mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2025-10-31 08:22:16 +01:00
f2fa3c8593
Thu Jul 12 17:31:08 2007 Tim Janik <timj@imendio.com> * tests/slice-concurrent.c: beautified output somewhat. fixed long sleeps by reducing sleep accumulating and using randomized re-scheduling (which works on UP and SMP). increased possible blocksizes. svn path=/trunk/; revision=5631
121 lines
3.3 KiB
C
121 lines
3.3 KiB
C
/* test for gslice cross thread allocation/free
|
|
* Copyright (C) 2006 Stefan Westerfeld
|
|
* Copyright (C) 2007 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 <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#define N_THREADS 8
|
|
#define N_ALLOCS 50000
|
|
#define MAX_BLOCK_SIZE 64
|
|
|
|
struct ThreadData
|
|
{
|
|
int thread_id;
|
|
GThread* gthread;
|
|
|
|
GMutex* to_free_mutex;
|
|
void* to_free [N_THREADS * N_ALLOCS];
|
|
int bytes_to_free [N_THREADS * N_ALLOCS];
|
|
int n_to_free;
|
|
int n_freed;
|
|
} tdata[N_THREADS];
|
|
|
|
void*
|
|
thread_func (void *arg)
|
|
{
|
|
struct ThreadData *td = arg;
|
|
int i;
|
|
// g_print ("Thread %d starting\n", td->thread_id);
|
|
for (i = 0; i < N_ALLOCS; i++)
|
|
{
|
|
if (rand() % (N_ALLOCS / 20) == 0)
|
|
g_print ("%c", 'a' - 1 + td->thread_id);
|
|
|
|
/* allocate block of random size and randomly fill */
|
|
int bytes = rand() % MAX_BLOCK_SIZE + 1;
|
|
char *mem = g_slice_alloc (bytes);
|
|
int f;
|
|
for (f = 0; f < bytes; f++)
|
|
mem[f] = rand();
|
|
|
|
/* associate block with random thread */
|
|
int t = rand() % N_THREADS;
|
|
g_mutex_lock (tdata[t].to_free_mutex);
|
|
tdata[t].to_free[tdata[t].n_to_free] = mem;
|
|
tdata[t].bytes_to_free[tdata[t].n_to_free] = bytes;
|
|
tdata[t].n_to_free++;
|
|
g_mutex_unlock (tdata[t].to_free_mutex);
|
|
|
|
/* shuffle thread execution order every once in a while */
|
|
if (rand() % 97 == 0)
|
|
{
|
|
if (rand() % 2)
|
|
g_thread_yield(); /* concurrent shuffling for single core */
|
|
else
|
|
g_usleep (1000); /* concurrent shuffling for multi core */
|
|
}
|
|
|
|
/* free a block associated with this thread */
|
|
g_mutex_lock (td->to_free_mutex);
|
|
if (td->n_to_free > 0)
|
|
{
|
|
td->n_to_free--;
|
|
g_slice_free1 (td->bytes_to_free[td->n_to_free], td->to_free[td->n_to_free]);
|
|
td->n_freed++;
|
|
}
|
|
g_mutex_unlock (td->to_free_mutex);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
main()
|
|
{
|
|
int t;
|
|
|
|
g_thread_init (NULL);
|
|
|
|
for (t = 0; t < N_THREADS; t++)
|
|
{
|
|
tdata[t].thread_id = t + 1;
|
|
tdata[t].n_to_free = 0;
|
|
tdata[t].n_freed = 0;
|
|
tdata[t].to_free_mutex = g_mutex_new();
|
|
}
|
|
g_print ("Starting %d threads for concurrent GSlice usage...\n", N_THREADS);
|
|
for (t = 0; t < N_THREADS; t++)
|
|
{
|
|
tdata[t].gthread = g_thread_create (thread_func, &tdata[t], TRUE, NULL);
|
|
g_assert (tdata[t].gthread != NULL);
|
|
}
|
|
for (t = 0; t < N_THREADS; t++)
|
|
{
|
|
g_thread_join (tdata[t].gthread);
|
|
}
|
|
g_print ("\n");
|
|
for (t = 0; t < N_THREADS; t++)
|
|
{
|
|
g_print ("Thread %d: %d blocks freed, %d blocks not freed\n",
|
|
tdata[t].thread_id, tdata[t].n_freed, tdata[t].n_to_free);
|
|
}
|
|
return 0;
|
|
}
|