vs调试linux多线程,在vs2013中运行linux下的多线程出现的问题-优快云博客

[C] 纯文本查看复制代码#define _CRT_SECURE_NO_WARNINGS

#include

#pragma comment(lib,"pthreadVC2.lib") //必不可少，这是告诉编译器在编译形成的.obj文件和.exe文件中加一条信息，使得链接器在链接库的时候要去找pthreadVC2.lib这个库，不要先去找别的库。(.exe文件找DLL 也是这种写法，例如 pthreadVC2.dll)[color=#ff0000]通过设置和加上这句可以在vs中运行linux中的代码[/color]

//线程优先级调度

#if 1

static int api_get_thread_policy(pthread_attr_t *attr)

{

int policy;

int rs = pthread_attr_getschedpolicy(attr, &policy);

assert(rs == 0);

switch (policy)

{

case SCHED_FIFO:

printf("policy = SCHED_FIFO\n");

break;

case SCHED_RR:

printf("policy = SCHED_RR");

break;

case SCHED_OTHER:

printf("policy = SCHED_OTHER\n");

break;

default:

printf("policy = UNKNOWN\n");

break;

}

return policy;

}

static void api_show_thread_priority(pthread_attr_t *attr, int policy)

{

int priority = sched_get_priority_max(policy);

assert(priority != -1);

printf("max_priority = %d\n", priority);

priority = sched_get_priority_min(policy);

assert(priority != -1);

printf("min_priority = %d\n", priority);

}

static int api_get_thread_priority(pthread_attr_t *attr)

{

struct sched_param param;

int rs = pthread_attr_getschedparam(attr, ¶m);

assert(rs == 0);

printf("priority = %d\n", param.sched_priority);

return param.sched_priority;

}

static void api_set_thread_policy(pthread_attr_t *attr, int policy)

{

int rs = pthread_attr_setschedpolicy(attr, policy);

assert(rs == 0);

api_get_thread_policy(attr);

}

int main(void)

{

pthread_attr_t attr; // 线程属性

struct sched_param sched; // 调度策略

int rs;

* 对线程属性初始化

* 初始化完成以后，pthread_attr_t 结构所包含的结构体

* 就是操作系统实现支持的所有线程属性的默认值

rs = pthread_attr_init(&attr);

assert(rs == 0); // 如果 rs 不等于 0，程序 abort() 退出

/* 获得当前调度策略 */

int policy = api_get_thread_policy(&attr);

/* 显示当前调度策略的线程优先级范围 */

printf("Show current configuration of priority\n");

api_show_thread_priority(&attr, policy);

/* 获取 SCHED_FIFO 策略下的线程优先级范围 */

printf("show SCHED_FIFO of priority\n");

api_show_thread_priority(&attr, SCHED_FIFO);

/* 获取 SCHED_RR 策略下的线程优先级范围 */

printf("show SCHED_RR of priority\n");

api_show_thread_priority(&attr, SCHED_RR);

/* 显示当前线程的优先级 */

printf("show priority of current thread\n");

int priority = api_get_thread_priority(&attr);

/* 手动设置调度策略 */

printf("Set thread policy\n");

printf("set SCHED_FIFO policy\n"); //[color=#ff0000]SCHED_RR 或 SCHED_FIFO 策略需要使用 sudo 权限运行程序，不知道是不是因为在vs中才导致这里和下面的设置返回值不为零，即设置失败？[/color]

api_set_thread_policy(&attr, SCHED_FIFO);

printf("set SCHED_RR policy\n");

api_set_thread_policy(&attr, SCHED_RR);

/* 还原之前的策略 */

printf("Restore current policy\n");

api_set_thread_policy(&attr, policy);

* 反初始化 pthread_attr_t 结构

* 如果 pthread_attr_init 的实现对属性对象的内存空间是动态分配的，

* phread_attr_destory 就会释放该内存空间

rs = pthread_attr_destroy(&attr);

assert(rs == 0);

return 0;

}

#endif