URL https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk

Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [msgqcreate.c] - Blame information for rev 314

Go to most recent revision | Details | Compare with Previous | View Log


/*
 *  Message Queue Manager
 *
 *
 *  COPYRIGHT (c) 1989-1999.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.OARcorp.com/rtems/license.html.
 *
 *  $Id: msgqcreate.c,v 1.2 2001-09-27 11:59:19 chris Exp $
 */
 
#include <rtems/system.h>
#include <rtems/score/sysstate.h>
#include <rtems/score/chain.h>
#include <rtems/score/isr.h>
#include <rtems/score/coremsg.h>
#include <rtems/score/object.h>
#include <rtems/score/states.h>
#include <rtems/score/thread.h>
#include <rtems/score/wkspace.h>
#if defined(RTEMS_MULTIPROCESSING)
#include <rtems/score/mpci.h>
#endif
#include <rtems/rtems/status.h>
#include <rtems/rtems/attr.h>
#include <rtems/rtems/message.h>
#include <rtems/rtems/options.h>
#include <rtems/rtems/support.h>
 
/*PAGE
 *
 *  rtems_message_queue_create
 *
 *  This directive creates a message queue by allocating and initializing
 *  a message queue data structure.
 *
 *  Input parameters:
 *    name             - user defined queue name
 *    count            - maximum message and reserved buffer count
 *    max_message_size - maximum size of each message
 *    attribute_set    - process method
 *    id               - pointer to queue
 *
 *  Output parameters:
 *    id                - queue id
 *    RTEMS_SUCCESSFUL  - if successful
 *    error code        - if unsuccessful
 */
 
rtems_status_code rtems_message_queue_create(
  rtems_name          name,
  unsigned32          count,
  unsigned32          max_message_size,
  rtems_attribute     attribute_set,
  Objects_Id         *id
)
{
  register Message_queue_Control *the_message_queue;
  CORE_message_queue_Attributes   the_msgq_attributes;
  void                           *handler;
#if defined(RTEMS_MULTIPROCESSING)
  boolean                         is_global;
#endif
 
  if ( !rtems_is_name_valid( name ) )
    return RTEMS_INVALID_NAME;
 
#if defined(RTEMS_MULTIPROCESSING)
  if ( (is_global = _Attributes_Is_global( attribute_set ) ) &&
       !_System_state_Is_multiprocessing )
    return RTEMS_MP_NOT_CONFIGURED;
#endif
 
  if ( count == 0 )
      return RTEMS_INVALID_NUMBER;
 
  if ( max_message_size == 0 )
      return RTEMS_INVALID_SIZE;
 
#if defined(RTEMS_MULTIPROCESSING)
#if 1
  /*
   * I am not 100% sure this should be an error.
   * It seems reasonable to create a que with a large max size,
   * and then just send smaller msgs from remote (or all) nodes.
   */
 
  if ( is_global && (_MPCI_table->maximum_packet_size < max_message_size) )
    return RTEMS_INVALID_SIZE;
#endif
#endif
 
  _Thread_Disable_dispatch();              /* protects object pointer */
 
  the_message_queue = _Message_queue_Allocate( count, max_message_size );
 
  if ( !the_message_queue ) {
    _Thread_Enable_dispatch();
    return RTEMS_TOO_MANY;
  }
 
#if defined(RTEMS_MULTIPROCESSING)
  if ( is_global &&
    !( _Objects_MP_Allocate_and_open( &_Message_queue_Information,
                              name, the_message_queue->Object.id, FALSE ) ) ) {
    _Message_queue_Free( the_message_queue );
    _Thread_Enable_dispatch();
    return RTEMS_TOO_MANY;
  }
#endif
 
  the_message_queue->attribute_set = attribute_set;
 
  if (_Attributes_Is_priority( attribute_set ) )
    the_msgq_attributes.discipline = CORE_MESSAGE_QUEUE_DISCIPLINES_PRIORITY;
  else
    the_msgq_attributes.discipline = CORE_MESSAGE_QUEUE_DISCIPLINES_FIFO;
 
  handler = NULL;
#if defined(RTEMS_MULTIPROCESSING)
  handler = _Message_queue_MP_Send_extract_proxy;
#endif
 
  if ( ! _CORE_message_queue_Initialize(
           &the_message_queue->message_queue,
           OBJECTS_RTEMS_MESSAGE_QUEUES,
           &the_msgq_attributes,
           count,
           max_message_size,
           handler ) ) {
#if defined(RTEMS_MULTIPROCESSING)
    if ( is_global )
        _Objects_MP_Close(
          &_Message_queue_Information, the_message_queue->Object.id);
#endif
 
    _Message_queue_Free( the_message_queue );
    _Thread_Enable_dispatch();
    return RTEMS_TOO_MANY;
  }
 
  _Objects_Open(
    &_Message_queue_Information,
    &the_message_queue->Object,
    &name
  );
 
  *id = the_message_queue->Object.id;
 
#if defined(RTEMS_MULTIPROCESSING)
  if ( is_global )
    _Message_queue_MP_Send_process_packet(
      MESSAGE_QUEUE_MP_ANNOUNCE_CREATE,
      the_message_queue->Object.id,
      name,
 
    );
#endif
 
  _Thread_Enable_dispatch();
  return RTEMS_SUCCESSFUL;
}

Line No.	Rev	Author	Line
1	30	unneback	`/*`
2			`* Message Queue Manager`
3			`*`
4			`*`
5			`* COPYRIGHT (c) 1989-1999.`
6			`* On-Line Applications Research Corporation (OAR).`
7			`*`
8			`* The license and distribution terms for this file may be`
9			`* found in the file LICENSE in this distribution or at`
10			`* http://www.OARcorp.com/rtems/license.html.`
11			`*`
12			`* $Id: msgqcreate.c,v 1.2 2001-09-27 11:59:19 chris Exp $`
13			`*/`
14
15			`#include <rtems/system.h>`
16			`#include <rtems/score/sysstate.h>`
17			`#include <rtems/score/chain.h>`
18			`#include <rtems/score/isr.h>`
19			`#include <rtems/score/coremsg.h>`
20			`#include <rtems/score/object.h>`
21			`#include <rtems/score/states.h>`
22			`#include <rtems/score/thread.h>`
23			`#include <rtems/score/wkspace.h>`
24			`#if defined(RTEMS_MULTIPROCESSING)`
25			`#include <rtems/score/mpci.h>`
26			`#endif`
27			`#include <rtems/rtems/status.h>`
28			`#include <rtems/rtems/attr.h>`
29			`#include <rtems/rtems/message.h>`
30			`#include <rtems/rtems/options.h>`
31			`#include <rtems/rtems/support.h>`
32
33			`/*PAGE`
34			`*`
35			`* rtems_message_queue_create`
36			`*`
37			`* This directive creates a message queue by allocating and initializing`
38			`* a message queue data structure.`
39			`*`
40			`* Input parameters:`
41			`* name - user defined queue name`
42			`* count - maximum message and reserved buffer count`
43			`* max_message_size - maximum size of each message`
44			`* attribute_set - process method`
45			`* id - pointer to queue`
46			`*`
47			`* Output parameters:`
48			`* id - queue id`
49			`* RTEMS_SUCCESSFUL - if successful`
50			`* error code - if unsuccessful`
51			`*/`
52
53			`rtems_status_code rtems_message_queue_create(`
54			`rtems_name name,`
55			`unsigned32 count,`
56			`unsigned32 max_message_size,`
57			`rtems_attribute attribute_set,`
58			`Objects_Id *id`
59			`)`
60			`{`
61			`register Message_queue_Control *the_message_queue;`
62			`CORE_message_queue_Attributes the_msgq_attributes;`
63			`void *handler;`
64			`#if defined(RTEMS_MULTIPROCESSING)`
65			`boolean is_global;`
66			`#endif`
67
68			`if ( !rtems_is_name_valid( name ) )`
69			`return RTEMS_INVALID_NAME;`
70
71			`#if defined(RTEMS_MULTIPROCESSING)`
72			`if ( (is_global = _Attributes_Is_global( attribute_set ) ) &&`
73			`!_System_state_Is_multiprocessing )`
74			`return RTEMS_MP_NOT_CONFIGURED;`
75			`#endif`
76
77			`if ( count == 0 )`
78			`return RTEMS_INVALID_NUMBER;`
79
80			`if ( max_message_size == 0 )`
81			`return RTEMS_INVALID_SIZE;`
82
83			`#if defined(RTEMS_MULTIPROCESSING)`
84			`#if 1`
85			`/*`
86			`* I am not 100% sure this should be an error.`
87			`* It seems reasonable to create a que with a large max size,`
88			`* and then just send smaller msgs from remote (or all) nodes.`
89			`*/`
90
91			`if ( is_global && (_MPCI_table->maximum_packet_size < max_message_size) )`
92			`return RTEMS_INVALID_SIZE;`
93			`#endif`
94			`#endif`
95
96			`_Thread_Disable_dispatch(); /* protects object pointer */`
97
98			`the_message_queue = _Message_queue_Allocate( count, max_message_size );`
99
100			`if ( !the_message_queue ) {`
101			`_Thread_Enable_dispatch();`
102			`return RTEMS_TOO_MANY;`
103			`}`
104
105			`#if defined(RTEMS_MULTIPROCESSING)`
106			`if ( is_global &&`
107			`!( _Objects_MP_Allocate_and_open( &_Message_queue_Information,`
108			`name, the_message_queue->Object.id, FALSE ) ) ) {`
109			`_Message_queue_Free( the_message_queue );`
110			`_Thread_Enable_dispatch();`
111			`return RTEMS_TOO_MANY;`
112			`}`
113			`#endif`
114
115			`the_message_queue->attribute_set = attribute_set;`
116
117			`if (_Attributes_Is_priority( attribute_set ) )`
118			`the_msgq_attributes.discipline = CORE_MESSAGE_QUEUE_DISCIPLINES_PRIORITY;`
119			`else`
120			`the_msgq_attributes.discipline = CORE_MESSAGE_QUEUE_DISCIPLINES_FIFO;`
121
122			`handler = NULL;`
123			`#if defined(RTEMS_MULTIPROCESSING)`
124			`handler = _Message_queue_MP_Send_extract_proxy;`
125			`#endif`
126
127			`if ( ! _CORE_message_queue_Initialize(`
128			`&the_message_queue->message_queue,`
129			`OBJECTS_RTEMS_MESSAGE_QUEUES,`
130			`&the_msgq_attributes,`
131			`count,`
132			`max_message_size,`
133			`handler ) ) {`
134			`#if defined(RTEMS_MULTIPROCESSING)`
135			`if ( is_global )`
136			`_Objects_MP_Close(`
137			`&_Message_queue_Information, the_message_queue->Object.id);`
138			`#endif`
139
140			`_Message_queue_Free( the_message_queue );`
141			`_Thread_Enable_dispatch();`
142			`return RTEMS_TOO_MANY;`
143			`}`
144
145			`_Objects_Open(`
146			`&_Message_queue_Information,`
147			`&the_message_queue->Object,`
148			`&name`
149			`);`
150
151			`*id = the_message_queue->Object.id;`
152
153			`#if defined(RTEMS_MULTIPROCESSING)`
154			`if ( is_global )`
155			`_Message_queue_MP_Send_process_packet(`
156			`MESSAGE_QUEUE_MP_ANNOUNCE_CREATE,`
157			`the_message_queue->Object.id,`
158			`name,`
159
160			`);`
161			`#endif`
162
163			`_Thread_Enable_dispatch();`
164			`return RTEMS_SUCCESSFUL;`
165			`}`

Browse

Tools

Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [msgqcreate.c] - Blame information for rev 314