From cb842c90a485d9dbf05fa51e1500b3c1a1931256 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Wed, 13 Apr 2011 10:03:46 +0200 Subject: qemu_next_deadline should not consider host-time timers It is purely for icount-based virtual timers. And now that we got the code right, rename the function to clarify the intended scope. Signed-off-by: Paolo Bonzini Tested-by: Edgar E. Iglesias Signed-off-by: Edgar E. Iglesias --- cpus.c | 4 ++-- qemu-timer.c | 13 ++++--------- qemu-timer.h | 2 +- 3 files changed, 7 insertions(+), 12 deletions(-) diff --git a/cpus.c b/cpus.c index 6a50199039..1fc34b75c2 100644 --- a/cpus.c +++ b/cpus.c @@ -833,7 +833,7 @@ static void *qemu_tcg_cpu_thread_fn(void *arg) while (1) { cpu_exec_all(); - if (use_icount && qemu_next_deadline() <= 0) { + if (use_icount && qemu_next_icount_deadline() <= 0) { qemu_notify_event(); } qemu_tcg_wait_io_event(); @@ -1050,7 +1050,7 @@ static int tcg_cpu_exec(CPUState *env) qemu_icount -= (env->icount_decr.u16.low + env->icount_extra); env->icount_decr.u16.low = 0; env->icount_extra = 0; - count = qemu_icount_round (qemu_next_deadline()); + count = qemu_icount_round(qemu_next_icount_deadline()); qemu_icount += count; decr = (count > 0xffff) ? 0xffff : count; count -= decr; diff --git a/qemu-timer.c b/qemu-timer.c index 7998f37a51..b8c0c8870d 100644 --- a/qemu-timer.c +++ b/qemu-timer.c @@ -452,7 +452,7 @@ void qemu_clock_warp(QEMUClock *clock) } vm_clock_warp_start = qemu_get_clock_ns(rt_clock); - deadline = qemu_next_deadline(); + deadline = qemu_next_icount_deadline(); if (deadline > 0) { /* * Ensure the vm_clock proceeds even when the virtual CPU goes to @@ -765,21 +765,16 @@ static void host_alarm_handler(int host_signum) } } -int64_t qemu_next_deadline(void) +int64_t qemu_next_icount_deadline(void) { /* To avoid problems with overflow limit this to 2^32. */ int64_t delta = INT32_MAX; + assert(use_icount); if (active_timers[QEMU_CLOCK_VIRTUAL]) { delta = active_timers[QEMU_CLOCK_VIRTUAL]->expire_time - qemu_get_clock_ns(vm_clock); } - if (active_timers[QEMU_CLOCK_HOST]) { - int64_t hdelta = active_timers[QEMU_CLOCK_HOST]->expire_time - - qemu_get_clock_ns(host_clock); - if (hdelta < delta) - delta = hdelta; - } if (delta < 0) delta = 0; @@ -1169,7 +1164,7 @@ int qemu_calculate_timeout(void) } else { /* Wait for either IO to occur or the next timer event. */ - add = qemu_next_deadline(); + add = qemu_next_icount_deadline(); /* We advance the timer before checking for IO. Limit the amount we advance so that early IO activity won't get the guest too far ahead. */ diff --git a/qemu-timer.h b/qemu-timer.h index c01bcaba66..3a9228f7df 100644 --- a/qemu-timer.h +++ b/qemu-timer.h @@ -51,7 +51,7 @@ int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time); void qemu_run_all_timers(void); int qemu_alarm_pending(void); -int64_t qemu_next_deadline(void); +int64_t qemu_next_icount_deadline(void); void configure_alarms(char const *opt); void configure_icount(const char *option); int qemu_calculate_timeout(void); -- cgit v1.2.3