OLD | NEW |
1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Redistribution and use in source and binary forms, with or without |
3 // found in the LICENSE file. | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: |
| 5 // |
| 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided |
| 11 // with the distribution. |
| 12 // * Neither the name of Google Inc. nor the names of its |
| 13 // contributors may be used to endorse or promote products derived |
| 14 // from this software without specific prior written permission. |
| 15 // |
| 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
4 | 27 |
5 #include "zone.h" | 28 #include <string.h> |
6 | |
7 #include <cstring> | |
8 | 29 |
9 #include "v8.h" | 30 #include "v8.h" |
10 #include "zone-inl.h" | 31 #include "zone-inl.h" |
11 | 32 |
12 namespace v8 { | 33 namespace v8 { |
13 namespace internal { | 34 namespace internal { |
14 | 35 |
| 36 |
15 // Segments represent chunks of memory: They have starting address | 37 // Segments represent chunks of memory: They have starting address |
16 // (encoded in the this pointer) and a size in bytes. Segments are | 38 // (encoded in the this pointer) and a size in bytes. Segments are |
17 // chained together forming a LIFO structure with the newest segment | 39 // chained together forming a LIFO structure with the newest segment |
18 // available as segment_head_. Segments are allocated using malloc() | 40 // available as segment_head_. Segments are allocated using malloc() |
19 // and de-allocated using free(). | 41 // and de-allocated using free(). |
20 | 42 |
21 class Segment { | 43 class Segment { |
22 public: | 44 public: |
23 void Initialize(Segment* next, int size) { | 45 void Initialize(Segment* next, int size) { |
24 next_ = next; | 46 next_ = next; |
(...skipping 183 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
208 if (reinterpret_cast<uintptr_t>(position_) | 230 if (reinterpret_cast<uintptr_t>(position_) |
209 < reinterpret_cast<uintptr_t>(result)) { | 231 < reinterpret_cast<uintptr_t>(result)) { |
210 V8::FatalProcessOutOfMemory("Zone"); | 232 V8::FatalProcessOutOfMemory("Zone"); |
211 return NULL; | 233 return NULL; |
212 } | 234 } |
213 limit_ = segment->end(); | 235 limit_ = segment->end(); |
214 ASSERT(position_ <= limit_); | 236 ASSERT(position_ <= limit_); |
215 return result; | 237 return result; |
216 } | 238 } |
217 | 239 |
| 240 |
218 } } // namespace v8::internal | 241 } } // namespace v8::internal |
OLD | NEW |