Workspace usage trouble

[Joel Sherrill]

Cedric Aubert wrote:

>Hi all,
>
>I have some trouble with my workspace size. All work
>fine when I put some
>wrong number of task or semaphore or file dexcriptors
>but when I put the
>real number (with some upper number for task semaphore
>and file descriptor)
>that's don't work, it can't open allocate some task or
>other object in the
>workspace.
>
>So how can I see the available memory left in
>workspace ?
>  
>
I have worked up a routine to get information and free space left in the
heap but it has not been tested. 

>How can I known witch object use the workspace ?
>
>What I missed to specifie ?
>
>I take a look in the condefs but it seem to have
>nothing forgotten.
>
>  
>
Given the inquiry yesterday on the list and a night's, I think I 
remembered it:


/*
 * reent struct allocation moved here from libc_start_hook() to avoid
 * mutual exclusion problems when memory is allocated from the start hook.
 *
 * Memory is also now allocated from the workspace rather than the heap.
 *  -- ptorre 9/30/03
 */

The newlib C library reent extension was in the heap and is now in the 
workspace.
That needs to be accounted for in confdefs.h on a per task basis.  Try this
hack/patch and see if it helps:

$ cvs diff -u confdefs.h
Index: confdefs.h
===================================================================
RCS file: /usr1/CVS/rtems/cpukit/sapi/include/confdefs.h,v
retrieving revision 1.55.2.1
diff -u -r1.55.2.1 confdefs.h
--- confdefs.h  4 Sep 2003 18:47:20 -0000       1.55.2.1
+++ confdefs.h  16 Jan 2004 12:05:46 -0000
@@ -805,12 +805,15 @@
 #define CONFIGURE_OBJECT_TABLE_STUFF \
   ( sizeof(Objects_Control *) + sizeof(rtems_name *) + sizeof(rtems_name) )

+#include <reent.h>
+
 #define CONFIGURE_MEMORY_FOR_TASKS(_tasks) \
   (((_tasks) + 1 ) * \
    ((sizeof(Thread_Control) + CONTEXT_FP_SIZE + \
       STACK_MINIMUM_SIZE + sizeof( RTEMS_API_Control ) + \
       CONFIGURE_MEMORY_PER_TASK_FOR_POSIX_API + \
       CONFIGURE_MEMORY_PER_TASK_FOR_ITRON_API + \
+      sizeof(struct reent) + \
       CONFIGURE_OBJECT_TABLE_STUFF)) \
   )




>Thanks a lot
>
>Cedric
>
>
>/* configuration information */
>
>#include <bsp.h>
>#include <rtems.h>
>#include <stdlib.h>
>#include <stdio.h>
>#include <string.h>
>#include <Task.h>
>
>#define CONFIGURE_TEST_NEEDS_CONSOLE_DRIVER			// Use
>console
>
>#define CONFIGURE_RTEMS_INIT_TASKS_TABLE			// Utiliser
>la table Init Task
>plus bas
>
>#define CONFIGURE_MAXIMUM_TASKS 					53 			// 32 SDEL
>Task and 1 RTEMS Init
>Task
>#define CONFIGURE_MAXIMUM_POSIX_MESSAGE_QUEUES 		10		
>// Nombre de MailBox
>#define CONFIGURE_MAXIMUM_POSIX_QUEUED_SIGNALS 		3		
>// Signal
>#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 	300	
>	// Nombre Max de
>File Descriptor
>#define CONFIGURE_MAXIMUM_SEMAPHORES 				500			//
>Nombre Max de Semaphore
>#define CONFIGURE_NUMBER_OF_TERMIOS_PORTS 			12			//
>Nombre Max de Port
>Serie
>
>#define CONFIGURE_USE_IMFS_AS_BASE_FILESYSTEM // A la
>place de MiniIMFS pour
>avoir le support des link
>
>// #define CONFIGURE_MEMORY_OVERHEAD           		500		
>// Ko suplementaire
>
>#define STACK_CHECKER_ON 							1 // Activation du
>Stach Check
>
>#define CONFIGURE_INIT
>
>
>rtems_task Init(rtems_task_argument)
>{
>	/* Starting Application */
>}
>
>/*
> *  The user is defining their own table information
>and setting the
> *  appropriate variables.
> */
>
>/***************************************************************************
>******************/
>
>#define CONFIGURE_HAS_OWN_INIT_TASK_TABLE
>
>#ifdef CONFIGURE_HAS_OWN_INIT_TASK_TABLE
>
>#undef CONFIGURE_INIT_TASK_NAME
>#define CONFIGURE_INIT_TASK_NAME         
>rtems_build_name( 'm', 'a', 'i',
>'n' )
>
>#undef CONFIGURE_INIT_TASK_STACK_SIZE
>#define CONFIGURE_INIT_TASK_STACK_SIZE   
>RTEMS_MINIMUM_STACK_SIZE // 0x6000
>de place laissé par FBUG
>
>#undef CONFIGURE_INIT_TASK_PRIORITY
>#define CONFIGURE_INIT_TASK_PRIORITY      1
>
>#undef CONFIGURE_INIT_TASK_ATTRIBUTES
>#define CONFIGURE_INIT_TASK_ATTRIBUTES   
>RTEMS_DEFAULT_ATTRIBUTES
>
>#undef CONFIGURE_INIT_TASK_ENTRY_POINT
>#define CONFIGURE_INIT_TASK_ENTRY_POINT   Init
>
>#undef CONFIGURE_INIT_TASK_INITIAL_MODES
>#define CONFIGURE_INIT_TASK_INITIAL_MODES
>RTEMS_PREEMPT
>
>#undef CONFIGURE_INIT_TASK_ARGUMENTS
>#define CONFIGURE_INIT_TASK_ARGUMENTS     0
>
>#ifdef CONFIGURE_INIT
>
>rtems_initialization_tasks_table
>Initialization_tasks[] = {
>  { CONFIGURE_INIT_TASK_NAME,
>    CONFIGURE_INIT_TASK_STACK_SIZE,
>    CONFIGURE_INIT_TASK_PRIORITY,
>    CONFIGURE_INIT_TASK_ATTRIBUTES,
>    CONFIGURE_INIT_TASK_ENTRY_POINT,
>    CONFIGURE_INIT_TASK_INITIAL_MODES,
>    CONFIGURE_INIT_TASK_ARGUMENTS
>  }
>};
>
>#endif
>
>#define CONFIGURE_INIT_TASK_TABLE Initialization_tasks
>
>#define CONFIGURE_INIT_TASK_TABLE_SIZE \
>  sizeof(CONFIGURE_INIT_TASK_TABLE) /
>sizeof(rtems_initialization_tasks_table)
>
>#endif    /* CONFIGURE_HAS_OWN_INIT_TASK_TABLE */
>
>/***************************************************************************
>******************/
>
>#include <confdefs.h>
>
>--
>Cedric AUBERT
>Ingenieur Recherche et Developpement
>SDEL Controle Commande
>D2A - Rue Nungesser et Coli
>44860 Saint Aignan de Grand Lieu
>FRANCE
>
>Tel : +33 (0)2 40 84 50 00
>Poste : 5109
>Fax : +33 (0)2 40 84 51 10
>
>E-mail : cedric_aubert at yahoo.fr
>Web : http://www.sdelcc.com
>
>
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>  
>