* 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 1997-1999. See the AUTHORS
+ * 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/.
#include <string.h>
#include "glib.h"
-/* #define ENABLE_MEM_PROFILE */
-/* #define ENABLE_MEM_PROFILE_EXCLUDES_MEM_CHUNKS */
-/* #define ENABLE_MEM_CHECK */
-#define MEM_PROFILE_TABLE_SIZE 8192
-/*
- * This library can check for some attempts to do illegal things to
- * memory (ENABLE_MEM_CHECK), and can do profiling
- * (ENABLE_MEM_PROFILE). Both features are implemented by storing
- * words before the start of the memory chunk.
- *
- * The first, at offset -2*SIZEOF_LONG, is used only if
- * ENABLE_MEM_CHECK is set, and stores 0 after the memory has been
- * allocated and 1 when it has been freed. The second, at offset
- * -SIZEOF_LONG, is used if either flag is set and stores the size of
- * the block.
- *
- * The MEM_CHECK flag is checked when memory is realloc'd and free'd,
- * and it can be explicitly checked before using a block by calling
- * g_mem_check().
+/* 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.
*/
-#if defined(ENABLE_MEM_PROFILE) && defined(ENABLE_MEM_PROFILE_EXCLUDES_MEM_CHUNKS)
-#define ENTER_MEM_CHUNK_ROUTINE() \
- g_private_set (allocating_for_mem_chunk, \
- g_private_get (allocating_for_mem_chunk) + 1)
-#define LEAVE_MEM_CHUNK_ROUTINE() \
- g_private_set (allocating_for_mem_chunk, \
- g_private_get (allocating_for_mem_chunk) - 1)
-#else
-#define ENTER_MEM_CHUNK_ROUTINE()
-#define LEAVE_MEM_CHUNK_ROUTINE()
-#endif
-
+#define MEM_PROFILE_TABLE_SIZE 4096
#define MEM_AREA_SIZE 4L
-#if SIZEOF_VOID_P > SIZEOF_LONG
-#define MEM_ALIGN SIZEOF_VOID_P
-#else
-#define MEM_ALIGN SIZEOF_LONG
-#endif
+#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)
+{
+ 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)
+{
+ return malloc (n_bytes);
+}
+# ifdef REALLOC_0_WORKS
+static gpointer
+standard_realloc (gpointer mem,
+ gsize n_bytes)
+{
+ 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,
+};
+
+
+/* --- functions --- */
+gpointer
+g_malloc (gulong n_bytes)
+{
+ if (n_bytes)
+ {
+ gpointer mem;
+
+ mem = glib_mem_vtable.malloc (n_bytes);
+ if (mem)
+ return mem;
+
+ g_error ("%s: failed to allocate %lu bytes", G_STRLOC, n_bytes);
+ }
+
+ return NULL;
+}
+
+gpointer
+g_malloc0 (gulong n_bytes)
+{
+ if (n_bytes)
+ {
+ gpointer mem;
+
+ mem = glib_mem_vtable.calloc (1, n_bytes);
+ if (mem)
+ return mem;
+
+ g_error ("%s: failed to allocate %lu bytes", G_STRLOC, n_bytes);
+ }
+
+ 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;
+
+ g_error ("%s: failed to allocate %lu bytes", G_STRLOC, n_bytes);
+ }
+
+ if (mem)
+ glib_mem_vtable.free (mem);
+
+ return NULL;
+}
+
+void
+g_free (gpointer mem)
+{
+ if (mem)
+ glib_mem_vtable.free (mem);
+}
+
+gpointer
+g_try_malloc (gulong n_bytes)
+{
+ if (n_bytes)
+ return glib_mem_vtable.try_malloc (n_bytes);
+ else
+ return NULL;
+}
+
+gpointer
+g_try_realloc (gpointer mem,
+ gulong n_bytes)
+{
+ if (n_bytes)
+ return glib_mem_vtable.try_realloc (mem, n_bytes);
+
+ if (mem)
+ glib_mem_vtable.free (mem);
+
+ 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 (mem)
+ memset (mem, 0, l);
+
+ return mem;
+}
+
+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.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");
+}
+
+
+/* --- 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);
+}
+
+static void
+profile_print_locked (guint *local_data,
+ gboolean success)
+{
+ gboolean need_header = TRUE;
+ guint i;
+
+ 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");
+}
+
+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;
+ }
+ 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);
+}
+
+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;
+}
+
+static gpointer
+profiler_malloc (gsize n_bytes)
+{
+ gpointer mem = profiler_try_malloc (n_bytes);
+
+ if (!mem)
+ g_mem_profile ();
+
+ return mem;
+}
+
+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 (p)
+ {
+ p[0] = 0; /* free count */
+ p[1] = l; /* length */
+ profiler_log (PROFILER_ALLOC | PROFILER_ZINIT, l, TRUE);
+ p += 2;
+ }
+ else
+ {
+ profiler_log (PROFILER_ALLOC | PROFILER_ZINIT, l, FALSE);
+ g_mem_profile ();
+ }
+
+ return p;
+}
+
+static void
+profiler_free (gpointer mem)
+{
+ gulong *p = mem;
+
+ 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;
+}
+
+static gpointer
+profiler_try_realloc (gpointer mem,
+ gsize n_bytes)
+{
+ gulong *p = mem;
+
+ p -= 2;
+
+#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);
+
+ return NULL;
+ }
+ else
+ {
+ 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;
+ }
+}
+
+static gpointer
+profiler_realloc (gpointer mem,
+ gsize n_bytes)
+{
+ mem = profiler_try_realloc (mem, n_bytes);
+
+ if (!mem)
+ g_mem_profile ();
+
+ return mem;
+}
+
+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 */
+
+
+/* --- MemChunks --- */
typedef struct _GFreeAtom GFreeAtom;
typedef struct _GMemArea GMemArea;
typedef struct _GRealMemChunk GRealMemChunk;
struct _GRealMemChunk
{
- gchar *name; /* name of this MemChunk...used for debugging output */
+ 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 */
};
+#ifndef DISABLE_MEM_POOLS
static gulong g_mem_chunk_compute_size (gulong size,
- gulong min_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;
+ * g_malloc, the same holds true for StaticPrivate
+ */
+static GMutex *mem_chunks_lock = NULL;
static GRealMemChunk *mem_chunks = NULL;
-#ifdef ENABLE_MEM_PROFILE
-static GMutex* mem_profile_lock;
-static gulong allocations[MEM_PROFILE_TABLE_SIZE] = { 0 };
-static gulong allocated_mem = 0;
-static gulong freed_mem = 0;
-static GPrivate* allocating_for_mem_chunk = NULL;
-#define IS_IN_MEM_CHUNK_ROUTINE() \
- GPOINTER_TO_UINT (g_private_get (allocating_for_mem_chunk))
-#endif /* ENABLE_MEM_PROFILE */
-
-
-#ifndef USE_DMALLOC
-
-gpointer
-g_malloc (gulong size)
-{
- 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;
-
-
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- size += SIZEOF_LONG;
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
-
-#ifdef ENABLE_MEM_CHECK
- size += SIZEOF_LONG;
-#endif /* ENABLE_MEM_CHECK */
-
-
- p = (gpointer) malloc (size);
- if (!p)
- g_error ("could not allocate %ld bytes", size);
-
-
-#ifdef ENABLE_MEM_CHECK
- size -= SIZEOF_LONG;
-
- t = p;
- p = ((guchar*) p + SIZEOF_LONG);
- *t = 0;
-#endif /* ENABLE_MEM_CHECK */
-
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- size -= SIZEOF_LONG;
-
- t = p;
- p = ((guchar*) p + SIZEOF_LONG);
- *t = size;
-
-#ifdef ENABLE_MEM_PROFILE
- g_mutex_lock (mem_profile_lock);
-# ifdef ENABLE_MEM_PROFILE_EXCLUDES_MEM_CHUNKS
- if(!IS_IN_MEM_CHUNK_ROUTINE()) {
-# endif
- if (size <= MEM_PROFILE_TABLE_SIZE - 1)
- allocations[size-1] += 1;
- else
- allocations[MEM_PROFILE_TABLE_SIZE - 1] += 1;
- allocated_mem += size;
-# ifdef ENABLE_MEM_PROFILE_EXCLUDES_MEM_CHUNKS
- }
-# endif
- g_mutex_unlock (mem_profile_lock);
-#endif /* ENABLE_MEM_PROFILE */
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
-
-
- return p;
-}
-
-gpointer
-g_malloc0 (gulong size)
-{
- 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;
-
-
-#if defined (ENABLE_MEM_PROFILE) || defined (ENABLE_MEM_CHECK)
- size += SIZEOF_LONG;
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
-
-#ifdef ENABLE_MEM_CHECK
- size += SIZEOF_LONG;
-#endif /* ENABLE_MEM_CHECK */
-
-
- p = (gpointer) calloc (size, 1);
- if (!p)
- g_error ("could not allocate %ld bytes", size);
-
-
-#ifdef ENABLE_MEM_CHECK
- size -= SIZEOF_LONG;
-
- t = p;
- p = ((guchar*) p + SIZEOF_LONG);
- *t = 0;
-#endif /* ENABLE_MEM_CHECK */
-
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- size -= SIZEOF_LONG;
-
- t = p;
- p = ((guchar*) p + SIZEOF_LONG);
- *t = size;
-
-# ifdef ENABLE_MEM_PROFILE
- g_mutex_lock (mem_profile_lock);
-# ifdef ENABLE_MEM_PROFILE_EXCLUDES_MEM_CHUNKS
- if(!IS_IN_MEM_CHUNK_ROUTINE()) {
-# endif
- if (size <= (MEM_PROFILE_TABLE_SIZE - 1))
- allocations[size-1] += 1;
- else
- allocations[MEM_PROFILE_TABLE_SIZE - 1] += 1;
- allocated_mem += size;
-# ifdef ENABLE_MEM_PROFILE_EXCLUDES_MEM_CHUNKS
- }
-# endif
- g_mutex_unlock (mem_profile_lock);
-# endif /* ENABLE_MEM_PROFILE */
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
-
-
- return p;
-}
-
-gpointer
-g_realloc (gpointer mem,
- gulong size)
-{
- gpointer p;
-
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- gulong *t;
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
-
-
- if (size == 0)
- {
- g_free (mem);
-
- return NULL;
- }
-
-
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- size += SIZEOF_LONG;
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
-
-#ifdef ENABLE_MEM_CHECK
- size += SIZEOF_LONG;
-#endif /* ENABLE_MEM_CHECK */
-
-
- if (!mem)
- {
-#ifdef REALLOC_0_WORKS
- p = (gpointer) realloc (NULL, size);
-#else /* !REALLOC_0_WORKS */
- p = (gpointer) malloc (size);
-#endif /* !REALLOC_0_WORKS */
- }
- else
- {
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- t = (gulong*) ((guchar*) mem - SIZEOF_LONG);
-#ifdef ENABLE_MEM_PROFILE
- g_mutex_lock (mem_profile_lock);
- freed_mem += *t;
- g_mutex_unlock (mem_profile_lock);
-#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);
- }
-
- if (!p)
- g_error ("could not reallocate %lu bytes", (gulong) size);
-
-
-#ifdef ENABLE_MEM_CHECK
- size -= SIZEOF_LONG;
-
- t = p;
- p = ((guchar*) p + SIZEOF_LONG);
- *t = 0;
-#endif /* ENABLE_MEM_CHECK */
-
-#if defined(ENABLE_MEM_PROFILE) || defined(ENABLE_MEM_CHECK)
- size -= SIZEOF_LONG;
-
- t = p;
- p = ((guchar*) p + SIZEOF_LONG);
- *t = size;
-
-#ifdef ENABLE_MEM_PROFILE
- g_mutex_lock (mem_profile_lock);
-#ifdef ENABLE_MEM_PROFILE_EXCLUDES_MEM_CHUNKS
- if(!IS_IN_MEM_CHUNK_ROUTINE()) {
-#endif
- if (size <= (MEM_PROFILE_TABLE_SIZE - 1))
- allocations[size-1] += 1;
- else
- allocations[MEM_PROFILE_TABLE_SIZE - 1] += 1;
- allocated_mem += size;
-#ifdef ENABLE_MEM_PROFILE_EXCLUDES_MEM_CHUNKS
- }
-#endif
- g_mutex_unlock (mem_profile_lock);
-#endif /* ENABLE_MEM_PROFILE */
-#endif /* ENABLE_MEM_PROFILE || ENABLE_MEM_CHECK */
-
-
- return p;
-}
-
-void
-g_free (gpointer mem)
-{
- 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
- g_mutex_lock (mem_profile_lock);
- freed_mem += size;
- g_mutex_unlock (mem_profile_lock);
-#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 */
- }
-}
-
-#endif /* ! USE_DMALLOC */
-
-
-void
-g_mem_profile (void)
-{
-#ifdef ENABLE_MEM_PROFILE
- gint i;
- gulong local_allocations[MEM_PROFILE_TABLE_SIZE];
- gulong local_allocated_mem;
- gulong local_freed_mem;
-
- g_mutex_lock (mem_profile_lock);
- for (i = 0; i < MEM_PROFILE_TABLE_SIZE; i++)
- local_allocations[i] = allocations[i];
- local_allocated_mem = allocated_mem;
- local_freed_mem = freed_mem;
- g_mutex_unlock (mem_profile_lock);
-
- for (i = 0; i < (MEM_PROFILE_TABLE_SIZE - 1); i++)
- if (local_allocations[i] > 0)
- g_log (g_log_domain_glib, G_LOG_LEVEL_INFO,
- "%lu allocations of %d bytes", local_allocations[i], i + 1);
-
- if (local_allocations[MEM_PROFILE_TABLE_SIZE - 1] > 0)
- g_log (g_log_domain_glib, G_LOG_LEVEL_INFO,
- "%lu allocations of greater than %d bytes",
- local_allocations[MEM_PROFILE_TABLE_SIZE - 1], MEM_PROFILE_TABLE_SIZE - 1);
- g_log (g_log_domain_glib, G_LOG_LEVEL_INFO, "%lu bytes allocated", local_allocated_mem);
- g_log (g_log_domain_glib, G_LOG_LEVEL_INFO, "%lu bytes freed", local_freed_mem);
- g_log (g_log_domain_glib, G_LOG_LEVEL_INFO, "%lu bytes in use", local_allocated_mem - local_freed_mem);
-#endif /* ENABLE_MEM_PROFILE */
-}
-
-void
-g_mem_check (gpointer mem)
-{
-#ifdef ENABLE_MEM_CHECK
- gulong *t;
-
- t = (gulong*) ((guchar*) mem - SIZEOF_LONG - SIZEOF_LONG);
-
- if (*t >= 1)
- g_warning ("mem: 0x%08x has been freed %lu times\n", (gulong) mem, *t);
-#endif /* ENABLE_MEM_CHECK */
-}
-
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();
+ ENTER_MEM_CHUNK_ROUTINE ();
area_size = (area_size + atom_size - 1) / atom_size;
area_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 % MEM_ALIGN)
- mem_chunk->atom_size += MEM_ALIGN - (mem_chunk->atom_size % MEM_ALIGN);
+ 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_chunks = mem_chunk;
g_mutex_unlock (mem_chunks_lock);
- LEAVE_MEM_CHUNK_ROUTINE();
+ LEAVE_MEM_CHUNK_ROUTINE ();
return ((GMemChunk*) mem_chunk);
}
g_return_if_fail (mem_chunk != NULL);
- ENTER_MEM_CHUNK_ROUTINE();
+ ENTER_MEM_CHUNK_ROUTINE ();
rmem_chunk = (GRealMemChunk*) mem_chunk;
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();
+ LEAVE_MEM_CHUNK_ROUTINE ();
}
gpointer
GMemArea *temp_area;
gpointer mem;
- ENTER_MEM_CHUNK_ROUTINE();
+ ENTER_MEM_CHUNK_ROUTINE ();
g_return_val_if_fail (mem_chunk != NULL, NULL);
/* 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.
}
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;
outa_here:
- LEAVE_MEM_CHUNK_ROUTINE();
+ LEAVE_MEM_CHUNK_ROUTINE ();
return mem;
}
g_return_if_fail (mem_chunk != NULL);
g_return_if_fail (mem != NULL);
- ENTER_MEM_CHUNK_ROUTINE();
+ 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)
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;
}
}
- LEAVE_MEM_CHUNK_ROUTINE();
+ LEAVE_MEM_CHUNK_ROUTINE ();
}
/* This doesn't free the free_area if there is one */
g_return_if_fail (mem_chunk != NULL);
+ ENTER_MEM_CHUNK_ROUTINE ();
+
rmem_chunk = (GRealMemChunk*) mem_chunk;
if (rmem_chunk->type == G_ALLOC_AND_FREE)
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
}
}
}
+ LEAVE_MEM_CHUNK_ROUTINE ();
}
void
g_return_if_fail (mem_chunk != NULL);
+ ENTER_MEM_CHUNK_ROUTINE ();
+
rmem_chunk = (GRealMemChunk*) mem_chunk;
mem_areas = rmem_chunk->mem_areas;
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
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);
}
}
-
static gulong
g_mem_chunk_compute_size (gulong size,
gulong min_size)
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 */
void
g_mem_init (void)
{
- mem_chunks_lock = g_mutex_new();
-#ifdef ENABLE_MEM_PROFILE
- mem_profile_lock = g_mutex_new();
- allocating_for_mem_chunk = g_private_new(NULL);
+#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