From patchwork Mon Dec 21 08:09:18 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [07/19] add qemu_get_clock_ns From: Paolo Bonzini X-Patchwork-Id: 41524 Message-Id: <1261382970-23251-8-git-send-email-pbonzini@redhat.com> To: qemu-devel@nongnu.org Date: Mon, 21 Dec 2009 09:09:18 +0100 Some places use get_clock directly because they want to access the rt_clock with nanosecond precision. Add a function to do exactly that instead of using internal interfaces. Signed-off-by: Paolo Bonzini --- qemu-timer.h | 1 + vl.c | 21 +++++++++++++++++++-- 2 files changed, 20 insertions(+), 2 deletions(-) diff --git a/qemu-timer.h b/qemu-timer.h index e7eaa04..c17b4e6 100644 --- a/qemu-timer.h +++ b/qemu-timer.h @@ -25,6 +25,7 @@ extern QEMUClock *vm_clock; extern QEMUClock *host_clock; int64_t qemu_get_clock(QEMUClock *clock); +int64_t qemu_get_clock_ns(QEMUClock *clock); QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque); void qemu_free_timer(QEMUTimer *ts); diff --git a/vl.c b/vl.c index 1af2f81..797c56f 100644 --- a/vl.c +++ b/vl.c @@ -1144,6 +1144,23 @@ int64_t qemu_get_clock(QEMUClock *clock) } } +int64_t qemu_get_clock_ns(QEMUClock *clock) +{ + switch(clock->type) { + case QEMU_CLOCK_REALTIME: + return get_clock(); + default: + case QEMU_CLOCK_VIRTUAL: + if (use_icount) { + return cpu_get_icount(); + } else { + return cpu_get_clock(); + } + case QEMU_CLOCK_HOST: + return get_clock_realtime(); + } +} + static void init_clocks(void) { init_get_clock(); @@ -3094,7 +3111,7 @@ static int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque) } bytes_transferred_last = bytes_transferred; - bwidth = get_clock(); + bwidth = qemu_get_clock_ns(rt_clock); while (!qemu_file_rate_limit(f)) { int ret; @@ -3105,7 +3122,7 @@ static int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque) break; } - bwidth = get_clock() - bwidth; + bwidth = qemu_get_clock_ns(rt_clock) - bwidth; bwidth = (bytes_transferred - bytes_transferred_last) / bwidth; /* if we haven't transferred anything this round, force expected_time to a