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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 */
/** */
/** Trace */
/** */
/**************************************************************************/
/**************************************************************************/
#define TX_SOURCE_CODE
/* Include necessary system files. */
#include "tx_api.h"
#include "tx_trace.h"
#ifdef TX_ENABLE_EVENT_TRACE
/* Define the pointer to the start of the trace buffer control structure. */
TX_TRACE_HEADER *_tx_trace_header_ptr;
/* Define the pointer to the start of the trace object registry area in the trace buffer. */
TX_TRACE_OBJECT_ENTRY *_tx_trace_registry_start_ptr;
/* Define the pointer to the end of the trace object registry area in the trace buffer. */
TX_TRACE_OBJECT_ENTRY *_tx_trace_registry_end_ptr;
/* Define the pointer to the starting entry of the actual trace event area of the trace buffer. */
TX_TRACE_BUFFER_ENTRY *_tx_trace_buffer_start_ptr;
/* Define the pointer to the ending entry of the actual trace event area of the trace buffer. */
TX_TRACE_BUFFER_ENTRY *_tx_trace_buffer_end_ptr;
/* Define the pointer to the current entry of the actual trace event area of the trace buffer. */
TX_TRACE_BUFFER_ENTRY *_tx_trace_buffer_current_ptr;
/* Define the trace event enable bits, where each bit represents a type of event that can be enabled
or disabled dynamically by the application. */
ULONG _tx_trace_event_enable_bits;
/* Define a counter that is used in environments that don't have a timer source. This counter
is incremented on each use giving each event a unique timestamp. */
ULONG _tx_trace_simulated_time;
/* Define the function pointer used to call the application when the trace buffer wraps. If NULL,
the application has not registered a callback function. */
VOID (*_tx_trace_full_notify_function)(VOID *buffer);
/* Define the total number of registry entries. */
ULONG _tx_trace_total_registry_entries;
/* Define a counter that is used to track the number of available registry entries. */
ULONG _tx_trace_available_registry_entries;
/* Define an index that represents the start of the registry search. */
ULONG _tx_trace_registry_search_start;
#endif
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_trace_initialize PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function initializes the various control data structures for */
/* the trace component. */
/* */
/* INPUT */
/* */
/* None */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* _tx_initialize_high_level High level initialization */
/* */
/* 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 */
/* */
/**************************************************************************/
VOID _tx_trace_initialize(VOID)
{
#ifdef TX_ENABLE_EVENT_TRACE
#ifndef TX_DISABLE_REDUNDANT_CLEARING
/* Initialize all the pointers to the trace buffer to NULL. */
_tx_trace_header_ptr = TX_NULL;
_tx_trace_registry_start_ptr = TX_NULL;
_tx_trace_registry_end_ptr = TX_NULL;
_tx_trace_buffer_start_ptr = TX_NULL;
_tx_trace_buffer_end_ptr = TX_NULL;
_tx_trace_buffer_current_ptr = TX_NULL;
#endif
#endif
}
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