pike.git/ src/ program.h

Branch: Tag:

2010-11-25

2010-11-25 20:36:41 by Henrik Grubbström (Grubba) <grubba@grubba.org>

Added cache for vtable lookups in the get case.

198:      union idptr   { +  /* For variables: Offset of the variable in the storage pointed to +  * by inherit.storage_offset in the struct inherit that corresponds +  * to the identifier. See LOW_GET_GLOBAL and GET_GLOBAL. The stored +  * variable may be either a normal or a short svalue, depending on +  * identifier.run_time_type. (IDENTIFIER_VARIABLE) +  * +  * For pike functions: Offset to the start of the function in +  * program.program in the program pointed to by prog in the struct +  * inherit that corresponds to the identifier. Or -1 if a prototype. +  * (IDENTIFIER_PIKE_FUNCTION) +  */ +  ptrdiff_t offset; +     /* External symbol reference. (IDENTIFIER_EXTERN)    *    * Note that this bit MUST be checked to be zero
228:    /* C function pointer. (IDENTIFIER_C_FUNCTION) */    void (*c_fun)(INT32);    -  /* For variables: Offset of the variable in the storage pointed to -  * by inherit.storage_offset in the struct inherit that corresponds -  * to the identifier. See LOW_GET_GLOBAL and GET_GLOBAL. The stored -  * variable may be either a normal or a short svalue, depending on -  * identifier.run_time_type. (IDENTIFIER_VARIABLE) -  * -  * For pike functions: Offset to the start of the function in -  * program.program in the program pointed to by prog in the struct -  * inherit that corresponds to the identifier. Or -1 if a prototype. -  * (IDENTIFIER_PIKE_FUNCTION) -  */ -  ptrdiff_t offset; +  /* Direct svalue pointer. Only used in the reference vtable cache. */ +  struct svalue *sval;   };      #define IDENTIFIER_VARIABLE 0
357:       /* ID_* flags - protected, private etc.. */    unsigned INT16 id_flags; +  +  /* V-table cache information from this point on. */ +  +  /* Run-time type for the value field if initialized. +  * PIKE_T_UNKNOWN indicates uninitialized. +  */ +  INT16 run_time_type; +  +  /* Cached value of the lookup. +  */ +  union idptr func;   };      /* Magic value used as identifier reference integer to refer to this. */