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Diffstat (limited to 'nuttx/sched/task_create.c')
| -rw-r--r-- | nuttx/sched/task_create.c | 290 |
1 files changed, 0 insertions, 290 deletions
diff --git a/nuttx/sched/task_create.c b/nuttx/sched/task_create.c deleted file mode 100644 index 944743200..000000000 --- a/nuttx/sched/task_create.c +++ /dev/null @@ -1,290 +0,0 @@ -/**************************************************************************** - * sched/task_create.c - * - * Copyright (C) 2007-2010, 2013 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <sys/types.h> -#include <sched.h> -#include <errno.h> -#include <debug.h> - -#include <nuttx/arch.h> -#include <nuttx/kmalloc.h> - -#include "os_internal.h" -#include "group_internal.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Type Declarations - ****************************************************************************/ - -/**************************************************************************** - * Global Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: thread_create - * - * Description: - * This function creates and activates a new thread of the specified type - * with a specified priority and returns its system-assigned ID. It is the - * internal, commn implementation of task_create() and kernel_thread(). - * See comments with task_create() for further information. - * - * Input Parameters: - * name - Name of the new task - * ttype - Type of the new task - * priority - Priority of the new task - * stack_size - size (in bytes) of the stack needed - * entry - Entry point of a new task - * arg - A pointer to an array of input parameters. Up to - * CONFIG_MAX_TASK_ARG parameters may be provided. If fewer - * than CONFIG_MAX_TASK_ARG parameters are passed, the list - * should be terminated with a NULL argv[] value. If no - * parameters are required, argv may be NULL. - * - * Return Value: - * Returns the non-zero process ID of the new task or ERROR if memory is - * insufficient or the task cannot be created. The errno will be set to - * indicate the nature of the error (always ENOMEM). - * - ****************************************************************************/ - -#ifndef CONFIG_CUSTOM_STACK -static int thread_create(const char *name, uint8_t ttype, int priority, - int stack_size, main_t entry, const char **argv) -#else -static int thread_create(const char *name, uint8_t ttype, int priority, - main_t entry, const char **argv) -#endif -{ - FAR _TCB *tcb; - pid_t pid; - int errcode; - int ret; - - /* Allocate a TCB for the new task. */ - - tcb = (FAR _TCB*)kzalloc(sizeof(_TCB)); - if (!tcb) - { - errcode = ENOMEM; - goto errout; - } - - /* Allocate a new task group */ - -#ifdef HAVE_TASK_GROUP - ret = group_allocate(tcb); - if (ret < 0) - { - errcode = -ret; - goto errout_with_tcb; - } -#endif - - /* Associate file descriptors with the new task */ - -#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 0 - ret = group_setuptaskfiles(tcb); - if (ret != OK) - { - errcode = -ret; - goto errout_with_tcb; - } -#endif - - /* Allocate the stack for the TCB */ - -#ifndef CONFIG_CUSTOM_STACK - ret = up_create_stack(tcb, stack_size); - if (ret != OK) - { - errcode = -ret; - goto errout_with_tcb; - } -#endif - - /* Initialize the task control block */ - - ret = task_schedsetup(tcb, priority, task_start, entry, ttype); - if (ret < OK) - { - errcode = -ret; - goto errout_with_tcb; - } - - /* Setup to pass parameters to the new task */ - - (void)task_argsetup(tcb, name, argv); - - /* Now we have enough in place that we can join the group */ - -#ifdef HAVE_TASK_GROUP - ret = group_initialize(tcb); - if (ret < 0) - { - errcode = -ret; - goto errout_with_tcb; - } -#endif - - /* Get the assigned pid before we start the task */ - - pid = (int)tcb->pid; - - /* Activate the task */ - - ret = task_activate(tcb); - if (ret != OK) - { - errcode = get_errno(); - - /* The TCB was added to the active task list by task_schedsetup() */ - - dq_rem((FAR dq_entry_t*)tcb, (dq_queue_t*)&g_inactivetasks); - goto errout_with_tcb; - } - - return pid; - -errout_with_tcb: - sched_releasetcb(tcb); - -errout: - set_errno(errcode); - return ERROR; -} - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: task_create - * - * Description: - * This function creates and activates a new task with a specified - * priority and returns its system-assigned ID. - * - * The entry address entry is the address of the "main" function of the - * task. This function will be called once the C environment has been - * set up. The specified function will be called with four arguments. - * Should the specified routine return, a call to exit() will - * automatically be made. - * - * Note that four (and only four) arguments must be passed for the spawned - * functions. - * - * Input Parameters: - * name - Name of the new task - * priority - Priority of the new task - * stack_size - size (in bytes) of the stack needed - * entry - Entry point of a new task - * arg - A pointer to an array of input parameters. Up to - * CONFIG_MAX_TASK_ARG parameters may be provided. If fewer - * than CONFIG_MAX_TASK_ARG parameters are passed, the list - * should be terminated with a NULL argv[] value. If no - * parameters are required, argv may be NULL. - * - * Return Value: - * Returns the non-zero process ID of the new task or ERROR if memory is - * insufficient or the task cannot be created. The errno will be set to - * indicate the nature of the error (always ENOMEM). - * - ****************************************************************************/ - -#ifndef CONFIG_CUSTOM_STACK -int task_create(const char *name, int priority, - int stack_size, main_t entry, const char *argv[]) -#else -int task_create(const char *name, int priority, - main_t entry, const char *argv[]) -#endif -{ -#ifndef CONFIG_CUSTOM_STACK - return thread_create(name, TCB_FLAG_TTYPE_TASK, priority, stack_size, entry, argv); -#else - return thread_create(name, TCB_FLAG_TTYPE_TASK, priority, entry, argv); -#endif -} - -/**************************************************************************** - * Name: kernel_thread - * - * Description: - * This function creates and activates a kernel thread task with kernel- - * mode privileges. It is identical to task_create() except that it - * configures the newly started thread to run in kernel model. - * - * Input Parameters: - * (same as task_create()) - * - * Return Value: - * (same as task_create()) - * - ****************************************************************************/ - -#ifndef CONFIG_CUSTOM_STACK -int kernel_thread(const char *name, int priority, - int stack_size, main_t entry, const char *argv[]) -#else -int kernel_thread(const char *name, int priority, - main_t entry, const char *argv[]) -#endif -{ -#ifndef CONFIG_CUSTOM_STACK - return thread_create(name, TCB_FLAG_TTYPE_KERNEL, priority, stack_size, entry, argv); -#else - return thread_create(name, TCB_FLAG_TTYPE_KERNEL, priority, entry, argv); -#endif -} - |