glib/tests/slice-concurrent.c
changeset 18 47c74d1534e1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/glib/tests/slice-concurrent.c	Fri Apr 16 16:46:38 2010 +0300
@@ -0,0 +1,131 @@
+/* test for gslice cross thread allocation/free
+ * Copyright (C) 2006 Stefan Westerfeld
+ * Copyright (C) 2007 Tim Janik
+ * Portions copyright (c) 2009 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.
+ */
+#include <glib.h>
+#include <stdlib.h>
+#include <unistd.h>
+#ifdef __SYMBIAN32__
+#include <glib_global.h>
+#include "mrt2_glib2_test.h"
+#endif /*__SYMBIAN32__*/
+#define N_THREADS	2
+#define N_ALLOCS	500
+#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, bytes, f, t;
+  char *mem;
+  // 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 */
+        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;
+#ifdef __SYMBIAN32__
+  g_log_set_handler (NULL,  G_LOG_FLAG_FATAL| G_LOG_FLAG_RECURSION | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING | G_LOG_LEVEL_MESSAGE | G_LOG_LEVEL_INFO | G_LOG_LEVEL_DEBUG, &mrtLogHandler, NULL);
+  g_set_print_handler(mrtPrintHandler);
+  #endif /*__SYMBIAN32__*/
+  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);
+    }
+#if __SYMBIAN32__
+  testResultXml("slice-concurrent");
+  #endif /* EMULATOR */	
+  return 0;
+}