Commit dc2dfcf0 authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

qemu-timer: more clock functions 



These will be used when moving icount accounting to cpus.c.

Reviewed-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent f3fc6e2e

qemu-timer.c

+25 −0
Original line number Diff line number Diff line
@@ -495,6 +495,31 @@ void qemu_clock_warp(QEMUClock *clock) 
    }

}



int64_t qemu_clock_has_timers(QEMUClock *clock)

{

    return !!clock->active_timers;

}



int64_t qemu_clock_expired(QEMUClock *clock)

{

    return (clock->active_timers &&

            clock->active_timers->expire_time < qemu_get_clock_ns(clock));

}



int64_t qemu_clock_deadline(QEMUClock *clock)

{

    /* To avoid problems with overflow limit this to 2^32.  */

    int64_t delta = INT32_MAX;



    if (clock->active_timers) {

        delta = clock->active_timers->expire_time - qemu_get_clock_ns(clock);

    }

    if (delta < 0) {

        delta = 0;

    }

    return delta;

}



QEMUTimer *qemu_new_timer(QEMUClock *clock, int scale,

                          QEMUTimerCB *cb, void *opaque)

{

qemu-timer.h

+3 −0
Original line number Diff line number Diff line
@@ -38,6 +38,9 @@ extern QEMUClock *vm_clock; 
extern QEMUClock *host_clock;



int64_t qemu_get_clock_ns(QEMUClock *clock);

int64_t qemu_clock_has_timers(QEMUClock *clock);

int64_t qemu_clock_expired(QEMUClock *clock);

int64_t qemu_clock_deadline(QEMUClock *clock);

void qemu_clock_enable(QEMUClock *clock, int enabled);

void qemu_clock_warp(QEMUClock *clock);