d932e0af2a
Usage: 1. CONFIG_FS_PROCFS_MAX_STACK_RECORD > 0, such as 32, 2. add '-finstrument-functions' to CFLAGS for What you want to check stack. 3. mount porcfs 4. cat /proc/<pid>/stack will print backtace & size Signed-off-by: anjiahao <anjiahao@xiaomi.com>
113 lines
3.9 KiB
C
113 lines
3.9 KiB
C
/****************************************************************************
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* sched/instrument/stack_record.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/instrument.h>
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#include <sys/param.h>
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#include "sched/sched.h"
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static void stack_record_enter(FAR void *this_fn, FAR void *call_site,
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FAR void *arg) noinstrument_function
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nooptimiziation_function;
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static void stack_record_leave(FAR void *this_fn, FAR void *call_site,
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FAR void *arg) noinstrument_function
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nooptimiziation_function;
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/****************************************************************************
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* Public Data
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****************************************************************************/
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struct instrument_s g_stack_record =
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{
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.enter = stack_record_enter,
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.leave = stack_record_leave
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: stack_statistics
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****************************************************************************/
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static void stack_record_enter(FAR void *this_fn, FAR void *call_site,
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FAR void *arg)
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{
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FAR struct tcb_s *tcb = running_task();
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FAR void *sp = &tcb;
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size_t i;
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if (tcb == NULL || sp < tcb->stack_base_ptr ||
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sp >= tcb->stack_base_ptr + tcb->adj_stack_size)
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{
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return;
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}
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if (tcb->level < CONFIG_SCHED_STACK_RECORD)
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{
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tcb->stackrecord_sp[tcb->level] = sp;
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tcb->stackrecord_pc[tcb->level++] = this_fn;
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}
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else if (tcb->caller_deepest < ++tcb->level)
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{
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tcb->caller_deepest = tcb->level;
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}
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if (tcb->sp_deepest == NULL || sp < tcb->sp_deepest)
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{
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tcb->level_deepest = MIN(tcb->level, CONFIG_SCHED_STACK_RECORD);
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for (i = 0; i < tcb->level_deepest; i++)
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{
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tcb->stackrecord_pc_deepest[i] = tcb->stackrecord_pc[i];
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tcb->stackrecord_sp_deepest[i] = tcb->stackrecord_sp[i];
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}
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tcb->sp_deepest = sp;
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}
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}
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/****************************************************************************
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* Name: stackrecord_leave
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****************************************************************************/
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static void stack_record_leave(FAR void *this_fn, FAR void *call_site,
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FAR void *arg)
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{
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FAR struct tcb_s *tcb = running_task();
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FAR void *sp = &tcb;
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if (tcb == NULL || tcb->level == 0 || sp < tcb->stack_base_ptr ||
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sp >= tcb->stack_base_ptr + tcb->adj_stack_size)
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{
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return;
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}
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tcb->level--;
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}
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