我試圖編譯並運行C Linux
中使用Detached Threads
的以下代碼。事情是,我希望每一個線程都能從處理器*idThreadMethod
向我展示相應的printf
,並且它不會顯示任何東西!在撥打pthread_create
函數之前,我嘗試使用printf
,它顯示它,但問題應該在*idThreadMethod
(處理函數)中。代碼:分離主題:處理程序未顯示Printfs
//gcc detachedThreads.c -lpthread -o p
//./p 4
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
int i;
void *idThreadMethod(void *args)
{
int pid;
pid = *((int *)args);
printf("\nI'm The Detached Thread %d\n", i);
printf("\nMy PID is: %d\n", pid);
pthread_exit(NULL);
}
int main(int argc, char *argv[])
{
int quantityThreads, returnThread, pid;
pthread_t idThread[15];
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr,PTHREAD_CREATE_DETACHED);
if(argc-1 < 1)
{
printf("\nSome arguments are missing\n");
return EXIT_FAILURE;
}
quantityThreads = atoi(argv[1]);
pid=getpid();
int *it = &pid;
for(i=0;i<quantityThreads;i++)
{
returnThread = pthread_create(&idThread[i],&attr,idThreadMethod,it);
if(returnThread == -1)
{
printf("\nThere is an error trying to create the thread\n");
return EXIT_FAILURE;
}
}
return EXIT_SUCCESS;
}
我可以爲了顯示從*idThreadMethod
功能printf
信息做什麼?