OLD | NEW |
1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights | 3 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights |
4 * reserved. | 4 * reserved. |
5 * Copyright (C) 2009 Google Inc. All rights reserved. | 5 * Copyright (C) 2009 Google Inc. All rights reserved. |
6 * | 6 * |
7 * This library is free software; you can redistribute it and/or | 7 * This library is free software; you can redistribute it and/or |
8 * modify it under the terms of the GNU Library General Public | 8 * modify it under the terms of the GNU Library General Public |
9 * License as published by the Free Software Foundation; either | 9 * License as published by the Free Software Foundation; either |
10 * version 2 of the License, or (at your option) any later version. | 10 * version 2 of the License, or (at your option) any later version. |
(...skipping 267 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
278 bool isSafeToSendToAnotherThread() const; | 278 bool isSafeToSendToAnotherThread() const; |
279 | 279 |
280 // The high bits of 'hash' are always empty, but we prefer to store our | 280 // The high bits of 'hash' are always empty, but we prefer to store our |
281 // flags in the low bits because it makes them slightly more efficient to | 281 // flags in the low bits because it makes them slightly more efficient to |
282 // access. So, we shift left and right when setting and getting our hash | 282 // access. So, we shift left and right when setting and getting our hash |
283 // code. | 283 // code. |
284 void setHash(unsigned hash) const { | 284 void setHash(unsigned hash) const { |
285 DCHECK(!hasHash()); | 285 DCHECK(!hasHash()); |
286 // Multiple clients assume that StringHasher is the canonical string | 286 // Multiple clients assume that StringHasher is the canonical string |
287 // hash function. | 287 // hash function. |
288 DCHECK(hash == (is8Bit() ? StringHasher::computeHashAndMaskTop8Bits( | 288 DCHECK(hash == |
289 characters8(), m_length) | 289 (is8Bit() ? StringHasher::computeHashAndMaskTop8Bits(characters8(), |
290 : StringHasher::computeHashAndMaskTop8Bits( | 290 m_length) |
291 characters16(), m_length))); | 291 : StringHasher::computeHashAndMaskTop8Bits(characters16(), |
| 292 m_length))); |
292 m_hash = hash; | 293 m_hash = hash; |
293 DCHECK(hash); // Verify that 0 is a valid sentinel hash value. | 294 DCHECK(hash); // Verify that 0 is a valid sentinel hash value. |
294 } | 295 } |
295 | 296 |
296 bool hasHash() const { return m_hash != 0; } | 297 bool hasHash() const { return m_hash != 0; } |
297 | 298 |
298 unsigned existingHash() const { | 299 unsigned existingHash() const { |
299 DCHECK(hasHash()); | 300 DCHECK(hasHash()); |
300 return m_hash; | 301 return m_hash; |
301 } | 302 } |
(...skipping 214 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
516 | 517 |
517 #ifdef STRING_STATS | 518 #ifdef STRING_STATS |
518 static StringStats m_stringStats; | 519 static StringStats m_stringStats; |
519 #endif | 520 #endif |
520 | 521 |
521 static unsigned m_highestStaticStringLength; | 522 static unsigned m_highestStaticStringLength; |
522 | 523 |
523 #if DCHECK_IS_ON() | 524 #if DCHECK_IS_ON() |
524 void assertHashIsCorrect() { | 525 void assertHashIsCorrect() { |
525 DCHECK(hasHash()); | 526 DCHECK(hasHash()); |
526 DCHECK_EQ(existingHash(), StringHasher::computeHashAndMaskTop8Bits( | 527 DCHECK_EQ( |
527 characters8(), length())); | 528 existingHash(), |
| 529 StringHasher::computeHashAndMaskTop8Bits(characters8(), length())); |
528 } | 530 } |
529 #endif | 531 #endif |
530 | 532 |
531 private: | 533 private: |
532 #if DCHECK_IS_ON() | 534 #if DCHECK_IS_ON() |
533 mutable ThreadRestrictionVerifier m_verifier; | 535 mutable ThreadRestrictionVerifier m_verifier; |
534 #endif | 536 #endif |
535 mutable unsigned m_refCount; | 537 mutable unsigned m_refCount; |
536 const unsigned m_length; | 538 const unsigned m_length; |
537 mutable unsigned m_hash : 24; | 539 mutable unsigned m_hash : 24; |
(...skipping 349 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
887 using WTF::TextCaseASCIIInsensitive; | 889 using WTF::TextCaseASCIIInsensitive; |
888 using WTF::TextCaseUnicodeInsensitive; | 890 using WTF::TextCaseUnicodeInsensitive; |
889 using WTF::TextCaseSensitive; | 891 using WTF::TextCaseSensitive; |
890 using WTF::TextCaseSensitivity; | 892 using WTF::TextCaseSensitivity; |
891 using WTF::equal; | 893 using WTF::equal; |
892 using WTF::equalNonNull; | 894 using WTF::equalNonNull; |
893 using WTF::lengthOfNullTerminatedString; | 895 using WTF::lengthOfNullTerminatedString; |
894 using WTF::reverseFind; | 896 using WTF::reverseFind; |
895 | 897 |
896 #endif | 898 #endif |
OLD | NEW |