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prepared deprecation of GMemChunk and GAllocator. added g_slice_*() API to

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Tue Nov  1 16:24:20 2005  Tim Janik  <timj@imendio.com>

        * glib/gmem.[hc]: prepared deprecation of GMemChunk and GAllocator.
        added g_slice_*() API to allocate and cache small bits of memory.
        an actuall allocator implementation for g_slice_*() is still pending.

        * glib/gthread.[hc]: changes from a patch by Matthias Clasen.
        changed GRealThread list to use in-structure *next; fields instead
        of GSList, in order for thread iteration to not depenend on g_slice_*()
        indirectly.
        _g_thread_mem_private_get():
        _g_thread_mem_private_set(): added accessors for private memory,
        needed because the ordinary GPrivate implementation relies on GArray
        and GSList and therefore indirectly on working g_slice_*() allocations.

        * glib/gthread.[hc]:
        g_thread_foreach(): new public API function to loop over all existing threads.

        * glib/gdataset.c:
        * glib/gstring.c:
        * glib/gcache.c:
        * glib/garray.c:
        * glib/gqueue.c:
        * glib/gslist.c:
        * glib/glist.c:
        * glib/ghash.c:
        * glib/gtree.c:
        * glib/ghook.c:
        * glib/gmain.c:
        * glib/gnode.c:
        removed GAllocator and free list usages and accompanying locks.
        use g_slice_*() API to allocate and cache small bits of memory.

        * glib/ghook.h: removed GMemChunk field from public API.

        * glib/gslist.h:
        * glib/glist.h: deprecate allocator API, provide _free1() for consistency.

        * glib/gnode.h: deprecate allocator API.

        * glib/gmain.c: reordered GPollRec fields so g_slice_free_chain() can
        be used for poll rec lists.

        * glib/grel.c: removed mem chunk usage, and allocated tuples via g_slice_*().
        g_relation_destroy(): free all tuples from the all_tuples hash table,
        this effectively maintains the life time track keeping of tuples.
        g_relation_delete_tuple(): free tuples which are removed from the
        all_tuples hash table. this fixes a temporary leak that was present
        in the memchunk code until the destruction of the relation.
This commit is contained in:
Tim Janik
2005-11-01 18:10:31 +00:00
committed by Tim Janik
parent 3a042a8959
commit 0cba1b531d
28 changed files with 518 additions and 1063 deletions
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74
glib/gmem.h
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@@ -31,8 +31,6 @@
G_BEGIN_DECLS
typedef struct _GAllocator GAllocator;
typedef struct _GMemChunk GMemChunk;
typedef struct _GMemVTable GMemVTable;
@@ -98,9 +96,24 @@ gboolean g_mem_is_system_malloc (void);
GLIB_VAR GMemVTable *glib_mem_profiler_table;
void g_mem_profile (void);
/* Memchunk convenience functions
/* slices - fast allocation/release of small memory blocks
*/
gpointer g_slice_alloc (guint block_size);
gpointer g_slice_alloc0 (guint block_size);
void g_slice_free1 (guint block_size,
gpointer mem_block);
void g_slice_free_chain (guint block_size,
gpointer mem_chain,
guint next_offset);
#define g_slice_new(type) ((type*) g_slice_alloc (sizeof (type)))
#define g_slice_new0(type) ((type*) g_slice_alloc0 (sizeof (type)))
#define g_slice_free(type,mem) g_slice_free1 (sizeof (type), mem)
/* deprecated memchunks and allocators */
#if !defined G_DISABLE_DEPRECATED || 1
typedef struct _GAllocator GAllocator;
typedef struct _GMemChunk GMemChunk;
#define g_mem_chunk_create(type, pre_alloc, alloc_type) ( \
g_mem_chunk_new (#type " mem chunks (" #pre_alloc ")", \
sizeof (type), \
@@ -116,30 +129,8 @@ void g_mem_profile (void);
#define g_chunk_free(mem, mem_chunk) G_STMT_START { \
g_mem_chunk_free ((mem_chunk), (mem)); \
} G_STMT_END
/* "g_mem_chunk_new" creates a new memory chunk.
* Memory chunks are used to allocate pieces of memory which are
* always the same size. Lists are a good example of such a data type.
* The memory chunk allocates and frees blocks of memory as needed.
* Just be sure to call "g_mem_chunk_free" and not "g_free" on data
* allocated in a mem chunk. ("g_free" will most likely cause a seg
* fault...somewhere).
*
* Oh yeah, GMemChunk is an opaque data type. (You don't really
* want to know what's going on inside do you?)
*/
/* ALLOC_ONLY MemChunks can only allocate memory. The free operation
* is interpreted as a no op. ALLOC_ONLY MemChunks save 4 bytes per
* atom. (They are also useful for lists which use MemChunk to allocate
* memory but are also part of the MemChunk implementation).
* ALLOC_AND_FREE MemChunks can allocate and free memory.
*/
#define G_ALLOC_ONLY 1
#define G_ALLOC_AND_FREE 2
GMemChunk* g_mem_chunk_new (const gchar *name,
gint atom_size,
gulong area_size,
@@ -153,29 +144,14 @@ void g_mem_chunk_clean (GMemChunk *mem_chunk);
void g_mem_chunk_reset (GMemChunk *mem_chunk);
void g_mem_chunk_print (GMemChunk *mem_chunk);
void g_mem_chunk_info (void);
/* Ah yes...we have a "g_blow_chunks" function.
* "g_blow_chunks" simply compresses all the chunks. This operation
* consists of freeing every memory area that should be freed (but
* which we haven't gotten around to doing yet). And, no,
* "g_blow_chunks" doesn't follow the naming scheme, but it is a
* much better name than "g_mem_chunk_clean_all" or something
* similar.
*/
void g_blow_chunks (void);
/* Generic allocators
*/
GAllocator* g_allocator_new (const gchar *name,
guint n_preallocs);
void g_allocator_free (GAllocator *allocator);
/* internal */
#define G_ALLOCATOR_LIST (1)
#define G_ALLOCATOR_SLIST (2)
#define G_ALLOCATOR_NODE (3)
void g_blow_chunks (void);
GAllocator*g_allocator_new (const gchar *name,
guint n_preallocs);
void g_allocator_free (GAllocator *allocator);
#define G_ALLOCATOR_LIST (1)
#define G_ALLOCATOR_SLIST (2)
#define G_ALLOCATOR_NODE (3)
#endif /* G_DISABLE_DEPRECATED */
G_END_DECLS