因此,我正在研究线程项目,并且正在测试我的文件之一,确保结构和字段获得正确的值。我正在运行此功能:

struct ReportQueue {
   sem_t count;
   pthread_mutex_t mutexAdd;
   ReportList *RQList;
};

ReportQueue *RQCreate() {
   ReportQueue *rq;

   printf("RQCreate() called\n");
   rq = calloc(1, sizeof(ReportQueue));
   sem_init(&rq->count, 0, 0);
   pthread_mutex_init(&rq->mutexAdd, NULL);
   rq->RQList = NULL;
   return rq;
}


与此主要:

int main() {
   ReportQueue *rQueue;
   Report report;

   rQueue = RQCreate();
   printf("SemCount: |%d| RQList: |%d| MutexAdd |%d|\n", rQueue->count, rQueue->RQList, rQueue->mutexAdd);
   printf("SemCount: |%d|\n", rQueue->count);
   printf("RQList: |%d|\n", rQueue->RQList);
   printf("MutexAdd: |%d|\n", rQueue->mutexAdd);

   return;
}


我得到以下输出:

RQCreate() called
SemCount: |0| RQList: |128| MutexAdd |0|
SemCount: |0|
RQList: |0|
MutexAdd: |0|


这对我来说毫无意义。 “ RQList”的值不应该根据我如何打印而改变?我究竟做错了什么?

最佳答案

一个可以正常工作的最小示例...这不是答案,但表明一切似乎都很好

+它不适合评论:D

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

struct ReportQueue {
   sem_t count;
   pthread_mutex_t mutexAdd;
   int *RQList;
};

struct ReportQueue *RQCreate() {
   struct ReportQueue *rq;

   printf("RQCreate() called\n");
   rq = calloc(1, sizeof(struct ReportQueue));
   sem_init(&rq->count, 0, 0);
   pthread_mutex_init(&rq->mutexAdd, NULL);
   rq->RQList = NULL;
   return rq;
}

int main() {
   struct ReportQueue *rQueue;

   rQueue = RQCreate();
   printf("SemCount: |%d| RQList: |%d| \n", rQueue->count, (int)rQueue->RQList);
   printf("SemCount: |%d|\n", rQueue->count);
   printf("RQList: |%d|\n", (int)rQueue->RQList);

   return 1;
}

关于c - 奇怪的printf/pthread错误?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/15466367/

10-10 22:34