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testspin.c
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testspin.c
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#include <sched.h>
#include <stdio.h>
#include <stdlib.h>
#include "kendynet.h"
#include "kn_thread.h"
#include "kn_time.h"
#include "spinlock.h"
int value = 0;
spinlock_t lock;
void *routine1(void *arg)
{
int i = 0;
for(; i < 5000000; ++i){
spin_lock(lock);
++value;
spin_unlock(lock);
}
return NULL;
}
void *routine2(void *arg)
{
int i = 0;
for(; i < 5000000; ++i){
spin_lock(lock);
--value;
spin_unlock(lock);
}
return NULL;
}
int main(){
lock = spin_create();
kn_thread_t t1 = kn_create_thread(THREAD_JOINABLE);
kn_thread_t t2 = kn_create_thread(THREAD_JOINABLE);
kn_thread_t t3 = kn_create_thread(THREAD_JOINABLE);
kn_thread_t t4 = kn_create_thread(THREAD_JOINABLE);
kn_thread_start_run(t1,routine1,NULL);
kn_thread_start_run(t2,routine2,NULL);
kn_thread_start_run(t3,routine1,NULL);
kn_thread_start_run(t4,routine2,NULL);
kn_thread_join(t1);
kn_thread_join(t2);
kn_thread_join(t3);
kn_thread_join(t4);
printf("%d\n",value);
return 0;
}