pike.git/ src/ builtin_functions.c

2014-02-26

2014-02-26 13:27:47 by Per Hedbor <ph@opera.com>

• ea315f342abfc7816a5b36fc82d63b27885ac4fe (11 lines) (+10/-1) ^{[ Show | Annotate ]}
  Branch: per/rdrnd

4x faster random_string.

826:    INT_TYPE len, e;    get_all_args("random_string",args,"%+",&len);    ret = begin_shared_string(len); -  for(e=0;e<len;e++) ret->str[e] = DO_NOT_WARN((char)my_rand()); +  +  /* Note: Assumes pike_string->str is aligned on a 4 byte boundary +  * (it is, currently) +  */ +  for(e=3;e<len;e+=sizeof(INT32)) +  ((unsigned INT32 *)(ret->str+e-3))[0] = DO_NOT_WARN(my_rand()); +  for(;e<len;e++) +  ret->str[e] = DO_NOT_WARN((char)my_rand()); +     pop_n_elems(args);    push_string(end_shared_string(ret));   }