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support setitimer/getitimer

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This commit is contained in:
Tomoki Shirasawa
2016-02-19 15:25:05 +09:00
parent 307b2b8da5
commit 2c50b716fd
5 changed files with 256 additions and 16 deletions
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8
kernel/include/process.h
View File

@@ -533,6 +533,13 @@ struct thread {
struct timespec btime;
int times_update;
int in_kernel;
// interval timers
int itimer_enabled;
struct itimerval itimer_virtual;
struct itimerval itimer_prof;
struct timespec itimer_virtual_value;
struct timespec itimer_prof_value;
};
struct process_vm {
@@ -636,5 +643,6 @@ void process_unlock(struct process *proc, struct mcs_rwlock_node_irqsave *lock);
void chain_process(struct process *);
void chain_thread(struct thread *);
void proc_init();
void set_timer();
#endif

45
kernel/include/time.h
View File

@@ -53,6 +53,15 @@ struct timezone
int tz_dsttime; /* Nonzero if DST is ever in effect. */
};
#define ITIMER_REAL 0
#define ITIMER_VIRTUAL 1
#define ITIMER_PROF 2
struct itimerval {
struct timeval it_interval;
struct timeval it_value;
};
static inline void
ts_add(struct timespec *ats, const struct timespec *bts)
{
@@ -75,5 +84,41 @@ ts_sub(struct timespec *ats, const struct timespec *bts)
}
}
static inline void
tv_add(struct timeval *ats, const struct timeval *bts)
{
ats->tv_sec += bts->tv_sec;
ats->tv_usec += bts->tv_usec;
while(ats->tv_usec >= 1000000){
ats->tv_sec++;
ats->tv_usec -= 1000000;
}
}
static inline void
tv_sub(struct timeval *ats, const struct timeval *bts)
{
ats->tv_sec -= bts->tv_sec;
ats->tv_usec -= bts->tv_usec;
while(ats->tv_usec < 0){
ats->tv_sec--;
ats->tv_usec += 1000000;
}
}
static inline void
tv_to_ts(struct timespec *ats, const struct timeval *bts)
{
ats->tv_sec = bts->tv_sec;
ats->tv_nsec = bts->tv_usec * 1000;
}
static inline void
ts_to_tv(struct timeval *ats, const struct timespec *bts)
{
ats->tv_sec = bts->tv_sec;
ats->tv_usec = bts->tv_nsec / 1000;
}
#endif // __TIME_H