linux 查看进程死锁

pstack <pid>

gdb -p <pid>

info threads
thread apply all bt

strace -p <pid>

top

htop

vmstat 1

iostat -x 1

smem -P <process_name>

valgrind --tool=memcheck --leak-check=full <program>

perf record -g -p <pid> sleep 10
perf report

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>

pthread_mutex_t mutex1 = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t mutex2 = PTHREAD_MUTEX_INITIALIZER;

void* thread1(void* arg) {
    pthread_mutex_lock(&mutex1);
    printf("Thread 1 acquired mutex1
");
    sleep(1);
    pthread_mutex_lock(&mutex2);
    printf("Thread 1 acquired mutex2
");
    pthread_mutex_unlock(&mutex2);
    pthread_mutex_unlock(&mutex1);
    return NULL;
}

void* thread2(void* arg) {
    pthread_mutex_lock(&mutex1); // 修改为先获取mutex1，避免死锁
    printf("Thread 2 acquired mutex1
");
    sleep(1);
    pthread_mutex_lock(&mutex2);
    printf("Thread 2 acquired mutex2
");
    pthread_mutex_unlock(&mutex2);
    pthread_mutex_unlock(&mutex1);
    return NULL;
}

int main() {
    pthread_t t1, t2;
    pthread_create(&t1, NULL, thread1, NULL);
    pthread_create(&t2, NULL, thread2, NULL);
    pthread_join(t1, NULL);
    pthread_join(t2, NULL);
    return 0;
}