apps/system/critmon: Add a daemon on monitor critical sections.
This commit is contained in:
parent
e88a529010
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943abb19d2
11
system/critmon/.gitignore
vendored
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11
system/critmon/.gitignore
vendored
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@ -0,0 +1,11 @@
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/Make.dep
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/.depend
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/.built
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/*.asm
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/*.rel
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/*.lst
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/*.sym
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/*.adb
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/*.lib
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/*.src
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/*.obj
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42
system/critmon/Kconfig
Normal file
42
system/critmon/Kconfig
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#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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menuconfig SYSTEM_CRITMONITOR
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tristate "Critcal Section Monitor"
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default n
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depends on FS_PROCFS && !_FS_PROCFS_EXCLUDE_PROCESS && SCHED_CRITMONITOR
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---help---
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If the critical section monitor is enabled (CONFIGSCHED_CRITMONITOR)
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this option will enable a critical section monitor daemon. This daemon
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that will periodically assess usage of critical sections by all tasks
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and threads in the system.
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if SYSTEM_CRITMONITOR
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config SYSTEM_CRITMONITOR_STACKSIZE
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int "Stack monitor daemon stack size"
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default 2048
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---help---
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The stack size to use the stack monitor daemon. Default: 2048
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config SYSTEM_CRITMONITOR_PRIORITY
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int "Stack monitor daemon priority"
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default 50
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---help---
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The priority to use the stack monitor daemon. Default: 50
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config SYSTEM_CRITMONITOR_INTERVAL
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int "Stack monitor dump frequency"
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default 2
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---help---
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The rate in seconds that the stack monitor will wait before dumping
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the next set stack usage information. Default: 2 seconds.
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config SYSTEM_CRITMONITOR_MOUNTPOINT
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string "procfs mountpoint"
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default "/proc"
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endif
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39
system/critmon/Make.defs
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39
system/critmon/Make.defs
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@ -0,0 +1,39 @@
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############################################################################
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# apps/system/critmon/Make.defs
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# Adds selected applications to apps/ build
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#
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# Copyright (C) 2018 Gregory Nutt. All rights reserved.
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# Author: Gregory Nutt <gnutt@nuttx.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name NuttX nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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############################################################################
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ifneq ($(CONFIG_SYSTEM_CRITMONITOR),)
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CONFIGURED_APPS += system/critmon
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endif
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52
system/critmon/Makefile
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52
system/critmon/Makefile
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############################################################################
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# apps/system/critmon/Makefile
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#
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# Copyright (C) 2018 Gregory Nutt. All rights reserved.
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# Author: Gregory Nutt <gnutt@nuttx.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name NuttX nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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############################################################################
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-include $(TOPDIR)/Make.defs
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# Stack Monitor Application
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PRIORITY = SCHED_PRIORITY_DEFAULT
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STACKSIZE = 2048
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MAINSRC = critmon.c
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CONFIG_XYZ_PROGNAME ?= critmon$(EXEEXT)
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PROGNAME = $(CONFIG_XYZ_PROGNAME)
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APPNAME = critmon_start critmon_stop
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MODULE = CONFIG_SYSTEM_CRITMONITOR
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include $(APPDIR)/Application.mk
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534
system/critmon/critmon.c
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534
system/critmon/critmon.c
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/****************************************************************************
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* apps/system/critmon/critmon.c
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*
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* Copyright (C) 2013, 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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/config.h>
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#include <sys/types.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <fcntl.h>
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#include <dirent.h>
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#include <sched.h>
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#include <syslog.h>
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#include <errno.h>
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#ifdef CONFIG_SYSTEM_CRITMONITOR
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifndef CONFIG_SYSTEM_CRITMONITOR_STACKSIZE
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# define CONFIG_SYSTEM_CRITMONITOR_STACKSIZE 2048
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#endif
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#ifndef CONFIG_SYSTEM_CRITMONITOR_PRIORITY
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# define CONFIG_SYSTEM_CRITMONITOR_PRIORITY 50
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#endif
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#ifndef CONFIG_SYSTEM_CRITMONITOR_INTERVAL
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# define CONFIG_SYSTEM_CRITMONITOR_INTERVAL 2
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#endif
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#ifndef CONFIG_SYSTEM_CRITMONITOR_MOUNTPOINT
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# define CONFIG_SYSTEM_CRITMONITOR_MOUNTPOINT "/proc"
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#endif
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct critmon_state_s
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{
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volatile bool started;
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volatile bool stop;
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pid_t pid;
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char line[80];
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};
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static struct critmon_state_s g_critmon;
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#if CONFIG_TASK_NAME_SIZE > 0
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static const char g_name[] = "Name:";
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: critmon_isolate_value
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****************************************************************************/
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static FAR char *critmon_isolate_value(FAR char *line)
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{
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FAR char *ptr;
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while (isblank(*line) && *line != '\0')
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{
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line++;
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}
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ptr = line;
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while (*ptr != '\n' && *ptr != '\r' && *ptr != '\0')
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{
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ptr++;
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}
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*ptr = '\0';
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return line;
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}
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/****************************************************************************
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* Name: critmon_process_directory
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****************************************************************************/
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static int critmon_process_directory(FAR struct dirent *entryp)
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{
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FAR const char *tmpstr;
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FAR char *filepath;
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FAR char *maxpreemp;
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FAR char *maxcrit;
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FILE *stream;
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int errcode;
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int len;
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int ret;
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#if CONFIG_TASK_NAME_SIZE > 0
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FAR char *name = NULL;
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/* Read the task status to get the task name */
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filepath = NULL;
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ret = asprintf(&filepath, CONFIG_SYSTEM_CRITMONITOR_MOUNTPOINT "/%s/status",
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entryp->d_name);
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if (ret < 0 || filepath == NULL)
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{
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errcode = errno;
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fprintf(stderr, "Csection Monitor: Failed to create path to status file: %d\n",
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errcode);
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return -errcode;
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}
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/* Open the status file */
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stream = fopen(filepath, "r");
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if (stream == NULL)
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{
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ret = -errno;
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fprintf(stderr, "Csection Monitor: Failed to open %s: %d\n",
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filepath, ret);
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goto errout_with_filepath;
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}
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while (fgets(g_critmon.line, 80, stream) != NULL)
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{
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g_critmon.line[79] = '\n';
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len = strlen(g_name);
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if (strncmp(g_critmon.line, g_name, len) == 0)
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{
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tmpstr = critmon_isolate_value(&g_critmon.line[len]);
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if (*tmpstr == '\0')
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{
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ret = -EINVAL;
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goto errout_with_stream;
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}
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name = strdup(tmpstr);
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if (name == NULL)
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{
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ret = -EINVAL;
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goto errout_with_stream;
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}
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}
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}
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free(filepath);
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fclose(stream);
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#endif
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/* Read critical section information */
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filepath = NULL;
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ret = asprintf(&filepath, CONFIG_SYSTEM_CRITMONITOR_MOUNTPOINT "/%s/critmon",
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entryp->d_name);
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if (ret < 0 || filepath == NULL)
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{
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errcode = errno;
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fprintf(stderr, "Csection Monitor: Failed to create path to Csection file: %d\n",
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errcode);
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ret = -EINVAL;
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goto errout_with_name;
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}
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/* Open the Csection file */
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stream = fopen(filepath, "r");
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if (stream == NULL)
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{
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ret = -errno;
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fprintf(stderr, "Csection Monitor: Failed to open %s: %d\n",
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filepath, ret);
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goto errout_with_filepath;
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}
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/* Read the line containing the Csection max durations */
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if (fgets(g_critmon.line, 80, stream) == NULL)
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{
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ret = -errno;
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fprintf(stderr, "Csection Monitor: Failed to read from %s: %d\n",
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filepath, ret);
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goto errout_with_filepath;
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}
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/* Format: X.XXXXXXXXXXXX,X.XXXXXXXXX */
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maxpreemp = g_critmon.line;
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maxcrit = strchr(g_critmon.line, ',');
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if (maxcrit != NULL)
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{
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*maxcrit++ = '\0';
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}
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else
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{
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maxcrit = "None";
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}
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/* Finally, output the stack info that we gleaned from the procfs */
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#if CONFIG_TASK_NAME_SIZE > 0
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printf("Thread %s (ID %s):\n", name, entryp->d_name);
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#else
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printf("Thread ID %s:\n", entryp->d_name);
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#endif
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printf(" Max Pre-emption Disable: %s%12s\n", maxpreemp);
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printf(" Max Critical Section: %s%12s\n", maxcrit);
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ret = OK;
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errout_with_stream:
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fclose(stream);
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errout_with_filepath:
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free(filepath);
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errout_with_name:
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#if CONFIG_TASK_NAME_SIZE > 0
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if (name != NULL)
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{
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free(name);
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}
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#endif
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return ret;
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}
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/****************************************************************************
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* Name: critmon_check_name
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****************************************************************************/
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static bool critmon_check_name(FAR char *name)
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{
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int i;
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/* Check each character in the name */
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for (i = 0; i < NAME_MAX && name[i] != '\0'; i++)
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{
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if (!isdigit(name[i]))
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{
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/* Name contains something other than a decimal numeric character */
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return false;
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}
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}
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return true;
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}
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/****************************************************************************
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* Name: critmon_global_crit
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****************************************************************************/
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static void critmon_global_crit(void)
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{
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FAR char *filepath;
|
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FAR char *cpu;
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FAR char *maxpreemp;
|
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FAR char *maxcrit;
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FILE *stream;
|
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int errcode;
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int ret;
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/* Read critical section information */
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filepath = NULL;
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ret = asprintf(&filepath, CONFIG_SYSTEM_CRITMONITOR_MOUNTPOINT "critmon");
|
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if (ret < 0 || filepath == NULL)
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{
|
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errcode = errno;
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fprintf(stderr, "Csection Monitor: Failed to create path to Csection file: %d\n",
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errcode);
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return;
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}
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/* Open the Csection file */
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stream = fopen(filepath, "r");
|
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if (stream == NULL)
|
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{
|
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errcode = errno;
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fprintf(stderr, "Csection Monitor: Failed to open %s: %d\n",
|
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filepath, errcode);
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goto errout_with_filepath;
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}
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/* Read the line containing the Csection max durations for each CPU */
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while (fgets(g_critmon.line, 80, stream) != NULL)
|
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{
|
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/* Format: X,X.XXXXXXXXXXXX,X.XXXXXXXXX */
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|
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cpu = g_critmon.line;
|
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maxpreemp = strchr(g_critmon.line, ',');
|
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|
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if (maxpreemp != NULL)
|
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{
|
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*maxpreemp++ = '\0';
|
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maxcrit = strchr(g_critmon.line, ',');
|
||||
if (maxcrit != NULL)
|
||||
{
|
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*maxcrit++ = '\0';
|
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}
|
||||
else
|
||||
{
|
||||
maxcrit = "None";
|
||||
}
|
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}
|
||||
else
|
||||
{
|
||||
maxpreemp = "None";
|
||||
maxcrit = "None";
|
||||
}
|
||||
|
||||
/* Finally, output the stack info that we gleaned from the procfs */
|
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|
||||
printf("CPU %s:\n", cpu);
|
||||
printf(" Max Pre-emption Disable: %s%12s\n", maxpreemp);
|
||||
printf(" Max Critical Section: %s%12s\n", maxcrit);
|
||||
}
|
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|
||||
fclose(stream);
|
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|
||||
errout_with_filepath:
|
||||
free(filepath);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: critmon_daemon
|
||||
****************************************************************************/
|
||||
|
||||
static int critmon_daemon(int argc, char **argv)
|
||||
{
|
||||
DIR *dirp;
|
||||
int exitcode = EXIT_SUCCESS;
|
||||
int errcount = 0;
|
||||
int ret;
|
||||
|
||||
printf("Csection Monitor: Running: %d\n", g_critmon.pid);
|
||||
|
||||
/* Loop until we detect that there is a request to stop. */
|
||||
|
||||
while (!g_critmon.stop)
|
||||
{
|
||||
/* Wait for the next sample interval */
|
||||
|
||||
sleep(CONFIG_SYSTEM_CRITMONITOR_INTERVAL);
|
||||
|
||||
/* Should global usage first */
|
||||
|
||||
critmon_global_crit();
|
||||
|
||||
/* Open the top-level procfs directory */
|
||||
|
||||
dirp = opendir(CONFIG_SYSTEM_CRITMONITOR_MOUNTPOINT);
|
||||
if (dirp == NULL)
|
||||
{
|
||||
/* Failed to open the directory */
|
||||
|
||||
fprintf(stderr, "Csection Monitor: Failed to open directory: %s\n",
|
||||
CONFIG_SYSTEM_CRITMONITOR_MOUNTPOINT);
|
||||
|
||||
if (++errcount > 100)
|
||||
{
|
||||
fprintf(stderr, "Csection Monitor: Too many errors ... exiting\n");
|
||||
exitcode = EXIT_FAILURE;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Read each directory entry */
|
||||
|
||||
for (; ; )
|
||||
{
|
||||
FAR struct dirent *entryp = readdir(dirp);
|
||||
if (entryp == NULL)
|
||||
{
|
||||
/* Finished with this directory */
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
/* Task/thread entries in the /proc directory will all be (1)
|
||||
* directories with (2) all numeric names.
|
||||
*/
|
||||
|
||||
if (DIRENT_ISDIRECTORY(entryp->d_type) &&
|
||||
critmon_check_name(entryp->d_name))
|
||||
{
|
||||
/* Looks good -- process the directory */
|
||||
|
||||
ret = critmon_process_directory(entryp);
|
||||
if (ret < 0)
|
||||
{
|
||||
/* Failed to process the thread directory */
|
||||
|
||||
fprintf(stderr,
|
||||
"Csection Monitor: Failed to process sub-directory: %s\n",
|
||||
entryp->d_name);
|
||||
|
||||
if (++errcount > 100)
|
||||
{
|
||||
fprintf(stderr, "Csection Monitor: Too many errors ... exiting\n");
|
||||
exitcode = EXIT_FAILURE;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
closedir(dirp);
|
||||
}
|
||||
|
||||
/* Stopped */
|
||||
|
||||
g_critmon.stop = false;
|
||||
g_critmon.started = false;
|
||||
printf("Csection Monitor: Stopped: %d\n", g_critmon.pid);
|
||||
|
||||
return exitcode;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
int critmon_start_main(int argc, char **argv)
|
||||
{
|
||||
/* Has the monitor already started? */
|
||||
|
||||
sched_lock();
|
||||
if (!g_critmon.started)
|
||||
{
|
||||
int ret;
|
||||
|
||||
/* No.. start it now */
|
||||
|
||||
/* Then start the stack monitoring daemon */
|
||||
|
||||
g_critmon.started = true;
|
||||
g_critmon.stop = false;
|
||||
|
||||
ret = task_create("Csection Monitor", CONFIG_SYSTEM_CRITMONITOR_PRIORITY,
|
||||
CONFIG_SYSTEM_CRITMONITOR_STACKSIZE,
|
||||
(main_t)critmon_daemon, (FAR char * const *)NULL);
|
||||
if (ret < 0)
|
||||
{
|
||||
int errcode = errno;
|
||||
printf("Csection Monitor ERROR: Failed to start the stack monitor: %d\n",
|
||||
errcode);
|
||||
}
|
||||
else
|
||||
{
|
||||
g_critmon.pid = ret;
|
||||
printf("Csection Monitor: Started: %d\n", g_critmon.pid);
|
||||
}
|
||||
|
||||
sched_unlock();
|
||||
return 0;
|
||||
}
|
||||
|
||||
sched_unlock();
|
||||
printf("Csection Monitor: %s: %d\n",
|
||||
g_critmon.stop ? "Stopping" : "Running", g_critmon.pid);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int critmon_stop_main(int argc, char **argv)
|
||||
{
|
||||
/* Has the monitor already started? */
|
||||
|
||||
if (g_critmon.started)
|
||||
{
|
||||
/* Stop the stack monitor. The next time the monitor wakes up,
|
||||
* it will see the stop indication and will exist.
|
||||
*/
|
||||
|
||||
printf("Csection Monitor: Stopping: %d\n", g_critmon.pid);
|
||||
g_critmon.stop = true;
|
||||
}
|
||||
|
||||
printf("Csection Monitor: Stopped: %d\n", g_critmon.pid);
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif /* CONFIG_SYSTEM_CRITMONITOR */
|
@ -42,7 +42,7 @@ STACKSIZE = 2048
|
||||
|
||||
MAINSRC = stackmonitor.c
|
||||
|
||||
CONFIG_XYZ_PROGNAME ?= ramtest$(EXEEXT)
|
||||
CONFIG_XYZ_PROGNAME ?= stackmon$(EXEEXT)
|
||||
PROGNAME = $(CONFIG_XYZ_PROGNAME)
|
||||
|
||||
APPNAME = stackmonitor_start stackmonitor_stop
|
||||
|
Loading…
x
Reference in New Issue
Block a user