Subversion Repositories HelenOS-historic

Rev

Rev 1658 | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 1658 Rev 1780
Line 43... Line 43...
43 
 
 43 
 
44 
SPINLOCK_INITIALIZE(lock);
 44 
SPINLOCK_INITIALIZE(lock);
45 
 
 45 
 
46 
static waitq_t can_start;
 46 
static waitq_t can_start;
47 
 
 47 
 
48 
__u32 seed = 0xdeadbeef;
 48 
uint32_t seed = 0xdeadbeef;
49 
 
 49 
 
50 
static __u32 random(__u32 max);
 50 
static uint32_t random(uint32_t max);
51 
 
 51 
 
52 
static void consumer(void *arg);
 52 
static void consumer(void *arg);
53 
static void failed(void);
 53 
static void failed(void);
54 
 
 54 
 
55 
__u32 random(__u32 max)
 55 
uint32_t random(uint32_t max)
56 
{
 56 
{
57 
    __u32 rc;
 57 
    uint32_t rc;
58 
 
 58 
 
59 
    spinlock_lock(&lock);  
 59 
    spinlock_lock(&lock);  
60 
    rc = seed % max;
 60 
    rc = seed % max;
61 
    seed = (((seed<<2) ^ (seed>>2)) * 487) + rc;
 61 
    seed = (((seed<<2) ^ (seed>>2)) * 487) + rc;
62 
    spinlock_unlock(&lock);
 62 
    spinlock_unlock(&lock);
Line 93... Line 93...
93 
    thread_exit();
 93 
    thread_exit();
94 
}
 94 
}
95 
 
 95 
 
96 
void test(void)
 96 
void test(void)
97 
{
 97 
{
98 
    __u32 i, k;
 98 
    uint32_t i, k;
99 
   
 99 
   
100 
    printf("Semaphore test #2\n");
 100 
    printf("Semaphore test #2\n");
101 
   
 101 
   
102 
    waitq_initialize(&can_start);
 102 
    waitq_initialize(&can_start);
103 
    semaphore_initialize(&sem, 5);
 103 
    semaphore_initialize(&sem, 5);