diff options
Diffstat (limited to 'src/H5V.c')
| -rw-r--r-- | src/H5V.c | 66 |
1 files changed, 66 insertions, 0 deletions
@@ -410,6 +410,16 @@ H5V_hyper_copy(intn n, const hsize_t *_size, assert(src_size[i] > 0); } #endif +#ifdef QAK +{ + intn i; + + printf("%s: n=%d, _dst=%p, _src=%p\n",FUNC,(int)n,_dst,_src); + for(i=0; i<n; i++) { + printf("%d: size=%d, dst_size=%d, dst_offset=%d, src_size=%d, src_offset=%d\n",i,(int)size[i],(int)dst_size[i],(int)dst_offset[i],(int)src_size[i],(int)src_offset[i]); + } /* end for */ +} +#endif /* QAK */ /* Copy the size vector so we can modify it */ H5V_vector_cpy(n, size, _size); @@ -610,3 +620,59 @@ H5V_stride_copy2(hsize_t nelmts, hsize_t elmt_size, FUNC_LEAVE(SUCCEED); } + +/*------------------------------------------------------------------------- + * Function: H5V_array_fill + * + * Purpose: Fills all bytes of an array with the same value using memset(). + * Increases amount copied by power of two until the halfway point is + * crossed, then copies the rest in one swoop. + * + * Return: Success: SUCCEED + * + * Failure: FAIL + * + * Programmer: Quincey Koziol + * Thursday, June 18, 1998 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +herr_t +H5V_array_fill(void *_dst, const void *src, size_t size, size_t count) +{ + size_t copy_size; /* size of the buffer to copy */ + size_t copy_items; /* number of items currently copying */ + size_t items_left; /* number of items left to copy */ + uint8 *dst=(uint8 *)_dst; /* alias for pointer arithmetic */ + + FUNC_ENTER(H5V_array_fill, FAIL); + assert (dst); + assert (src); + assert (size < MAX_SIZET && size > 0); + assert (count < MAX_SIZET && count > 0); + + HDmemcpy(dst, src, size); /* copy first item */ + + /* Initialize counters, etc. while compensating for first element copied */ + copy_size = size; + copy_items = 1; + items_left = count - 1; + dst += size; + + /* copy until we've copied at least half of the items */ + while (items_left >= copy_items) + { + HDmemcpy(dst, _dst, copy_size); /* copy the current chunk */ + dst += copy_size; /* move the offset for the next chunk */ + items_left -= copy_items; /* decrement the number of items left */ + + copy_size *= 2; /* increase the size of the chunk to copy */ + copy_items *= 2; /* increase the count of items we are copying */ + } /* end while */ + if (items_left > 0) /* if there are any items left to copy */ + HDmemcpy(dst, _dst, items_left * size); + + FUNC_LEAVE(SUCCEED); +} /* H5V_array_fill() */ |