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1 // Copyright 2012 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 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_UTILS_H_ | 5 #ifndef V8_UTILS_H_ |
6 #define V8_UTILS_H_ | 6 #define V8_UTILS_H_ |
7 | 7 |
8 #include <limits.h> | 8 #include <limits.h> |
9 #include <stdlib.h> | 9 #include <stdlib.h> |
10 #include <string.h> | 10 #include <string.h> |
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185 | 185 |
186 | 186 |
187 // Returns true if (addr + offset) is aligned. | 187 // Returns true if (addr + offset) is aligned. |
188 inline bool IsAddressAligned(Address addr, | 188 inline bool IsAddressAligned(Address addr, |
189 intptr_t alignment, | 189 intptr_t alignment, |
190 int offset = 0) { | 190 int offset = 0) { |
191 intptr_t offs = OffsetFrom(addr + offset); | 191 intptr_t offs = OffsetFrom(addr + offset); |
192 return IsAligned(offs, alignment); | 192 return IsAligned(offs, alignment); |
193 } | 193 } |
194 | 194 |
195 template <typename T, typename U> | |
196 inline T RoundUpToMultipleOfPowOf2(T value, U multiple) { | |
197 DCHECK(multiple && ((multiple & (multiple - 1)) == 0)); | |
198 return (value + multiple - 1) & ~(multiple - 1); | |
199 } | |
200 | 195 |
201 // Returns the maximum of the two parameters. | 196 // Returns the maximum of the two parameters. |
202 template <typename T> | 197 template <typename T> |
203 T Max(T a, T b) { | 198 T Max(T a, T b) { |
204 return a < b ? b : a; | 199 return a < b ? b : a; |
205 } | 200 } |
206 | 201 |
207 | 202 |
208 // Returns the minimum of the two parameters. | 203 // Returns the minimum of the two parameters. |
209 template <typename T> | 204 template <typename T> |
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1727 private: | 1722 private: |
1728 T value_; | 1723 T value_; |
1729 ThreadedListZoneEntry<T>* next_; | 1724 ThreadedListZoneEntry<T>* next_; |
1730 DISALLOW_COPY_AND_ASSIGN(ThreadedListZoneEntry); | 1725 DISALLOW_COPY_AND_ASSIGN(ThreadedListZoneEntry); |
1731 }; | 1726 }; |
1732 | 1727 |
1733 } // namespace internal | 1728 } // namespace internal |
1734 } // namespace v8 | 1729 } // namespace v8 |
1735 | 1730 |
1736 #endif // V8_UTILS_H_ | 1731 #endif // V8_UTILS_H_ |
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