From dc2dfcf0002b4e6be494959a1ed2589dd109def0 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Mon, 12 Sep 2011 15:50:16 +0200 Subject: [PATCH] qemu-timer: more clock functions These will be used when moving icount accounting to cpus.c. Reviewed-by: Anthony Liguori Signed-off-by: Paolo Bonzini --- qemu-timer.c | 25 +++++++++++++++++++++++++ qemu-timer.h | 3 +++ 2 files changed, 28 insertions(+) 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) { diff --git a/qemu-timer.h b/qemu-timer.h index 0a43469847..4578075f6f 100644 --- a/qemu-timer.h +++ b/qemu-timer.h @@ -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); -- GitLab