diff options
Diffstat (limited to 'src/H5MM.c')
| -rw-r--r-- | src/H5MM.c | 46 |
1 files changed, 41 insertions, 5 deletions
@@ -274,7 +274,7 @@ H5MM_malloc(size_t size) #if defined H5_MEMORY_ALLOC_SANITY_CHECK /* Initialize block list head singleton */ if(!H5MM_init_s) { - HDmemcpy(H5MM_block_head_s.sig, H5MM_block_signature_s, H5MM_SIG_SIZE); + H5MM_memcpy(H5MM_block_head_s.sig, H5MM_block_signature_s, H5MM_SIG_SIZE); H5MM_block_head_s.next = &H5MM_block_head_s; H5MM_block_head_s.prev = &H5MM_block_head_s; H5MM_block_head_s.u.info.size = SIZET_MAX; @@ -291,15 +291,15 @@ H5MM_malloc(size_t size) if(NULL != (block = (H5MM_block_t *)HDmalloc(alloc_size))) { /* Set up block */ - HDmemcpy(block->sig, H5MM_block_signature_s, H5MM_SIG_SIZE); + H5MM_memcpy(block->sig, H5MM_block_signature_s, H5MM_SIG_SIZE); block->next = H5MM_block_head_s.next; H5MM_block_head_s.next = block; block->next->prev = block; block->prev = &H5MM_block_head_s; block->u.info.size = size; block->u.info.in_use = TRUE; - HDmemcpy(block->b, H5MM_block_head_guard_s, H5MM_HEAD_GUARD_SIZE); - HDmemcpy(block->b + H5MM_HEAD_GUARD_SIZE + size, H5MM_block_tail_guard_s, H5MM_TAIL_GUARD_SIZE); + H5MM_memcpy(block->b, H5MM_block_head_guard_s, H5MM_HEAD_GUARD_SIZE); + H5MM_memcpy(block->b + H5MM_HEAD_GUARD_SIZE + size, H5MM_block_tail_guard_s, H5MM_TAIL_GUARD_SIZE); /* Update statistics */ H5MM_total_alloc_bytes_s += size; @@ -417,7 +417,7 @@ H5MM_realloc(void *mem, size_t size) H5MM__sanity_check(mem); ret_value = H5MM_malloc(size); - HDmemcpy(ret_value, mem, MIN(size, old_size)); + H5MM_memcpy(ret_value, mem, MIN(size, old_size)); H5MM_xfree(mem); } /* end if */ else @@ -564,3 +564,39 @@ H5MM_xfree(void *mem) FUNC_LEAVE_NOAPI(NULL) } /* end H5MM_xfree() */ + +/*------------------------------------------------------------------------- + * Function: H5MM_memcpy + * + * Purpose: Like memcpy(3) but with sanity checks on the parameters, + * particularly buffer overlap. + * + * Return: Success: pointer to dest + * Failure: NULL + * + * Programmer: Dana Robinson + * Spring 2019 + * + *------------------------------------------------------------------------- + */ +void * +H5MM_memcpy(void *dest, const void *src, size_t n) +{ + void *ret = NULL; + + /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ + FUNC_ENTER_NOAPI_NOINIT_NOERR + + HDassert(dest); + HDassert(src); + + /* Check for buffer overlap */ + HDassert((char *)dest >= (const char *)src + n || (const char *)src >= (char *)dest + n); + + /* Copy */ + ret = HDmemcpy(dest, src, n); + + FUNC_LEAVE_NOAPI(ret) + +} /* end H5MM_memcpy() */ + |