--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/glib/libglib/src/gslice.c Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,1264 @@
+/* GLIB sliced memory - fast concurrent memory chunk allocator
+ * Copyright (C) 2005 Tim Janik
+ * Portions copyright (c) 2006 Nokia Corporation. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * 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.
+ */
+/* MT safe */
+
+#include "config.h"
+
+#if defined HAVE_POSIX_MEMALIGN && defined POSIX_MEMALIGN_WITH_COMPLIANT_ALLOCS
+# define HAVE_COMPLIANT_POSIX_MEMALIGN 1
+#endif
+
+#ifdef HAVE_COMPLIANT_POSIX_MEMALIGN
+#define _XOPEN_SOURCE 600 /* posix_memalign() */
+#endif
+#include <stdlib.h> /* posix_memalign() */
+#include <string.h>
+#include <errno.h>
+#include "gmem.h" /* gslice.h */
+#include "gthreadinit.h"
+#include "galias.h"
+#include "glib.h"
+#ifdef HAVE_UNISTD_H
+#include <unistd.h> /* sysconf() */
+#endif
+#ifdef G_OS_WIN32
+#include <windows.h>
+#include <process.h>
+#endif
+
+#ifdef __SYMBIAN32__
+#include <glib_wsd.h>
+#endif /* __SYMBIAN32__ */
+
+#if EMULATOR
+#define g_thread_functions_for_glib_use (*_g_thread_functions_for_glib_use())
+#define g_thread_use_default_impl (*_g_thread_use_default_impl())
+#define g_mem_gc_friendly (*_g_mem_gc_friendly())
+#endif /* EMULATOR */
+
+
+
+/* the GSlice allocator is split up into 4 layers, roughly modelled after the slab
+ * allocator and magazine extensions as outlined in:
+ * + [Bonwick94] Jeff Bonwick, The slab allocator: An object-caching kernel
+ * memory allocator. USENIX 1994, http://citeseer.ist.psu.edu/bonwick94slab.html
+ * + [Bonwick01] Bonwick and Jonathan Adams, Magazines and vmem: Extending the
+ * slab allocator to many cpu's and arbitrary resources.
+ * USENIX 2001, http://citeseer.ist.psu.edu/bonwick01magazines.html
+ * the layers are:
+ * - the thread magazines. for each (aligned) chunk size, a magazine (a list)
+ * of recently freed and soon to be allocated chunks is maintained per thread.
+ * this way, most alloc/free requests can be quickly satisfied from per-thread
+ * free lists which only require one g_private_get() call to retrive the
+ * thread handle.
+ * - the magazine cache. allocating and freeing chunks to/from threads only
+ * occours at magazine sizes from a global depot of magazines. the depot
+ * maintaines a 15 second working set of allocated magazines, so full
+ * magazines are not allocated and released too often.
+ * the chunk size dependent magazine sizes automatically adapt (within limits,
+ * see [3]) to lock contention to properly scale performance across a variety
+ * of SMP systems.
+ * - the slab allocator. this allocator allocates slabs (blocks of memory) close
+ * to the system page size or multiples thereof which have to be page aligned.
+ * the blocks are divided into smaller chunks which are used to satisfy
+ * allocations from the upper layers. the space provided by the reminder of
+ * the chunk size division is used for cache colorization (random distribution
+ * of chunk addresses) to improve processor cache utilization. multiple slabs
+ * with the same chunk size are kept in a partially sorted ring to allow O(1)
+ * freeing and allocation of chunks (as long as the allocation of an entirely
+ * new slab can be avoided).
+ * - the page allocator. on most modern systems, posix_memalign(3) or
+ * memalign(3) should be available, so this is used to allocate blocks with
+ * system page size based alignments and sizes or multiples thereof.
+ * if no memalign variant is provided, valloc() is used instead and
+ * block sizes are limited to the system page size (no multiples thereof).
+ * as a fallback, on system without even valloc(), a malloc(3)-based page
+ * allocator with alloc-only behaviour is used.
+ *
+ * NOTES:
+ * [1] some systems memalign(3) implementations may rely on boundary tagging for
+ * the handed out memory chunks. to avoid excessive page-wise fragmentation,
+ * we reserve 2 * sizeof (void*) per block size for the systems memalign(3),
+ * specified in NATIVE_MALLOC_PADDING.
+ * [2] using the slab allocator alone already provides for a fast and efficient
+ * allocator, it doesn't properly scale beyond single-threaded uses though.
+ * also, the slab allocator implements eager free(3)-ing, i.e. does not
+ * provide any form of caching or working set maintenance. so if used alone,
+ * it's vulnerable to trashing for sequences of balanced (alloc, free) pairs
+ * at certain thresholds.
+ * [3] magazine sizes are bound by an implementation specific minimum size and
+ * a chunk size specific maximum to limit magazine storage sizes to roughly
+ * 16KB.
+ * [4] allocating ca. 8 chunks per block/page keeps a good balance between
+ * external and internal fragmentation (<= 12.5%). [Bonwick94]
+ */
+
+/* --- macros and constants --- */
+#define LARGEALIGNMENT (256)
+#define P2ALIGNMENT (2 * sizeof (gsize)) /* fits 2 pointers (assumed to be 2 * GLIB_SIZEOF_SIZE_T below) */
+#define ALIGN(size, base) ((base) * (gsize) (((size) + (base) - 1) / (base)))
+#define NATIVE_MALLOC_PADDING P2ALIGNMENT /* per-page padding left for native malloc(3) see [1] */
+#define SLAB_INFO_SIZE P2ALIGN (sizeof (SlabInfo) + NATIVE_MALLOC_PADDING)
+#define MAX_MAGAZINE_SIZE (256) /* see [3] and allocator_get_magazine_threshold() for this */
+#define MIN_MAGAZINE_SIZE (4)
+#define MAX_STAMP_COUNTER (7) /* distributes the load of gettimeofday() */
+#define MAX_SLAB_CHUNK_SIZE(al) (((al)->max_page_size - SLAB_INFO_SIZE) / 8) /* we want at last 8 chunks per page, see [4] */
+#define MAX_SLAB_INDEX(al) (SLAB_INDEX (al, MAX_SLAB_CHUNK_SIZE (al)) + 1)
+#define SLAB_INDEX(al, asize) ((asize) / P2ALIGNMENT - 1) /* asize must be P2ALIGNMENT aligned */
+#define SLAB_CHUNK_SIZE(al, ix) (((ix) + 1) * P2ALIGNMENT)
+#define SLAB_BPAGE_SIZE(al,csz) (8 * (csz) + SLAB_INFO_SIZE)
+
+/* optimized version of ALIGN (size, P2ALIGNMENT) */
+#if GLIB_SIZEOF_SIZE_T * 2 == 8 /* P2ALIGNMENT */
+#define P2ALIGN(size) (((size) + 0x7) & ~(gsize) 0x7)
+#elif GLIB_SIZEOF_SIZE_T * 2 == 16 /* P2ALIGNMENT */
+#define P2ALIGN(size) (((size) + 0xf) & ~(gsize) 0xf)
+#else
+#define P2ALIGN(size) ALIGN (size, P2ALIGNMENT)
+#endif
+
+/* special helpers to avoid gmessage.c dependency */
+static void mem_error (const char *format, ...) G_GNUC_PRINTF (1,2);
+#define mem_assert(cond) do { if (G_LIKELY (cond)) ; else mem_error ("assertion failed: %s", #cond); } while (0)
+
+/* --- structures --- */
+#if !(EMULATOR)
+typedef struct _ChunkLink ChunkLink;
+typedef struct _SlabInfo SlabInfo;
+#endif /* !(EMULATOR) */
+
+typedef struct _CachedMagazine CachedMagazine;
+
+#if !(EMULATOR)
+struct _ChunkLink {
+ ChunkLink *next;
+ ChunkLink *data;
+};
+struct _SlabInfo {
+ ChunkLink *chunks;
+ guint n_allocated;
+ SlabInfo *next, *prev;
+};
+#endif /* !(EMULATOR) */
+
+typedef struct {
+ ChunkLink *chunks;
+ gsize count; /* approximative chunks list length */
+} Magazine;
+typedef struct {
+ Magazine *magazine1; /* array of MAX_SLAB_INDEX (allocator) */
+ Magazine *magazine2; /* array of MAX_SLAB_INDEX (allocator) */
+} ThreadMemory;
+
+#if !(EMULATOR)
+typedef struct {
+ gboolean always_malloc;
+ gboolean bypass_magazines;
+ gsize working_set_msecs;
+ guint color_increment;
+} SliceConfig;
+typedef struct {
+ /* const after initialization */
+ gsize min_page_size, max_page_size;
+ SliceConfig config;
+ gsize max_slab_chunk_size_for_magazine_cache;
+ /* magazine cache */
+ GMutex *magazine_mutex;
+ ChunkLink **magazines; /* array of MAX_SLAB_INDEX (allocator) */
+ guint *contention_counters; /* array of MAX_SLAB_INDEX (allocator) */
+ gint mutex_counter;
+ guint stamp_counter;
+ guint last_stamp;
+ /* slab allocator */
+ GMutex *slab_mutex;
+ SlabInfo **slab_stack; /* array of MAX_SLAB_INDEX (allocator) */
+ guint color_accu;
+} Allocator;
+#endif /* !(EMULATOR)
+
+
+/* --- prototypes --- */
+static gpointer slab_allocator_alloc_chunk (gsize chunk_size);
+static void slab_allocator_free_chunk (gsize chunk_size,
+ gpointer mem);
+static void private_thread_memory_cleanup (gpointer data);
+static gpointer allocator_memalign (gsize alignment,
+ gsize memsize);
+static void allocator_memfree (gsize memsize,
+ gpointer mem);
+static inline void magazine_cache_update_stamp (void);
+#if EMULATOR
+static inline gsize allocator_get_magazine_threshold (Allocator *allocator1,
+ guint ix);
+#else
+static inline gsize allocator_get_magazine_threshold (Allocator *allocator,
+ guint ix);
+#endif /* EMULATOR */
+
+/* --- variables --- */
+#if EMULATOR
+
+PLS(private_thread_memory,gslice,GPrivate *)
+PLS(sys_page_size,gslice,gsize)
+PLS_ARRAY(allocator,gslice,Allocator)
+PLS(slice_config,gslice,SliceConfig)
+
+#define private_thread_memory (*FUNCTION_NAME(private_thread_memory ,gslice)())
+#define sys_page_size (*FUNCTION_NAME(sys_page_size ,gslice)())
+#define allocator (FUNCTION_NAME(allocator ,gslice)())
+#define slice_config (*FUNCTION_NAME(slice_config ,gslice)())
+
+#else
+
+static GPrivate *private_thread_memory = NULL;
+static gsize sys_page_size = 0;
+static Allocator allocator[1] = { { 0, }, };
+static SliceConfig slice_config = {
+ FALSE, /* always_malloc */
+ FALSE, /* bypass_magazines */
+ 15 * 1000, /* working_set_msecs */
+ 1, /* color increment, alt: 0x7fffffff */
+};
+
+#endif /* EMULATOR */
+
+/* --- auxillary funcitons --- */
+void
+g_slice_set_config (GSliceConfig ckey,
+ gint64 value)
+{
+ g_return_if_fail (sys_page_size == 0);
+ switch (ckey)
+ {
+ case G_SLICE_CONFIG_ALWAYS_MALLOC:
+ slice_config.always_malloc = value != 0;
+ break;
+ case G_SLICE_CONFIG_BYPASS_MAGAZINES:
+ slice_config.bypass_magazines = value != 0;
+ break;
+ case G_SLICE_CONFIG_WORKING_SET_MSECS:
+ slice_config.working_set_msecs = value;
+ break;
+ case G_SLICE_CONFIG_COLOR_INCREMENT:
+ slice_config.color_increment = value;
+ default: ;
+ }
+}
+
+gint64
+g_slice_get_config (GSliceConfig ckey)
+{
+ switch (ckey)
+ {
+ case G_SLICE_CONFIG_ALWAYS_MALLOC:
+ return slice_config.always_malloc;
+ case G_SLICE_CONFIG_BYPASS_MAGAZINES:
+ return slice_config.bypass_magazines;
+ case G_SLICE_CONFIG_WORKING_SET_MSECS:
+ return slice_config.working_set_msecs;
+ case G_SLICE_CONFIG_CHUNK_SIZES:
+ return MAX_SLAB_INDEX (allocator);
+ case G_SLICE_CONFIG_COLOR_INCREMENT:
+ return slice_config.color_increment;
+ default:
+ return 0;
+ }
+}
+
+gint64*
+g_slice_get_config_state (GSliceConfig ckey,
+ gint64 address,
+ guint *n_values)
+{
+ guint i = 0;
+ g_return_val_if_fail (n_values != NULL, NULL);
+ *n_values = 0;
+ switch (ckey)
+ {
+ gint64 array[64];
+ case G_SLICE_CONFIG_CONTENTION_COUNTER:
+ array[i++] = SLAB_CHUNK_SIZE (allocator, address);
+ array[i++] = allocator->contention_counters[address];
+ array[i++] = allocator_get_magazine_threshold (allocator, address);
+ *n_values = i;
+ return g_memdup (array, sizeof (array[0]) * *n_values);
+ default:
+ return NULL;
+ }
+}
+
+static void
+slice_config_init (SliceConfig *config)
+{
+ /* don't use g_malloc/g_message here */
+ gchar buffer[1024];
+ const gchar *val = _g_getenv_nomalloc ("G_SLICE", buffer);
+ static const GDebugKey keys[] = {
+ { "always-malloc", 1 << 0 },
+ };
+ gint flags = !val ? 0 : g_parse_debug_string (val, keys, G_N_ELEMENTS (keys));
+ *config = slice_config;
+ if (flags & (1 << 0)) /* always-malloc */
+ {
+ config->always_malloc = TRUE;
+ }
+}
+
+static void
+g_slice_init_nomessage (void)
+{
+ /* we may not use g_error() or friends here */
+ mem_assert (sys_page_size == 0);
+ mem_assert (MIN_MAGAZINE_SIZE >= 4);
+
+#ifdef G_OS_WIN32
+ {
+ SYSTEM_INFO system_info;
+ GetSystemInfo (&system_info);
+ sys_page_size = system_info.dwPageSize;
+ }
+#else
+ sys_page_size = sysconf (_SC_PAGESIZE); /* = sysconf (_SC_PAGE_SIZE); = getpagesize(); */
+#endif
+ mem_assert (sys_page_size >= 2 * LARGEALIGNMENT);
+ mem_assert ((sys_page_size & (sys_page_size - 1)) == 0);
+ slice_config_init (&allocator->config);
+
+ // If the allocator is configured in such a way that the glib always uses
+ // system malloc, then we dont need to allocate the book keeping array.
+ // Thats why we return after that check and when it is successful.
+#ifdef __SYMBIAN32__
+ if(allocator->config.always_malloc)
+ return;
+#endif /* __SYMBIAN32__ */
+ allocator->min_page_size = sys_page_size;
+#if HAVE_COMPLIANT_POSIX_MEMALIGN || HAVE_MEMALIGN
+ /* allow allocation of pages up to 8KB (with 8KB alignment).
+ * this is useful because many medium to large sized structures
+ * fit less than 8 times (see [4]) into 4KB pages.
+ * we allow very small page sizes here, to reduce wastage in
+ * threads if only small allocations are required (this does
+ * bear the risk of incresing allocation times and fragmentation
+ * though).
+ */
+ allocator->min_page_size = MAX (allocator->min_page_size, 4096);
+ allocator->max_page_size = MAX (allocator->min_page_size, 8192);
+ allocator->min_page_size = MIN (allocator->min_page_size, 128);
+#else
+ /* we can only align to system page size */
+ allocator->max_page_size = sys_page_size;
+#endif
+ allocator->magazine_mutex = NULL; /* _g_slice_thread_init_nomessage() */
+ allocator->magazines = g_new0 (ChunkLink*, MAX_SLAB_INDEX (allocator));
+ allocator->contention_counters = g_new0 (guint, MAX_SLAB_INDEX (allocator));
+ allocator->mutex_counter = 0;
+ allocator->stamp_counter = MAX_STAMP_COUNTER; /* force initial update */
+ allocator->last_stamp = 0;
+ allocator->slab_mutex = NULL; /* _g_slice_thread_init_nomessage() */
+ allocator->slab_stack = g_new0 (SlabInfo*, MAX_SLAB_INDEX (allocator));
+ allocator->color_accu = 0;
+ magazine_cache_update_stamp();
+ /* values cached for performance reasons */
+ allocator->max_slab_chunk_size_for_magazine_cache = MAX_SLAB_CHUNK_SIZE (allocator);
+ if (allocator->config.always_malloc || allocator->config.bypass_magazines)
+ allocator->max_slab_chunk_size_for_magazine_cache = 0; /* non-optimized cases */
+ /* at this point, g_mem_gc_friendly() should be initialized, this
+ * should have been accomplished by the above g_malloc/g_new calls
+ */
+}
+
+static inline guint
+allocator_categorize (gsize aligned_chunk_size)
+{
+ /* speed up the likely path */
+ if (G_LIKELY (aligned_chunk_size && aligned_chunk_size <= allocator->max_slab_chunk_size_for_magazine_cache))
+ return 1; /* use magazine cache */
+
+ /* the above will fail (max_slab_chunk_size_for_magazine_cache == 0) if the
+ * allocator is still uninitialized, or if we are not configured to use the
+ * magazine cache.
+ */
+ if (!sys_page_size)
+ g_slice_init_nomessage ();
+
+ // If the allocator is configured in such a way that the glib always uses
+ // system malloc, then we dont need to allocate the book keeping array.
+ // Thats why we return 0 after that check and when it is successful.
+#ifdef __SYMBIAN32__
+ if(allocator->config.always_malloc)
+ return 0;
+#endif /* __SYMBIAN32__*/
+ if (!allocator->config.always_malloc &&
+ aligned_chunk_size &&
+ aligned_chunk_size <= MAX_SLAB_CHUNK_SIZE (allocator))
+ {
+ if (allocator->config.bypass_magazines)
+ return 2; /* use slab allocator, see [2] */
+ return 1; /* use magazine cache */
+ }
+ return 0; /* use malloc() */
+}
+
+void
+_g_slice_thread_init_nomessage (void)
+{
+ /* we may not use g_error() or friends here */
+ if (!sys_page_size)
+ g_slice_init_nomessage();
+ private_thread_memory = g_private_new (private_thread_memory_cleanup);
+ allocator->magazine_mutex = g_mutex_new();
+ allocator->slab_mutex = g_mutex_new();
+}
+
+static inline void
+g_mutex_lock_a (GMutex *mutex,
+ guint *contention_counter)
+{
+ gboolean contention = FALSE;
+ if (!g_mutex_trylock (mutex))
+ {
+ g_mutex_lock (mutex);
+ contention = TRUE;
+ }
+ if (contention)
+ {
+ allocator->mutex_counter++;
+ if (allocator->mutex_counter >= 1) /* quickly adapt to contention */
+ {
+ allocator->mutex_counter = 0;
+ *contention_counter = MIN (*contention_counter + 1, MAX_MAGAZINE_SIZE);
+ }
+ }
+ else /* !contention */
+ {
+ allocator->mutex_counter--;
+ if (allocator->mutex_counter < -11) /* moderately recover magazine sizes */
+ {
+ allocator->mutex_counter = 0;
+ *contention_counter = MAX (*contention_counter, 1) - 1;
+ }
+ }
+}
+
+static inline ThreadMemory*
+thread_memory_from_self (void)
+{
+ ThreadMemory *tmem = g_private_get (private_thread_memory);
+ if (G_UNLIKELY (!tmem))
+ {
+ const guint n_magazines = MAX_SLAB_INDEX (allocator);
+ tmem = g_malloc0 (sizeof (ThreadMemory) + sizeof (Magazine) * 2 * n_magazines);
+ tmem->magazine1 = (Magazine*) (tmem + 1);
+ tmem->magazine2 = &tmem->magazine1[n_magazines];
+ g_private_set (private_thread_memory, tmem);
+ }
+ return tmem;
+}
+
+static inline ChunkLink*
+magazine_chain_pop_head (ChunkLink **magazine_chunks)
+{
+ /* magazine chains are linked via ChunkLink->next.
+ * each ChunkLink->data of the toplevel chain may point to a subchain,
+ * linked via ChunkLink->next. ChunkLink->data of the subchains just
+ * contains uninitialized junk.
+ */
+ ChunkLink *chunk = (*magazine_chunks)->data;
+ if (G_UNLIKELY (chunk))
+ {
+ /* allocating from freed list */
+ (*magazine_chunks)->data = chunk->next;
+ }
+ else
+ {
+ chunk = *magazine_chunks;
+ *magazine_chunks = chunk->next;
+ }
+ return chunk;
+}
+
+#if 0 /* useful for debugging */
+static guint
+magazine_count (ChunkLink *head)
+{
+ guint count = 0;
+ if (!head)
+ return 0;
+ while (head)
+ {
+ ChunkLink *child = head->data;
+ count += 1;
+ for (child = head->data; child; child = child->next)
+ count += 1;
+ head = head->next;
+ }
+ return count;
+}
+#endif
+
+static inline gsize
+allocator_get_magazine_threshold (Allocator *allocator1,
+ guint ix)
+{
+ /* the magazine size calculated here has a lower bound of MIN_MAGAZINE_SIZE,
+ * which is required by the implementation. also, for moderately sized chunks
+ * (say >= 64 bytes), magazine sizes shouldn't be much smaller then the number
+ * of chunks available per page/2 to avoid excessive traffic in the magazine
+ * cache for small to medium sized structures.
+ * the upper bound of the magazine size is effectively provided by
+ * MAX_MAGAZINE_SIZE. for larger chunks, this number is scaled down so that
+ * the content of a single magazine doesn't exceed ca. 16KB.
+ */
+ gsize chunk_size = SLAB_CHUNK_SIZE (allocator1, ix);
+ guint threshold = MAX (MIN_MAGAZINE_SIZE, allocator1->max_page_size / MAX (5 * chunk_size, 5 * 32));
+ guint contention_counter = allocator1->contention_counters[ix];
+ if (G_UNLIKELY (contention_counter)) /* single CPU bias */
+ {
+ /* adapt contention counter thresholds to chunk sizes */
+ contention_counter = contention_counter * 64 / chunk_size;
+ threshold = MAX (threshold, contention_counter);
+ }
+ return threshold;
+}
+
+/* --- magazine cache --- */
+static inline void
+magazine_cache_update_stamp (void)
+{
+ if (allocator->stamp_counter >= MAX_STAMP_COUNTER)
+ {
+ GTimeVal tv;
+ g_get_current_time (&tv);
+ allocator->last_stamp = tv.tv_sec * 1000 + tv.tv_usec / 1000; /* milli seconds */
+ allocator->stamp_counter = 0;
+ }
+ else
+ allocator->stamp_counter++;
+}
+
+static inline ChunkLink*
+magazine_chain_prepare_fields (ChunkLink *magazine_chunks)
+{
+ ChunkLink *chunk1;
+ ChunkLink *chunk2;
+ ChunkLink *chunk3;
+ ChunkLink *chunk4;
+ /* checked upon initialization: mem_assert (MIN_MAGAZINE_SIZE >= 4); */
+ /* ensure a magazine with at least 4 unused data pointers */
+ chunk1 = magazine_chain_pop_head (&magazine_chunks);
+ chunk2 = magazine_chain_pop_head (&magazine_chunks);
+ chunk3 = magazine_chain_pop_head (&magazine_chunks);
+ chunk4 = magazine_chain_pop_head (&magazine_chunks);
+ chunk4->next = magazine_chunks;
+ chunk3->next = chunk4;
+ chunk2->next = chunk3;
+ chunk1->next = chunk2;
+ return chunk1;
+}
+
+/* access the first 3 fields of a specially prepared magazine chain */
+#define magazine_chain_prev(mc) ((mc)->data)
+#define magazine_chain_stamp(mc) ((mc)->next->data)
+#define magazine_chain_uint_stamp(mc) GPOINTER_TO_UINT ((mc)->next->data)
+#define magazine_chain_next(mc) ((mc)->next->next->data)
+#define magazine_chain_count(mc) ((mc)->next->next->next->data)
+
+#ifdef __SYMBIAN32__
+
+static void
+magazine_cache_trim (Allocator *allocator1,
+ guint ix,
+ guint stamp)
+
+#else
+static void
+magazine_cache_trim (Allocator *allocator,
+ guint ix,
+ guint stamp)
+#endif /* __SYMBIAN32__ */
+{
+ /* g_mutex_lock (allocator->mutex); done by caller */
+ /* trim magazine cache from tail */
+ ChunkLink *current = magazine_chain_prev (allocator1->magazines[ix]);
+ ChunkLink *trash = NULL;
+ while (ABS (stamp - magazine_chain_uint_stamp (current)) >= allocator1->config.working_set_msecs)
+ {
+ /* unlink */
+ ChunkLink *prev = magazine_chain_prev (current);
+ ChunkLink *next = magazine_chain_next (current);
+ magazine_chain_next (prev) = next;
+ magazine_chain_prev (next) = prev;
+ /* clear special fields, put on trash stack */
+ magazine_chain_next (current) = NULL;
+ magazine_chain_count (current) = NULL;
+ magazine_chain_stamp (current) = NULL;
+ magazine_chain_prev (current) = trash;
+ trash = current;
+ /* fixup list head if required */
+ if (current == allocator1->magazines[ix])
+ {
+ allocator1->magazines[ix] = NULL;
+ break;
+ }
+ current = prev;
+ }
+ g_mutex_unlock (allocator1->magazine_mutex);
+ /* free trash */
+ if (trash)
+ {
+ const gsize chunk_size = SLAB_CHUNK_SIZE (allocator1, ix);
+ g_mutex_lock (allocator1->slab_mutex);
+ while (trash)
+ {
+ current = trash;
+ trash = magazine_chain_prev (current);
+ magazine_chain_prev (current) = NULL; /* clear special field */
+ while (current)
+ {
+ ChunkLink *chunk = magazine_chain_pop_head (¤t);
+ slab_allocator_free_chunk (chunk_size, chunk);
+ }
+ }
+ g_mutex_unlock (allocator1->slab_mutex);
+ }
+}
+
+static void
+magazine_cache_push_magazine (guint ix,
+ ChunkLink *magazine_chunks,
+ gsize count) /* must be >= MIN_MAGAZINE_SIZE */
+{
+ ChunkLink *current = magazine_chain_prepare_fields (magazine_chunks);
+ ChunkLink *next, *prev;
+ g_mutex_lock (allocator->magazine_mutex);
+ /* add magazine at head */
+ next = allocator->magazines[ix];
+ if (next)
+ prev = magazine_chain_prev (next);
+ else
+ next = prev = current;
+ magazine_chain_next (prev) = current;
+ magazine_chain_prev (next) = current;
+ magazine_chain_prev (current) = prev;
+ magazine_chain_next (current) = next;
+ magazine_chain_count (current) = (gpointer) count;
+ /* stamp magazine */
+ magazine_chain_stamp (current) = GUINT_TO_POINTER (allocator->last_stamp);
+ magazine_cache_update_stamp();
+ allocator->magazines[ix] = current;
+ /* free old magazines beyond a certain threshold */
+ magazine_cache_trim (allocator, ix, allocator->last_stamp);
+ /* g_mutex_unlock (allocator->mutex); was done by magazine_cache_trim() */
+}
+
+static ChunkLink*
+magazine_cache_pop_magazine (guint ix,
+ gsize *countp)
+{
+ g_mutex_lock_a (allocator->magazine_mutex, &allocator->contention_counters[ix]);
+ if (!allocator->magazines[ix])
+ {
+ guint magazine_threshold = allocator_get_magazine_threshold (allocator, ix);
+ gsize i, chunk_size = SLAB_CHUNK_SIZE (allocator, ix);
+ ChunkLink *chunk, *head;
+ g_mutex_unlock (allocator->magazine_mutex);
+ g_mutex_lock (allocator->slab_mutex);
+ head = slab_allocator_alloc_chunk (chunk_size);
+ head->data = NULL;
+ chunk = head;
+ for (i = 1; i < magazine_threshold; i++)
+ {
+ chunk->next = slab_allocator_alloc_chunk (chunk_size);
+ chunk = chunk->next;
+ chunk->data = NULL;
+ }
+ chunk->next = NULL;
+ g_mutex_unlock (allocator->slab_mutex);
+ *countp = i;
+ return head;
+ }
+ else
+ {
+ ChunkLink *current = allocator->magazines[ix];
+ ChunkLink *prev = magazine_chain_prev (current);
+ ChunkLink *next = magazine_chain_next (current);
+ /* unlink */
+ magazine_chain_next (prev) = next;
+ magazine_chain_prev (next) = prev;
+ allocator->magazines[ix] = next == current ? NULL : next;
+ g_mutex_unlock (allocator->magazine_mutex);
+ /* clear special fields and hand out */
+ *countp = (gsize) magazine_chain_count (current);
+ magazine_chain_prev (current) = NULL;
+ magazine_chain_next (current) = NULL;
+ magazine_chain_count (current) = NULL;
+ magazine_chain_stamp (current) = NULL;
+ return current;
+ }
+}
+
+/* --- thread magazines --- */
+static void
+private_thread_memory_cleanup (gpointer data)
+{
+ ThreadMemory *tmem = data;
+ const guint n_magazines = MAX_SLAB_INDEX (allocator);
+ guint ix;
+ for (ix = 0; ix < n_magazines; ix++)
+ {
+ Magazine *mags[2];
+ guint j;
+ mags[0] = &tmem->magazine1[ix];
+ mags[1] = &tmem->magazine2[ix];
+ for (j = 0; j < 2; j++)
+ {
+ Magazine *mag = mags[j];
+ if (mag->count >= MIN_MAGAZINE_SIZE)
+ magazine_cache_push_magazine (ix, mag->chunks, mag->count);
+ else
+ {
+ const gsize chunk_size = SLAB_CHUNK_SIZE (allocator, ix);
+ g_mutex_lock (allocator->slab_mutex);
+ while (mag->chunks)
+ {
+ ChunkLink *chunk = magazine_chain_pop_head (&mag->chunks);
+ slab_allocator_free_chunk (chunk_size, chunk);
+ }
+ g_mutex_unlock (allocator->slab_mutex);
+ }
+ }
+ }
+ g_free (tmem);
+}
+
+static void
+thread_memory_magazine1_reload (ThreadMemory *tmem,
+ guint ix)
+{
+ Magazine *mag = &tmem->magazine1[ix];
+ mem_assert (mag->chunks == NULL); /* ensure that we may reset mag->count */
+ mag->count = 0;
+ mag->chunks = magazine_cache_pop_magazine (ix, &mag->count);
+}
+
+static void
+thread_memory_magazine2_unload (ThreadMemory *tmem,
+ guint ix)
+{
+ Magazine *mag = &tmem->magazine2[ix];
+ magazine_cache_push_magazine (ix, mag->chunks, mag->count);
+ mag->chunks = NULL;
+ mag->count = 0;
+}
+
+static inline void
+thread_memory_swap_magazines (ThreadMemory *tmem,
+ guint ix)
+{
+ Magazine xmag = tmem->magazine1[ix];
+ tmem->magazine1[ix] = tmem->magazine2[ix];
+ tmem->magazine2[ix] = xmag;
+}
+
+static inline gboolean
+thread_memory_magazine1_is_empty (ThreadMemory *tmem,
+ guint ix)
+{
+ return tmem->magazine1[ix].chunks == NULL;
+}
+
+static inline gboolean
+thread_memory_magazine2_is_full (ThreadMemory *tmem,
+ guint ix)
+{
+ return tmem->magazine2[ix].count >= allocator_get_magazine_threshold (allocator, ix);
+}
+
+static inline gpointer
+thread_memory_magazine1_alloc (ThreadMemory *tmem,
+ guint ix)
+{
+ Magazine *mag = &tmem->magazine1[ix];
+ ChunkLink *chunk = magazine_chain_pop_head (&mag->chunks);
+ if (G_LIKELY (mag->count > 0))
+ mag->count--;
+ return chunk;
+}
+
+static inline void
+thread_memory_magazine2_free (ThreadMemory *tmem,
+ guint ix,
+ gpointer mem)
+{
+ Magazine *mag = &tmem->magazine2[ix];
+ ChunkLink *chunk = mem;
+ chunk->data = NULL;
+ chunk->next = mag->chunks;
+ mag->chunks = chunk;
+ mag->count++;
+}
+
+/* --- API functions --- */
+EXPORT_C gpointer
+g_slice_alloc (gsize mem_size)
+{
+ gsize chunk_size;
+ gpointer mem;
+ guint acat;
+ chunk_size = P2ALIGN (mem_size);
+ acat = allocator_categorize (chunk_size);
+ if (G_LIKELY (acat == 1)) /* allocate through magazine layer */
+ {
+ ThreadMemory *tmem = thread_memory_from_self();
+ guint ix = SLAB_INDEX (allocator, chunk_size);
+ if (G_UNLIKELY (thread_memory_magazine1_is_empty (tmem, ix)))
+ {
+ thread_memory_swap_magazines (tmem, ix);
+ if (G_UNLIKELY (thread_memory_magazine1_is_empty (tmem, ix)))
+ thread_memory_magazine1_reload (tmem, ix);
+ }
+ mem = thread_memory_magazine1_alloc (tmem, ix);
+ }
+ else if (acat == 2) /* allocate through slab allocator */
+ {
+ g_mutex_lock (allocator->slab_mutex);
+ mem = slab_allocator_alloc_chunk (chunk_size);
+ g_mutex_unlock (allocator->slab_mutex);
+ }
+ else /* delegate to system malloc */
+ mem = g_malloc (mem_size);
+
+ return mem;
+}
+
+EXPORT_C gpointer
+g_slice_alloc0 (gsize mem_size)
+{
+ gpointer mem = g_slice_alloc (mem_size);
+ if (mem)
+ memset (mem, 0, mem_size);
+ return mem;
+}
+
+EXPORT_C void
+g_slice_free1 (gsize mem_size,
+ gpointer mem_block)
+{
+ gsize chunk_size = P2ALIGN (mem_size);
+ guint acat = allocator_categorize (chunk_size);
+ if (G_UNLIKELY (!mem_block))
+ return;
+ if (G_LIKELY (acat == 1)) /* allocate through magazine layer */
+ {
+ ThreadMemory *tmem = thread_memory_from_self();
+ guint ix = SLAB_INDEX (allocator, chunk_size);
+ if (G_UNLIKELY (thread_memory_magazine2_is_full (tmem, ix)))
+ {
+ thread_memory_swap_magazines (tmem, ix);
+ if (G_UNLIKELY (thread_memory_magazine2_is_full (tmem, ix)))
+ thread_memory_magazine2_unload (tmem, ix);
+ }
+ if (G_UNLIKELY (g_mem_gc_friendly))
+ memset (mem_block, 0, chunk_size);
+ thread_memory_magazine2_free (tmem, ix, mem_block);
+ }
+ else if (acat == 2) /* allocate through slab allocator */
+ {
+ if (G_UNLIKELY (g_mem_gc_friendly))
+ memset (mem_block, 0, chunk_size);
+ g_mutex_lock (allocator->slab_mutex);
+ slab_allocator_free_chunk (chunk_size, mem_block);
+ g_mutex_unlock (allocator->slab_mutex);
+ }
+ else /* delegate to system malloc */
+ {
+ if (G_UNLIKELY (g_mem_gc_friendly))
+ memset (mem_block, 0, mem_size);
+ g_free (mem_block);
+ }
+}
+
+EXPORT_C void
+g_slice_free_chain_with_offset (gsize mem_size,
+ gpointer mem_chain,
+ gsize next_offset)
+{
+ gpointer slice = mem_chain;
+ /* while the thread magazines and the magazine cache are implemented so that
+ * they can easily be extended to allow for free lists containing more free
+ * lists for the first level nodes, which would allow O(1) freeing in this
+ * function, the benefit of such an extension is questionable, because:
+ * - the magazine size counts will become mere lower bounds which confuses
+ * the code adapting to lock contention;
+ * - freeing a single node to the thread magazines is very fast, so this
+ * O(list_length) operation is multiplied by a fairly small factor;
+ * - memory usage histograms on larger applications seem to indicate that
+ * the amount of released multi node lists is negligible in comparison
+ * to single node releases.
+ * - the major performance bottle neck, namely g_private_get() or
+ * g_mutex_lock()/g_mutex_unlock() has already been moved out of the
+ * inner loop for freeing chained slices.
+ */
+ gsize chunk_size = P2ALIGN (mem_size);
+ guint acat = allocator_categorize (chunk_size);
+ if (G_LIKELY (acat == 1)) /* allocate through magazine layer */
+ {
+ ThreadMemory *tmem = thread_memory_from_self();
+ guint ix = SLAB_INDEX (allocator, chunk_size);
+ while (slice)
+ {
+ guint8 *current = slice;
+ slice = *(gpointer*) (current + next_offset);
+ if (G_UNLIKELY (thread_memory_magazine2_is_full (tmem, ix)))
+ {
+ thread_memory_swap_magazines (tmem, ix);
+ if (G_UNLIKELY (thread_memory_magazine2_is_full (tmem, ix)))
+ thread_memory_magazine2_unload (tmem, ix);
+ }
+ if (G_UNLIKELY (g_mem_gc_friendly))
+ memset (current, 0, chunk_size);
+ thread_memory_magazine2_free (tmem, ix, current);
+ }
+ }
+ else if (acat == 2) /* allocate through slab allocator */
+ {
+ g_mutex_lock (allocator->slab_mutex);
+ while (slice)
+ {
+ guint8 *current = slice;
+ slice = *(gpointer*) (current + next_offset);
+ if (G_UNLIKELY (g_mem_gc_friendly))
+ memset (current, 0, chunk_size);
+ slab_allocator_free_chunk (chunk_size, current);
+ }
+ g_mutex_unlock (allocator->slab_mutex);
+ }
+ else /* delegate to system malloc */
+ while (slice)
+ {
+ guint8 *current = slice;
+ slice = *(gpointer*) (current + next_offset);
+ if (G_UNLIKELY (g_mem_gc_friendly))
+ memset (current, 0, mem_size);
+ g_free (current);
+ }
+}
+
+/* --- single page allocator --- */
+#ifdef __SYMBIAN32__
+
+static void
+allocator_slab_stack_push (Allocator *allocator1,
+ guint ix,
+ SlabInfo *sinfo)
+
+#else
+
+static void
+allocator_slab_stack_push (Allocator *allocator,
+ guint ix,
+ SlabInfo *sinfo)
+
+#endif /* __SYMBIAN32__ */
+{
+ /* insert slab at slab ring head */
+ if (!allocator1->slab_stack[ix])
+ {
+ sinfo->next = sinfo;
+ sinfo->prev = sinfo;
+ }
+ else
+ {
+ SlabInfo *next = allocator1->slab_stack[ix], *prev = next->prev;
+ next->prev = sinfo;
+ prev->next = sinfo;
+ sinfo->next = next;
+ sinfo->prev = prev;
+ }
+ allocator1->slab_stack[ix] = sinfo;
+}
+
+#ifdef __SYMBIAN32__
+
+static gsize
+allocator_aligned_page_size (Allocator *allocator1,
+ gsize n_bytes)
+
+#else
+static gsize
+allocator_aligned_page_size (Allocator *allocator,
+ gsize n_bytes)
+#endif /* __SYMBIAN32__ */
+{
+ gsize val = 1 << g_bit_storage (n_bytes - 1);
+ val = MAX (val, allocator1->min_page_size);
+ return val;
+}
+
+#ifdef __SYMBIAN32__
+
+static void
+allocator_add_slab (Allocator *allocator1,
+ guint ix,
+ gsize chunk_size)
+
+#else
+static void
+allocator_add_slab (Allocator *allocator,
+ guint ix,
+ gsize chunk_size)
+#endif /* __SYMBIAN32__ */
+{
+ ChunkLink *chunk;
+ SlabInfo *sinfo;
+ gsize addr, padding, n_chunks, color = 0;
+ gsize page_size = allocator_aligned_page_size (allocator1, SLAB_BPAGE_SIZE (allocator1, chunk_size));
+ /* allocate 1 page for the chunks and the slab */
+ gpointer aligned_memory = allocator_memalign (page_size, page_size - NATIVE_MALLOC_PADDING);
+ guint8 *mem = aligned_memory;
+ guint i;
+ if (!mem)
+ {
+ const gchar *syserr = "unknown error";
+#if HAVE_STRERROR
+ syserr = strerror (errno);
+#endif
+ mem_error ("failed to allocate %u bytes (alignment: %u): %s\n",
+ (guint) (page_size - NATIVE_MALLOC_PADDING), (guint) page_size, syserr);
+ }
+ /* mask page adress */
+ addr = ((gsize) mem / page_size) * page_size;
+ /* assert alignment */
+ mem_assert (aligned_memory == (gpointer) addr);
+ /* basic slab info setup */
+ sinfo = (SlabInfo*) (mem + page_size - SLAB_INFO_SIZE);
+ sinfo->n_allocated = 0;
+ sinfo->chunks = NULL;
+ /* figure cache colorization */
+ n_chunks = ((guint8*) sinfo - mem) / chunk_size;
+ padding = ((guint8*) sinfo - mem) - n_chunks * chunk_size;
+ if (padding)
+ {
+ color = (allocator1->color_accu * P2ALIGNMENT) % padding;
+ allocator1->color_accu += allocator1->config.color_increment;
+ }
+ /* add chunks to free list */
+ chunk = (ChunkLink*) (mem + color);
+ sinfo->chunks = chunk;
+ for (i = 0; i < n_chunks - 1; i++)
+ {
+ chunk->next = (ChunkLink*) ((guint8*) chunk + chunk_size);
+ chunk = chunk->next;
+ }
+ chunk->next = NULL; /* last chunk */
+ /* add slab to slab ring */
+ allocator_slab_stack_push (allocator1, ix, sinfo);
+}
+
+static gpointer
+slab_allocator_alloc_chunk (gsize chunk_size)
+{
+ ChunkLink *chunk;
+ guint ix = SLAB_INDEX (allocator, chunk_size);
+ /* ensure non-empty slab */
+ if (!allocator->slab_stack[ix] || !allocator->slab_stack[ix]->chunks)
+ allocator_add_slab (allocator, ix, chunk_size);
+ /* allocate chunk */
+ chunk = allocator->slab_stack[ix]->chunks;
+ allocator->slab_stack[ix]->chunks = chunk->next;
+ allocator->slab_stack[ix]->n_allocated++;
+ /* rotate empty slabs */
+ if (!allocator->slab_stack[ix]->chunks)
+ allocator->slab_stack[ix] = allocator->slab_stack[ix]->next;
+ return chunk;
+}
+
+static void
+slab_allocator_free_chunk (gsize chunk_size,
+ gpointer mem)
+{
+ ChunkLink *chunk;
+ gboolean was_empty;
+#ifdef MOBILE_PORT
+ guint16 offset;
+#endif//MOBILE_PORT
+ guint ix = SLAB_INDEX (allocator, chunk_size);
+ gsize page_size = allocator_aligned_page_size (allocator, SLAB_BPAGE_SIZE (allocator, chunk_size));
+ gsize addr = ((gsize) mem / page_size) * page_size;
+ /* mask page adress */
+ guint8 *page = (guint8*) addr;
+ SlabInfo *sinfo = (SlabInfo*) (page + page_size - SLAB_INFO_SIZE);
+ /* assert valid chunk count */
+ mem_assert (sinfo->n_allocated > 0);
+#ifdef MOBILE_PORT
+ offset = *((guint16*)(page + page_size - NATIVE_MALLOC_PADDING));
+#endif//MOBILE_PORT
+ /* add chunk to free list */
+ was_empty = sinfo->chunks == NULL;
+ chunk = (ChunkLink*) mem;
+ chunk->next = sinfo->chunks;
+ sinfo->chunks = chunk;
+ sinfo->n_allocated--;
+ /* keep slab ring partially sorted, empty slabs at end */
+ if (was_empty)
+ {
+ /* unlink slab */
+ SlabInfo *next = sinfo->next, *prev = sinfo->prev;
+ next->prev = prev;
+ prev->next = next;
+ if (allocator->slab_stack[ix] == sinfo)
+ allocator->slab_stack[ix] = next == sinfo ? NULL : next;
+ /* insert slab at head */
+ allocator_slab_stack_push (allocator, ix, sinfo);
+ }
+ /* eagerly free complete unused slabs */
+ if (!sinfo->n_allocated)
+ {
+ /* unlink slab */
+ SlabInfo *next = sinfo->next, *prev = sinfo->prev;
+ next->prev = prev;
+ prev->next = next;
+ if (allocator->slab_stack[ix] == sinfo)
+ allocator->slab_stack[ix] = next == sinfo ? NULL : next;
+ /* free slab */
+#ifndef MOBILE_PORT
+ allocator_memfree (page_size, page);
+#else//MOBILE_PORT
+ allocator_memfree (page_size, page - offset);
+#endif//MOBILE_PORT
+ }
+}
+
+/* --- memalign implementation --- */
+#ifdef HAVE_MALLOC_H
+#include <malloc.h> /* memalign() *///puneet
+#endif
+
+/* from config.h:
+ * define HAVE_POSIX_MEMALIGN 1 // if free(posix_memalign(3)) works, <stdlib.h>
+ * define HAVE_COMPLIANT_POSIX_MEMALIGN 1 // if free(posix_memalign(3)) works for sizes != 2^n, <stdlib.h>
+ * define HAVE_MEMALIGN 1 // if free(memalign(3)) works, <malloc.h>
+ * define HAVE_VALLOC 1 // if free(valloc(3)) works, <stdlib.h> or <malloc.h>
+ * if none is provided, we implement malloc(3)-based alloc-only page alignment
+ */
+
+#if !(HAVE_COMPLIANT_POSIX_MEMALIGN || HAVE_MEMALIGN || HAVE_VALLOC)
+#if EMULATOR
+
+PLS(compat_valloc_trash,gslice,GTrashStack *)
+#define compat_valloc_trash (*FUNCTION_NAME(compat_valloc_trash,gslice)())
+
+#else
+
+static GTrashStack *compat_valloc_trash = NULL;
+
+#endif /* EMULATOR */
+
+#endif
+
+static gpointer
+allocator_memalign (gsize alignment,
+ gsize memsize)
+{
+ gpointer aligned_memory = NULL;
+ gint err = ENOMEM;
+#if HAVE_COMPLIANT_POSIX_MEMALIGN
+ err = posix_memalign (&aligned_memory, alignment, memsize);
+#elif HAVE_MEMALIGN
+ errno = 0;
+ aligned_memory = memalign (alignment, memsize);
+ err = errno;
+#elif MOBILE_PORT
+ const guint n_pages = 2;
+ guint8 *mem = malloc (n_pages * sys_page_size);
+ err = errno;
+ if (mem)
+ {
+ guint8 *amem = (guint8*) ALIGN ((gsize) mem, sys_page_size);
+ guint16 offset = amem - mem;
+ guint16 *p = (guint16*)(amem + sys_page_size - NATIVE_MALLOC_PADDING);
+ *p = offset;
+ aligned_memory = amem;
+ }
+#elif HAVE_VALLOC
+ errno = 0;
+ aligned_memory = valloc (memsize);
+ err = errno;
+#else
+ /* simplistic non-freeing page allocator */
+ mem_assert (alignment == sys_page_size);
+ mem_assert (memsize <= sys_page_size);
+ if (!compat_valloc_trash)
+ {
+ const guint n_pages = 16;
+ guint8 *mem = malloc (n_pages * sys_page_size);
+ err = errno;
+ if (mem)
+ {
+ gint i = n_pages;
+ guint8 *amem = (guint8*) ALIGN ((gsize) mem, sys_page_size);
+ if (amem != mem)
+ i--; /* mem wasn't page aligned */
+ while (--i >= 0)
+ g_trash_stack_push (&compat_valloc_trash, amem + i * sys_page_size);
+ }
+ }
+ aligned_memory = g_trash_stack_pop (&compat_valloc_trash);
+#endif
+ if (!aligned_memory)
+ errno = err;
+ return aligned_memory;
+}
+
+static void
+allocator_memfree (gsize memsize,
+ gpointer mem)
+{
+#ifdef MOBILE_PORT
+ free (mem);
+#elif (HAVE_COMPLIANT_POSIX_MEMALIGN) || (HAVE_MEMALIGN || HAVE_VALLOC)
+ free (mem);
+#else
+ mem_assert (memsize <= sys_page_size);
+ g_trash_stack_push (&compat_valloc_trash, mem);
+#endif
+}
+
+#include <stdio.h>
+
+static void
+mem_error (const char *format,
+ ...)
+{
+ const char *pname;
+ va_list args;
+ /* at least, put out "MEMORY-ERROR", in case we segfault during the rest of the function */
+ fputs ("\n***MEMORY-ERROR***: ", stderr);
+ pname = g_get_prgname();
+ fprintf (stderr, "%s[%u]: GSlice: ", pname ? pname : "", getpid());
+ va_start (args, format);
+ vfprintf (stderr, format, args);
+ va_end (args);
+ fputs ("\n", stderr);
+ _exit (1);
+}
+
+#define __G_SLICE_C__
+#include "galiasdef.c"