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/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Thread */
/** */
/**************************************************************************/
/**************************************************************************/
#define TX_SOURCE_CODE
/* Include necessary system files. */
#include "tx_api.h"
#include "tx_trace.h"
#include "tx_thread.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_thread_wait_abort PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function aborts the wait condition that the specified thread */
/* is in - regardless of what object the thread is waiting on - and */
/* returns a TX_WAIT_ABORTED status to the specified thread. */
/* */
/* INPUT */
/* */
/* thread_ptr Thread to abort the wait on */
/* */
/* OUTPUT */
/* */
/* status Return completion status */
/* */
/* CALLS */
/* */
/* Suspension Cleanup Functions */
/* _tx_thread_system_resume */
/* _tx_thread_system_ni_resume Non-interruptable resume thread */
/* */
/* CALLED BY */
/* */
/* Application code */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 William E. Lamie Initial Version 6.0 */
/* 09-30-2020 Yuxin Zhou Modified comment(s), */
/* resulting in version 6.1 */
/* */
/**************************************************************************/
UINT _tx_thread_wait_abort(TX_THREAD *thread_ptr)
{
TX_INTERRUPT_SAVE_AREA
VOID (*suspend_cleanup)(struct TX_THREAD_STRUCT *suspend_thread_ptr, ULONG suspension_sequence);
UINT status;
ULONG suspension_sequence;
/* Disable interrupts. */
TX_DISABLE
/* If trace is enabled, insert this event into the trace buffer. */
TX_TRACE_IN_LINE_INSERT(TX_TRACE_THREAD_WAIT_ABORT, thread_ptr, thread_ptr -> tx_thread_state, 0, 0, TX_TRACE_THREAD_EVENTS)
/* Log this kernel call. */
TX_EL_THREAD_WAIT_ABORT_INSERT
/* Determine if the thread is currently suspended. */
if (thread_ptr -> tx_thread_state < TX_SLEEP)
{
/* Thread is either ready, completed, terminated, or in a pure
suspension condition. */
/* Restore interrupts. */
TX_RESTORE
/* Just return with an error message to indicate that
nothing was done. */
status = TX_WAIT_ABORT_ERROR;
}
else
{
/* Check for a sleep condition. */
if (thread_ptr -> tx_thread_state == TX_SLEEP)
{
/* Set the state to terminated. */
thread_ptr -> tx_thread_state = TX_SUSPENDED;
/* Set the TX_WAIT_ABORTED status in the thread that is
sleeping. */
thread_ptr -> tx_thread_suspend_status = TX_WAIT_ABORTED;
/* Make sure there isn't a suspend cleanup routine. */
thread_ptr -> tx_thread_suspend_cleanup = TX_NULL;
#ifndef TX_NOT_INTERRUPTABLE
/* Increment the disable preemption flag. */
_tx_thread_preempt_disable++;
/* Restore interrupts. */
TX_RESTORE
#endif
}
else
{
/* Process all other suspension timeouts. */
/* Set the state to suspended. */
thread_ptr -> tx_thread_state = TX_SUSPENDED;
/* Pickup the cleanup routine address. */
suspend_cleanup = thread_ptr -> tx_thread_suspend_cleanup;
#ifndef TX_NOT_INTERRUPTABLE
/* Pickup the suspension sequence number that is used later to verify that the
cleanup is still necessary. */
suspension_sequence = thread_ptr -> tx_thread_suspension_sequence;
#else
/* When not interruptable is selected, the suspension sequence is not used - just set to 0. */
suspension_sequence = ((ULONG) 0);
#endif
/* Set the TX_WAIT_ABORTED status in the thread that was
suspended. */
thread_ptr -> tx_thread_suspend_status = TX_WAIT_ABORTED;
#ifndef TX_NOT_INTERRUPTABLE
/* Increment the disable preemption flag. */
_tx_thread_preempt_disable++;
/* Restore interrupts. */
TX_RESTORE
#endif
/* Call any cleanup routines. */
if (suspend_cleanup != TX_NULL)
{
/* Yes, there is a function to call. */
(suspend_cleanup)(thread_ptr, suspension_sequence);
}
}
/* If the abort of the thread wait was successful, if so resume the thread. */
if (thread_ptr -> tx_thread_suspend_status == TX_WAIT_ABORTED)
{
#ifdef TX_THREAD_ENABLE_PERFORMANCE_INFO
/* Increment the total number of thread wait aborts. */
_tx_thread_performance_wait_abort_count++;
/* Increment this thread's wait abort count. */
thread_ptr -> tx_thread_performance_wait_abort_count++;
#endif
#ifdef TX_NOT_INTERRUPTABLE
/* Resume the thread! */
_tx_thread_system_ni_resume(thread_ptr);
/* Restore interrupts. */
TX_RESTORE
#else
/* Lift the suspension on the previously waiting thread. */
_tx_thread_system_resume(thread_ptr);
#endif
/* Return a successful status. */
status = TX_SUCCESS;
}
else
{
#ifdef TX_NOT_INTERRUPTABLE
/* Restore interrupts. */
TX_RESTORE
#else
/* Disable interrupts. */
TX_DISABLE
/* Decrement the disable preemption flag. */
_tx_thread_preempt_disable--;
/* Restore interrupts. */
TX_RESTORE
#endif
/* Return with an error message to indicate that
nothing was done. */
status = TX_WAIT_ABORT_ERROR;
}
}
/* Return completion status. */
return(status);
}
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