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add qemu_get_clock_ns

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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 <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Paolo Bonzini 2010-01-26 10:31:46 +02:00 committed by Anthony Liguori
parent e970ec0b5e
commit 41c872b6bf
2 changed files with 20 additions and 2 deletions
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1
qemu-timer.h
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@ -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);

21
vl.c
View File

@ -931,6 +931,23 @@ 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();
@ -2866,7 +2883,7 @@ 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;
@ -2877,7 +2894,7 @@ 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