如何监控各个线程的资源占用情况？

发布一下 2022年09月20日 06:01 0 0

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大家好，我是杂烩君。

嵌入式Linux开发中，有时候为了定位问题，需要查看某个进程的各个线程的运行情况。

例子

multi_thread.c：

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#define _GNU_SOURCE#include <pthread.h>#include <stdio.h>#include <stdlib.h>#include <unistd.h>// 线程名称最大长度#define APP_THREAD_NAME_MAX_LEN     32// 线程索引typedef enum _app_thread_index{    APP_THREAD_INDEX_TEST0,    APP_THREAD_INDEX_TEST1,    APP_THREAD_INDEX_TEST2,    APP_THREAD_INDEX_TEST3,    APP_THREAD_INDEX_TEST4,    APP_THREAD_INDEX_TEST5,    APP_THREAD_INDEX_MAX}app_thread_index_e;// 线程入口函数指针类型typedef void *(*p_thread_fun)(void *param);// 线程数据表typedef struct _app_thread{    pthread_t thread_handle;    p_thread_fun thread_entry;    char name[APP_THREAD_NAME_MAX_LEN];}app_thread_s;static void *test0_thread_entry(void *param);static void *test1_thread_entry(void *param);static void *test2_thread_entry(void *param);static void *test3_thread_entry(void *param);static void *test4_thread_entry(void *param);static void *test5_thread_entry(void *param);// 线程表app_thread_s s_app_thread_table[APP_THREAD_INDEX_MAX] ={    {0, test0_thread_entry, "test0_thread"},    {0, test1_thread_entry, "test1_thread"},    {0, test2_thread_entry, "test2_thread"},    {0, test3_thread_entry, "test3_thread"},    {0, test4_thread_entry, "test4_thread"},    {0, test5_thread_entry, "test5_thread"}};static void *test0_thread_entry(void *param){    printf("test0_thread running...\n");    while (1)    {        usleep(2 * 1000);    }        return NULL;}static void *test1_thread_entry(void *param){    printf("test1_thread running...\n");    while (1)    {        usleep(2 * 1000);    }        return NULL;}static void *test2_thread_entry(void *param){    printf("test2_thread running...\n");    while (1)    {        usleep(2 * 1000);    }        return NULL;}static void *test3_thread_entry(void *param){    printf("test3_thread running...\n");    while (1)    {        usleep(2 * 1000);    }        return NULL;}static void *test4_thread_entry(void *param){    printf("test4_thread running...\n");    while (1)    {        usleep(2 * 1000);    }        return NULL;}static void *test5_thread_entry(void *param){    printf("test5_thread running...\n");    while (1)    {        usleep(2 * 1000);    }        return NULL;};static int create_all_app_thread(void){    int ret = 0;    for (int i = 0; i < APP_THREAD_INDEX_MAX; i++)    {        ret = pthread_create(&s_app_thread_table[i].thread_handle, NULL, s_app_thread_table[i].thread_entry, NULL);        if (0 != ret)        {            printf("%s thread create error! thread_id = %ld\n", s_app_thread_table[i].name, s_app_thread_table[i].thread_handle);            return ret;        }        else        {            printf("%s thread create success! thread_id = %ld\n", s_app_thread_table[i].name, s_app_thread_table[i].thread_handle);            pthread_setname_np(s_app_thread_table[i].thread_handle, s_app_thread_table[i].name);        }        pthread_detach(s_app_thread_table[i].thread_handle);    }    return ret;}int main(int argc, char **argv){     create_all_app_thread();        while (1)    {        usleep(2 * 1000);    }    return 0;}

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