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Add framework to support task groups

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git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5562 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2013-01-25 17:23:38 +00:00
parent b6472b58dc
commit e95efd5d2a
20 changed files with 681 additions and 145 deletions
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nuttx/sched/task_init.c
+42 -12
View File
@@ -1,7 +1,7 @@
/****************************************************************************
* sched/task_init.c
*
* Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2007, 2009, 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@@ -42,6 +42,8 @@
#include <sys/types.h>
#include <stdint.h>
#include <sched.h>
#include <errno.h>
#include <nuttx/arch.h>
#include "os_internal.h"
@@ -102,10 +104,10 @@
* parameters are required, argv may be NULL.
*
* Return Value:
* OK on success; ERROR on failure. (See task_schedsetup() for possible
* failure conditions). On failure, the caller is responsible for freeing
* the stack memory and for calling sched_releasetcb() to free the TCB
* (which could be in most any state).
* OK on success; ERROR on failure with errno set appropriately. (See
* task_schedsetup() for possible failure conditions). On failure, the
* caller is responsible for freeing the stack memory and for calling
* sched_releasetcb() to free the TCB (which could be in most any state).
*
****************************************************************************/
@@ -118,14 +120,28 @@ int task_init(FAR _TCB *tcb, const char *name, int priority,
main_t entry, const char *argv[])
#endif
{
int errcode;
int ret;
/* Create a new task group */
#ifdef HAVE_TASK_GROUP
ret = group_create(tcb);
if (ret < 0)
{
errcode = -ret;
goto errout;
}
#endif
/* Associate file descriptors with the new task */
#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 0
if (sched_setuptaskfiles(tcb) != OK)
ret = sched_setuptaskfiles(tcb);
if (ret < 0)
{
return ERROR;
errcode = -ret;
goto errout_with_group;
}
#endif
@@ -143,13 +159,27 @@ int task_init(FAR _TCB *tcb, const char *name, int priority,
ret = task_schedsetup(tcb, priority, task_start, entry,
TCB_FLAG_TTYPE_TASK);
if (ret == OK)
if (ret < OK)
{
/* Setup to pass parameters to the new task */
(void)task_argsetup(tcb, name, argv);
errcode = -ret;
goto errout_with_env;
}
return ret;
/* Setup to pass parameters to the new task */
(void)task_argsetup(tcb, name, argv);
return OK;
errout_with_env:
env_release(tcb);
errout_with_group:
#ifdef HAVE_TASK_GROUP
group_leave(tcb);
errout:
#endif
set_errno(errcode);
return ERROR;
}