#include <stdio.h>
#include <stdarg.h>
-/** \mainpage
- *
- * \section intro_sec Introduction
- *
- * Talloc is a hierarchical, reference counted memory pool system with
- * destructors. Quite a mouthful really, but not too bad once you get used to
- * it.
- *
- * Perhaps the biggest difference from other memory pool systems is that there
- * is no distinction between a "talloc context" and a "talloc pointer". Any
- * pointer returned from talloc() is itself a valid talloc context. This means
- * you can do this:
- *
- * \code
- * struct foo *X = talloc(mem_ctx, struct foo);
- * X->name = talloc_strdup(X, "foo");
- * \endcode
- *
- * and the pointer X->name would be a "child" of the talloc context "X" which
- * is itself a child of mem_ctx. So if you do talloc_free(mem_ctx) then it is
- * all destroyed, whereas if you do talloc_free(X) then just X and X->name are
- * destroyed, and if you do talloc_free(X->name) then just the name element of
- * X is destroyed.
- *
- * If you think about this, then what this effectively gives you is an n-ary
- * tree, where you can free any part of the tree with talloc_free().
- *
- * To start, you should probably first look at the definitions of
- * ::TALLOC_CTX, talloc_init(), talloc() and talloc_free().
- *
- * \section named_blocks Named blocks
- *
- * Every talloc chunk has a name that can be used as a dynamic type-checking
- * system. If for some reason like a callback function you had to cast a
- * "struct foo *" to a "void *" variable, later you can safely reassign the
- * "void *" pointer to a "struct foo *" by using the talloc_get_type() or
- * talloc_get_type_abort() macros.
- *
- * \code
- * struct foo *X = talloc_get_type_abort(ptr, struct foo);
- * \endcode
- *
- * This will abort if "ptr" does not contain a pointer that has been created
- * with talloc(mem_ctx, struct foo).
- *
- * \section multi_threading Multi-Threading
- *
- * talloc itself does not deal with threads. It is thread-safe (assuming the
- * underlying "malloc" is), as long as each thread uses different memory
- * contexts.
- *
- * If two threads uses the same context then they need to synchronize in order
- * to be safe. In particular:
- *
- *
- * - when using talloc_enable_leak_report(), giving directly NULL as a
- * parent context implicitly refers to a hidden "null context" global
- * variable, so this should not be used in a multi-threaded environment
- * without proper synchronization
- * - the context returned by talloc_autofree_context() is also global so
- * shouldn't be used by several threads simultaneously without
- * synchronization.
- */
-
-/** \defgroup talloc_basic Basic Talloc Routines
- *
- * This module contains the basic talloc routines that are used in everyday
- * programming.
- */
-
-/**
- * \defgroup talloc_ref Talloc References
- *
- * This module contains the definitions around talloc references
- */
-
-/**
- * \defgroup talloc_array Array routines
- *
- * Talloc contains some handy helpers for handling Arrays conveniently
- */
-
-/**
- * \defgroup talloc_string String handling routines
- *
- * Talloc contains some handy string handling functions
- */
-
-/**
- * \defgroup talloc_debug Debugging support routines
- *
- * To aid memory debugging, talloc contains routines to inspect the currently
- * allocated memory hierarchy.
- */
-
-/**
- * \defgroup talloc_internal Internal routines
- *
- * To achieve type-safety, talloc.h defines a lot of macros with type
- * casts. These macros define the user interface to the internal routines you
- * find here. You should not really use these routines directly but go through
- * the external API.
- */
-
-/**
- * \defgroup talloc_undoc Default group of undocumented stuff
- *
- * This should be empty...
- */
-
-/*\{*/
-
-/**
- * \typedef TALLOC_CTX
- * \brief Define a talloc parent type
- * \ingroup talloc_basic
- *
- * As talloc is a hierarchial memory allocator, every talloc chunk is a
- * potential parent to other talloc chunks. So defining a separate type for a
- * talloc chunk is not strictly necessary. TALLOC_CTX is defined nevertheless,
- * as it provides an indicator for function arguments. You will frequently
- * write code like
- *
- * \code
- * struct foo *foo_create(TALLOC_CTX *mem_ctx)
- * {
- * struct foo *result;
- * result = talloc(mem_ctx, struct foo);
- * if (result == NULL) return NULL;
- * ... initialize foo ...
- * return result;
- * }
- * \endcode
- *
- * In this type of allocating functions it is handy to have a general
- * TALLOC_CTX type to indicate which parent to put allocated structures on.
- */
+/* this is only needed for compatibility with the old talloc */
typedef void TALLOC_CTX;
/*
#endif
#endif
-/**
- * \def talloc_set_destructor
- * \brief Assign a function to be called when a chunk is freed
- * \param ptr The talloc chunk to add a destructor to
- * \param function The destructor function to be called
- * \ingroup talloc_basic
- *
- * The function talloc_set_destructor() sets the "destructor" for the pointer
- * "ptr". A destructor is a function that is called when the memory used by a
- * pointer is about to be released. The destructor receives the pointer as an
- * argument, and should return 0 for success and -1 for failure.
- *
- * The destructor can do anything it wants to, including freeing other pieces
- * of memory. A common use for destructors is to clean up operating system
- * resources (such as open file descriptors) contained in the structure the
- * destructor is placed on.
- *
- * You can only place one destructor on a pointer. If you need more than one
- * destructor then you can create a zero-length child of the pointer and place
- * an additional destructor on that.
- *
- * To remove a destructor call talloc_set_destructor() with NULL for the
- * destructor.
- *
- * If your destructor attempts to talloc_free() the pointer that it is the
- * destructor for then talloc_free() will return -1 and the free will be
- * ignored. This would be a pointless operation anyway, as the destructor is
- * only called when the memory is just about to go away.
- */
-
-/**
- * \def talloc_steal(ctx, ptr)
- * \brief Change a talloc chunk's parent
- * \param ctx The new parent context
- * \param ptr The talloc chunk to move
- * \return ptr
- * \ingroup talloc_basic
- *
- * The talloc_steal() function changes the parent context of a talloc
- * pointer. It is typically used when the context that the pointer is
- * currently a child of is going to be freed and you wish to keep the
- * memory for a longer time.
- *
- * The talloc_steal() function returns the pointer that you pass it. It
- * does not have any failure modes.
- *
- * NOTE: It is possible to produce loops in the parent/child relationship
- * if you are not careful with talloc_steal(). No guarantees are provided
- * as to your sanity or the safety of your data if you do this.
- *
- * To make the changed hierarchy less error-prone, you might consider to use
- * talloc_move().
- *
- * talloc_steal (ctx, NULL) will return NULL with no sideeffects.
- */
-
/* try to make talloc_set_destructor() and talloc_steal() type safe,
if we have a recent gcc */
#if (__GNUC__ >= 3)
#define talloc_steal(ctx, ptr) (_TALLOC_TYPEOF(ptr))_talloc_steal((ctx),(ptr))
#endif
-/**
- * \def talloc_reference(ctx, ptr)
- * \brief Create an additional talloc parent to a pointer
- * \param ctx The additional parent
- * \param ptr The pointer you want to create an additional parent for
- * \return ptr
- * \ingroup talloc_ref
- *
- * The talloc_reference() function makes "context" an additional parent of
- * "ptr".
- *
- * The return value of talloc_reference() is always the original pointer
- * "ptr", unless talloc ran out of memory in creating the reference in which
- * case it will return NULL (each additional reference consumes around 48
- * bytes of memory on intel x86 platforms).
- *
- * If "ptr" is NULL, then the function is a no-op, and simply returns NULL.
- *
- * After creating a reference you can free it in one of the following ways:
- *
- * - you can talloc_free() any parent of the original pointer. That
- * will reduce the number of parents of this pointer by 1, and will
- * cause this pointer to be freed if it runs out of parents.
- *
- * - you can talloc_free() the pointer itself. That will destroy the
- * most recently established parent to the pointer and leave the
- * pointer as a child of its current parent.
- *
- * For more control on which parent to remove, see talloc_unlink()
- */
#define talloc_reference(ctx, ptr) (_TALLOC_TYPEOF(ptr))_talloc_reference((ctx),(ptr))
-
-
-/**
- * \def talloc_move(ctx, ptr)
- * \brief Change a talloc chunk's parent
- * \param ctx The new parent context
- * \param ptr Pointer to the talloc chunk to move
- * \return ptr
- * \ingroup talloc_basic
- *
- * talloc_move() has the same effect as talloc_steal(), and additionally sets
- * the source pointer to NULL. You would use it like this:
- *
- * \code
- * struct foo *X = talloc(tmp_ctx, struct foo);
- * struct foo *Y;
- * Y = talloc_move(new_ctx, &X);
- * \endcode
- */
#define talloc_move(ctx, ptr) (_TALLOC_TYPEOF(*(ptr)))_talloc_move((ctx),(void *)(ptr))
/* useful macros for creating type checked pointers */
-
-/**
- * \def talloc(ctx, type)
- * \brief Main entry point to allocate structures
- * \param ctx The talloc context to hang the result off
- * \param type The type that we want to allocate
- * \return Pointer to a piece of memory, properly cast to "type *"
- * \ingroup talloc_basic
- *
- * The talloc() macro is the core of the talloc library. It takes a memory
- * context and a type, and returns a pointer to a new area of memory of the
- * given type.
- *
- * The returned pointer is itself a talloc context, so you can use it as the
- * context argument to more calls to talloc if you wish.
- *
- * The returned pointer is a "child" of the supplied context. This means that
- * if you talloc_free() the context then the new child disappears as
- * well. Alternatively you can free just the child.
- *
- * The context argument to talloc() can be NULL, in which case a new top
- * level context is created.
- */
#define talloc(ctx, type) (type *)talloc_named_const(ctx, sizeof(type), #type)
-
-/**
- * \def talloc_size(ctx, size)
- * \brief Untyped allocation
- * \param ctx The talloc context to hang the result off
- * \param size Number of char's that you want to allocate
- * \return The allocated memory chunk
- * \ingroup talloc_basic
- *
- * The function talloc_size() should be used when you don't have a convenient
- * type to pass to talloc(). Unlike talloc(), it is not type safe (as it
- * returns a void *), so you are on your own for type checking.
- */
#define talloc_size(ctx, size) talloc_named_const(ctx, size, __location__)
-
-/**
- * \def talloc_ptrtype(ctx, ptr)
- * \brief Allocate into a typed pointer
- * \param ctx The talloc context to hang the result off
- * \param ptr The pointer you want to assign the result to
- * \result The allocated memory chunk, properly cast
- * \ingroup talloc_basic
- *
- * The talloc_ptrtype() macro should be used when you have a pointer and
- * want to allocate memory to point at with this pointer. When compiling
- * with gcc >= 3 it is typesafe. Note this is a wrapper of talloc_size()
- * and talloc_get_name() will return the current location in the source file.
- * and not the type.
- */
#define talloc_ptrtype(ctx, ptr) (_TALLOC_TYPEOF(ptr))talloc_size(ctx, sizeof(*(ptr)))
-/**
- * \def talloc_new(ctx)
- * \brief Allocate a new 0-sized talloc chunk
- * \param ctx The talloc parent context
- * \return A new talloc chunk
- * \ingroup talloc_basic
- *
- * This is a utility macro that creates a new memory context hanging off an
- * exiting context, automatically naming it "talloc_new: __location__" where
- * __location__ is the source line it is called from. It is particularly
- * useful for creating a new temporary working context.
- */
#define talloc_new(ctx) talloc_named_const(ctx, 0, "talloc_new: " __location__)
-/**
- * \def talloc_zero(ctx, type)
- * \brief Allocate a 0-initizialized structure
- * \param ctx The talloc context to hang the result off
- * \param type The type that we want to allocate
- * \return Pointer to a piece of memory, properly cast to "type *"
- * \ingroup talloc_basic
- *
- * The talloc_zero() macro is equivalent to:
- *
- * \code
- * ptr = talloc(ctx, type);
- * if (ptr) memset(ptr, 0, sizeof(type));
- * \endcode
- */
#define talloc_zero(ctx, type) (type *)_talloc_zero(ctx, sizeof(type), #type)
-
-/**
- * \def talloc_zero_size(ctx, size)
- * \brief Untyped, 0-initialized allocation
- * \param ctx The talloc context to hang the result off
- * \param size Number of char's that you want to allocate
- * \return The allocated memory chunk
- * \ingroup talloc_basic
- *
- * The talloc_zero_size() macro is equivalent to:
- *
- * \code
- * ptr = talloc_size(ctx, size);
- * if (ptr) memset(ptr, 0, size);
- * \endcode
- */
-
#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)
-
-/**
- * \def talloc_array(ctx, type, count)
- * \brief Allocate an array
- * \param ctx The talloc context to hang the result off
- * \param type The type that we want to allocate
- * \param count The number of "type" elements you want to allocate
- * \return The allocated result, properly cast to "type *"
- * \ingroup talloc_array
- *
- * The talloc_array() macro is equivalent to::
- *
- * \code
- * (type *)talloc_size(ctx, sizeof(type) * count);
- * \endcode
- *
- * except that it provides integer overflow protection for the multiply,
- * returning NULL if the multiply overflows.
- */
#define talloc_array(ctx, type, count) (type *)_talloc_array(ctx, sizeof(type), count, #type)
-
-/**
- * \def talloc_array_size(ctx, size, count)
- * \brief Allocate an array
- * \param ctx The talloc context to hang the result off
- * \param size The size of an array element
- * \param count The number of "type" elements you want to allocate
- * \return The allocated result, properly cast to "type *"
- * \ingroup talloc_array
- *
- * The talloc_array_size() function is useful when the type is not
- * known. It operates in the same way as talloc_array(), but takes a size
- * instead of a type.
- */
#define talloc_array_size(ctx, size, count) _talloc_array(ctx, size, count, __location__)
-
-/**
- * \def talloc_array_ptrtype(ctx, ptr, count)
- * \brief Allocate an array into a typed pointer
- * \param ctx The talloc context to hang the result off
- * \param ptr The pointer you want to assign the result to
- * \param count The number of elements you want to allocate
- * \result The allocated memory chunk, properly cast
- * \ingroup talloc_array
- *
- * The talloc_array_ptrtype() macro should be used when you have a pointer to
- * an array and want to allocate memory of an array to point at with this
- * pointer. When compiling with gcc >= 3 it is typesafe. Note this is a
- * wrapper of talloc_array_size() and talloc_get_name() will return the
- * current location in the source file. and not the type.
- */
#define talloc_array_ptrtype(ctx, ptr, count) (_TALLOC_TYPEOF(ptr))talloc_array_size(ctx, sizeof(*(ptr)), count)
-
-/**
- * \def talloc_array_length(ctx)
- * \brief Return the number of elements in a talloc'ed array
- * \param ctx The talloc'ed array
- * \return The number of elements in ctx
- * \ingroup talloc_array
- *
- * A talloc chunk carries its own size, so for talloc'ed arrays it is not
- * necessary to store the number of elements explicitly.
- */
#define talloc_array_length(ctx) ((ctx) ? talloc_get_size(ctx)/sizeof(*ctx) : 0)
-/**
- * \def talloc_realloc(ctx, p, type, count)
- * \brief Change the size of a talloc array
- * \param ctx The parent context used if "p" is NULL
- * \param p The chunk to be resized
- * \param type The type of the array element inside p
- * \param count The intended number of array elements
- * \return The new array
- * \ingroup talloc_array
- *
- * The talloc_realloc() macro changes the size of a talloc
- * pointer. The "count" argument is the number of elements of type "type"
- * that you want the resulting pointer to hold.
- *
- * talloc_realloc() has the following equivalences::
- *
- * \code
- * talloc_realloc(context, NULL, type, 1) ==> talloc(context, type);
- * talloc_realloc(context, NULL, type, N) ==> talloc_array(context, type, N);
- * talloc_realloc(context, ptr, type, 0) ==> talloc_free(ptr);
- * \endcode
- *
- * The "context" argument is only used if "ptr" is NULL, otherwise it is
- * ignored.
- *
- * talloc_realloc() returns the new pointer, or NULL on failure. The call
- * will fail either due to a lack of memory, or because the pointer has
- * more than one parent (see talloc_reference()).
- */
#define talloc_realloc(ctx, p, type, count) (type *)_talloc_realloc_array(ctx, p, sizeof(type), count, #type)
-
-/**
- * \def talloc_realloc_size(ctx, ptr, size)
- * \brief Untyped realloc
- * \param ctx The parent context used if "ptr" is NULL
- * \param ptr The chunk to be resized
- * \param size The new chunk size
- * \return The new chunk
- * \ingroup talloc_array
- *
- * The talloc_realloc_size() function is useful when the type is not known so
- * the typesafe talloc_realloc() cannot be used.
- */
#define talloc_realloc_size(ctx, ptr, size) _talloc_realloc(ctx, ptr, size, __location__)
-/**
- * \def talloc_memdup(t, p, size)
- * \brief Duplicate a memory area into a talloc chunk
- * \param t The talloc context to hang the result off
- * \param p The memory chunk you want to duplicate
- * \param size Number of char's that you want copy
- * \return The allocated memory chunk
- * \ingroup talloc_basic
- *
- * The talloc_memdup() function is equivalent to::
- *
- * \code
- * ptr = talloc_size(ctx, size);
- * if (ptr) memcpy(ptr, p, size);
- * \endcode
- */
#define talloc_memdup(t, p, size) _talloc_memdup(t, p, size, __location__)
-/**
- * \def talloc_set_type(ptr, type)
- * \brief Assign a type to a talloc chunk
- * \param ptr The talloc chunk to assign the type to
- * \param type The type to assign
- * \ingroup talloc_basic
- *
- * This macro allows you to force the name of a pointer to be a
- * particular type. This can be used in conjunction with
- * talloc_get_type() to do type checking on void* pointers.
- *
- * It is equivalent to this::
- *
- * \code
- * talloc_set_name_const(ptr, #type)
- * \endcode
- */
#define talloc_set_type(ptr, type) talloc_set_name_const(ptr, #type)
-
-/**
- * \def talloc_get_type(ptr, type)
- * \brief Get a typed pointer out of a talloc pointer
- * \param ptr The talloc pointer to check
- * \param type The type to check against
- * \return ptr, properly cast, or NULL
- * \ingroup talloc_basic
- *
- * This macro allows you to do type checking on talloc pointers. It is
- * particularly useful for void* private pointers. It is equivalent to
- * this:
- *
- * \code
- * (type *)talloc_check_name(ptr, #type)
- * \endcode
- */
-
#define talloc_get_type(ptr, type) (type *)talloc_check_name(ptr, #type)
-
-/**
- * \def talloc_get_type_abort(ptr, type)
- * \brief Helper macro to safely turn a void * into a typed pointer
- * \param ptr The void * to convert
- * \param type The type that this chunk contains
- * \return Same value as ptr, type-checked and properly cast
- * \ingroup talloc_basic
- *
- * This macro is used together with talloc(mem_ctx, struct foo). If you had to
- * assing the talloc chunk pointer to some void * variable,
- * talloc_get_type_abort() is the recommended way to get the convert the void
- * pointer back to a typed pointer.
- */
#define talloc_get_type_abort(ptr, type) (type *)_talloc_get_type_abort(ptr, #type, __location__)
-/**
- * \def talloc_find_parent_bytype(ptr, type)
- * \brief Find a parent context by type
- * \param ptr The talloc chunk to start from
- * \param type The type of the parent to look for
- * \ingroup talloc_basic
- *
- * Find a parent memory context of the current context that has the given
- * name. This can be very useful in complex programs where it may be
- * difficult to pass all information down to the level you need, but you
- * know the structure you want is a parent of another context.
- *
- * Like talloc_find_parent_byname() but takes a type, making it typesafe.
- */
#define talloc_find_parent_bytype(ptr, type) (type *)talloc_find_parent_byname(ptr, #type)
#if TALLOC_DEPRECATED
#define talloc_append_string(c, s, a) (s?talloc_strdup_append(s,a):talloc_strdup(c, a))
#endif
-/**
- * \def TALLOC_FREE(ctx)
- * \brief talloc_free a chunk and NULL out the pointer
- * \param ctx The chunk to be freed
- * \ingroup talloc_basic
- *
- * TALLOC_FREE() frees a pointer and sets it to NULL. Use this if you want
- * immediate feedback (i.e. crash) if you use a pointer after having free'ed
- * it.
- */
#define TALLOC_FREE(ctx) do { talloc_free(ctx); ctx=NULL; } while(0)
-/**
- * \brief Allocate untyped, unnamed memory
- * \param context The talloc context to hang the result off
- * \param size Number of char's that you want to allocate
- * \return The allocated memory chunk
- * \ingroup talloc_internal
- *
- * Essentially the same as talloc_size() without setting the chunk name to the
- * current file/line number.
- */
+/* The following definitions come from talloc.c */
void *_talloc(const void *context, size_t size);
-
-/**
- * \brief Allocate a talloc pool
- * \param context The talloc context to hang the result off
- * \param size Size of the talloc pool
- * \result The talloc pool
- * \ingroup talloc_basic
- *
- * A talloc pool is a pure optimization for specific situations. In the
- * release process for Samba 3.2 we found out that we had become considerably
- * slower than Samba 3.0 was. Profiling showed that malloc(3) was a large CPU
- * consumer in benchmarks. For Samba 3.2 we have internally converted many
- * static buffers to dynamically allocated ones, so malloc(3) being beaten
- * more was no surprise. But it made us slower.
- *
- * talloc_pool() is an optimization to call malloc(3) a lot less for the use
- * pattern Samba has: The SMB protocol is mainly a request/response protocol
- * where we have to allocate a certain amount of memory per request and free
- * that after the SMB reply is sent to the client.
- *
- * talloc_pool() creates a talloc chunk that you can use as a talloc parent
- * exactly as you would use any other ::TALLOC_CTX. The difference is that
- * when you talloc a child of this pool, no malloc(3) is done. Instead, talloc
- * just increments a pointer inside the talloc_pool. This also works
- * recursively. If you use the child of the talloc pool as a parent for
- * grand-children, their memory is also taken from the talloc pool.
- *
- * If you talloc_free() children of a talloc pool, the memory is not given
- * back to the system. Instead, free(3) is only called if the talloc_pool()
- * itself is released with talloc_free().
- *
- * The downside of a talloc pool is that if you talloc_move() a child of a
- * talloc pool to a talloc parent outside the pool, the whole pool memory is
- * not free(3)'ed until that moved chunk is also talloc_free()ed.
- */
void *talloc_pool(const void *context, size_t size);
void _talloc_set_destructor(const void *ptr, int (*destructor)(void *));
-
-/**
- * \brief Increase the reference count of a talloc chunk
- * \param ptr
- * \return success?
- * \ingroup talloc_ref
- *
- * The talloc_increase_ref_count(ptr) function is exactly equivalent to:
- *
- * \code
- * talloc_reference(NULL, ptr);
- * \endcode
- *
- * You can use either syntax, depending on which you think is clearer in
- * your code.
- *
- * It returns 0 on success and -1 on failure.
- */
int talloc_increase_ref_count(const void *ptr);
-
-/**
- * \brief Return the number of references to a talloc chunk
- * \param ptr The chunk you are interested in
- * \return Number of refs
- * \ingroup talloc_ref
- */
size_t talloc_reference_count(const void *ptr);
void *_talloc_reference(const void *context, const void *ptr);
-
-/**
- * \brief Remove a specific parent from a talloc chunk
- * \param context The talloc parent to remove
- * \param ptr The talloc ptr you want to remove the parent from
- * \ingroup talloc_ref
- *
- * The talloc_unlink() function removes a specific parent from ptr. The
- * context passed must either be a context used in talloc_reference() with
- * this pointer, or must be a direct parent of ptr.
- *
- * Note that if the parent has already been removed using talloc_free() then
- * this function will fail and will return -1. Likewise, if "ptr" is NULL,
- * then the function will make no modifications and return -1.
- *
- * Usually you can just use talloc_free() instead of talloc_unlink(), but
- * sometimes it is useful to have the additional control on which parent is
- * removed.
- */
int talloc_unlink(const void *context, void *ptr);
-
-/**
- * \brief Assign a name to a talloc chunk
- * \param ptr The talloc chunk to assign a name to
- * \param fmt Format string for the name
- * \param ... printf-style additional arguments
- * \return The assigned name
- * \ingroup talloc_basic
- *
- * Each talloc pointer has a "name". The name is used principally for
- * debugging purposes, although it is also possible to set and get the name on
- * a pointer in as a way of "marking" pointers in your code.
- *
- * The main use for names on pointer is for "talloc reports". See
- * talloc_report() and talloc_report_full() for details. Also see
- * talloc_enable_leak_report() and talloc_enable_leak_report_full().
- *
- * The talloc_set_name() function allocates memory as a child of the
- * pointer. It is logically equivalent to:
- *
- * \code
- * talloc_set_name_const(ptr, talloc_asprintf(ptr, fmt, ...));
- * \endcode
- *
- * Note that multiple calls to talloc_set_name() will allocate more memory
- * without releasing the name. All of the memory is released when the ptr is
- * freed using talloc_free().
- */
const char *talloc_set_name(const void *ptr, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
-
-/**
- * \brief Assign a name to a talloc chunk
- * \param ptr The talloc chunk to assign a name to
- * \param name Format string for the name
- * \ingroup talloc_basic
- *
- * The function talloc_set_name_const() is just like talloc_set_name(), but it
- * takes a string constant, and is much faster. It is extensively used by the
- * "auto naming" macros, such as talloc_p().
- *
- * This function does not allocate any memory. It just copies the supplied
- * pointer into the internal representation of the talloc ptr. This means you
- * must not pass a name pointer to memory that will disappear before the ptr
- * is freed with talloc_free().
- */
void talloc_set_name_const(const void *ptr, const char *name);
-
-/**
- * \brief Create a named talloc chunk
- * \param context The talloc context to hang the result off
- * \param size Number of char's that you want to allocate
- * \param fmt Format string for the name
- * \param ... printf-style additional arguments
- * \return The allocated memory chunk
- * \ingroup talloc_basic
- *
- * The talloc_named() function creates a named talloc pointer. It is
- * equivalent to:
- *
- * \code
- * ptr = talloc_size(context, size);
- * talloc_set_name(ptr, fmt, ....);
- * \endcode
- *
- */
void *talloc_named(const void *context, size_t size,
const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
-
-/**
- * \brief Basic routine to allocate a chunk of memory
- * \param context The parent context
- * \param size The number of char's that we want to allocate
- * \param name The name the talloc block has
- * \return The allocated chunk
- * \ingroup talloc_basic
- *
- * This is equivalent to:
- *
- * \code
- * ptr = talloc_size(context, size);
- * talloc_set_name_const(ptr, name);
- * \endcode
- */
void *talloc_named_const(const void *context, size_t size, const char *name);
-
-/**
- * \brief Return the name of a talloc chunk
- * \param ptr The talloc chunk
- * \return The name
- * \ingroup talloc_basic
- *
- * This returns the current name for the given talloc pointer. See
- * talloc_set_name() for details.
- */
const char *talloc_get_name(const void *ptr);
-
-/**
- * \brief Verify that a talloc chunk carries a specified name
- * \param ptr The talloc chunk to check
- * \param name The name to check agains
- * \ingroup talloc_basic
- *
- * This function checks if a pointer has the specified name. If it does
- * then the pointer is returned. It it doesn't then NULL is returned.
- */
void *talloc_check_name(const void *ptr, const char *name);
-
void *_talloc_get_type_abort(const void *ptr, const char *name, const char *location);
void *talloc_parent(const void *ptr);
const char *talloc_parent_name(const void *ptr);
-
-/**
- * \brief Create a new top level talloc context
- * \param fmt Format string for the name
- * \param ... printf-style additional arguments
- * \return The allocated memory chunk
- * \ingroup talloc_basic
- *
- * This function creates a zero length named talloc context as a top level
- * context. It is equivalent to:
- *
- * \code
- * talloc_named(NULL, 0, fmt, ...);
- * \endcode
- */
void *talloc_init(const char *fmt, ...) PRINTF_ATTRIBUTE(1,2);
-
-/**
- * \brief Free a chunk of talloc memory
- * \param ptr The chunk to be freed
- * \return success?
- * \ingroup talloc_basic
- *
- * The talloc_free() function frees a piece of talloc memory, and all its
- * children. You can call talloc_free() on any pointer returned by talloc().
- *
- * The return value of talloc_free() indicates success or failure, with 0
- * returned for success and -1 for failure. The only possible failure
- * condition is if the pointer had a destructor attached to it and the
- * destructor returned -1. See talloc_set_destructor() for details on
- * destructors.
- *
- * If this pointer has an additional parent when talloc_free() is called
- * then the memory is not actually released, but instead the most
- * recently established parent is destroyed. See talloc_reference() for
- * details on establishing additional parents.
- *
- * For more control on which parent is removed, see talloc_unlink()
- *
- * talloc_free() operates recursively on its children.
- */
int talloc_free(void *ptr);
-
-/**
- * \brief Free a talloc chunk's children
- * \param ptr The chunk that you want to free the children of
- * \return success?
- * \ingroup talloc_basic
- *
- * The talloc_free_children() walks along the list of all children of a talloc
- * context and talloc_free()s only the children, not the context itself.
- */
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);
-
-/**
- * \brief Return the total size of a talloc chunk including its children
- * \param ptr The talloc chunk
- * \return The total size
- * \ingroup talloc_basic
- *
- * The talloc_total_size() function returns the total size in bytes used
- * by this pointer and all child pointers. Mostly useful for debugging.
- *
- * Passing NULL is allowed, but it will only give a meaningful result if
- * talloc_enable_leak_report() or talloc_enable_leak_report_full() has
- * been called.
- */
size_t talloc_total_size(const void *ptr);
-
-/**
- * \brief Return the number of talloc chunks hanging off a chunk
- * \param ptr The talloc chunk
- * \return The total size
- * \ingroup talloc_basic
- *
- * The talloc_total_blocks() function returns the total memory block
- * count used by this pointer and all child pointers. Mostly useful for
- * debugging.
- *
- * Passing NULL is allowed, but it will only give a meaningful result if
- * talloc_enable_leak_report() or talloc_enable_leak_report_full() has
- * been called.
- */
size_t talloc_total_blocks(const void *ptr);
-
-/**
- * \brief Walk a complete talloc hierarchy
- * \param ptr The talloc chunk
- * \param depth Internal parameter to control recursion. Call with 0.
- * \param max_depth Maximum recursion level.
- * \param callback Function to be called on every chunk
- * \param private_data Private pointer passed to callback
- * \ingroup talloc_debug
- *
- * This provides a more flexible reports than talloc_report(). It
- * will recursively call the callback for the entire tree of memory
- * referenced by the pointer. References in the tree are passed with
- * is_ref = 1 and the pointer that is referenced.
- *
- * You can pass NULL for the pointer, in which case a report is
- * printed for the top level memory context, but only if
- * talloc_enable_leak_report() or talloc_enable_leak_report_full()
- * has been called.
- *
- * The recursion is stopped when depth >= max_depth.
- * max_depth = -1 means only stop at leaf nodes.
- */
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);
-
-/**
- * \brief Print a talloc hierarchy
- * \param ptr The talloc chunk
- * \param depth Internal parameter to control recursion. Call with 0.
- * \param max_depth Maximum recursion level.
- * \param f The file handle to print to
- * \ingroup talloc_debug
- *
- * This provides a more flexible reports than talloc_report(). It
- * will let you specify the depth and max_depth.
- */
void talloc_report_depth_file(const void *ptr, int depth, int max_depth, FILE *f);
-
-/**
- * \brief Print a summary report of all memory used by ptr
- * \param ptr The talloc chunk
- * \param f The file handle to print to
- * \ingroup talloc_debug
- *
- * This provides a more detailed report than talloc_report(). It will
- * recursively print the ensire tree of memory referenced by the
- * pointer. References in the tree are shown by giving the name of the
- * pointer that is referenced.
- *
- * You can pass NULL for the pointer, in which case a report is printed
- * for the top level memory context, but only if
- * talloc_enable_leak_report() or talloc_enable_leak_report_full() has
- * been called.
- */
void talloc_report_full(const void *ptr, FILE *f);
-
-/**
- * \brief Print a summary report of all memory used by ptr
- * \param ptr The talloc chunk
- * \param f The file handle to print to
- * \ingroup talloc_debug
- *
- * The talloc_report() function prints a summary report of all memory
- * used by ptr. One line of report is printed for each immediate child of
- * ptr, showing the total memory and number of blocks used by that child.
- *
- * You can pass NULL for the pointer, in which case a report is printed
- * for the top level memory context, but only if
- * talloc_enable_leak_report() or talloc_enable_leak_report_full() has
- * been called.
- */
void talloc_report(const void *ptr, FILE *f);
-
-/**
- * \brief Enable tracking the use of NULL memory contexts
- * \ingroup talloc_debug
- *
- * This enables tracking of the NULL memory context without enabling leak
- * reporting on exit. Useful for when you want to do your own leak
- * reporting call via talloc_report_null_full();
- */
void talloc_enable_null_tracking(void);
-
-/**
- * \brief Disable tracking of the NULL memory context
- * \ingroup talloc_debug
- *
- * This disables tracking of the NULL memory context.
- */
-
void talloc_disable_null_tracking(void);
-
-/**
- * \brief Enable calling of talloc_report(NULL, stderr) when a program exits
- * \ingroup talloc_debug
- *
- * This enables calling of talloc_report(NULL, stderr) when the program
- * exits. In Samba4 this is enabled by using the --leak-report command
- * line option.
- *
- * For it to be useful, this function must be called before any other
- * talloc function as it establishes a "null context" that acts as the
- * top of the tree. If you don't call this function first then passing
- * NULL to talloc_report() or talloc_report_full() won't give you the
- * full tree printout.
- *
- * Here is a typical talloc report:
- *
-\verbatim
-talloc report on 'null_context' (total 267 bytes in 15 blocks)
- libcli/auth/spnego_parse.c:55 contains 31 bytes in 2 blocks
- libcli/auth/spnego_parse.c:55 contains 31 bytes in 2 blocks
- iconv(UTF8,CP850) contains 42 bytes in 2 blocks
- libcli/auth/spnego_parse.c:55 contains 31 bytes in 2 blocks
- iconv(CP850,UTF8) contains 42 bytes in 2 blocks
- iconv(UTF8,UTF-16LE) contains 45 bytes in 2 blocks
- iconv(UTF-16LE,UTF8) contains 45 bytes in 2 blocks
-\endverbatim
- */
void talloc_enable_leak_report(void);
-
-/**
- * \brief Enable calling of talloc_report(NULL, stderr) when a program exits
- * \ingroup talloc_debug
- *
- * This enables calling of talloc_report_full(NULL, stderr) when the
- * program exits. In Samba4 this is enabled by using the
- * --leak-report-full command line option.
- *
- * For it to be useful, this function must be called before any other
- * talloc function as it establishes a "null context" that acts as the
- * top of the tree. If you don't call this function first then passing
- * NULL to talloc_report() or talloc_report_full() won't give you the
- * full tree printout.
- *
- * Here is a typical full report:
-\verbatim
-full talloc report on 'root' (total 18 bytes in 8 blocks)
- p1 contains 18 bytes in 7 blocks (ref 0)
- r1 contains 13 bytes in 2 blocks (ref 0)
- reference to: p2
- p2 contains 1 bytes in 1 blocks (ref 1)
- x3 contains 1 bytes in 1 blocks (ref 0)
- x2 contains 1 bytes in 1 blocks (ref 0)
- x1 contains 1 bytes in 1 blocks (ref 0)
-\endverbatim
-*/
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);
-
-/**
- * \brief Provide a function version of talloc_realloc_size
- * \param context The parent context used if "ptr" is NULL
- * \param ptr The chunk to be resized
- * \param size The new chunk size
- * \return The new chunk
- * \ingroup talloc_array
- *
- * This is a non-macro version of talloc_realloc(), which is useful as
- * libraries sometimes want a ralloc function pointer. A realloc()
- * implementation encapsulates the functionality of malloc(), free() and
- * realloc() in one call, which is why it is useful to be able to pass around
- * a single function pointer.
-*/
void *talloc_realloc_fn(const void *context, void *ptr, size_t size);
-
-/**
- * \brief Provide a talloc context that is freed at program exit
- * \return A talloc context
- * \ingroup talloc_basic
- *
- * This is a handy utility function that returns a talloc context
- * which will be automatically freed on program exit. This can be used
- * to reduce the noise in memory leak reports.
- */
void *talloc_autofree_context(void);
-
-/**
- * \brief Get the size of a talloc chunk
- * \param ctx The talloc chunk
- * \return The size
- * \ingroup talloc_basic
- *
- * This function lets you know the amount of memory alloced so far by
- * this context. It does NOT account for subcontext memory.
- * This can be used to calculate the size of an array.
- */
size_t talloc_get_size(const void *ctx);
-
-/**
- * \brief Find a parent context by name
- * \param ctx The talloc chunk to start from
- * \param name The name of the parent we look for
- * \ingroup talloc_basic
- *
- * Find a parent memory context of the current context that has the given
- * name. This can be very useful in complex programs where it may be
- * difficult to pass all information down to the level you need, but you
- * know the structure you want is a parent of another context.
- */
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);
-/**
- * \brief Duplicate a string into a talloc chunk
- * \param t The talloc context to hang the result off
- * \param p The string you want to duplicate
- * \return The duplicated string
- * \ingroup talloc_string
- *
- * The talloc_strdup() function is equivalent to:
- *
- * \code
- * ptr = talloc_size(ctx, strlen(p)+1);
- * if (ptr) memcpy(ptr, p, strlen(p)+1);
- * \endcode
- *
- * This functions sets the name of the new pointer to the passed
- * string. This is equivalent to:
- *
- * \code
- * talloc_set_name_const(ptr, ptr)
- * \endcode
- */
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);
-/**
- * \brief Duplicate a length-limited string into a talloc chunk
- * \param t The talloc context to hang the result off
- * \param p The string you want to duplicate
- * \param n The maximum string length to duplicate
- * \return The duplicated string
- * \ingroup talloc_string
- *
- * The talloc_strndup() function is the talloc equivalent of the C
- * library function strndup()
- *
- * This functions sets the name of the new pointer to the passed
- * string. This is equivalent to:
- *
- * \code
- * talloc_set_name_const(ptr, ptr)
- * \endcode
- */
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);
-/**
- * \brief Format a string given a va_list
- * \param t The talloc context to hang the result off
- * \param fmt The format string
- * \param ap The parameters used to fill fmt
- * \return The formatted string
- * \ingroup talloc_string
- *
- * The talloc_vasprintf() function is the talloc equivalent of the C
- * library function vasprintf()
- *
- * This functions sets the name of the new pointer to the new
- * string. This is equivalent to:
- *
- * \code
- * talloc_set_name_const(ptr, ptr)
- * \endcode
- */
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);
-/**
- * \brief Format a string
- * \param t The talloc context to hang the result off
- * \param fmt The format string
- * \param ... The parameters used to fill fmt
- * \return The formatted string
- * \ingroup talloc_string
- *
- * The talloc_asprintf() function is the talloc equivalent of the C
- * library function asprintf()
- *
- * This functions sets the name of the new pointer to the new
- * string. This is equivalent to:
- *
- * \code
- * talloc_set_name_const(ptr, ptr)
- * \endcode
- */
char *talloc_asprintf(const void *t, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
-
-/**
- * \brief Append a formatted string to another string
- * \param s The string to append to
- * \param fmt The format string
- * \param ... The parameters used to fill fmt
- * \return The formatted string
- * \ingroup talloc_string
- *
- * The talloc_asprintf_append() function appends the given formatted string to
- * the given string. Use this varient when the string in the current talloc
- * buffer may have been truncated in length.
- *
- * This functions sets the name of the new pointer to the new
- * string. This is equivalent to:
- *
- * \code
- * talloc_set_name_const(ptr, ptr)
- * \endcode
- */
char *talloc_asprintf_append(char *s, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
-
-/**
- * \brief Append a formatted string to another string
- * \param s The string to append to
- * \param fmt The format string
- * \param ... The parameters used to fill fmt
- * \return The formatted string
- * \ingroup talloc_string
- *
- * The talloc_asprintf_append() function appends the given formatted string to
- * the end of the currently allocated talloc buffer. This routine should be
- * used if you create a large string step by step. talloc_asprintf() or
- * talloc_asprintf_append() call strlen() at every
- * step. talloc_asprintf_append_buffer() uses the existing buffer size of the
- * talloc chunk to calculate where to append the string.
- *
- * This functions sets the name of the new pointer to the new
- * string. This is equivalent to:
- *
- * \code
- * talloc_set_name_const(ptr, ptr)
- * \endcode
- */
char *talloc_asprintf_append_buffer(char *s, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
void talloc_set_abort_fn(void (*abort_fn)(const char *reason));
#endif
-
-/*\}*/
git.samba.org / ira / wip.git / blobdiff