* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
+ * modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 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
- * Library General Public License for more details.
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU Library General Public
+ * You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
+
+/*
+ * Modified by the GLib Team and others 1997-2000. See the AUTHORS
+ * file for a list of people on the GLib Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GLib at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+/*
+ * MT safe
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
#include <stdlib.h>
#include <string.h>
#include "glib.h"
-/* #define ENABLE_MEM_PROFILE */
-/* #define ENABLE_MEM_CHECK */
-
-
-#define MAX_MEM_AREA 65536L
-#define MEM_AREA_SIZE 4L
-#if SIZEOF_VOID_P > SIZEOF_LONG
-#define MEM_ALIGN SIZEOF_VOID_P
-#else
-#define MEM_ALIGN SIZEOF_LONG
-#endif
+/* 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.
+ */
+#define MEM_PROFILE_TABLE_SIZE 4096
-typedef struct _GFreeAtom GFreeAtom;
-typedef struct _GMemArea GMemArea;
-typedef struct _GRealMemChunk GRealMemChunk;
+#define MEM_AREA_SIZE 4L
-struct _GFreeAtom
+#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 */
+
+#ifndef REALLOC_0_WORKS
+static gpointer
+standard_realloc (gpointer mem,
+ gsize n_bytes)
{
- GFreeAtom *next;
-};
-
-struct _GMemArea
+ if (!mem)
+ return malloc (n_bytes);
+ else
+ return realloc (mem, n_bytes);
+}
+#endif /* !REALLOC_0_WORKS */
+
+#ifdef SANE_MALLOC_PROTOS
+# define standard_malloc malloc
+# ifdef REALLOC_0_WORKS
+# define standard_realloc realloc
+# endif /* REALLOC_0_WORKS */
+# define standard_free free
+# define standard_calloc calloc
+# define standard_try_malloc malloc
+# define standard_try_realloc realloc
+#else /* !SANE_MALLOC_PROTOS */
+static gpointer
+standard_malloc (gsize n_bytes)
{
- 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
+ return malloc (n_bytes);
+}
+# ifdef REALLOC_0_WORKS
+static gpointer
+standard_realloc (gpointer mem,
+ gsize n_bytes)
{
- 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 */
+ return realloc (mem, n_bytes);
+}
+# endif /* REALLOC_0_WORKS */
+static void
+standard_free (gpointer mem)
+{
+ free (mem);
+}
+static gpointer
+standard_calloc (gsize n_blocks,
+ gsize n_bytes)
+{
+ return calloc (n_blocks, n_bytes);
+}
+#define standard_try_malloc standard_malloc
+#define standard_try_realloc standard_realloc
+#endif /* !SANE_MALLOC_PROTOS */
+
+
+/* --- variables --- */
+static GMemVTable glib_mem_vtable = {
+ standard_malloc,
+ standard_realloc,
+ standard_free,
+ standard_calloc,
+ standard_try_malloc,
+ standard_try_realloc,
};
-static gulong g_mem_chunk_compute_size (gulong size);
-static gint g_mem_chunk_area_compare (GMemArea *a,
- GMemArea *b);
-static gint g_mem_chunk_area_search (GMemArea *a,
- gchar *addr);
-
-
-static GRealMemChunk *mem_chunks = NULL;
-
-#ifdef ENABLE_MEM_PROFILE
-static gulong allocations[4096] = { 0 };
-static gulong allocated_mem = 0;
-static gulong freed_mem = 0;
-#endif /* ENABLE_MEM_PROFILE */
-
-
-#ifndef USE_DMALLOC
-
+/* --- functions --- */
gpointer
-g_malloc (gulong size)
+g_malloc (gulong n_bytes)
{
- gpointer p;
-
-
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- gulong *t;
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
+ if (n_bytes)
+ {
+ gpointer mem;
+ mem = glib_mem_vtable.malloc (n_bytes);
+ if (mem)
+ return mem;
- if (size == 0)
- return NULL;
+ g_error ("%s: failed to allocate %lu bytes", G_STRLOC, n_bytes);
+ }
+ return NULL;
+}
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- size += SIZEOF_LONG;
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
+gpointer
+g_malloc0 (gulong n_bytes)
+{
+ if (n_bytes)
+ {
+ gpointer mem;
-#ifdef ENABLE_MEM_CHECK
- size += SIZEOF_LONG;
-#endif /* ENABLE_MEM_CHECK */
+ mem = glib_mem_vtable.calloc (1, n_bytes);
+ if (mem)
+ return mem;
+ g_error ("%s: failed to allocate %lu bytes", G_STRLOC, n_bytes);
+ }
- p = (gpointer) malloc (size);
- if (!p)
- g_error ("could not allocate %ld bytes", size);
+ return NULL;
+}
+gpointer
+g_realloc (gpointer mem,
+ gulong n_bytes)
+{
+ if (n_bytes)
+ {
+ mem = glib_mem_vtable.realloc (mem, n_bytes);
+ if (mem)
+ return mem;
-#ifdef ENABLE_MEM_CHECK
- size -= SIZEOF_LONG;
+ g_error ("%s: failed to allocate %lu bytes", G_STRLOC, n_bytes);
+ }
- t = p;
- p = ((guchar*) p + SIZEOF_LONG);
- *t = 0;
-#endif /* ENABLE_MEM_CHECK */
+ if (mem)
+ glib_mem_vtable.free (mem);
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- size -= SIZEOF_LONG;
+ return NULL;
+}
- t = p;
- p = ((guchar*) p + SIZEOF_LONG);
- *t = size;
+void
+g_free (gpointer mem)
+{
+ if (mem)
+ glib_mem_vtable.free (mem);
+}
-#ifdef ENABLE_MEM_PROFILE
- if (size <= 4095)
- allocations[size-1] += 1;
+gpointer
+g_try_malloc (gulong n_bytes)
+{
+ if (n_bytes)
+ return glib_mem_vtable.try_malloc (n_bytes);
else
- allocations[4095] += 1;
- allocated_mem += size;
-#endif /* ENABLE_MEM_PROFILE */
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
-
-
- return p;
+ return NULL;
}
gpointer
-g_malloc0 (gulong size)
+g_try_realloc (gpointer mem,
+ gulong n_bytes)
{
- gpointer p;
+ if (n_bytes)
+ return glib_mem_vtable.try_realloc (mem, n_bytes);
+ if (mem)
+ glib_mem_vtable.free (mem);
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- gulong *t;
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
+ return NULL;
+}
+static gpointer
+fallback_calloc (gsize n_blocks,
+ gsize n_block_bytes)
+{
+ gsize l = n_blocks * n_block_bytes;
+ gpointer mem = glib_mem_vtable.malloc (l);
- if (size == 0)
- return NULL;
+ if (mem)
+ memset (mem, 0, l);
+ return mem;
+}
-#ifdef ENABLE_MEM_PROFILE
- size += SIZEOF_LONG;
-#endif /* ENABLE_MEM_PROFILE */
+void
+g_mem_set_vtable (GMemVTable *vtable)
+{
+ gboolean vtable_set = FALSE;
-#ifdef ENABLE_MEM_CHECK
- size += SIZEOF_LONG;
-#endif /* ENABLE_MEM_CHECK */
+ if (!vtable_set)
+ {
+ vtable_set |= TRUE;
+ if (vtable->malloc && vtable->realloc && vtable->free)
+ {
+ glib_mem_vtable.malloc = vtable->malloc;
+ glib_mem_vtable.realloc = vtable->realloc;
+ glib_mem_vtable.free = vtable->free;
+ 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;
+ }
+ else
+ g_warning (G_STRLOC ": memory allocation vtable lacks one of malloc(), realloc() or free()");
+ }
+ else
+ g_warning (G_STRLOC ": memory allocation vtable can only be set once at startup");
+}
- p = (gpointer) calloc (size, 1);
- if (!p)
- g_error ("could not allocate %ld bytes", size);
+/* --- memory profiling and checking --- */
+#ifdef G_DISABLE_CHECKS
+GMemVTable *glib_mem_profiler_table = &glib_mem_vtable;
+void
+g_mem_profile (void)
+{
+}
+#else /* !G_DISABLE_CHECKS */
+typedef enum {
+ PROFILER_FREE = 0,
+ PROFILER_ALLOC = 1,
+ PROFILER_RELOC = 2,
+ PROFILER_ZINIT = 4
+} 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;
+#ifdef G_ENABLE_DEBUG
+static volatile gulong g_trap_free_size = 0;
+static volatile gulong g_trap_realloc_size = 0;
+static volatile gulong g_trap_malloc_size = 0;
+#endif /* G_ENABLE_DEBUG */
+
+#define PROFILE_TABLE(f1,f2,f3) ( ( ((f3) << 2) | ((f2) << 1) | (f1) ) * (MEM_PROFILE_TABLE_SIZE + 1))
+
+static void
+profiler_log (ProfilerJob job,
+ gulong n_bytes,
+ gboolean success)
+{
+ g_mutex_lock (g_profile_mutex);
+ if (!profile_data)
+ {
+ profile_data = standard_malloc ((MEM_PROFILE_TABLE_SIZE + 1) * 8 * sizeof (profile_data[0]));
+ if (!profile_data) /* memory system kiddin' me, eh? */
+ {
+ g_mutex_unlock (g_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 (job & PROFILER_ALLOC)
+ profile_mc_allocs += n_bytes;
+ else
+ profile_mc_frees += n_bytes;
+ }
+ g_mutex_unlock (g_profile_mutex);
+}
-#ifdef ENABLE_MEM_CHECK
- size -= SIZEOF_LONG;
+static void
+profile_print_locked (guint *local_data,
+ gboolean success)
+{
+ gboolean need_header = TRUE;
+ guint i;
- t = p;
- p = ((guchar*) p + SIZEOF_LONG);
- *t = 0;
-#endif /* ENABLE_MEM_CHECK */
+ for (i = 0; i <= MEM_PROFILE_TABLE_SIZE; i++)
+ {
+ glong t_malloc = local_data[i + PROFILE_TABLE (1, 0, success)];
+ glong t_realloc = local_data[i + PROFILE_TABLE (1, 1, success)];
+ glong t_free = local_data[i + PROFILE_TABLE (0, 0, success)];
+ glong t_refree = local_data[i + PROFILE_TABLE (0, 1, success)];
+
+ if (!t_malloc && !t_realloc && !t_free && !t_refree)
+ continue;
+ else if (need_header)
+ {
+ need_header = FALSE;
+ g_print (" blocks of | allocated | freed | allocated | freed | n_bytes \n");
+ g_print (" n_bytes | n_times by | n_times by | n_times by | n_times by | remaining \n");
+ g_print (" | malloc() | free() | realloc() | realloc() | \n");
+ g_print ("===========|============|============|============|============|===========\n");
+ }
+ if (i < MEM_PROFILE_TABLE_SIZE)
+ g_print ("%10u | %10ld | %10ld | %10ld | %10ld |%+11ld\n",
+ i, t_malloc, t_free, t_realloc, t_refree,
+ (t_malloc - t_free + t_realloc - t_refree) * i);
+ else if (i >= MEM_PROFILE_TABLE_SIZE)
+ g_print (" >%6u | %10ld | %10ld | %10ld | %10ld | ***\n",
+ i, t_malloc, t_free, t_realloc, t_refree);
+ }
+ if (need_header)
+ g_print (" --- none ---\n");
+}
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- size -= SIZEOF_LONG;
+void
+g_mem_profile (void)
+{
+ guint local_data[(MEM_PROFILE_TABLE_SIZE + 1) * 8 * sizeof (profile_data[0])];
+ gulong local_allocs;
+ gulong local_zinit;
+ gulong local_frees;
+ gulong local_mc_allocs;
+ gulong local_mc_frees;
+
+ g_mutex_lock (g_profile_mutex);
+
+ local_allocs = profile_allocs;
+ local_zinit = profile_zinit;
+ local_frees = profile_frees;
+ local_mc_allocs = profile_mc_allocs;
+ local_mc_frees = profile_mc_frees;
+
+ if (!profile_data)
+ {
+ g_mutex_unlock (g_profile_mutex);
+ return;
+ }
- t = p;
- p = ((guchar*) p + SIZEOF_LONG);
- *t = size;
+ memcpy (local_data, profile_data,
+ (MEM_PROFILE_TABLE_SIZE + 1) * 8 * sizeof (profile_data[0]));
+
+ g_mutex_unlock (g_profile_mutex);
+
+ g_print ("GLib Memory statistics (successful operations):\n");
+ profile_print_locked (local_data, TRUE);
+ g_print ("GLib Memory statistics (failing operations):\n");
+ profile_print_locked (local_data, FALSE);
+ g_print ("Total bytes: allocated=%lu, zero-initialized=%lu (%.2f%%), freed=%lu (%.2f%%), remaining=%lu\n",
+ local_allocs,
+ local_zinit,
+ ((gdouble) local_zinit) / local_allocs * 100.0,
+ 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);
+}
-#ifdef ENABLE_MEM_PROFILE
- if (size <= 4095)
- allocations[size-1] += 1;
- else
- allocations[4095] += 1;
- allocated_mem += size;
-#endif /* ENABLE_MEM_PROFILE */
-#endif /* ENABLE_MEM_PROFILE */
+static gpointer
+profiler_try_malloc (gsize n_bytes)
+{
+ gulong *p;
+#ifdef G_ENABLE_DEBUG
+ if (g_trap_malloc_size == n_bytes)
+ G_BREAKPOINT ();
+#endif /* G_ENABLE_DEBUG */
+ p = standard_malloc (sizeof (gulong) * 2 + n_bytes);
+
+ if (p)
+ {
+ p[0] = 0; /* free count */
+ p[1] = n_bytes; /* length */
+ profiler_log (PROFILER_ALLOC, n_bytes, TRUE);
+ p += 2;
+ }
+ else
+ profiler_log (PROFILER_ALLOC, n_bytes, FALSE);
+
return p;
}
-gpointer
-g_realloc (gpointer mem,
- gulong size)
+static gpointer
+profiler_malloc (gsize n_bytes)
{
- gpointer p;
-
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- gulong *t;
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
-
-
- if (size == 0)
- return NULL;
+ gpointer mem = profiler_try_malloc (n_bytes);
+ if (!mem)
+ g_mem_profile ();
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- size += SIZEOF_LONG;
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
+ return mem;
+}
-#ifdef ENABLE_MEM_CHECK
- size += SIZEOF_LONG;
-#endif /* ENABLE_MEM_CHECK */
+static gpointer
+profiler_calloc (gsize n_blocks,
+ gsize n_block_bytes)
+{
+ gsize l = n_blocks * n_block_bytes;
+ gulong *p;
+#ifdef G_ENABLE_DEBUG
+ if (g_trap_malloc_size == l)
+ G_BREAKPOINT ();
+#endif /* G_ENABLE_DEBUG */
+
+ p = standard_calloc (1, sizeof (gulong) * 2 + l);
- if (!mem)
- p = (gpointer) malloc (size);
+ if (p)
+ {
+ p[0] = 0; /* free count */
+ p[1] = l; /* length */
+ profiler_log (PROFILER_ALLOC | PROFILER_ZINIT, l, TRUE);
+ p += 2;
+ }
else
{
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- t = (gulong*) ((guchar*) mem - SIZEOF_LONG);
-#ifdef ENABLE_MEM_PROFILE
- freed_mem += *t;
-#endif /* ENABLE_MEM_PROFILE */
- mem = t;
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
-
-#ifdef ENABLE_MEM_CHECK
- t = (gulong*) ((guchar*) mem - SIZEOF_LONG);
- if (*t >= 1)
- g_warning ("trying to realloc freed memory\n");
- mem = t;
-#endif /* ENABLE_MEM_CHECK */
-
- p = (gpointer) realloc (mem, size);
+ profiler_log (PROFILER_ALLOC | PROFILER_ZINIT, l, FALSE);
+ g_mem_profile ();
}
- if (!p)
- g_error ("could not reallocate %ld bytes", size);
+ return p;
+}
+static void
+profiler_free (gpointer mem)
+{
+ gulong *p = mem;
-#ifdef ENABLE_MEM_CHECK
- size -= SIZEOF_LONG;
+ p -= 2;
+ if (p[0]) /* free count */
+ {
+ g_warning ("free(%p): memory has been freed %lu times already", p + 2, p[0]);
+ profiler_log (PROFILER_FREE,
+ p[1], /* length */
+ FALSE);
+ }
+ else
+ {
+#ifdef G_ENABLE_DEBUG
+ if (g_trap_free_size == p[1])
+ G_BREAKPOINT ();
+#endif /* G_ENABLE_DEBUG */
+
+ profiler_log (PROFILER_FREE,
+ p[1], /* length */
+ TRUE);
+ memset (p + 2, 0xaa, p[1]);
+
+ /* for all those that miss standard_free (p); in this place, yes,
+ * we do leak all memory when profiling, and that is intentional
+ * to catch double frees. patch submissions are futile.
+ */
+ }
+ p[0] += 1;
+}
- t = p;
- p = ((guchar*) p + SIZEOF_LONG);
- *t = 0;
-#endif /* ENABLE_MEM_CHECK */
+static gpointer
+profiler_try_realloc (gpointer mem,
+ gsize n_bytes)
+{
+ gulong *p = mem;
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- size -= SIZEOF_LONG;
+ p -= 2;
- t = p;
- p = ((guchar*) p + SIZEOF_LONG);
- *t = size;
+#ifdef G_ENABLE_DEBUG
+ if (g_trap_realloc_size == n_bytes)
+ G_BREAKPOINT ();
+#endif /* G_ENABLE_DEBUG */
+
+ if (mem && p[0]) /* free count */
+ {
+ g_warning ("realloc(%p, %u): memory has been freed %lu times already", p + 2, n_bytes, p[0]);
+ profiler_log (PROFILER_ALLOC | PROFILER_RELOC, n_bytes, FALSE);
-#ifdef ENABLE_MEM_PROFILE
- if (size <= 4095)
- allocations[size-1] += 1;
+ return NULL;
+ }
else
- allocations[4095] += 1;
- allocated_mem += size;
-#endif /* ENABLE_MEM_PROFILE */
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
+ {
+ p = standard_realloc (mem ? p : NULL, sizeof (gulong) * 2 + n_bytes);
+ if (p)
+ {
+ if (mem)
+ profiler_log (PROFILER_FREE | PROFILER_RELOC, p[1], TRUE);
+ p[0] = 0;
+ p[1] = n_bytes;
+ profiler_log (PROFILER_ALLOC | PROFILER_RELOC, p[1], TRUE);
+ p += 2;
+ }
+ else
+ profiler_log (PROFILER_ALLOC | PROFILER_RELOC, n_bytes, FALSE);
- return p;
+ return p;
+ }
}
-void
-g_free (gpointer mem)
+static gpointer
+profiler_realloc (gpointer mem,
+ gsize n_bytes)
{
- if (mem)
- {
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- gulong *t;
- gulong size;
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
-
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- t = (gulong*) ((guchar*) mem - SIZEOF_LONG);
- size = *t;
-#ifdef ENABLE_MEM_PROFILE
- freed_mem += size;
-#endif /* ENABLE_MEM_PROFILE */
- mem = t;
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
-
-#ifdef ENABLE_MEM_CHECK
- t = (gulong*) ((guchar*) mem - SIZEOF_LONG);
- if (*t >= 1)
- g_warning ("freeing previously freed memory\n");
- *t += 1;
- mem = t;
-
- memset ((guchar*) mem + 8, 0, size);
-#else /* ENABLE_MEM_CHECK */
- free (mem);
-#endif /* ENABLE_MEM_CHECK */
- }
+ mem = profiler_try_realloc (mem, n_bytes);
+
+ if (!mem)
+ g_mem_profile ();
+
+ return mem;
}
-#endif /* ! USE_DMALLOC */
+static GMemVTable profiler_table = {
+ profiler_malloc,
+ profiler_realloc,
+ profiler_free,
+ profiler_calloc,
+ profiler_try_malloc,
+ profiler_try_realloc,
+};
+GMemVTable *glib_mem_profiler_table = &profiler_table;
+#endif /* !G_DISABLE_CHECKS */
-void
-g_mem_profile (void)
-{
-#ifdef ENABLE_MEM_PROFILE
- gint i;
- for (i = 0; i < 4095; i++)
- if (allocations[i] > 0)
- g_print ("%lu allocations of %d bytes\n", allocations[i], i + 1);
+/* --- MemChunks --- */
+typedef struct _GFreeAtom GFreeAtom;
+typedef struct _GMemArea GMemArea;
+typedef struct _GRealMemChunk GRealMemChunk;
- if (allocations[4095] > 0)
- g_print ("%lu allocations of greater than 4095 bytes\n", allocations[4095]);
- g_print ("%lu bytes allocated\n", allocated_mem);
- g_print ("%lu bytes freed\n", freed_mem);
- g_print ("%lu bytes in use\n", allocated_mem - freed_mem);
-#endif /* ENABLE_MEM_PROFILE */
-}
+struct _GFreeAtom
+{
+ GFreeAtom *next;
+};
-void
-g_mem_check (gpointer mem)
+struct _GMemArea
{
-#ifdef ENABLE_MEM_CHECK
- gulong *t;
+ 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).
+ */
+};
- t = (gulong*) ((guchar*) mem - SIZEOF_LONG - SIZEOF_LONG);
+struct _GRealMemChunk
+{
+ const 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 */
+};
- if (*t >= 1)
- g_warning ("mem: 0x%08x has been freed: %lu\n", (gulong) mem, *t);
-#endif /* ENABLE_MEM_CHECK */
-}
+
+#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)
+g_mem_chunk_new (const 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->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);
- if (mem_chunk->atom_size % MEM_ALIGN)
- mem_chunk->atom_size += MEM_ALIGN - (mem_chunk->atom_size % MEM_ALIGN);
-
- mem_chunk->area_size = area_size;
- if (mem_chunk->area_size > MAX_MEM_AREA)
- mem_chunk->area_size = MAX_MEM_AREA;
- while (mem_chunk->area_size < mem_chunk->atom_size)
- mem_chunk->area_size *= 2;
-
- rarea_size = mem_chunk->area_size + sizeof (GMemArea) - MEM_AREA_SIZE;
- rarea_size = g_mem_chunk_compute_size (rarea_size);
+ 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);
- /*
- mem_chunk->area_size -= (sizeof (GMemArea) - MEM_AREA_SIZE);
- if (mem_chunk->area_size < mem_chunk->atom_size)
- {
- mem_chunk->area_size = (mem_chunk->area_size + sizeof (GMemArea) - MEM_AREA_SIZE) * 2;
- mem_chunk->area_size -= (sizeof (GMemArea) - MEM_AREA_SIZE);
- }
-
- if (mem_chunk->area_size % mem_chunk->atom_size)
- mem_chunk->area_size += mem_chunk->atom_size - (mem_chunk->area_size % mem_chunk->atom_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);
}
GRealMemChunk *rmem_chunk;
GMemArea *mem_areas;
GMemArea *temp_area;
+
+ g_return_if_fail (mem_chunk != NULL);
- g_assert (mem_chunk != NULL);
+ ENTER_MEM_CHUNK_ROUTINE ();
rmem_chunk = (GRealMemChunk*) mem_chunk;
-
+
mem_areas = rmem_chunk->mem_areas;
while (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_tree_destroy (rmem_chunk->mem_tree);
g_free (rmem_chunk);
+
+ LEAVE_MEM_CHUNK_ROUTINE ();
}
gpointer
GMemArea *temp_area;
gpointer mem;
- g_assert (mem_chunk != NULL);
+ 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.
*/
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,
- (GSearchFunc) g_mem_chunk_area_search,
+ (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
{
/* 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);
/* 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.
}
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->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;
}
GRealMemChunk *rmem_chunk;
GMemArea *temp_area;
GFreeAtom *free_atom;
+
+ g_return_if_fail (mem_chunk != NULL);
+ g_return_if_fail (mem != NULL);
- g_assert (mem_chunk != NULL);
- g_assert (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
*/
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,
- (GSearchFunc) g_mem_chunk_area_search,
+ (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 */
GFreeAtom *prev_free_atom;
GFreeAtom *temp_free_atom;
gpointer mem;
-
- g_assert (mem_chunk != NULL);
+
+ 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,
- (GSearchFunc) g_mem_chunk_area_search,
+ (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.
*/
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)
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);
}
}
}
+ LEAVE_MEM_CHUNK_ROUTINE ();
}
void
GRealMemChunk *rmem_chunk;
GMemArea *mem_areas;
GMemArea *temp_area;
-
- g_assert (mem_chunk != NULL);
+
+ 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
GRealMemChunk *rmem_chunk;
GMemArea *mem_areas;
gulong mem;
-
- g_assert (mem_chunk != NULL);
-
+
+ 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_print ("%s: %ld bytes using %d mem areas\n", rmem_chunk->name, mem, rmem_chunk->num_mem_areas);
+ 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
{
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_print ("%d mem chunks\n", count);
-
+ 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);
}
}
-
static gulong
-g_mem_chunk_compute_size (gulong size)
+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))
+
+ if (size - lower < upper - size && lower >= min_size)
return lower;
- return upper;
+ else
+ return upper;
}
static gint
g_mem_chunk_area_compare (GMemArea *a,
GMemArea *b)
{
- return (a->mem - b->mem);
+ if (a->mem > b->mem)
+ return 1;
+ else if (a->mem < b->mem)
+ return -1;
+ return 0;
}
static gint
}
return -1;
}
+
+#else /* DISABLE_MEM_POOLS */
+
+typedef struct {
+ guint alloc_size; /* the size of an atom */
+} GMinimalMemChunk;
+
+GMemChunk*
+g_mem_chunk_new (const gchar *name,
+ gint atom_size,
+ gulong area_size,
+ gint type)
+{
+ GMinimalMemChunk *mem_chunk;
+
+ g_return_val_if_fail (atom_size > 0, NULL);
+
+ mem_chunk = g_new (GMinimalMemChunk, 1);
+ mem_chunk->alloc_size = atom_size;
+
+ return ((GMemChunk*) mem_chunk);
+}
+
+void
+g_mem_chunk_destroy (GMemChunk *mem_chunk)
+{
+ g_return_if_fail (mem_chunk != NULL);
+
+ g_free (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);
+}
+
+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);
+}
+
+void
+g_mem_chunk_free (GMemChunk *mem_chunk,
+ gpointer mem)
+{
+ g_return_if_fail (mem_chunk != NULL);
+
+ g_free (mem);
+}
+
+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) {}
+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;
+}
+
+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);
+
+ g_free (allocator);
+}
+
+void
+g_mem_init (void)
+{
+#ifndef DISABLE_MEM_POOLS
+ mem_chunks_lock = g_mutex_new ();
+#endif
+#ifndef G_DISABLE_CHECKS
+ mem_chunk_recursion = g_private_new (NULL);
+ g_profile_mutex = g_mutex_new ();
+#endif
+}
projects / platform / upstream / glib.git / blobdiff