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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #ifndef V8_REGEXP_STACK_H_ | 28 #ifndef V8_REGEXP_STACK_H_ |
29 #define V8_REGEXP_STACK_H_ | 29 #define V8_REGEXP_STACK_H_ |
30 | 30 |
31 namespace v8 { namespace internal { | 31 namespace v8 { |
| 32 namespace internal { |
32 | 33 |
33 // Maintains a per-v8thread stack area that can be used by irregexp | 34 // Maintains a per-v8thread stack area that can be used by irregexp |
34 // implementation for its backtracking stack. | 35 // implementation for its backtracking stack. |
35 // Since there is only one stack area, the Irregexp implementation is not | 36 // Since there is only one stack area, the Irregexp implementation is not |
36 // re-entrant. I.e., no regular expressions may be executed in the same thread | 37 // re-entrant. I.e., no regular expressions may be executed in the same thread |
37 // during a preempted Irregexp execution. | 38 // during a preempted Irregexp execution. |
38 class RegExpStack { | 39 class RegExpStack { |
39 public: | 40 public: |
40 // Number of allocated locations on the stack below the limit. | 41 // Number of allocated locations on the stack below the limit. |
41 // No sequence of pushes must be longer that this without doing a stack-limit | 42 // No sequence of pushes must be longer that this without doing a stack-limit |
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97 // After this, the buffer is either the default size, or it is empty, so | 98 // After this, the buffer is either the default size, or it is empty, so |
98 // you have to call EnsureCapacity before using it again. | 99 // you have to call EnsureCapacity before using it again. |
99 static void Reset(); | 100 static void Reset(); |
100 | 101 |
101 static ThreadLocal thread_local_; | 102 static ThreadLocal thread_local_; |
102 }; | 103 }; |
103 | 104 |
104 }} // namespace v8::internal | 105 }} // namespace v8::internal |
105 | 106 |
106 #endif // V8_REGEXP_STACK_H_ | 107 #endif // V8_REGEXP_STACK_H_ |
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