Question

我在类Worker中编写了p_thread：

class Worker { 
public:
    Worker(int worker_num ,void* (*function)(void*),void * params);
    virtual ~Worker();

private:
    pthread_t thread;
    int worker_num;
};

Worker::Worker(int worker_num, void* (*function)(void*), void * params) {
    pthread_create(&thread, NULL, function, (void *) params);
    logger.log(DEBUG_LEVEL_DEBUG, "Worker id=%u was created\n", worker_num);
    this->worker_num = worker_num;
    return;
}

Worker::~Worker() {
    pthread_cancel(thread);
    logger.log(DEBUG_LEVEL_DEBUG, "Worker id=%u was canceled\n", worker_num);
    return;
}

我在另一个类THREAD_POOL的构造函数上创建了一个worker向量：

for (int i = 0; i < worker_num; i++) {
    this->workers.push_back(new Worker(i, thread_exe, ((void*) this)));
}

（函数thread_exe是无限循环）。当我试图在THREAD_POOL类的destroctor上销毁那些工人时，如下：

ThreadPool::~ThreadPool() {

    for(int worker_index = 0 ; worker_index < workers.size();worker_index++){
        delete workers[worker_index];
    }

我的程序崩溃了：

工人ID = 0被取消   检测到 * glibc * /.autodirect/fwgwork/yehudas/workspace/dt_utils/code_coverage/Debug/fcollect：   double free或corruption（out）：0x0000000000629590 *   ======= Backtrace：========= / lib64 / libc.so.6 [0x3300476166] /lib64/libc.so.6[0x3300478c93]   /.autodirect/fwgwork/yehudas/workspace/dt_utils/code_coverage/Debug/fcollect[0x413ae2]   /.autodirect/fwgwork/yehudas/workspace/dt_utils/code_coverage/Debug/fcollect[0x412a04]   /.autodirect/fwgwork/yehudas/workspace/dt_utils/code_coverage/Debug/fcollect[0x412b70]   /.autodirect/fwgwork/yehudas/workspace/dt_utils/code_coverage/Debug/fcollect[0x40e527]   /.autodirect/fwgwork/yehudas/workspace/dt_utils/code_coverage/Debug/fcollect[0x4083fe]   /lib64/libc.so.6(__libc_start_main+0xfd)[0x330041ed1d]   /.autodirect/fwgwork/yehudas/workspace/dt_utils/code_coverage/Debug/fcollect[0x403a69]   =======记忆图：======== 00400000-00426000 r-xp 00000000 00:21 19570593
  /.autodirect/fwgwork/yehudas/workspace/dt_utils/code_coverage/Debug/fcollect   00625000-00626000 rw-p 00025000 00:21 19570593
  /.autodirect/fwgwork/yehudas/workspace/dt_utils/code_coverage/Debug/fcollect   00626000-00648000 rw-p 00000000 00:00 0
  [堆] 32ffc00000-32ffc20000 r-xp 00000000 fc：01 670751
  /lib64/ld-2.12.so 32ffe1f000-32ffe20000 r - p 0001f000 fc：01 670751
  /lib64/ld-2.12.so 32ffe20000-32ffe21000 rw-p 00020000 fc：01 670751
  /lib64/ld-2.12.so 32ffe21000-32ffe22000 rw-p 00000000 00:00 0   3300000000-3300083000 r-xp 00000000 fc：01 670759
  /lib64/libm-2.12.so 3300083000-3300282000 --- p 00083000 fc：01 670759
  /lib64/libm-2.12.so 3300282000-3300283000 r - p 00082000 fc：01 670759
  /lib64/libm-2.12.so 3300283000-3300284000 rw-p 00083000 fc：01 670759
  /lib64/libm-2.12.so 3300400000-330058b000 r-xp 00000000 fc：01 670752
  /lib64/libc-2.12.so 330058b000-330078a000 --- p 0018b000 fc：01 670752
  /lib64/libc-2.12.so 330078a000-330078e000 r - p 0018a000 fc：01 670752
  /lib64/libc-2.12.so 330078e000-330078f000 rw-p 0018e000 fc：01 670752
  /lib64/libc-2.12.so 330078f000-3300794000 rw-p 00000000 00:00 0   3300800000-3300802000 r-xp 00000000 fc：01 670755
  /lib64/libdl-2.12.so 3300802000-3300a02000 --- p 00002000 fc：01 670755   /lib64/libdl-2.12.so 3300a02000-3300a03000 r - p 00002000 fc：01 670755   /lib64/libdl-2.12.so 3300a03000-3300a04000 rw-p 00003000 fc：01 670755   /lib64/libdl-2.12.so 3300c00000-3300c17000 r-xp 00000000 fc：01 670753   /lib64/libpthread-2.12.so 3300c17000-3300e17000 --- p 00017000 fc：01   670753 /lib64/libpthread-2.12.so   3300e17000-3300e18000 r - p 00017000 fc：01 670753
  /lib64/libpthread-2.12.so 3300e18000-3300e19000 rw-p 00018000 fc：01   670753 /lib64/libpthread-2.12.so   3300e19000-3300e1d000 rw-p 00000000 00:00 0 3303c00000-3303c16000   r-xp 00000000 fc：01 670760
  /lib64/libgcc_s-4.4.7-20120601.so.1 3303c16000-3303e15000 --- p   00016000 fc：01 670760
  /lib64/libgcc_s-4.4.7-20120601.so.1 3303e15000-3303e16000 rw-p   00015000 fc：01 670760
  /lib64/libgcc_s-4.4.7-20120601.so.1 3304800000-33048e8000 r-xp   00000000 fc：01 918134
  /usr/lib64/libstdc++.so.6.0.13 33048e8000-3304ae8000 --- p 000e8000   fc：01 918134 /usr/lib64/libstdc++.so.6.0.13   3304ae8000-3304aef000 r - p 000e8000 fc：01 918134
  /usr/lib64/libstdc++.so.6.0.13 3304aef000-3304af1000 rw-p 000ef000   fc：01 918134 /usr/lib64/libstdc++.so.6.0.13   3304af1000-3304b06000 rw-p 00000000 00:00 0 7fffe8000000-7fffe8021000   rw-p 00000000 00:00 0 7fffe8021000-7fffec000000 --- p 00000000 00:00 0   7ffff0000000-7ffff0021000 rw-p 00000000 00:00 0   7ffff0021000-7ffff4000000 --- p 00000000 00:00 0   7ffff6bdb000-7ffff6bdc000 --- p 00000000 00:00 0   7ffff6bdc000-7ffff75dc000 rw-p 00000000 00:00 0   7ffff75dc000-7ffff75dd000 --- p 00000000 00:00 0   7ffff75dd000-7ffff7fe3000 rw-p 00000000 00:00 0   7ffff7ffa000-7ffff7ffe000 rw-p 00000000 00:00 0   7ffff7ffe000-7ffff7fff000 r-xp 00000000 00:00 0
  [vdso] 7ffffffe9000-7ffffffff000 rw-p 00000000 00:00 0
  [stack] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0
  [vsyscall]

需要建议...

Answer 1

你忘了增加循环计数器（++ worker_index）

ThreadPool::~ThreadPool() {

for(int worker_index = 0 ; worker_index < workers.size(); ++worker_index){
    delete workers[worker_index];
}

破坏线程分段故障向量

1 个答案: