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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // modification, are permitted provided that the following conditions are | 3 // found in the LICENSE file. |
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. | |
27 | 4 |
28 #include <string.h> | 5 #include "zone.h" |
| 6 |
| 7 #include <cstring> |
29 | 8 |
30 #include "v8.h" | 9 #include "v8.h" |
31 #include "zone-inl.h" | 10 #include "zone-inl.h" |
32 | 11 |
33 namespace v8 { | 12 namespace v8 { |
34 namespace internal { | 13 namespace internal { |
35 | 14 |
36 | |
37 // Segments represent chunks of memory: They have starting address | 15 // Segments represent chunks of memory: They have starting address |
38 // (encoded in the this pointer) and a size in bytes. Segments are | 16 // (encoded in the this pointer) and a size in bytes. Segments are |
39 // chained together forming a LIFO structure with the newest segment | 17 // chained together forming a LIFO structure with the newest segment |
40 // available as segment_head_. Segments are allocated using malloc() | 18 // available as segment_head_. Segments are allocated using malloc() |
41 // and de-allocated using free(). | 19 // and de-allocated using free(). |
42 | 20 |
43 class Segment { | 21 class Segment { |
44 public: | 22 public: |
45 void Initialize(Segment* next, int size) { | 23 void Initialize(Segment* next, int size) { |
46 next_ = next; | 24 next_ = next; |
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230 if (reinterpret_cast<uintptr_t>(position_) | 208 if (reinterpret_cast<uintptr_t>(position_) |
231 < reinterpret_cast<uintptr_t>(result)) { | 209 < reinterpret_cast<uintptr_t>(result)) { |
232 V8::FatalProcessOutOfMemory("Zone"); | 210 V8::FatalProcessOutOfMemory("Zone"); |
233 return NULL; | 211 return NULL; |
234 } | 212 } |
235 limit_ = segment->end(); | 213 limit_ = segment->end(); |
236 ASSERT(position_ <= limit_); | 214 ASSERT(position_ <= limit_); |
237 return result; | 215 return result; |
238 } | 216 } |
239 | 217 |
240 | |
241 } } // namespace v8::internal | 218 } } // namespace v8::internal |
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