Ale*_*ire 2 c multithreading posix pthreads
当我创建一个线程时,我想传递几个参数。所以我在头文件中定义了以下内容:
struct data{
char *palabra;
char *directorio;
FILE *fd;
DIR *diro;
struct dirent *strdir;
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};
在 .c 文件中,我执行以下操作
if (pthread_create ( &thread_id[i], NULL, &hilos_hijos, ??? ) != 0){
perror("Error al crear el hilo. \n");
exit(EXIT_FAILURE);
}
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我如何将所有这些参数传递给线程。我想:
1)首先使用malloc为这个结构分配内存,然后给每个参数一个值:
struct data *info
info = malloc(sizeof(struct data));
info->palabra = ...;
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2)定义
struct data info
info.palabra = ... ;
info.directorio = ...;
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然后,我如何在线程中访问这些参数 void thread_function ( void *arguments){ ??? }
提前致谢
这是一个工作(并且相对较小)的示例:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
/*
* To compile:
* cc thread.c -o thread-test -lpthread
*/
struct info {
char first_name[64];
char last_name[64];
};
void *thread_worker(void *data)
{
int i;
struct info *info = data;
for (i = 0; i < 100; i++) {
printf("Hello, %s %s!\n", info->first_name, info->last_name);
}
}
int main(int argc, char **argv)
{
pthread_t thread_id;
struct info *info = malloc(sizeof(struct info));
strcpy(info->first_name, "Sean");
strcpy(info->last_name, "Bright");
if (pthread_create(&thread_id, NULL, thread_worker, info)) {
fprintf(stderr, "No threads for you.\n");
return 1;
}
pthread_join(thread_id, NULL);
return 0;
}
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