* MT safe
*/
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
+#include "config.h"
#include <stdlib.h>
#include <string.h>
+#include <signal.h>
+
#include "glib.h"
+#include "gthreadprivate.h"
+#include "galias.h"
+
+#define MEM_PROFILE_TABLE_SIZE 4096
/* notes on macros:
- * having DISABLE_MEM_POOLS defined, disables mem_chunks alltogether, their
- * allocations are performed through ordinary g_malloc/g_free.
* having G_DISABLE_CHECKS defined disables use of glib_mem_profiler_table and
* g_mem_profile().
* REALLOC_0_WORKS is defined if g_realloc (NULL, x) works.
* SANE_MALLOC_PROTOS is defined if the systems malloc() and friends functions
* match the corresponding GLib prototypes, keep configure.in and gmem.h in sync here.
- * if ENABLE_GC_FRIENDLY is defined, freed memory should be 0-wiped.
+ * g_mem_gc_friendly is TRUE, freed memory should be 0-wiped.
*/
-#define MEM_PROFILE_TABLE_SIZE 4096
-
-#define MEM_AREA_SIZE 4L
+/* --- prototypes --- */
+static gboolean g_mem_initialized = FALSE;
+static void g_mem_init_nomessage (void);
-#ifdef G_DISABLE_CHECKS
-# define ENTER_MEM_CHUNK_ROUTINE()
-# define LEAVE_MEM_CHUNK_ROUTINE()
-# define IN_MEM_CHUNK_ROUTINE() FALSE
-#else /* !G_DISABLE_CHECKS */
-static GPrivate* mem_chunk_recursion = NULL;
-# define MEM_CHUNK_ROUTINE_COUNT() GPOINTER_TO_UINT (g_private_get (mem_chunk_recursion))
-# define ENTER_MEM_CHUNK_ROUTINE() g_private_set (mem_chunk_recursion, GUINT_TO_POINTER (MEM_CHUNK_ROUTINE_COUNT () + 1))
-# define LEAVE_MEM_CHUNK_ROUTINE() g_private_set (mem_chunk_recursion, GUINT_TO_POINTER (MEM_CHUNK_ROUTINE_COUNT () - 1))
-#endif /* !G_DISABLE_CHECKS */
+/* --- malloc wrappers --- */
#ifndef REALLOC_0_WORKS
static gpointer
standard_realloc (gpointer mem,
static void
standard_free (gpointer mem)
{
- return free (mem);
+ free (mem);
}
static gpointer
standard_calloc (gsize n_blocks,
gpointer
g_malloc (gulong n_bytes)
{
- if (n_bytes)
+ if (G_UNLIKELY (!g_mem_initialized))
+ g_mem_init_nomessage();
+ if (G_LIKELY (n_bytes))
{
gpointer mem;
gpointer
g_malloc0 (gulong n_bytes)
{
- if (n_bytes)
+ if (G_UNLIKELY (!g_mem_initialized))
+ g_mem_init_nomessage();
+ if (G_LIKELY (n_bytes))
{
gpointer mem;
g_realloc (gpointer mem,
gulong n_bytes)
{
- if (n_bytes)
+ if (G_UNLIKELY (!g_mem_initialized))
+ g_mem_init_nomessage();
+ if (G_LIKELY (n_bytes))
{
mem = glib_mem_vtable.realloc (mem, n_bytes);
if (mem)
void
g_free (gpointer mem)
{
- if (mem)
+ if (G_UNLIKELY (!g_mem_initialized))
+ g_mem_init_nomessage();
+ if (G_LIKELY (mem))
glib_mem_vtable.free (mem);
}
gpointer
g_try_malloc (gulong n_bytes)
{
- if (n_bytes)
+ if (G_UNLIKELY (!g_mem_initialized))
+ g_mem_init_nomessage();
+ if (G_LIKELY (n_bytes))
return glib_mem_vtable.try_malloc (n_bytes);
else
return NULL;
}
gpointer
+g_try_malloc0 (gulong n_bytes)
+{
+ gpointer mem;
+
+ mem = g_try_malloc (n_bytes);
+
+ if (mem)
+ memset (mem, 0, n_bytes);
+
+ return mem;
+}
+
+gpointer
g_try_realloc (gpointer mem,
gulong n_bytes)
{
- if (n_bytes)
+ if (G_UNLIKELY (!g_mem_initialized))
+ g_mem_init_nomessage();
+ if (G_LIKELY (n_bytes))
return glib_mem_vtable.try_realloc (mem, n_bytes);
if (mem)
return mem;
}
+static gboolean vtable_set = FALSE;
+
+/**
+ * g_mem_is_system_malloc
+ *
+ * Checks whether the allocator used by g_malloc() is the system's
+ * malloc implementation. If it returns %TRUE memory allocated with
+ * malloc() can be used interchangeable with memory allocated using g_malloc().
+ * This function is useful for avoiding an extra copy of allocated memory returned
+ * by a non-GLib-based API.
+ *
+ * A different allocator can be set using g_mem_set_vtable().
+ *
+ * Return value: if %TRUE, malloc() and g_malloc() can be mixed.
+ **/
+gboolean
+g_mem_is_system_malloc (void)
+{
+ return !vtable_set;
+}
+
void
g_mem_set_vtable (GMemVTable *vtable)
{
- gboolean vtable_set = FALSE;
-
if (!vtable_set)
{
- vtable_set |= TRUE;
if (vtable->malloc && vtable->realloc && vtable->free)
{
glib_mem_vtable.malloc = vtable->malloc;
glib_mem_vtable.calloc = vtable->calloc ? vtable->calloc : fallback_calloc;
glib_mem_vtable.try_malloc = vtable->try_malloc ? vtable->try_malloc : glib_mem_vtable.malloc;
glib_mem_vtable.try_realloc = vtable->try_realloc ? vtable->try_realloc : glib_mem_vtable.realloc;
+ vtable_set = TRUE;
}
else
g_warning (G_STRLOC ": memory allocation vtable lacks one of malloc(), realloc() or free()");
} ProfilerJob;
static guint *profile_data = NULL;
static gulong profile_allocs = 0;
-static gulong profile_mc_allocs = 0;
static gulong profile_zinit = 0;
static gulong profile_frees = 0;
-static gulong profile_mc_frees = 0;
-static GMutex *g_profile_mutex = NULL;
+static GMutex *gmem_profile_mutex = NULL;
#ifdef G_ENABLE_DEBUG
static volatile gulong g_trap_free_size = 0;
static volatile gulong g_trap_realloc_size = 0;
gulong n_bytes,
gboolean success)
{
- g_mutex_lock (g_profile_mutex);
+ g_mutex_lock (gmem_profile_mutex);
if (!profile_data)
{
- profile_data = standard_malloc ((MEM_PROFILE_TABLE_SIZE + 1) * 8 * sizeof (profile_data[0]));
+ profile_data = standard_calloc ((MEM_PROFILE_TABLE_SIZE + 1) * 8,
+ sizeof (profile_data[0]));
if (!profile_data) /* memory system kiddin' me, eh? */
{
- g_mutex_unlock (g_profile_mutex);
+ g_mutex_unlock (gmem_profile_mutex);
return;
}
}
- if (MEM_CHUNK_ROUTINE_COUNT () == 0)
- {
- if (n_bytes < MEM_PROFILE_TABLE_SIZE)
- profile_data[n_bytes + PROFILE_TABLE ((job & PROFILER_ALLOC) != 0,
- (job & PROFILER_RELOC) != 0,
- success != 0)] += 1;
- else
- profile_data[MEM_PROFILE_TABLE_SIZE + PROFILE_TABLE ((job & PROFILER_ALLOC) != 0,
- (job & PROFILER_RELOC) != 0,
- success != 0)] += 1;
- if (success)
- {
- if (job & PROFILER_ALLOC)
- {
- profile_allocs += n_bytes;
- if (job & PROFILER_ZINIT)
- profile_zinit += n_bytes;
- }
- else
- profile_frees += n_bytes;
- }
- }
- else if (success)
+ if (n_bytes < MEM_PROFILE_TABLE_SIZE)
+ profile_data[n_bytes + PROFILE_TABLE ((job & PROFILER_ALLOC) != 0,
+ (job & PROFILER_RELOC) != 0,
+ success != 0)] += 1;
+ else
+ profile_data[MEM_PROFILE_TABLE_SIZE + PROFILE_TABLE ((job & PROFILER_ALLOC) != 0,
+ (job & PROFILER_RELOC) != 0,
+ success != 0)] += 1;
+ if (success)
{
if (job & PROFILER_ALLOC)
- profile_mc_allocs += n_bytes;
+ {
+ profile_allocs += n_bytes;
+ if (job & PROFILER_ZINIT)
+ profile_zinit += n_bytes;
+ }
else
- profile_mc_frees += n_bytes;
+ profile_frees += n_bytes;
}
- g_mutex_unlock (g_profile_mutex);
+ g_mutex_unlock (gmem_profile_mutex);
}
static void
g_mem_profile (void)
{
guint local_data[(MEM_PROFILE_TABLE_SIZE + 1) * 8 * sizeof (profile_data[0])];
- gulong local_allocs = profile_allocs;
- gulong local_zinit = profile_zinit;
- gulong local_frees = profile_frees;
- gulong local_mc_allocs = profile_mc_allocs;
- gulong local_mc_frees = profile_mc_frees;
+ gulong local_allocs;
+ gulong local_zinit;
+ gulong local_frees;
+
+ if (G_UNLIKELY (!g_mem_initialized))
+ g_mem_init_nomessage();
+
+ g_mutex_lock (gmem_profile_mutex);
- g_mutex_lock (g_profile_mutex);
+ local_allocs = profile_allocs;
+ local_zinit = profile_zinit;
+ local_frees = profile_frees;
if (!profile_data)
{
- g_mutex_unlock (g_profile_mutex);
+ g_mutex_unlock (gmem_profile_mutex);
return;
}
- memcpy (local_data, profile_data, (MEM_PROFILE_TABLE_SIZE + 1) * 8 * sizeof (profile_data[0]));
+ memcpy (local_data, profile_data,
+ (MEM_PROFILE_TABLE_SIZE + 1) * 8 * sizeof (profile_data[0]));
+ g_mutex_unlock (gmem_profile_mutex);
+
g_print ("GLib Memory statistics (successful operations):\n");
profile_print_locked (local_data, TRUE);
g_print ("GLib Memory statistics (failing operations):\n");
local_frees,
((gdouble) local_frees) / local_allocs * 100.0,
local_allocs - local_frees);
- g_print ("MemChunk bytes: allocated=%lu, freed=%lu (%.2f%%), remaining=%lu\n",
- local_mc_allocs,
- local_mc_frees,
- ((gdouble) local_mc_frees) / local_mc_allocs * 100.0,
- local_mc_allocs - local_mc_frees);
- g_mutex_unlock (g_profile_mutex);
}
static gpointer
if (mem && p[0]) /* free count */
{
- g_warning ("realloc(%p, %u): memory has been freed %lu times already", p + 2, n_bytes, p[0]);
+ g_warning ("realloc(%p, %lu): memory has been freed %lu times already", p + 2, (gulong)n_bytes, p[0]);
profiler_log (PROFILER_ALLOC | PROFILER_RELOC, n_bytes, FALSE);
return NULL;
#endif /* !G_DISABLE_CHECKS */
-
/* --- MemChunks --- */
-typedef struct _GFreeAtom GFreeAtom;
-typedef struct _GMemArea GMemArea;
-typedef struct _GRealMemChunk GRealMemChunk;
-
-struct _GFreeAtom
-{
- GFreeAtom *next;
-};
-
-struct _GMemArea
-{
- GMemArea *next; /* the next mem area */
- GMemArea *prev; /* the previous mem area */
- gulong index; /* the current index into the "mem" array */
- gulong free; /* the number of free bytes in this mem area */
- gulong allocated; /* the number of atoms allocated from this area */
- gulong mark; /* is this mem area marked for deletion */
- gchar mem[MEM_AREA_SIZE]; /* the mem array from which atoms get allocated
- * the actual size of this array is determined by
- * the mem chunk "area_size". ANSI says that it
- * must be declared to be the maximum size it
- * can possibly be (even though the actual size
- * may be less).
- */
-};
-
-struct _GRealMemChunk
-{
- gchar *name; /* name of this MemChunk...used for debugging output */
- gint type; /* the type of MemChunk: ALLOC_ONLY or ALLOC_AND_FREE */
- gint num_mem_areas; /* the number of memory areas */
- gint num_marked_areas; /* the number of areas marked for deletion */
- guint atom_size; /* the size of an atom */
- gulong area_size; /* the size of a memory area */
- GMemArea *mem_area; /* the current memory area */
- GMemArea *mem_areas; /* a list of all the mem areas owned by this chunk */
- GMemArea *free_mem_area; /* the free area...which is about to be destroyed */
- GFreeAtom *free_atoms; /* the free atoms list */
- GTree *mem_tree; /* tree of mem areas sorted by memory address */
- GRealMemChunk *next; /* pointer to the next chunk */
- GRealMemChunk *prev; /* pointer to the previous chunk */
-};
-
-
-#ifndef DISABLE_MEM_POOLS
-static gulong g_mem_chunk_compute_size (gulong size,
- gulong min_size) G_GNUC_CONST;
-static gint g_mem_chunk_area_compare (GMemArea *a,
- GMemArea *b);
-static gint g_mem_chunk_area_search (GMemArea *a,
- gchar *addr);
-
-/* here we can't use StaticMutexes, as they depend upon a working
- * g_malloc, the same holds true for StaticPrivate
- */
-static GMutex *mem_chunks_lock = NULL;
-static GRealMemChunk *mem_chunks = NULL;
-
-GMemChunk*
-g_mem_chunk_new (gchar *name,
- gint atom_size,
- gulong area_size,
- gint type)
-{
- GRealMemChunk *mem_chunk;
- gulong rarea_size;
-
- g_return_val_if_fail (atom_size > 0, NULL);
- g_return_val_if_fail (area_size >= atom_size, NULL);
-
- ENTER_MEM_CHUNK_ROUTINE ();
-
- area_size = (area_size + atom_size - 1) / atom_size;
- area_size *= atom_size;
-
- mem_chunk = g_new (struct _GRealMemChunk, 1);
- mem_chunk->name = name;
- mem_chunk->type = type;
- mem_chunk->num_mem_areas = 0;
- mem_chunk->num_marked_areas = 0;
- mem_chunk->mem_area = NULL;
- mem_chunk->free_mem_area = NULL;
- mem_chunk->free_atoms = NULL;
- mem_chunk->mem_tree = NULL;
- mem_chunk->mem_areas = NULL;
- mem_chunk->atom_size = atom_size;
-
- if (mem_chunk->type == G_ALLOC_AND_FREE)
- mem_chunk->mem_tree = g_tree_new ((GCompareFunc) g_mem_chunk_area_compare);
-
- if (mem_chunk->atom_size % G_MEM_ALIGN)
- mem_chunk->atom_size += G_MEM_ALIGN - (mem_chunk->atom_size % G_MEM_ALIGN);
-
- rarea_size = area_size + sizeof (GMemArea) - MEM_AREA_SIZE;
- rarea_size = g_mem_chunk_compute_size (rarea_size, atom_size + sizeof (GMemArea) - MEM_AREA_SIZE);
- mem_chunk->area_size = rarea_size - (sizeof (GMemArea) - MEM_AREA_SIZE);
-
- g_mutex_lock (mem_chunks_lock);
- mem_chunk->next = mem_chunks;
- mem_chunk->prev = NULL;
- if (mem_chunks)
- mem_chunks->prev = mem_chunk;
- mem_chunks = mem_chunk;
- g_mutex_unlock (mem_chunks_lock);
-
- LEAVE_MEM_CHUNK_ROUTINE ();
-
- return ((GMemChunk*) mem_chunk);
-}
-
-void
-g_mem_chunk_destroy (GMemChunk *mem_chunk)
-{
- GRealMemChunk *rmem_chunk;
- GMemArea *mem_areas;
- GMemArea *temp_area;
-
- g_return_if_fail (mem_chunk != NULL);
-
- ENTER_MEM_CHUNK_ROUTINE ();
-
- rmem_chunk = (GRealMemChunk*) mem_chunk;
-
- mem_areas = rmem_chunk->mem_areas;
- while (mem_areas)
- {
- temp_area = mem_areas;
- mem_areas = mem_areas->next;
- g_free (temp_area);
- }
-
- if (rmem_chunk->next)
- rmem_chunk->next->prev = rmem_chunk->prev;
- if (rmem_chunk->prev)
- rmem_chunk->prev->next = rmem_chunk->next;
-
- g_mutex_lock (mem_chunks_lock);
- if (rmem_chunk == mem_chunks)
- mem_chunks = mem_chunks->next;
- g_mutex_unlock (mem_chunks_lock);
-
- if (rmem_chunk->type == G_ALLOC_AND_FREE)
- g_tree_destroy (rmem_chunk->mem_tree);
-
- g_free (rmem_chunk);
-
- LEAVE_MEM_CHUNK_ROUTINE ();
-}
-
-gpointer
-g_mem_chunk_alloc (GMemChunk *mem_chunk)
-{
- GRealMemChunk *rmem_chunk;
- GMemArea *temp_area;
- gpointer mem;
-
- ENTER_MEM_CHUNK_ROUTINE ();
-
- g_return_val_if_fail (mem_chunk != NULL, NULL);
-
- rmem_chunk = (GRealMemChunk*) mem_chunk;
-
- while (rmem_chunk->free_atoms)
- {
- /* Get the first piece of memory on the "free_atoms" list.
- * We can go ahead and destroy the list node we used to keep
- * track of it with and to update the "free_atoms" list to
- * point to its next element.
- */
- mem = rmem_chunk->free_atoms;
- rmem_chunk->free_atoms = rmem_chunk->free_atoms->next;
-
- /* Determine which area this piece of memory is allocated from */
- temp_area = g_tree_search (rmem_chunk->mem_tree,
- (GCompareFunc) g_mem_chunk_area_search,
- mem);
-
- /* If the area has been marked, then it is being destroyed.
- * (ie marked to be destroyed).
- * We check to see if all of the segments on the free list that
- * reference this area have been removed. This occurs when
- * the ammount of free memory is less than the allocatable size.
- * If the chunk should be freed, then we place it in the "free_mem_area".
- * This is so we make sure not to free the mem area here and then
- * allocate it again a few lines down.
- * If we don't allocate a chunk a few lines down then the "free_mem_area"
- * will be freed.
- * If there is already a "free_mem_area" then we'll just free this mem area.
- */
- if (temp_area->mark)
- {
- /* Update the "free" memory available in that area */
- temp_area->free += rmem_chunk->atom_size;
-
- if (temp_area->free == rmem_chunk->area_size)
- {
- if (temp_area == rmem_chunk->mem_area)
- rmem_chunk->mem_area = NULL;
-
- if (rmem_chunk->free_mem_area)
- {
- rmem_chunk->num_mem_areas -= 1;
-
- if (temp_area->next)
- temp_area->next->prev = temp_area->prev;
- if (temp_area->prev)
- temp_area->prev->next = temp_area->next;
- if (temp_area == rmem_chunk->mem_areas)
- rmem_chunk->mem_areas = rmem_chunk->mem_areas->next;
-
- if (rmem_chunk->type == G_ALLOC_AND_FREE)
- g_tree_remove (rmem_chunk->mem_tree, temp_area);
- g_free (temp_area);
- }
- else
- rmem_chunk->free_mem_area = temp_area;
-
- rmem_chunk->num_marked_areas -= 1;
- }
- }
- else
- {
- /* Update the number of allocated atoms count.
- */
- temp_area->allocated += 1;
-
- /* The area wasn't marked...return the memory
- */
- goto outa_here;
- }
- }
-
- /* If there isn't a current mem area or the current mem area is out of space
- * then allocate a new mem area. We'll first check and see if we can use
- * the "free_mem_area". Otherwise we'll just malloc the mem area.
- */
- if ((!rmem_chunk->mem_area) ||
- ((rmem_chunk->mem_area->index + rmem_chunk->atom_size) > rmem_chunk->area_size))
- {
- if (rmem_chunk->free_mem_area)
- {
- rmem_chunk->mem_area = rmem_chunk->free_mem_area;
- rmem_chunk->free_mem_area = NULL;
- }
- else
- {
-#ifdef ENABLE_GC_FRIENDLY
- rmem_chunk->mem_area = (GMemArea*) g_malloc0 (sizeof (GMemArea) -
- MEM_AREA_SIZE +
- rmem_chunk->area_size);
-#else /* !ENABLE_GC_FRIENDLY */
- rmem_chunk->mem_area = (GMemArea*) g_malloc (sizeof (GMemArea) -
- MEM_AREA_SIZE +
- rmem_chunk->area_size);
-#endif /* ENABLE_GC_FRIENDLY */
-
- rmem_chunk->num_mem_areas += 1;
- rmem_chunk->mem_area->next = rmem_chunk->mem_areas;
- rmem_chunk->mem_area->prev = NULL;
-
- if (rmem_chunk->mem_areas)
- rmem_chunk->mem_areas->prev = rmem_chunk->mem_area;
- rmem_chunk->mem_areas = rmem_chunk->mem_area;
-
- if (rmem_chunk->type == G_ALLOC_AND_FREE)
- g_tree_insert (rmem_chunk->mem_tree, rmem_chunk->mem_area, rmem_chunk->mem_area);
- }
-
- rmem_chunk->mem_area->index = 0;
- rmem_chunk->mem_area->free = rmem_chunk->area_size;
- rmem_chunk->mem_area->allocated = 0;
- rmem_chunk->mem_area->mark = 0;
- }
-
- /* Get the memory and modify the state variables appropriately.
- */
- mem = (gpointer) &rmem_chunk->mem_area->mem[rmem_chunk->mem_area->index];
- rmem_chunk->mem_area->index += rmem_chunk->atom_size;
- rmem_chunk->mem_area->free -= rmem_chunk->atom_size;
- rmem_chunk->mem_area->allocated += 1;
-
-outa_here:
-
- LEAVE_MEM_CHUNK_ROUTINE ();
-
- return mem;
-}
-
-gpointer
-g_mem_chunk_alloc0 (GMemChunk *mem_chunk)
-{
- gpointer mem;
-
- mem = g_mem_chunk_alloc (mem_chunk);
- if (mem)
- {
- GRealMemChunk *rmem_chunk = (GRealMemChunk*) mem_chunk;
-
- memset (mem, 0, rmem_chunk->atom_size);
- }
-
- return mem;
-}
-
-void
-g_mem_chunk_free (GMemChunk *mem_chunk,
- gpointer mem)
-{
- GRealMemChunk *rmem_chunk;
- GMemArea *temp_area;
- GFreeAtom *free_atom;
-
- g_return_if_fail (mem_chunk != NULL);
- g_return_if_fail (mem != NULL);
-
- ENTER_MEM_CHUNK_ROUTINE ();
-
- rmem_chunk = (GRealMemChunk*) mem_chunk;
-
-#ifdef ENABLE_GC_FRIENDLY
- memset (mem, 0, rmem_chunk->atom_size);
-#endif /* ENABLE_GC_FRIENDLY */
-
- /* Don't do anything if this is an ALLOC_ONLY chunk
- */
- if (rmem_chunk->type == G_ALLOC_AND_FREE)
- {
- /* Place the memory on the "free_atoms" list
- */
- free_atom = (GFreeAtom*) mem;
- free_atom->next = rmem_chunk->free_atoms;
- rmem_chunk->free_atoms = free_atom;
-
- temp_area = g_tree_search (rmem_chunk->mem_tree,
- (GCompareFunc) g_mem_chunk_area_search,
- mem);
-
- temp_area->allocated -= 1;
-
- if (temp_area->allocated == 0)
- {
- temp_area->mark = 1;
- rmem_chunk->num_marked_areas += 1;
- }
- }
-
- LEAVE_MEM_CHUNK_ROUTINE ();
-}
-
-/* This doesn't free the free_area if there is one */
-void
-g_mem_chunk_clean (GMemChunk *mem_chunk)
-{
- GRealMemChunk *rmem_chunk;
- GMemArea *mem_area;
- GFreeAtom *prev_free_atom;
- GFreeAtom *temp_free_atom;
- gpointer mem;
-
- g_return_if_fail (mem_chunk != NULL);
-
- ENTER_MEM_CHUNK_ROUTINE ();
-
- rmem_chunk = (GRealMemChunk*) mem_chunk;
-
- if (rmem_chunk->type == G_ALLOC_AND_FREE)
- {
- prev_free_atom = NULL;
- temp_free_atom = rmem_chunk->free_atoms;
-
- while (temp_free_atom)
- {
- mem = (gpointer) temp_free_atom;
-
- mem_area = g_tree_search (rmem_chunk->mem_tree,
- (GCompareFunc) g_mem_chunk_area_search,
- mem);
-
- /* If this mem area is marked for destruction then delete the
- * area and list node and decrement the free mem.
- */
- if (mem_area->mark)
- {
- if (prev_free_atom)
- prev_free_atom->next = temp_free_atom->next;
- else
- rmem_chunk->free_atoms = temp_free_atom->next;
- temp_free_atom = temp_free_atom->next;
-
- mem_area->free += rmem_chunk->atom_size;
- if (mem_area->free == rmem_chunk->area_size)
- {
- rmem_chunk->num_mem_areas -= 1;
- rmem_chunk->num_marked_areas -= 1;
-
- if (mem_area->next)
- mem_area->next->prev = mem_area->prev;
- if (mem_area->prev)
- mem_area->prev->next = mem_area->next;
- if (mem_area == rmem_chunk->mem_areas)
- rmem_chunk->mem_areas = rmem_chunk->mem_areas->next;
- if (mem_area == rmem_chunk->mem_area)
- rmem_chunk->mem_area = NULL;
-
- if (rmem_chunk->type == G_ALLOC_AND_FREE)
- g_tree_remove (rmem_chunk->mem_tree, mem_area);
- g_free (mem_area);
- }
- }
- else
- {
- prev_free_atom = temp_free_atom;
- temp_free_atom = temp_free_atom->next;
- }
- }
- }
- LEAVE_MEM_CHUNK_ROUTINE ();
-}
-
-void
-g_mem_chunk_reset (GMemChunk *mem_chunk)
-{
- GRealMemChunk *rmem_chunk;
- GMemArea *mem_areas;
- GMemArea *temp_area;
-
- g_return_if_fail (mem_chunk != NULL);
-
- ENTER_MEM_CHUNK_ROUTINE ();
-
- rmem_chunk = (GRealMemChunk*) mem_chunk;
-
- mem_areas = rmem_chunk->mem_areas;
- rmem_chunk->num_mem_areas = 0;
- rmem_chunk->mem_areas = NULL;
- rmem_chunk->mem_area = NULL;
-
- while (mem_areas)
- {
- temp_area = mem_areas;
- mem_areas = mem_areas->next;
- g_free (temp_area);
- }
-
- rmem_chunk->free_atoms = NULL;
-
- if (rmem_chunk->mem_tree)
- g_tree_destroy (rmem_chunk->mem_tree);
- rmem_chunk->mem_tree = g_tree_new ((GCompareFunc) g_mem_chunk_area_compare);
-
- LEAVE_MEM_CHUNK_ROUTINE ();
-}
-
-void
-g_mem_chunk_print (GMemChunk *mem_chunk)
-{
- GRealMemChunk *rmem_chunk;
- GMemArea *mem_areas;
- gulong mem;
-
- g_return_if_fail (mem_chunk != NULL);
-
- rmem_chunk = (GRealMemChunk*) mem_chunk;
- mem_areas = rmem_chunk->mem_areas;
- mem = 0;
-
- while (mem_areas)
- {
- mem += rmem_chunk->area_size - mem_areas->free;
- mem_areas = mem_areas->next;
- }
-
- g_log (g_log_domain_glib, G_LOG_LEVEL_INFO,
- "%s: %ld bytes using %d mem areas",
- rmem_chunk->name, mem, rmem_chunk->num_mem_areas);
-}
-
-void
-g_mem_chunk_info (void)
-{
- GRealMemChunk *mem_chunk;
- gint count;
-
- count = 0;
- g_mutex_lock (mem_chunks_lock);
- mem_chunk = mem_chunks;
- while (mem_chunk)
- {
- count += 1;
- mem_chunk = mem_chunk->next;
- }
- g_mutex_unlock (mem_chunks_lock);
-
- g_log (g_log_domain_glib, G_LOG_LEVEL_INFO, "%d mem chunks", count);
-
- g_mutex_lock (mem_chunks_lock);
- mem_chunk = mem_chunks;
- g_mutex_unlock (mem_chunks_lock);
-
- while (mem_chunk)
- {
- g_mem_chunk_print ((GMemChunk*) mem_chunk);
- mem_chunk = mem_chunk->next;
- }
-}
-
-void
-g_blow_chunks (void)
-{
- GRealMemChunk *mem_chunk;
-
- g_mutex_lock (mem_chunks_lock);
- mem_chunk = mem_chunks;
- g_mutex_unlock (mem_chunks_lock);
- while (mem_chunk)
- {
- g_mem_chunk_clean ((GMemChunk*) mem_chunk);
- mem_chunk = mem_chunk->next;
- }
-}
-
-static gulong
-g_mem_chunk_compute_size (gulong size,
- gulong min_size)
-{
- gulong power_of_2;
- gulong lower, upper;
-
- power_of_2 = 16;
- while (power_of_2 < size)
- power_of_2 <<= 1;
-
- lower = power_of_2 >> 1;
- upper = power_of_2;
-
- if (size - lower < upper - size && lower >= min_size)
- return lower;
- else
- return upper;
-}
-
-static gint
-g_mem_chunk_area_compare (GMemArea *a,
- GMemArea *b)
-{
- if (a->mem > b->mem)
- return 1;
- else if (a->mem < b->mem)
- return -1;
- return 0;
-}
-
-static gint
-g_mem_chunk_area_search (GMemArea *a,
- gchar *addr)
-{
- if (a->mem <= addr)
- {
- if (addr < &a->mem[a->index])
- return 0;
- return 1;
- }
- return -1;
-}
-
-#else /* DISABLE_MEM_POOLS */
+#ifndef G_ALLOC_AND_FREE
+typedef struct _GAllocator GAllocator;
+typedef struct _GMemChunk GMemChunk;
+#define G_ALLOC_ONLY 1
+#define G_ALLOC_AND_FREE 2
+#endif
-typedef struct {
+struct _GMemChunk {
guint alloc_size; /* the size of an atom */
-} GMinimalMemChunk;
+};
GMemChunk*
-g_mem_chunk_new (gchar *name,
- gint atom_size,
- gulong area_size,
- gint type)
+g_mem_chunk_new (const gchar *name,
+ gint atom_size,
+ gulong area_size,
+ gint type)
{
- GMinimalMemChunk *mem_chunk;
-
+ GMemChunk *mem_chunk;
g_return_val_if_fail (atom_size > 0, NULL);
- mem_chunk = g_new (GMinimalMemChunk, 1);
+ mem_chunk = g_slice_new (GMemChunk);
mem_chunk->alloc_size = atom_size;
-
- return ((GMemChunk*) mem_chunk);
+ return mem_chunk;
}
void
{
g_return_if_fail (mem_chunk != NULL);
- g_free (mem_chunk);
+ g_slice_free (GMemChunk, mem_chunk);
}
gpointer
g_mem_chunk_alloc (GMemChunk *mem_chunk)
{
- GMinimalMemChunk *minimal = (GMinimalMemChunk *)mem_chunk;
-
g_return_val_if_fail (mem_chunk != NULL, NULL);
- return g_malloc (minimal->alloc_size);
+ return g_slice_alloc (mem_chunk->alloc_size);
}
gpointer
g_mem_chunk_alloc0 (GMemChunk *mem_chunk)
{
- GMinimalMemChunk *minimal = (GMinimalMemChunk *)mem_chunk;
-
g_return_val_if_fail (mem_chunk != NULL, NULL);
- return g_malloc0 (minimal->alloc_size);
+ return g_slice_alloc0 (mem_chunk->alloc_size);
}
void
{
g_return_if_fail (mem_chunk != NULL);
- g_free (mem);
+ g_slice_free1 (mem_chunk->alloc_size, mem);
}
void g_mem_chunk_clean (GMemChunk *mem_chunk) {}
void g_mem_chunk_info (void) {}
void g_blow_chunks (void) {}
-#endif /* DISABLE_MEM_POOLS */
-
-
-/* generic allocators
- */
-struct _GAllocator /* from gmem.c */
-{
- gchar *name;
- guint16 n_preallocs;
- guint is_unused : 1;
- guint type : 4;
- GAllocator *last;
- GMemChunk *mem_chunk;
- gpointer dummy; /* implementation specific */
-};
-
GAllocator*
g_allocator_new (const gchar *name,
guint n_preallocs)
{
- GAllocator *allocator;
-
- g_return_val_if_fail (name != NULL, NULL);
-
- allocator = g_new0 (GAllocator, 1);
- allocator->name = g_strdup (name);
- allocator->n_preallocs = CLAMP (n_preallocs, 1, 65535);
- allocator->is_unused = TRUE;
- allocator->type = 0;
- allocator->last = NULL;
- allocator->mem_chunk = NULL;
- allocator->dummy = NULL;
-
- return allocator;
+ static struct _GAllocator {
+ gchar *name;
+ guint16 n_preallocs;
+ guint is_unused : 1;
+ guint type : 4;
+ GAllocator *last;
+ GMemChunk *mem_chunk;
+ gpointer free_list;
+ } dummy = {
+ "GAllocator is deprecated", 1, TRUE, 0, NULL, NULL, NULL,
+ };
+ /* some (broken) GAllocator uses depend on non-NULL allocators */
+ return (void*) &dummy;
}
void
g_allocator_free (GAllocator *allocator)
{
- g_return_if_fail (allocator != NULL);
- g_return_if_fail (allocator->is_unused == TRUE);
+}
- g_free (allocator->name);
- if (allocator->mem_chunk)
- g_mem_chunk_destroy (allocator->mem_chunk);
+#ifdef ENABLE_GC_FRIENDLY_DEFAULT
+gboolean g_mem_gc_friendly = TRUE;
+#else
+gboolean g_mem_gc_friendly = FALSE;
+#endif
- g_free (allocator);
+static void
+g_mem_init_nomessage (void)
+{
+ gchar buffer[1024];
+ const gchar *val;
+ const GDebugKey keys[] = {
+ { "gc-friendly", 1 },
+ };
+ gint flags;
+ if (g_mem_initialized)
+ return;
+ /* don't use g_malloc/g_message here */
+ val = _g_getenv_nomalloc ("G_DEBUG", buffer);
+ flags = !val ? 0 : g_parse_debug_string (val, keys, G_N_ELEMENTS (keys));
+ if (flags & 1) /* gc-friendly */
+ {
+ g_mem_gc_friendly = TRUE;
+ }
+ g_mem_initialized = TRUE;
}
void
-g_mem_init (void)
+_g_mem_thread_init_noprivate_nomessage (void)
{
-#ifndef DISABLE_MEM_POOLS
- mem_chunks_lock = g_mutex_new ();
-#endif
+ /* we may only create mutexes here, locking/
+ * unlocking a mutex does not yet work.
+ */
+ g_mem_init_nomessage();
#ifndef G_DISABLE_CHECKS
- mem_chunk_recursion = g_private_new (NULL);
- g_profile_mutex = g_mutex_new ();
+ gmem_profile_mutex = g_mutex_new ();
#endif
}
+
+#define __G_MEM_C__
+#include "galiasdef.c"
projects / platform / upstream / glib.git / blobdiff