kc3-lang/libxml2/include/private/dict.h

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• Hash : 9c2c87b5
  Author :
  Date : 2023-12-24T15:33:12
  

  dict: Move local RNG state to global state
  
  Don't use TLS variables directly.
  

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• include/private/dict.h

• #ifndef XML_DICT_H_PRIVATE__
  #define XML_DICT_H_PRIVATE__
  
  #include <libxml/dict.h>
  
  /*
   * Values are ANDed with 0xFFFFFFFF to support platforms where
   * unsigned is larger than 32 bits. With 32-bit unsigned values,
   * modern compilers should optimize the operation away.
   */
  
  #define HASH_ROL(x,n) ((x) << (n) | ((x) & 0xFFFFFFFF) >> (32 - (n)))
  #define HASH_ROR(x,n) (((x) & 0xFFFFFFFF) >> (n) | (x) << (32 - (n)))
  
  /*
   * GoodOAAT: One of a smallest non-multiplicative One-At-a-Time functions
   * that passes SMHasher.
   *
   * Author: Sokolov Yura aka funny-falcon
   */
  
  #define HASH_INIT(h1, h2, seed) \
      do { \
          h1 = seed ^ 0x3b00; \
          h2 = HASH_ROL(seed, 15); \
      } while (0)
  
  #define HASH_UPDATE(h1, h2, ch) \
      do { \
          h1 += ch; \
          h1 += h1 << 3; \
          h2 += h1; \
          h2 = HASH_ROL(h2, 7); \
          h2 += h2 << 2; \
      } while (0)
  
  /* Result is in h2 */
  #define HASH_FINISH(h1, h2) \
      do { \
          h1 ^= h2; \
          h1 += HASH_ROL(h2, 14); \
          h2 ^= h1; h2 += HASH_ROR(h1, 6); \
          h1 ^= h2; h1 += HASH_ROL(h2, 5); \
          h2 ^= h1; h2 += HASH_ROR(h1, 8); \
          h2 &= 0xFFFFFFFF; \
      } while (0)
  
  typedef struct {
      unsigned hashValue;
      const xmlChar *name;
  } xmlHashedString;
  
  XML_HIDDEN void
  xmlInitDictInternal(void);
  XML_HIDDEN void
  xmlCleanupDictInternal(void);
  
  XML_HIDDEN unsigned
  xmlDictComputeHash(const xmlDict *dict, const xmlChar *string);
  XML_HIDDEN unsigned
  xmlDictCombineHash(unsigned v1, unsigned v2);
  XML_HIDDEN xmlHashedString
  xmlDictLookupHashed(xmlDictPtr dict, const xmlChar *name, int len);
  
  XML_HIDDEN void
  xmlInitRandom(void);
  XML_HIDDEN void
  xmlCleanupRandom(void);
  XML_HIDDEN unsigned
  xmlGlobalRandom(void);
  XML_HIDDEN unsigned
  xmlRandom(void);
  
  #endif /* XML_DICT_H_PRIVATE__ */
  

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