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Release 6.1.7

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Bo Chen
2021-06-02 06:45:05 +00:00
parent d759e6bb9e
commit f5056f4923
1269 changed files with 57325 additions and 55178 deletions
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107
utility/rtos_compatibility_layers/posix/px_in_thread_context.c Normal file
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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. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** POSIX wrapper for THREADX */
/** */
/** */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#include "tx_api.h" /* Threadx API */
#include "pthread.h" /* Posix API */
#include "px_int.h" /* Posix helper functions */
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* posix_in_thread_context PORTABLE C */
/* 6.x */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function determines if the system is currently in "thread" */
/* context, i.e. not timer routine, not ISR, not idling. */
/* */
/* INPUT */
/* */
/* None */
/* */
/* OUTPUT */
/* */
/* TX_TRUE | TX_FALSE */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* posix internal code */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* xx-xx-xxxx William E. Lamie Initial Version 6.x */
/* */
/**************************************************************************/
ULONG posix_in_thread_context(VOID)
{
/* External variables, defined within ThreadX, needed here. */
extern TX_THREAD * _tx_thread_current_ptr;
extern ULONG _tx_thread_system_state;
#ifndef TX_TIMER_PROCESS_IN_ISR
extern TX_THREAD _tx_timer_thread;
#endif
/* Return TX_FALSE if any of the following are true:
- we are in the scheduling loop (not in a thread);
- we are in an ISR
- we are in a timer routine
Return TX_TRUE otherwise (we are in a thread.)
*/
if (_tx_thread_system_state == TX_INITIALIZE_IN_PROGRESS)
{
/* We are calling from initialization, return TRUE. */
return(TX_TRUE);
}
else if ((!_tx_thread_current_ptr) /* Not in a thread */
|| (_tx_thread_system_state) /* In an ISR */
#ifndef TX_TIMER_PROCESS_IN_ISR
/* Timer routine */
|| (_tx_thread_current_ptr == &_tx_timer_thread)
#endif
)
{
/* We are NOT in thread (thread) context. */
return (TX_FALSE);
}
else
{
/* We ARE in thread (thread) context. */
return (TX_TRUE);
}
}