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126 lines
4.7 KiB
C
126 lines
4.7 KiB
C
/*****************************************************************************
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* file lib/management/thread_monitor.c
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* author Yuliang
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* version 1.0.0
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* date 08-Oct-2021
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* brief This file provides all the thread monitor related operation functions.
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******************************************************************************
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* Attention
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*
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* <h2><center>© COPYRIGHT(c) 2021 LandPower</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of LandPower nor the names of its contributors may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************/
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/* Includes ------------------------------------------------------------------*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "array.h"
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#include "cmd.h"
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#include "thread_monitor.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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#define THREAD_M_SIZE 32
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#define THREAD_LOCK pthread_mutex_lock(&thread_mutex)
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#define THREAD_UNLOCK pthread_mutex_unlock(&thread_mutex)
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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static pthread_mutex_t thread_mutex;
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static array_t *thread_a;
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/* Private function prototypes -----------------------------------------------*/
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extern int pthread_tryjoin_np(pthread_t thread, void **retval);
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/* Internal functions --------------------------------------------------------*/
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CMD(thread_show,
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thread_show_cmd,
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"show thread",
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SHOW_STR
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"thread\n")
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{
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thread_m_t *node = NULL;
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int32_t i = 0;
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for (i = 0; i < thread_a->active; i++)
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{
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if (thread_a->index[i] != NULL)
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{
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node = (thread_m_t*)thread_a->index[i];
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/* 当返回不为EBUSY时说明线程退出或者出错了,但是再次查询又会变为EBUSY,
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所以这里一旦设置为FALSE,就无法再变为TRUE了. */
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if (pthread_tryjoin_np(node->pid, NULL) != EBUSY)
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{
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node->alive = FALSE;
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}
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vty_out(vty, "%-32s %-2d%s", node->name, node->alive, VTY_NEWLINE);
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}
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}
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vty_out(vty, "%s", VTY_NEWLINE);
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return CMD_SUCCESS;
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}
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/* Interface functions -------------------------------------------------------*/
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/* description: 添加需要监控的线程.
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param:
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return: (E_NONE)成功,(其他)失败 */
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int32_t thread_m_add(char *str, pthread_t pid)
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{
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thread_m_t *node = NULL;
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node = XMALLOC(MTYPE_THREAD_MONITOR, sizeof(thread_m_t));
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snprintf(node->name, THREAD_M_NAME_LEN, "%s", str);
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node->pid = pid;
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node->alive = TRUE;
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THREAD_LOCK;
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array_append(thread_a, node, MTYPE_THREAD_MONITOR);
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THREAD_UNLOCK;
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return E_NONE;
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}
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/* description: 线程监控初始化.
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param:
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return: (E_NONE)成功,(其他)失败 */
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int32_t thread_m_init(void)
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{
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/* 初始化线程锁. */
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pthread_mutex_init(&thread_mutex, NULL);
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thread_a = array_init(THREAD_M_SIZE, MTYPE_THREAD_MONITOR);
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cmd_install_element(COMMON_NODE, &thread_show_cmd);
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return E_NONE;
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}
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/************************ (C) COPYRIGHT LandPower ***** END OF FILE ****/
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