#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif

#include <pthread.h>
#include <dlfcn.h>
#include <iostream>
#include <unistd.h>
#include <sys/syscall.h>


int pthread_mutex_lock(pthread_mutex_t *t) {
    pid_t cur_pid = syscall(__NR_gettid);
    if (cur_pid == (*t).__data.__owner) {
        std::cerr << t << " " << pthread_self() << std::endl;;
        return -1;
    }

    std::cout << t << std::endl;
    int (*original_func)(pthread_mutex_t *t);
    *(void **)(&original_func) = dlsym(RTLD_NEXT, "pthread_mutex_lock");
    return original_func(t);
}

int pthread_mutex_unlock(pthread_mutex_t *t) {
    std::cout << t << std::endl;
    int (*original_func)(pthread_mutex_t *t);
    *(void **)(&original_func) = dlsym(RTLD_NEXT, "pthread_mutex_unlock");
    return original_func(t);
}