C 使用多个进程和pthread处理文件

我在进程和线程之间的同步练习中遇到了问题。主进程应该创建Nchild（使它们大致在同一时间启动），这反过来应该创建M线程。现在，这些线程必须写入文件。一段时间后，T主线程应该停止子进程并调用一个函数，该函数将查找哪个进程进行了更多访问。在文件上写什么或者主进程如何决定哪一个写得更多并不重要。 问题是：什么都没有写。该文件已创建，但什么也没有发生，我无法理解为什么。我在这上面浪费了一个下午，但我仍然无法理解到底出了什么问题（尽管我怀疑sigaction，因为我不希望用它来停止子进程）。请帮忙。这是密码

编辑：问题不应该出现在init_file（）或parseOutput（）中，因为它们是教授给我的，经过测试，我保持不变

这里也很常见

#include <errno.h>

#include <stdio.h>

#include <string.h>



// macros for handling errors

#define handle_error_en(en, msg)    do { errno = en; perror(msg); exit(EXIT_FAILURE); } while (0)

#define handle_error(msg)           do { perror(msg); exit(EXIT_FAILURE); } while (0)

#包括
#包括
#包括
//用于处理错误的宏
#在（0）时定义句柄_error_en（en，msg）do{errno=en；perror（msg）；exit（exit_FAILURE）；}
#定义句柄错误（msg）do{perror（msg）；退出（退出失败）；}while（0）

线程函数需要类型为thread\u args\u t的参数，我传递的是NULL。我甚至不知道为什么它从来没有提出分割错误。通过对pthread_create的正确输入，一切正常。

间隔步骤-创建一个创建一个线程的进程。发生了什么？仍然是0次访问，没有任何写下主题，但您可能想知道stdout是行缓冲的。注意，如果printf（）语句包含换行符（\n），则无需调用fflush（）。另外，您似乎调用了fflush（fd），这不是合法的C。您是否使用最大警告级别编译？谢谢您提供的offtopic。我不知道\n导致缓冲区刷新。我删除了fflush（fd）请发布自制头文件的内容：

common.h

[Main] Child 0 accessed file accesses.log 0 times
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[Main] ===> The process that accessed the file most often is 0 (0 accesses)

#include <errno.h>

#include <stdio.h>

#include <string.h>



// macros for handling errors

#define handle_error_en(en, msg)    do { errno = en; perror(msg); exit(EXIT_FAILURE); } while (0)

#define handle_error(msg)           do { perror(msg); exit(EXIT_FAILURE); } while (0)