threadx
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Outline
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#define TX_SOURCE_CODE
#include "tx_api.h"
#include "tx_trace.h"
#include "tx_event_flags.h"
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_tx_event_flags_create(TX_EVENT_FLAGS_GROUP *, CHAR *)
Files
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SourceVuSTM32 Libraries and Samplesthreadxcommon/src/tx_event_flags_create.c
 
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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 */ /** */ /** Event Flags */ /** */... /**************************************************************************/ /**************************************************************************/ #define TX_SOURCE_CODE /* Include necessary system files. */ #include "tx_api.h" #include "tx_trace.h" #include "tx_event_flags.h" ... /**************************************************************************/ /* */ /* FUNCTION RELEASE */ /* */ /* _tx_event_flags_create PORTABLE C */ /* 6.1 */ /* AUTHOR */ /* */ /* William E. Lamie, Microsoft Corporation */ /* */ /* DESCRIPTION */ /* */ /* This function creates a group of 32 event flags. All the flags are */ /* initially in a cleared state. */ /* */ /* INPUT */ /* */ /* group_ptr Pointer to event flags group */ /* control block */ /* name_ptr Pointer to event flags name */ /* */ /* OUTPUT */ /* */ /* TX_SUCCESS Successful completion status */ /* */ /* CALLS */ /* */ /* None */ /* */ /* 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_event_flags_create(TX_EVENT_FLAGS_GROUP *group_ptr, CHAR *name_ptr) { TX_INTERRUPT_SAVE_AREA TX_EVENT_FLAGS_GROUP *next_group; TX_EVENT_FLAGS_GROUP *previous_group; /* Initialize event flags control block to all zeros. */ TX_MEMSET(group_ptr, 0, (sizeof(TX_EVENT_FLAGS_GROUP))); /* Setup the basic event flags group fields. */ group_ptr -> tx_event_flags_group_name = name_ptr; /* Disable interrupts to put the event flags group on the created list. */ TX_DISABLE /* Setup the event flags ID to make it valid. */ group_ptr -> tx_event_flags_group_id = TX_EVENT_FLAGS_ID; /* Place the group on the list of created event flag groups. First, check for an empty list. *//* ... */ if (_tx_event_flags_created_count == TX_EMPTY) { /* The created event flags list is empty. Add event flag group to empty list. */ _tx_event_flags_created_ptr = group_ptr; group_ptr -> tx_event_flags_group_created_next = group_ptr; group_ptr -> tx_event_flags_group_created_previous = group_ptr; }if (_tx_event_flags_created_count == TX_EMPTY) { ... } else { /* This list is not NULL, add to the end of the list. */ next_group = _tx_event_flags_created_ptr; previous_group = next_group -> tx_event_flags_group_created_previous; /* Place the new event flag group in the list. */ next_group -> tx_event_flags_group_created_previous = group_ptr; previous_group -> tx_event_flags_group_created_next = group_ptr; /* Setup this group's created links. */ group_ptr -> tx_event_flags_group_created_previous = previous_group; group_ptr -> tx_event_flags_group_created_next = next_group; }else { ... } /* Increment the number of created event flag groups. */ _tx_event_flags_created_count++; /* Optional event flag group create extended processing. */ TX_EVENT_FLAGS_GROUP_CREATE_EXTENSION(group_ptr) /* If trace is enabled, register this object. */ TX_TRACE_OBJECT_REGISTER(TX_TRACE_OBJECT_TYPE_EVENT_FLAGS, group_ptr, name_ptr, 0, 0) /* If trace is enabled, insert this event into the trace buffer. */ TX_TRACE_IN_LINE_INSERT(TX_TRACE_EVENT_FLAGS_CREATE, group_ptr, TX_POINTER_TO_ULONG_CONVERT(&next_group), 0, 0, TX_TRACE_EVENT_FLAGS_EVENTS) /* Log this kernel call. */ TX_EL_EVENT_FLAGS_CREATE_INSERT /* Restore interrupts. */ TX_RESTORE /* Return TX_SUCCESS. */ return(TX_SUCCESS); }{ ... }
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