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/*
ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio.
This file is part of ChibiOS.
ChibiOS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file chtrace.c
* @brief Tracer code.
*
* @addtogroup trace
* @details System events tracing service.
* @{
*/
#include "ch.h"
/*===========================================================================*/
/* Module local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Module exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Module local types. */
/*===========================================================================*/
/*===========================================================================*/
/* Module local variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Module local functions. */
/*===========================================================================*/
#if (CH_DBG_TRACE_MASK != CH_DBG_TRACE_MASK_DISABLED) || defined(__DOXYGEN__)
/**
* @brief Writes a time stamp and increases the trace buffer pointer.
*
* @notapi
*/
static NOINLINE void trace_next(void) {
ch.dbg.trace_buffer.ptr->time = chVTGetSystemTimeX();
#if PORT_SUPPORTS_RT == TRUE
ch.dbg.trace_buffer.ptr->rtstamp = chSysGetRealtimeCounterX();
#else
ch.dbg.trace_buffer.ptr->rtstamp = (rtcnt_t)0;
#endif
/* Trace hook, useful in order to interface debug tools.*/
CH_CFG_TRACE_HOOK(ch.dbg.trace_buffer.ptr);
if (++ch.dbg.trace_buffer.ptr >=
&ch.dbg.trace_buffer.buffer[CH_DBG_TRACE_BUFFER_SIZE]) {
ch.dbg.trace_buffer.ptr = &ch.dbg.trace_buffer.buffer[0];
}
}
#endif
/*===========================================================================*/
/* Module exported functions. */
/*===========================================================================*/
#if (CH_DBG_TRACE_MASK != CH_DBG_TRACE_MASK_DISABLED) || defined(__DOXYGEN__)
/**
* @brief Trace circular buffer subsystem initialization.
* @note Internal use only.
*/
void _trace_init(void) {
unsigned i;
ch.dbg.trace_buffer.suspended = (uint16_t)~CH_DBG_TRACE_MASK;
ch.dbg.trace_buffer.size = CH_DBG_TRACE_BUFFER_SIZE;
ch.dbg.trace_buffer.ptr = &ch.dbg.trace_buffer.buffer[0];
for (i = 0U; i < (unsigned)CH_DBG_TRACE_BUFFER_SIZE; i++) {
ch.dbg.trace_buffer.buffer[i].type = CH_TRACE_TYPE_UNUSED;
}
}
/**
* @brief Inserts in the circular debug trace buffer a context switch record.
*
* @param[in] ntp the thread being switched in
* @param[in] otp the thread being switched out
*
* @notapi
*/
void _trace_switch(thread_t *ntp, thread_t *otp) {
(void)ntp;
if ((ch.dbg.trace_buffer.suspended & CH_DBG_TRACE_MASK_SWITCH) == 0U) {
ch.dbg.trace_buffer.ptr->type = CH_TRACE_TYPE_SWITCH;
ch.dbg.trace_buffer.ptr->state = (uint8_t)otp->state;
ch.dbg.trace_buffer.ptr->u.sw.ntp = currp;
ch.dbg.trace_buffer.ptr->u.sw.wtobjp = otp->u.wtobjp;
trace_next();
}
}
/**
* @brief Inserts in the circular debug trace buffer an ISR-enter record.
*
* @param[in] isr name of the isr
*
* @notapi
*/
void _trace_isr_enter(const char *isr) {
if ((ch.dbg.trace_buffer.suspended & CH_DBG_TRACE_MASK_ISR) == 0U) {
port_lock_from_isr();
ch.dbg.trace_buffer.ptr->type = CH_TRACE_TYPE_ISR_ENTER;
ch.dbg.trace_buffer.ptr->state = 0U;
ch.dbg.trace_buffer.ptr->u.isr.name = isr;
trace_next();
port_unlock_from_isr();
}
}
/**
* @brief Inserts in the circular debug trace buffer an ISR-leave record.
*
* @param[in] isr name of the isr
*
* @notapi
*/
void _trace_isr_leave(const char *isr) {
if ((ch.dbg.trace_buffer.suspended & CH_DBG_TRACE_MASK_ISR) == 0U) {
port_lock_from_isr();
ch.dbg.trace_buffer.ptr->type = CH_TRACE_TYPE_ISR_LEAVE;
ch.dbg.trace_buffer.ptr->state = 0U;
ch.dbg.trace_buffer.ptr->u.isr.name = isr;
trace_next();
port_unlock_from_isr();
}
}
/**
* @brief Inserts in the circular debug trace buffer an halt record.
*
* @param[in] reason the halt error string
*
* @notapi
*/
void _trace_halt(const char *reason) {
if ((ch.dbg.trace_buffer.suspended & CH_DBG_TRACE_MASK_HALT) == 0U) {
ch.dbg.trace_buffer.ptr->type = CH_TRACE_TYPE_HALT;
ch.dbg.trace_buffer.ptr->state = 0;
ch.dbg.trace_buffer.ptr->u.halt.reason = reason;
trace_next();
}
}
/**
* @brief Adds an user trace record to the trace buffer.
*
* @param[in] up1 user parameter 1
* @param[in] up2 user parameter 2
*
* @iclass
*/
void chDbgWriteTraceI(void *up1, void *up2) {
chDbgCheckClassI();
if ((ch.dbg.trace_buffer.suspended & CH_DBG_TRACE_MASK_USER) == 0U) {
ch.dbg.trace_buffer.ptr->type = CH_TRACE_TYPE_USER;
ch.dbg.trace_buffer.ptr->state = 0;
ch.dbg.trace_buffer.ptr->u.user.up1 = up1;
ch.dbg.trace_buffer.ptr->u.user.up2 = up2;
trace_next();
}
}
/**
* @brief Adds an user trace record to the trace buffer.
*
* @param[in] up1 user parameter 1
* @param[in] up2 user parameter 2
*
* @api
*/
void chDbgWriteTrace(void *up1, void *up2) {
chSysLock();
chDbgWriteTraceI(up1, up2);
chSysUnlock();
}
/**
* @brief Suspends one or more trace events.
*
* @param[in] mask mask of the trace events to be suspended
*
* @iclass
*/
void chDbgSuspendTraceI(uint16_t mask) {
chDbgCheckClassI();
ch.dbg.trace_buffer.suspended |= mask;
}
/**
* @brief Suspends one or more trace events.
*
* @param[in] mask mask of the trace events to be suspended
*
* @api
*/
void chDbgSuspendTrace(uint16_t mask) {
chSysLock();
chDbgSuspendTraceI(mask);
chSysUnlock();
}
/**
* @brief Resumes one or more trace events.
*
* @param[in] mask mask of the trace events to be resumed
*
* @iclass
*/
void chDbgResumeTraceI(uint16_t mask) {
chDbgCheckClassI();
ch.dbg.trace_buffer.suspended &= ~mask;
}
/**
* @brief Resumes one or more trace events.
*
* @param[in] mask mask of the trace events to be resumed
*
* @api
*/
void chDbgResumeTrace(uint16_t mask) {
chSysLock();
chDbgResumeTraceI(mask);
chSysUnlock();
}
#endif /* CH_DBG_TRACE_MASK != CH_DBG_TRACE_MASK_DISABLED */
/** @} */
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