#ifndef _TALLOC_H_ #define _TALLOC_H_ /* Unix SMB/CIFS implementation. Samba temporary memory allocation functions Copyright (C) Andrew Tridgell 2004-2005 Copyright (C) Stefan Metzmacher 2006 ** NOTE! The following LGPL license applies to the talloc ** library. This does NOT imply that all of Samba is released ** under the LGPL This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, see <http://www.gnu.org/licenses/>. */ #include <stdlib.h> #include <stdio.h> #include <stdarg.h> /* this is only needed for compatibility with the old talloc */ typedef void TALLOC_CTX; /* this uses a little trick to allow __LINE__ to be stringified */ #ifndef __location__ #define __TALLOC_STRING_LINE1__(s) #s #define __TALLOC_STRING_LINE2__(s) __TALLOC_STRING_LINE1__(s) #define __TALLOC_STRING_LINE3__ __TALLOC_STRING_LINE2__(__LINE__) #define __location__ __FILE__ ":" __TALLOC_STRING_LINE3__ #endif #ifndef TALLOC_DEPRECATED #define TALLOC_DEPRECATED 0 #endif #ifndef PRINTF_ATTRIBUTE #if (__GNUC__ >= 3) /** Use gcc attribute to check printf fns. a1 is the 1-based index of * the parameter containing the format, and a2 the index of the first * argument. Note that some gcc 2.x versions don't handle this * properly **/ #define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (__printf__, a1, a2))) #else #define PRINTF_ATTRIBUTE(a1, a2) #endif #endif /* try to make talloc_set_destructor() and talloc_steal() type safe, if we have a recent gcc */ #if (__GNUC__ >= 3) #define _TALLOC_TYPEOF(ptr) __typeof__(ptr) #define talloc_set_destructor(ptr, function) \ do { \ int (*_talloc_destructor_fn)(_TALLOC_TYPEOF(ptr)) = (function); \ _talloc_set_destructor((ptr), (int (*)(void *))_talloc_destructor_fn); \ } while(0) /* this extremely strange macro is to avoid some braindamaged warning stupidity in gcc 4.1.x */ #define talloc_steal(ctx, ptr) ({ _TALLOC_TYPEOF(ptr) __talloc_steal_ret = (_TALLOC_TYPEOF(ptr))_talloc_steal((ctx),(ptr)); __talloc_steal_ret; }) #else #define talloc_set_destructor(ptr, function) \ _talloc_set_destructor((ptr), (int (*)(void *))(function)) #define _TALLOC_TYPEOF(ptr) void * #define talloc_steal(ctx, ptr) (_TALLOC_TYPEOF(ptr))_talloc_steal((ctx),(ptr)) #endif #define talloc_reference(ctx, ptr) (_TALLOC_TYPEOF(ptr))_talloc_reference((ctx),(ptr)) #define talloc_move(ctx, ptr) (_TALLOC_TYPEOF(*(ptr)))_talloc_move((ctx),(void *)(ptr)) /* useful macros for creating type checked pointers */ #define talloc(ctx, type) (type *)talloc_named_const(ctx, sizeof(type), #type) #define talloc_size(ctx, size) talloc_named_const(ctx, size, __location__) #define talloc_ptrtype(ctx, ptr) (_TALLOC_TYPEOF(ptr))talloc_size(ctx, sizeof(*(ptr))) #define talloc_new(ctx) talloc_named_const(ctx, 0, "talloc_new: " __location__) #define talloc_zero(ctx, type) (type *)_talloc_zero(ctx, sizeof(type), #type) #define talloc_zero_size(ctx, size) _talloc_zero(ctx, size, __location__) #define talloc_zero_array(ctx, type, count) (type *)_talloc_zero_array(ctx, sizeof(type), count, #type) #define talloc_array(ctx, type, count) (type *)_talloc_array(ctx, sizeof(type), count, #type) #define talloc_array_size(ctx, size, count) _talloc_array(ctx, size, count, __location__) #define talloc_array_ptrtype(ctx, ptr, count) (_TALLOC_TYPEOF(ptr))talloc_array_size(ctx, sizeof(*(ptr)), count) #define talloc_realloc(ctx, p, type, count) (type *)_talloc_realloc_array(ctx, p, sizeof(type), count, #type) #define talloc_realloc_size(ctx, ptr, size) _talloc_realloc(ctx, ptr, size, __location__) #define talloc_memdup(t, p, size) _talloc_memdup(t, p, size, __location__) #define talloc_set_type(ptr, type) talloc_set_name_const(ptr, #type) #define talloc_get_type(ptr, type) (type *)talloc_check_name(ptr, #type) #define talloc_find_parent_bytype(ptr, type) (type *)talloc_find_parent_byname(ptr, #type) #if TALLOC_DEPRECATED #define talloc_zero_p(ctx, type) talloc_zero(ctx, type) #define talloc_p(ctx, type) talloc(ctx, type) #define talloc_array_p(ctx, type, count) talloc_array(ctx, type, count) #define talloc_realloc_p(ctx, p, type, count) talloc_realloc(ctx, p, type, count) #define talloc_destroy(ctx) talloc_free(ctx) #define talloc_append_string(c, s, a) (s?talloc_strdup_append(s,a):talloc_strdup(c, a)) #endif /* The following definitions come from talloc.c */ void *_talloc(const void *context, size_t size); void *talloc_pool(const void *context, size_t size); void _talloc_set_destructor(const void *ptr, int (*destructor)(void *)); int talloc_increase_ref_count(const void *ptr); size_t talloc_reference_count(const void *ptr); void *_talloc_reference(const void *context, const void *ptr); int talloc_unlink(const void *context, void *ptr); const char *talloc_set_name(const void *ptr, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3); void talloc_set_name_const(const void *ptr, const char *name); void *talloc_named(const void *context, size_t size, const char *fmt, ...) PRINTF_ATTRIBUTE(3,4); void *talloc_named_const(const void *context, size_t size, const char *name); const char *talloc_get_name(const void *ptr); void *talloc_check_name(const void *ptr, const char *name); void *talloc_parent(const void *ptr); const char *talloc_parent_name(const void *ptr); void *talloc_init(const char *fmt, ...) PRINTF_ATTRIBUTE(1,2); int talloc_free(void *ptr); void talloc_free_children(void *ptr); void *_talloc_realloc(const void *context, void *ptr, size_t size, const char *name); void *_talloc_steal(const void *new_ctx, const void *ptr); void *_talloc_move(const void *new_ctx, const void *pptr); size_t talloc_total_size(const void *ptr); size_t talloc_total_blocks(const void *ptr); void talloc_report_depth_cb(const void *ptr, int depth, int max_depth, void (*callback)(const void *ptr, int depth, int max_depth, int is_ref, void *private_data), void *private_data); void talloc_report_depth_file(const void *ptr, int depth, int max_depth, FILE *f); void talloc_report_full(const void *ptr, FILE *f); void talloc_report(const void *ptr, FILE *f); void talloc_enable_null_tracking(void); void talloc_disable_null_tracking(void); void talloc_enable_leak_report(void); void talloc_enable_leak_report_full(void); void *_talloc_zero(const void *ctx, size_t size, const char *name); void *_talloc_memdup(const void *t, const void *p, size_t size, const char *name); void *_talloc_array(const void *ctx, size_t el_size, unsigned count, const char *name); void *_talloc_zero_array(const void *ctx, size_t el_size, unsigned count, const char *name); void *_talloc_realloc_array(const void *ctx, void *ptr, size_t el_size, unsigned count, const char *name); void *talloc_realloc_fn(const void *context, void *ptr, size_t size); void *talloc_autofree_context(void); size_t talloc_get_size(const void *ctx); void *talloc_find_parent_byname(const void *ctx, const char *name); void talloc_show_parents(const void *context, FILE *file); int talloc_is_parent(const void *context, const void *ptr); char *talloc_strdup(const void *t, const char *p); char *talloc_strdup_append(char *s, const char *a); char *talloc_strdup_append_buffer(char *s, const char *a); char *talloc_strndup(const void *t, const char *p, size_t n); char *talloc_strndup_append(char *s, const char *a, size_t n); char *talloc_strndup_append_buffer(char *s, const char *a, size_t n); char *talloc_vasprintf(const void *t, const char *fmt, va_list ap) PRINTF_ATTRIBUTE(2,0); char *talloc_vasprintf_append(char *s, const char *fmt, va_list ap) PRINTF_ATTRIBUTE(2,0); char *talloc_vasprintf_append_buffer(char *s, const char *fmt, va_list ap) PRINTF_ATTRIBUTE(2,0); char *talloc_asprintf(const void *t, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3); char *talloc_asprintf_append(char *s, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3); char *talloc_asprintf_append_buffer(char *s, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3); #endif