false); |
|
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|
917 test_reserved_space3(ag * 2, ag * 2, false); |
|
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|
918 test_reserved_space3(ag * 4, ag * 2, false); |
|
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|
919 test_reserved_space3(ag * 8, ag * 2, false); |
|
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|
920 test_reserved_space3(ag * 4, ag * 4, false); |
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|
921 test_reserved_space3(ag * 8, ag * 4, false); |
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|
922 test_reserved_space3(ag * 16, ag * 4, false); |
|
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|
923 |
|
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|
924 if (UseLargePages) { |
|
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|
925 size_t lp = os::large_page_size(); |
|
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|
926 |
|
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|
927 // Without large pages |
|
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|
928 test_reserved_space3(lp, ag * 4, false); |
|
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|
929 test_reserved_space3(lp * 2, ag * 4, false); |
|
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|
930 test_reserved_space3(lp * 4, ag * 4, false); |
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|
931 test_reserved_space3(lp, lp , false); |
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|
932 test_reserved_space3(lp * 2, lp , false); |
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|
933 test_reserved_space3(lp * 3, lp , false); |
|
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|
934 test_reserved_space3(lp * 2, lp * 2, false); |
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|
935 test_reserved_space3(lp * 4, lp * 2, false); |
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|
936 test_reserved_space3(lp * 8, lp * 2, false); |
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|
937 |
|
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|
938 // With large pages |
|
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|
939 test_reserved_space3(lp, ag * 4 , true); |
|
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|
940 test_reserved_space3(lp * 2, ag * 4, true); |
|
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|
941 test_reserved_space3(lp * 4, ag * 4, true); |
|
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|
942 test_reserved_space3(lp, lp , true); |
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|
943 test_reserved_space3(lp * 2, lp , true); |
|
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|
944 test_reserved_space3(lp * 3, lp , true); |
|
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|
945 test_reserved_space3(lp * 2, lp * 2, true); |
|
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|
946 test_reserved_space3(lp * 4, lp * 2, true); |
|
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|
947 test_reserved_space3(lp * 8, lp * 2, true); |
|
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|
948 } |
|
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|
949 } |
|
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|
950 |
|
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|
951 static void test_reserved_space() { |
|
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|
952 test_reserved_space1(); |
|
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|
953 test_reserved_space2(); |
|
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|
954 test_reserved_space3(); |
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955 } |
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956 }; |
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957 |
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958 void TestReservedSpace_test() { |
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959 TestReservedSpace::test_reserved_space(); |
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960 } |
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961 |
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962 #define assert_equals(actual, expected) \ |
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963 assert(actual == expected, \ |
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964 err_msg("Got " SIZE_FORMAT " expected " \ |
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965 SIZE_FORMAT, actual, expected)); |
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966 |
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967 #define assert_ge(value1, value2) \ |
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968 assert(value1 >= value2, \ |
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969 err_msg("'" #value1 "': " SIZE_FORMAT " '" \ |
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970 #value2 "': " SIZE_FORMAT, value1, value2)); |
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971 |
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972 #define assert_lt(value1, value2) \ |
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973 assert(value1 < value2, \ |
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974 err_msg("'" #value1 "': " SIZE_FORMAT " '" \ |
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975 #value2 "': " SIZE_FORMAT, value1, value2)); |
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976 |
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977 |
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978 class TestVirtualSpace : AllStatic { |
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979 enum TestLargePages { |
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980 Default, |
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981 Disable, |
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982 Reserve, |
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983 Commit |
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984 }; |
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985 |
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986 static ReservedSpace reserve_memory(size_t reserve_size_aligned, TestLargePages mode) { |
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987 switch(mode) { |
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988 default: |
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989 case Default: |
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990 case Reserve: |
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991 return ReservedSpace(reserve_size_aligned); |
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992 case Disable: |
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993 case Commit: |
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994 return ReservedSpace(reserve_size_aligned, |
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995 os::vm_allocation_granularity(), |
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996 /* large */ false, /* exec */ false); |
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997 } |
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998 } |
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999 |
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1000 static bool initialize_virtual_space(VirtualSpace& vs, ReservedSpace rs, TestLargePages mode) { |
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1001 switch(mode) { |
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1002 default: |
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1003 case Default: |
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1004 case Reserve: |
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1005 return vs.initialize(rs, 0); |
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1006 case Disable: |
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1007 return vs.initialize_with_granularity(rs, 0, os::vm_page_size()); |
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1008 case Commit: |
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1009 return vs.initialize_with_granularity(rs, 0, os::page_size_for_region(rs.size(), rs.size(), 1)); |
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1010 } |
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1011 } |
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1012 |
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1013 public: |
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1014 static void test_virtual_space_actual_committed_space(size_t reserve_size, size_t commit_size, |
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1015 TestLargePages mode = Default) { |
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1016 size_t granularity = os::vm_allocation_granularity(); |
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1017 size_t reserve_size_aligned = align_size_up(reserve_size, granularity); |
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1018 |
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1019 ReservedSpace reserved = reserve_memory(reserve_size_aligned, mode); |
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1020 |
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1021 assert(reserved.is_reserved(), "Must be"); |
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1022 |
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1023 VirtualSpace vs; |
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1024 bool initialized = initialize_virtual_space(vs, reserved, mode); |
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1025 assert(initialized, "Failed to initialize VirtualSpace"); |
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1026 |
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1027 vs.expand_by(commit_size, false); |
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1028 |
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1029 if (vs.special()) { |
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1030 assert_equals(vs.actual_committed_size(), reserve_size_aligned); |
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1031 } else { |
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1032 assert_ge(vs.actual_committed_size(), commit_size); |
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1033 // Approximate the commit granularity. |
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1034 // Make sure that we don't commit using large pages |
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1035 // if large pages has been disabled for this VirtualSpace. |
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1036 size_t commit_granularity = (mode == Disable || !UseLargePages) ? |
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1037 os::vm_page_size() : os::large_page_size(); |
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1038 assert_lt(vs.actual_committed_size(), commit_size + commit_granularity); |
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1039 } |
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1040 |
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1041 reserved.release(); |
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1042 } |
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1043 |
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1044 static void test_virtual_space_actual_committed_space_one_large_page() { |
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1045 if (!UseLargePages) { |
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1046 return; |
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1047 } |
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1048 |
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1049 size_t large_page_size = os::large_page_size(); |
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1050 |
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1051 ReservedSpace reserved(large_page_size, large_page_size, true, false); |
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1052 |
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1053 assert(reserved.is_reserved(), "Must be"); |
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1054 |
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1055 VirtualSpace vs; |
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1056 bool initialized = vs.initialize(reserved, 0); |
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1057 assert(initialized, "Failed to initialize VirtualSpace"); |
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1058 |
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1059 vs.expand_by(large_page_size, false); |
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1060 |
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1061 assert_equals(vs.actual_committed_size(), large_page_size); |
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1062 |
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1063 reserved.release(); |
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1064 } |
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1065 |
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1066 static void test_virtual_space_actual_committed_space() { |
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1067 test_virtual_space_actual_committed_space(4 * K, 0); |
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1068 test_virtual_space_actual_committed_space(4 * K, 4 * K); |
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1069 test_virtual_space_actual_committed_space(8 * K, 0); |
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1070 test_virtual_space_actual_committed_space(8 * K, 4 * K); |
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1071 test_virtual_space_actual_committed_space(8 * K, 8 * K); |
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1072 test_virtual_space_actual_committed_space(12 * K, 0); |
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1073 test_virtual_space_actual_committed_space(12 * K, 4 * K); |
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1074 test_virtual_space_actual_committed_space(12 * K, 8 * K); |
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1075 test_virtual_space_actual_committed_space(12 * K, 12 * K); |
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1076 test_virtual_space_actual_committed_space(64 * K, 0); |
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1077 test_virtual_space_actual_committed_space(64 * K, 32 * K); |
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1078 test_virtual_space_actual_committed_space(64 * K, 64 * K); |
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1079 test_virtual_space_actual_committed_space(2 * M, 0); |
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1080 test_virtual_space_actual_committed_space(2 * M, 4 * K); |
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1081 test_virtual_space_actual_committed_space(2 * M, 64 * K); |
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1082 test_virtual_space_actual_committed_space(2 * M, 1 * M); |
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1083 test_virtual_space_actual_committed_space(2 * M, 2 * M); |
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1084 test_virtual_space_actual_committed_space(10 * M, 0); |
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1085 test_virtual_space_actual_committed_space(10 * M, 4 * K); |
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1086 test_virtual_space_actual_committed_space(10 * M, 8 * K); |
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1087 test_virtual_space_actual_committed_space(10 * M, 1 * M); |
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1088 test_virtual_space_actual_committed_space(10 * M, 2 * M); |
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1089 test_virtual_space_actual_committed_space(10 * M, 5 * M); |
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1090 test_virtual_space_actual_committed_space(10 * M, 10 * M); |
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1091 } |
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1092 |
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1093 static void test_virtual_space_disable_large_pages() { |
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1094 if (!UseLargePages) { |
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1095 return; |
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1096 } |
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1097 // These test cases verify that if we force VirtualSpace to disable large pages |
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1098 test_virtual_space_actual_committed_space(10 * M, 0, Disable); |
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1099 test_virtual_space_actual_committed_space(10 * M, 4 * K, Disable); |
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1100 test_virtual_space_actual_committed_space(10 * M, 8 * K, Disable); |
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1101 test_virtual_space_actual_committed_space(10 * M, 1 * M, Disable); |
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1102 test_virtual_space_actual_committed_space(10 * M, 2 * M, Disable); |
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1103 test_virtual_space_actual_committed_space(10 * M, 5 * M, Disable); |
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1104 test_virtual_space_actual_committed_space(10 * M, 10 * M, Disable); |
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1105 |
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1106 test_virtual_space_actual_committed_space(10 * M, 0, Reserve); |
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1107 test_virtual_space_actual_committed_space(10 * M, 4 * K, Reserve); |
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1108 test_virtual_space_actual_committed_space(10 * M, 8 * K, Reserve); |
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1109 test_virtual_space_actual_committed_space(10 * M, 1 * M, Reserve); |
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1110 test_virtual_space_actual_committed_space(10 * M, 2 * M, Reserve); |
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1111 test_virtual_space_actual_committed_space(10 * M, 5 * M, Reserve); |
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1112 test_virtual_space_actual_committed_space(10 * M, 10 * M, Reserve); |
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1113 |
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1114 test_virtual_space_actual_committed_space(10 * M, 0, Commit); |
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1115 test_virtual_space_actual_committed_space(10 * M, 4 * K, Commit); |
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1116 test_virtual_space_actual_committed_space(10 * M, 8 * K, Commit); |
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1117 test_virtual_space_actual_committed_space(10 * M, 1 * M, Commit); |
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1118 test_virtual_space_actual_committed_space(10 * M, 2 * M, Commit); |
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1119 test_virtual_space_actual_committed_space(10 * M, 5 * M, Commit); |
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1120 test_virtual_space_actual_committed_space(10 * M, 10 * M, Commit); |
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1121 } |
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1122 |
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1123 static void test_virtual_space() { |
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1124 test_virtual_space_actual_committed_space(); |
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1125 test_virtual_space_actual_committed_space_one_large_page(); |
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1126 test_virtual_space_disable_large_pages(); |
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1127 } |
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1128 }; |
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1129 |
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1130 void TestVirtualSpace_test() { |
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1131 TestVirtualSpace::test_virtual_space(); |
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1132 } |
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1133 |
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1134 #endif // PRODUCT |
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1135 |
| 0 | 1136 #endif |