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authorPaolo Bonzini <pbonzini@redhat.com>2011-09-12 15:50:16 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2011-10-21 18:14:30 +0200
commitdc2dfcf0002b4e6be494959a1ed2589dd109def0 (patch)
tree9710f4a6b64e4f449bbe1e0be348df5b281f20dc /qemu-timer.c
parentf3fc6e2e9613d33e715624e6dd60f525f49446d1 (diff)
qemu-timer: more clock functions
These will be used when moving icount accounting to cpus.c. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'qemu-timer.c')
-rw-r--r--qemu-timer.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/qemu-timer.c b/qemu-timer.c
index e2551f3298..ebb50890e8 100644
--- a/qemu-timer.c
+++ b/qemu-timer.c
@@ -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)
{