mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-11-05 00:46:16 +01:00
2731276269
Fri Dec 2 10:55:07 2005 Tim Janik <timj@imendio.com>
* tests/slice-test.c: extended to perform the benchmarking on the old
memchunk code if 'O' is selected.
* tests/memchunks.c: new file which contains the old GLib mem chunks
implementation with prefix old_mem_chunk_.
* tests/Makefile.am: added memchunks.c
282 lines
9.1 KiB
C
282 lines
9.1 KiB
C
/* GLIB sliced memory - fast threaded memory chunk allocator
|
|
* Copyright (C) 2005 Tim Janik
|
|
*
|
|
* 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.
|
|
*/
|
|
#include <glib.h>
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/time.h> // gettimeofday
|
|
|
|
#define quick_rand32() (rand_accu = 1664525 * rand_accu + 1013904223, rand_accu)
|
|
static guint prime_size = 1021; // 769; // 509
|
|
static gboolean clean_memchunks = FALSE;
|
|
static guint number_of_blocks = 10000; /* total number of blocks allocated */
|
|
static guint number_of_repetitions = 10000; /* number of alloc+free repetitions */
|
|
|
|
/* --- old memchunk prototypes (memchunks.c) --- */
|
|
void old_mem_chunks_init (void);
|
|
GMemChunk* old_mem_chunk_new (const gchar *name,
|
|
gint atom_size,
|
|
gulong area_size,
|
|
gint type);
|
|
void old_mem_chunk_destroy (GMemChunk *mem_chunk);
|
|
gpointer old_mem_chunk_alloc (GMemChunk *mem_chunk);
|
|
gpointer old_mem_chunk_alloc0 (GMemChunk *mem_chunk);
|
|
void old_mem_chunk_free (GMemChunk *mem_chunk,
|
|
gpointer mem);
|
|
void old_mem_chunk_clean (GMemChunk *mem_chunk);
|
|
void old_mem_chunk_reset (GMemChunk *mem_chunk);
|
|
void old_mem_chunk_print (GMemChunk *mem_chunk);
|
|
void old_mem_chunk_info (void);
|
|
#ifndef G_ALLOC_AND_FREE
|
|
#define G_ALLOC_AND_FREE 2
|
|
#endif
|
|
|
|
/* --- functions --- */
|
|
static inline gpointer
|
|
memchunk_alloc (GMemChunk **memchunkp,
|
|
guint size)
|
|
{
|
|
size = MAX (size, 1);
|
|
if (G_UNLIKELY (!*memchunkp))
|
|
*memchunkp = old_mem_chunk_new ("", size, 4096, G_ALLOC_AND_FREE);
|
|
return old_mem_chunk_alloc (*memchunkp);
|
|
}
|
|
|
|
static inline void
|
|
memchunk_free (GMemChunk *memchunk,
|
|
gpointer chunk)
|
|
{
|
|
old_mem_chunk_free (memchunk, chunk);
|
|
if (clean_memchunks)
|
|
old_mem_chunk_clean (memchunk);
|
|
}
|
|
|
|
static gpointer
|
|
test_memchunk_thread (gpointer data)
|
|
{
|
|
guint32 rand_accu = 2147483563;
|
|
/* initialize random numbers */
|
|
if (data)
|
|
rand_accu = *(guint32*) data;
|
|
else
|
|
{
|
|
struct timeval rand_tv;
|
|
gettimeofday (&rand_tv, NULL);
|
|
rand_accu = rand_tv.tv_usec + (rand_tv.tv_sec << 16);
|
|
}
|
|
|
|
/* prepare for memchunk creation */
|
|
GMemChunk **memchunks = g_alloca (sizeof (memchunks[0]) * prime_size);
|
|
memset (memchunks, 0, sizeof (memchunks[0]) * prime_size);
|
|
|
|
guint i, j;
|
|
guint8 **ps = g_new (guint8*, number_of_blocks);
|
|
guint *ss = g_new (guint, number_of_blocks);
|
|
/* create number_of_blocks random sizes */
|
|
for (i = 0; i < number_of_blocks; i++)
|
|
ss[i] = quick_rand32() % prime_size;
|
|
/* allocate number_of_blocks blocks */
|
|
for (i = 0; i < number_of_blocks; i++)
|
|
ps[i] = memchunk_alloc (&memchunks[ss[i]], ss[i]);
|
|
for (j = 0; j < number_of_repetitions; j++)
|
|
{
|
|
/* free number_of_blocks/2 blocks */
|
|
for (i = 0; i < number_of_blocks; i += 2)
|
|
memchunk_free (memchunks[ss[i]], ps[i]);
|
|
/* allocate number_of_blocks/2 blocks with new sizes */
|
|
for (i = 0; i < number_of_blocks; i += 2)
|
|
{
|
|
ss[i] = quick_rand32() % prime_size;
|
|
ps[i] = memchunk_alloc (&memchunks[ss[i]], ss[i]);
|
|
}
|
|
}
|
|
/* free number_of_blocks blocks */
|
|
for (i = 0; i < number_of_blocks; i++)
|
|
memchunk_free (memchunks[ss[i]], ps[i]);
|
|
/* alloc and free many equally sized chunks in a row */
|
|
for (i = 0; i < number_of_repetitions; i++)
|
|
{
|
|
guint sz = quick_rand32() % prime_size;
|
|
guint k = number_of_blocks / 100;
|
|
for (j = 0; j < k; j++)
|
|
ps[j] = memchunk_alloc (&memchunks[sz], sz);
|
|
for (j = 0; j < k; j++)
|
|
memchunk_free (memchunks[sz], ps[j]);
|
|
}
|
|
/* cleanout memchunks */
|
|
for (i = 0; i < prime_size; i++)
|
|
if (memchunks[i])
|
|
old_mem_chunk_destroy (memchunks[i]);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static gpointer
|
|
test_sliced_mem_thread (gpointer data)
|
|
{
|
|
guint32 rand_accu = 2147483563;
|
|
/* initialize random numbers */
|
|
if (data)
|
|
rand_accu = *(guint32*) data;
|
|
else
|
|
{
|
|
struct timeval rand_tv;
|
|
gettimeofday (&rand_tv, NULL);
|
|
rand_accu = rand_tv.tv_usec + (rand_tv.tv_sec << 16);
|
|
}
|
|
|
|
guint i, j;
|
|
guint8 **ps = g_new (guint8*, number_of_blocks);
|
|
guint *ss = g_new (guint, number_of_blocks);
|
|
/* create number_of_blocks random sizes */
|
|
for (i = 0; i < number_of_blocks; i++)
|
|
ss[i] = quick_rand32() % prime_size;
|
|
/* allocate number_of_blocks blocks */
|
|
for (i = 0; i < number_of_blocks; i++)
|
|
ps[i] = g_slice_alloc (ss[i]);
|
|
for (j = 0; j < number_of_repetitions; j++)
|
|
{
|
|
/* free number_of_blocks/2 blocks */
|
|
for (i = 0; i < number_of_blocks; i += 2)
|
|
g_slice_free1 (ss[i], ps[i]);
|
|
/* allocate number_of_blocks/2 blocks with new sizes */
|
|
for (i = 0; i < number_of_blocks; i += 2)
|
|
{
|
|
ss[i] = quick_rand32() % prime_size;
|
|
ps[i] = g_slice_alloc (ss[i]);
|
|
}
|
|
}
|
|
/* free number_of_blocks blocks */
|
|
for (i = 0; i < number_of_blocks; i++)
|
|
g_slice_free1 (ss[i], ps[i]);
|
|
/* alloc and free many equally sized chunks in a row */
|
|
for (i = 0; i < number_of_repetitions; i++)
|
|
{
|
|
guint sz = quick_rand32() % prime_size;
|
|
guint k = number_of_blocks / 100;
|
|
for (j = 0; j < k; j++)
|
|
ps[j] = g_slice_alloc (sz);
|
|
for (j = 0; j < k; j++)
|
|
g_slice_free1 (sz, ps[j]);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
usage (void)
|
|
{
|
|
g_print ("Usage: gslicedmemory [n_threads] [G|S|M|O][f][c] [maxblocksize] [seed]\n");
|
|
}
|
|
|
|
int
|
|
main (int argc,
|
|
char *argv[])
|
|
{
|
|
guint seed32, *seedp = NULL;
|
|
gboolean ccounters = FALSE, use_memchunks = FALSE;
|
|
guint n_threads = 1;
|
|
const gchar *mode = "slab allocator + magazine cache", *emode = " ";
|
|
if (argc > 1)
|
|
n_threads = g_ascii_strtoull (argv[1], NULL, 10);
|
|
if (argc > 2)
|
|
{
|
|
guint i, l = strlen (argv[2]);
|
|
for (i = 0; i < l; i++)
|
|
switch (argv[2][i])
|
|
{
|
|
case 'G': /* GLib mode */
|
|
g_slice_set_config (G_SLICE_CONFIG_ALWAYS_MALLOC, FALSE);
|
|
g_slice_set_config (G_SLICE_CONFIG_BYPASS_MAGAZINES, FALSE);
|
|
mode = "slab allocator + magazine cache";
|
|
break;
|
|
case 'S': /* slab mode */
|
|
g_slice_set_config (G_SLICE_CONFIG_ALWAYS_MALLOC, FALSE);
|
|
g_slice_set_config (G_SLICE_CONFIG_BYPASS_MAGAZINES, TRUE);
|
|
mode = "slab allocator";
|
|
break;
|
|
case 'M': /* malloc mode */
|
|
g_slice_set_config (G_SLICE_CONFIG_ALWAYS_MALLOC, TRUE);
|
|
mode = "system malloc";
|
|
break;
|
|
case 'O': /* old memchunks */
|
|
use_memchunks = TRUE;
|
|
mode = "old memchunks";
|
|
break;
|
|
case 'f': /* eager freeing */
|
|
g_slice_set_config (G_SLICE_CONFIG_ALWAYS_FREE, TRUE);
|
|
clean_memchunks = TRUE;
|
|
emode = " with eager freeing";
|
|
break;
|
|
case 'c': /* print contention counters */
|
|
ccounters = TRUE;
|
|
break;
|
|
default:
|
|
usage();
|
|
return 1;
|
|
}
|
|
}
|
|
if (argc > 3)
|
|
prime_size = g_ascii_strtoull (argv[3], NULL, 10);
|
|
if (argc > 4)
|
|
{
|
|
seed32 = g_ascii_strtoull (argv[4], NULL, 10);
|
|
seedp = &seed32;
|
|
}
|
|
|
|
g_thread_init (NULL);
|
|
|
|
if (argc <= 1)
|
|
usage();
|
|
|
|
gchar strseed[64] = "<random>";
|
|
if (seedp)
|
|
g_snprintf (strseed, 64, "%u", *seedp);
|
|
g_print ("Starting %d threads allocating random blocks <= %u bytes with seed=%s using %s%s\n", n_threads, prime_size, strseed, mode, emode);
|
|
|
|
GThread *threads[n_threads];
|
|
guint i;
|
|
if (!use_memchunks)
|
|
for (i = 0; i < n_threads; i++)
|
|
threads[i] = g_thread_create_full (test_sliced_mem_thread, seedp, 0, TRUE, FALSE, 0, NULL);
|
|
else
|
|
{
|
|
old_mem_chunks_init();
|
|
for (i = 0; i < n_threads; i++)
|
|
threads[i] = g_thread_create_full (test_memchunk_thread, seedp, 0, TRUE, FALSE, 0, NULL);
|
|
}
|
|
for (i = 0; i < n_threads; i++)
|
|
g_thread_join (threads[i]);
|
|
|
|
if (ccounters)
|
|
{
|
|
guint n, n_chunks = g_slice_get_config (G_SLICE_CONFIG_CHUNK_SIZES);
|
|
g_print (" ChunkSize | MagazineSize | Contention\n");
|
|
for (i = 0; i < n_chunks; i++)
|
|
{
|
|
gint64 *vals = g_slice_get_config_state (G_SLICE_CONFIG_CONTENTION_COUNTER, i, &n);
|
|
g_print (" %9llu | %9llu | %9llu\n", vals[0], vals[2], vals[1]);
|
|
g_free (vals);
|
|
}
|
|
}
|
|
else
|
|
g_print ("Done.\n");
|
|
return 0;
|
|
}
|