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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [librtems++/] [src/] [rtemsSemaphore.cc] - Blame information for rev 535

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1 30 unneback 
/*
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  ------------------------------------------------------------------------
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  $Id: rtemsSemaphore.cc,v 1.2 2001-09-27 12:02:05 chris Exp $
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  ------------------------------------------------------------------------
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  COPYRIGHT (c) 1997
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  Objective Design Systems Ltd Pty (ODS)
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  All rights reserved (R) Objective Design Systems Ltd Pty
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  The license and distribution terms for this file may be found in the
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  file LICENSE in this distribution or at
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  http://www.OARcorp.com/rtems/license.html.
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  ------------------------------------------------------------------------
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  See header file.
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  ------------------------------------------------------------------------
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*/
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#include <string.h>
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#include <rtems++/rtemsSemaphore.h>
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/* ----
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    rtemsSemaphore
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*/
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rtemsSemaphore::rtemsSemaphore(const char* sname,
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                               const Scope scope,
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                               const rtems_unsigned32 counter,
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                               const WaitMode wait_mode,
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                               const Type type,
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                               const Priority priority,
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                               const Ceiling ceiling,
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                               const rtems_task_priority priority_ceiling)
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  : name(0),
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    owner(true),
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    id(0)
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{
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  strcpy(name_str, "NOID");
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  create(sname,
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         scope,
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         counter,
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         wait_mode,
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         type,
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         priority,
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         ceiling,
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         priority_ceiling);
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}
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rtemsSemaphore::rtemsSemaphore(const char *sname, const rtems_unsigned32 node)
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  : name(0),
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    owner(false),
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    id(0)
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{
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  strcpy(name_str, "NOID");
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  connect(sname, node);
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}
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rtemsSemaphore::rtemsSemaphore(const rtemsSemaphore& semaphore)
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  : name(0),
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    owner(false),
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    id(0)
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{
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  name = semaphore.name;
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  strcpy(name_str, semaphore.name_str);
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  id = semaphore.id;
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}
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rtemsSemaphore::rtemsSemaphore()
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  : name(0),
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    owner(false),
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    id(0)
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{
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  strcpy(name_str, "NOID");
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}
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rtemsSemaphore::~rtemsSemaphore()
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{
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  destroy();
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}
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void rtemsSemaphore::make_invalid()
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{
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  strcpy(name_str, "NOID");
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  name = 0;
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  id = 0;
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  owner = false;
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}
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const rtems_status_code rtemsSemaphore::create(const char* sname,
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                                               const Scope scope,
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                                               const rtems_unsigned32 counter,
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                                               const WaitMode wait_mode,
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                                               const Type type,
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                                               const Priority priority,
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                                               const Ceiling ceiling,
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                                               const rtems_task_priority priority_ceiling)
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{
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  if (id)
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    return set_status_code(RTEMS_ILLEGAL_ON_SELF);
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  owner = true;
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  strcpy(name_str, "    ");
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  for (int c = 0; (c < 4) && (sname[c] != '\0'); c++)
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    name_str[c] = sname[c];
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  name = rtems_build_name(name_str[0],
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                          name_str[1],
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                          name_str[2],
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                          name_str[3]);
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  set_status_code(rtems_semaphore_create(name,
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                                         counter,
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                                         scope | wait_mode | type | priority | ceiling,
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                                         priority_ceiling,
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                                         &id));
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  if (unsuccessful())
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  {
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    make_invalid();
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  }
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  return last_status_code();
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}
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const rtems_status_code rtemsSemaphore::destroy()
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{
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  if (id && owner)
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  {
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    set_status_code(rtems_semaphore_delete(id));
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    make_invalid();
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  }
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  else
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    set_status_code(RTEMS_NOT_OWNER_OF_RESOURCE);
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  return last_status_code();
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}
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const rtemsSemaphore& rtemsSemaphore::operator=(const rtemsSemaphore& semaphore)
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{
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  if (!owner)
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  {
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    name = semaphore.name;
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    id = semaphore.id;
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  }
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  return *this;
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}
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const rtems_status_code rtemsSemaphore::connect(const char *sname,
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                                                const rtems_unsigned32 node)
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{
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  if (id && owner)
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    return set_status_code(RTEMS_UNSATISFIED);
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  // change state to not owner
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  owner = false;
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  strcpy(name_str, "    ");
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  for (int c = 0; (c < 4) && (sname[c] != '\0'); c++)
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    name_str[c] = sname[c];
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  name = rtems_build_name(name_str[0],
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                          name_str[1],
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                          name_str[2],
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                          name_str[3]);
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  set_status_code(rtems_semaphore_ident(name, node, &id));
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  if (unsuccessful())
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  {
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    make_invalid();
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  }
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  return last_status_code();
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}

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