linux執行緒的優先順序設定

**：

#include 

#include 

#include 

#include 

#include 

#include   

void * thr_fun(void *arg)

if (policy == sched_fifo)

else if (policy == sched_other)

else if (policy == sched_rr)

printf("param:%d/n", param.sched_priority); 

long long i;

while (1)

pthread_exit(null); 

}int main(void)

//if (inher == pthread_explicit_sched)

else if (inher == pthread_inherit_sched)

//設定繼承的排程策略

//必需設定inher的屬性為 pthread_explicit_sched，否則設定執行緒的優先順序會被忽略

ret = pthread_attr_setinheritsched(&attr, inher);

if (ret!=0)

policy = sched_fifo;//在ubuntu9.10上需要root許可權

//設定執行緒排程策略

ret = pthread_attr_setschedpolicy(&attr, policy);

if (ret!=0)

param.sched_priority = 3;

//設定排程引數

ret = pthread_attr_setschedparam(&attr, ¶m);

if (ret!=0)

//建立執行緒

ret = pthread_create(&tid, &attr, thr_fun, null);

if (ret!=0)

while (1)

pthread_join(tid, null);

pthread_exit(null);

}

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