/* 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;

 }