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95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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---
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A special exception to the GPL can be applied should you wish to distribute
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a combined work that includes ChibiOS/RT, without being obliged to provide
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the source code for any proprietary components. See the file exception.txt
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for full details of how and when the exception can be applied.
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*/
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/**
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* @file chdebug.c
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* @brief ChibiOS/RT Debug code.
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*
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* @addtogroup debug
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* @details Debug APIs and services:
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* - Trace buffer.
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* - Parameters check.
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* - Kernel assertions.
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* .
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* @{
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*/
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#include "ch.h"
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#if CH_DBG_ENABLE_TRACE
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/**
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* @brief Public trace buffer.
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*/
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TraceBuffer trace_buffer;
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/**
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* @brief Trace circular buffer subsystem initialization.
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*/
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void trace_init(void) {
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trace_buffer.tb_size = TRACE_BUFFER_SIZE;
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trace_buffer.tb_ptr = &trace_buffer.tb_buffer[0];
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}
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/**
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* @brief Inserts in the circular debug trace buffer a context switch record.
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*
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* @param[in] otp the thread being switched out
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*/
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void chDbgTrace(Thread *otp) {
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trace_buffer.tb_ptr->cse_wtobjp = otp->p_u.wtobjp;
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trace_buffer.tb_ptr->cse_time = chTimeNow();
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trace_buffer.tb_ptr->cse_state = otp->p_state;
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trace_buffer.tb_ptr->cse_tid = (unsigned)currp >> 6;
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if (++trace_buffer.tb_ptr >= &trace_buffer.tb_buffer[TRACE_BUFFER_SIZE])
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trace_buffer.tb_ptr = &trace_buffer.tb_buffer[0];
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}
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#endif /* CH_DBG_ENABLE_TRACE */
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#if CH_DBG_ENABLE_ASSERTS || CH_DBG_ENABLE_CHECKS || CH_DBG_ENABLE_STACK_CHECK
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/**
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* @brief Pointer to the panic message.
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* @details This pointer is meant to be accessed through the debugger, it is
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* written once and then the system is halted. This variable can be
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* set to @p NULL if the halt is caused by a stack overflow.
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*/
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char *panic_msg;
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/**
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* @brief Prints a panic message on the console and then halts the system.
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*
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* @param[in] msg the pointer to the panic message string
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*/
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void chDbgPanic(char *msg) {
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panic_msg = msg;
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chSysHalt();
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}
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#endif /* CH_DBG_ENABLE_ASSERTS || CH_DBG_ENABLE_CHECKS || CH_DBG_ENABLE_STACK_CHECK */
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/** @} */
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