add SMP, Modules, and more processor/tools releases
This commit is contained in:
Scott Larson
311
common_smp/src/txe_thread_create.c
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311
common_smp/src/txe_thread_create.c
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/**************************************************************************/
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/* */
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/* Copyright (c) Microsoft Corporation. All rights reserved. */
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/* */
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/* This software is licensed under the Microsoft Software License */
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/* Terms for Microsoft Azure RTOS. Full text of the license can be */
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/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
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/* and in the root directory of this software. */
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/* */
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/**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** ThreadX Component */
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/** */
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/** Thread */
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/** */
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/**************************************************************************/
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/**************************************************************************/
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#define TX_SOURCE_CODE
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/* Include necessary system files. */
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#include "tx_api.h"
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#include "tx_initialize.h"
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#include "tx_thread.h"
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#include "tx_timer.h"
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* _txe_thread_create PORTABLE C */
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/* 6.0.1 */
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/* AUTHOR */
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/* */
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/* William E. Lamie, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This function checks for errors in the thread create function call. */
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/* */
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/* INPUT */
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/* */
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/* thread_ptr Thread control block pointer */
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/* name Pointer to thread name string */
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/* entry_function Entry function of the thread */
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/* entry_input 32-bit input value to thread */
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/* stack_start Pointer to start of stack */
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/* stack_size Stack size in bytes */
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/* priority Priority of thread (0-31) */
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/* preempt_threshold Preemption threshold */
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/* time_slice Thread time-slice value */
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/* auto_start Automatic start selection */
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/* thread_control_block_size Size of thread control block */
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/* */
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/* OUTPUT */
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/* */
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/* TX_THREAD_ERROR Invalid thread pointer */
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/* TX_PTR_ERROR Invalid entry point or stack */
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/* address */
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/* TX_SIZE_ERROR Invalid stack size -too small */
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/* TX_PRIORITY_ERROR Invalid thread priority */
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/* TX_THRESH_ERROR Invalid preemption threshold */
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/* status Actual completion status */
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/* */
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/* CALLS */
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/* */
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/* _tx_thread_create Actual thread create function */
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/* _tx_thread_system_preempt_check Check for preemption */
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/* */
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/* CALLED BY */
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/* */
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/* Application Code */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* DATE NAME DESCRIPTION */
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/* */
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/* 06-30-2020 William E. Lamie Initial Version 6.0.1 */
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/* */
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/**************************************************************************/
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UINT _txe_thread_create(TX_THREAD *thread_ptr, CHAR *name_ptr,
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VOID (*entry_function)(ULONG id), ULONG entry_input,
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VOID *stack_start, ULONG stack_size,
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UINT priority, UINT preempt_threshold,
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ULONG time_slice, UINT auto_start, UINT thread_control_block_size)
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{
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TX_INTERRUPT_SAVE_AREA
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UINT status;
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UINT break_flag;
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ULONG i;
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TX_THREAD *next_thread;
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VOID *stack_end;
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UCHAR *work_ptr;
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#ifndef TX_TIMER_PROCESS_IN_ISR
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TX_THREAD *current_thread;
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#endif
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/* Default status to success. */
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status = TX_SUCCESS;
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/* Check for an invalid thread pointer. */
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if (thread_ptr == TX_NULL)
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{
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/* Thread pointer is invalid, return appropriate error code. */
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status = TX_THREAD_ERROR;
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}
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/* Now check for invalid thread control block size. */
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else if (thread_control_block_size != (sizeof(TX_THREAD)))
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{
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/* Thread pointer is invalid, return appropriate error code. */
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status = TX_THREAD_ERROR;
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}
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else
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{
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/* Disable interrupts. */
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TX_DISABLE
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/* Increment the preempt disable flag. */
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_tx_thread_preempt_disable++;
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/* Restore interrupts. */
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TX_RESTORE
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/* Next see if it is already in the created list. */
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break_flag = TX_FALSE;
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next_thread = _tx_thread_created_ptr;
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work_ptr = TX_VOID_TO_UCHAR_POINTER_CONVERT(stack_start);
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work_ptr = TX_UCHAR_POINTER_ADD(work_ptr, (stack_size - ((ULONG) 1)));
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stack_end = TX_UCHAR_TO_VOID_POINTER_CONVERT(work_ptr);
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for (i = ((ULONG) 0); i < _tx_thread_created_count; i++)
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{
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/* Determine if this thread matches the thread in the list. */
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if (thread_ptr == next_thread)
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{
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/* Set the break flag. */
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break_flag = TX_TRUE;
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}
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/* Determine if we need to break the loop. */
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if (break_flag == TX_TRUE)
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{
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/* Yes, break out of the loop. */
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break;
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}
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/* Check the stack pointer to see if it overlaps with this thread's stack. */
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if (stack_start >= next_thread -> tx_thread_stack_start)
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{
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if (stack_start < next_thread -> tx_thread_stack_end)
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{
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/* This stack overlaps with an existing thread, clear the stack pointer to
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force a stack error below. */
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stack_start = TX_NULL;
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/* Set the break flag. */
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break_flag = TX_TRUE;
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}
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}
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/* Check the end of the stack to see if it is inside this thread's stack area as well. */
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if (stack_end >= next_thread -> tx_thread_stack_start)
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{
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if (stack_end < next_thread -> tx_thread_stack_end)
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{
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/* This stack overlaps with an existing thread, clear the stack pointer to
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force a stack error below. */
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stack_start = TX_NULL;
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/* Set the break flag. */
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break_flag = TX_TRUE;
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}
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}
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/* Move to the next thread. */
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next_thread = next_thread -> tx_thread_created_next;
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}
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/* Disable interrupts. */
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TX_DISABLE
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/* Decrement the preempt disable flag. */
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_tx_thread_preempt_disable--;
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/* Restore interrupts. */
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TX_RESTORE
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/* Check for preemption. */
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_tx_thread_system_preempt_check();
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/* At this point, check to see if there is a duplicate thread. */
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if (thread_ptr == next_thread)
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{
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/* Thread is already created, return appropriate error code. */
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status = TX_THREAD_ERROR;
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}
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/* Check for invalid starting address of stack. */
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else if (stack_start == TX_NULL)
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{
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/* Invalid stack or entry point, return appropriate error code. */
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status = TX_PTR_ERROR;
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}
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/* Check for invalid thread entry point. */
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else if (entry_function == TX_NULL)
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{
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/* Invalid stack or entry point, return appropriate error code. */
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status = TX_PTR_ERROR;
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}
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/* Check the stack size. */
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else if (stack_size < ((ULONG) TX_MINIMUM_STACK))
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{
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/* Stack is not big enough, return appropriate error code. */
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status = TX_SIZE_ERROR;
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}
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/* Check the priority specified. */
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else if (priority >= ((UINT) TX_MAX_PRIORITIES))
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{
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/* Invalid priority selected, return appropriate error code. */
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status = TX_PRIORITY_ERROR;
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}
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/* Check preemption threshold. */
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else if (preempt_threshold > priority)
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{
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/* Invalid preempt threshold, return appropriate error code. */
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status = TX_THRESH_ERROR;
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}
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/* Check the start selection. */
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else if (auto_start > TX_AUTO_START)
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{
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/* Invalid auto start selection, return appropriate error code. */
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status = TX_START_ERROR;
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}
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else
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{
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#ifndef TX_TIMER_PROCESS_IN_ISR
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/* Pickup thread pointer. */
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TX_THREAD_GET_CURRENT(current_thread)
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/* Check for invalid caller of this function. First check for a calling thread. */
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if (current_thread == &_tx_timer_thread)
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{
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/* Invalid caller of this function, return appropriate error code. */
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status = TX_CALLER_ERROR;
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}
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#endif
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/* Check for interrupt call. */
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if (TX_THREAD_GET_SYSTEM_STATE() != ((ULONG) 0))
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{
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/* Now, make sure the call is from an interrupt and not initialization. */
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if (TX_THREAD_GET_SYSTEM_STATE() < TX_INITIALIZE_IN_PROGRESS)
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{
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/* Invalid caller of this function, return appropriate error code. */
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status = TX_CALLER_ERROR;
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}
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}
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}
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}
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/* Determine if everything is okay. */
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if (status == TX_SUCCESS)
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{
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/* Call actual thread create function. */
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status = _tx_thread_create(thread_ptr, name_ptr, entry_function, entry_input,
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stack_start, stack_size, priority, preempt_threshold,
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time_slice, auto_start);
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}
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/* Return completion status. */
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return(status);
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}
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