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Move some of the memory utility macros to a separate header (for now).
This commit is contained in:
Jelmer Vernooij
parent
7c94c874c4
commit
dc5dc3b469
93
lib/util/memory.h
Normal file
93
lib/util/memory.h
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@ -0,0 +1,93 @@
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/*
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Unix SMB/CIFS implementation.
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Samba utility functions
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Copyright (C) Andrew Tridgell 1992-1999
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Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2008
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _SAMBA_MEMORY_H_
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#define _SAMBA_MEMORY_H_
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#ifndef SAFE_FREE /* Oh no this is also defined in tdb.h */
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/**
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* Free memory if the pointer and zero the pointer.
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*
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* @note You are explicitly allowed to pass NULL pointers -- they will
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* always be ignored.
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**/
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#define SAFE_FREE(x) do { if ((x) != NULL) {free(discard_const_p(void *, (x))); (x)=NULL;} } while(0)
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#endif
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/**
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* Type-safe version of malloc. Allocated one copy of the
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* specified data type.
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*/
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#define malloc_p(type) (type *)malloc(sizeof(type))
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/**
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* Allocate an array of elements of one data type. Does type-checking.
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*/
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#define malloc_array_p(type, count) (type *)realloc_array(NULL, sizeof(type), count)
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/**
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* Resize an array of elements of one data type. Does type-checking.
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*/
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#define realloc_p(p, type, count) (type *)realloc_array(p, sizeof(type), count)
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/**
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* zero a structure
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*/
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#ifndef ZERO_STRUCT
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#define ZERO_STRUCT(x) memset((char *)&(x), 0, sizeof(x))
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#endif
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/**
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* zero a structure given a pointer to the structure
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*/
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#ifndef ZERO_STRUCTP
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#define ZERO_STRUCTP(x) do { if ((x) != NULL) memset((char *)(x), 0, sizeof(*(x))); } while(0)
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#endif
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/**
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* zero a structure given a pointer to the structure - no zero check
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*/
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#ifndef ZERO_STRUCTPN
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#define ZERO_STRUCTPN(x) memset((char *)(x), 0, sizeof(*(x)))
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#endif
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/* zero an array - note that sizeof(array) must work - ie. it must not be a
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pointer */
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#ifndef ZERO_ARRAY
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#define ZERO_ARRAY(x) memset((char *)(x), 0, sizeof(x))
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#endif
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/**
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* work out how many elements there are in a static array
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*/
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#ifndef ARRAY_SIZE
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#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
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#endif
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/**
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* pointer difference macro
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*/
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#ifndef PTR_DIFF
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#define PTR_DIFF(p1,p2) ((ptrdiff_t)(((const char *)(p1)) - (const char *)(p2)))
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#endif
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#endif /* _SAMBA_MEMORY_H_ */
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@ -79,79 +79,11 @@ extern const char *panic_action;
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DEBUG(0,("PANIC: assert failed at %s(%d)\n", __FILE__, __LINE__)); \
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smb_panic("assert failed"); }} while (0)
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#ifndef SAFE_FREE /* Oh no this is also defined in tdb.h */
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/**
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* Free memory if the pointer and zero the pointer.
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*
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* @note You are explicitly allowed to pass NULL pointers -- they will
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* always be ignored.
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**/
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#define SAFE_FREE(x) do { if ((x) != NULL) {free(discard_const_p(void *, (x))); (x)=NULL;} } while(0)
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#endif
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/**
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* Type-safe version of malloc. Allocated one copy of the
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* specified data type.
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*/
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#define malloc_p(type) (type *)malloc(sizeof(type))
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/**
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* Allocate an array of elements of one data type. Does type-checking.
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*/
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#define malloc_array_p(type, count) (type *)realloc_array(NULL, sizeof(type), count)
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/**
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* Resize an array of elements of one data type. Does type-checking.
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*/
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#define realloc_p(p, type, count) (type *)realloc_array(p, sizeof(type), count)
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#if defined(VALGRIND)
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#define strlen(x) valgrind_strlen(x)
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#endif
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/**
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* zero a structure
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*/
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#ifndef ZERO_STRUCT
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#define ZERO_STRUCT(x) memset((char *)&(x), 0, sizeof(x))
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#endif
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/**
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* zero a structure given a pointer to the structure
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*/
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#ifndef ZERO_STRUCTP
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#define ZERO_STRUCTP(x) do { if ((x) != NULL) memset((char *)(x), 0, sizeof(*(x))); } while(0)
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#endif
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/**
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* zero a structure given a pointer to the structure - no zero check
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*/
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#ifndef ZERO_STRUCTPN
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#define ZERO_STRUCTPN(x) memset((char *)(x), 0, sizeof(*(x)))
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#endif
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/* zero an array - note that sizeof(array) must work - ie. it must not be a
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pointer */
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#ifndef ZERO_ARRAY
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#define ZERO_ARRAY(x) memset((char *)(x), 0, sizeof(x))
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#endif
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/**
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* work out how many elements there are in a static array
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*/
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#ifndef ARRAY_SIZE
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#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
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#endif
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/**
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* pointer difference macro
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*/
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#ifndef PTR_DIFF
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#define PTR_DIFF(p1,p2) ((ptrdiff_t)(((const char *)(p1)) - (const char *)(p2)))
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#endif
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/* The following definitions come from lib/util/fault.c */
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#include "../lib/util/memory.h"
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/**
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* Write backtrace to debug log
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