diff options
| -rw-r--r-- | qemu-timer.c | 34 |
1 files changed, 14 insertions, 20 deletions
diff --git a/qemu-timer.c b/qemu-timer.c index 8eadd16aa2..b9fd75dbb8 100644 --- a/qemu-timer.c +++ b/qemu-timer.c @@ -611,7 +611,7 @@ static void unix_stop_timer(struct qemu_alarm_timer *t) #ifdef _WIN32 static MMRESULT mm_timer; -static unsigned mm_period; +static TIMECAPS mm_tc; static void CALLBACK mm_alarm_handler(UINT uTimerID, UINT uMsg, DWORD_PTR dwUser, DWORD_PTR dw1, @@ -628,16 +628,12 @@ static void CALLBACK mm_alarm_handler(UINT uTimerID, UINT uMsg, static int mm_start_timer(struct qemu_alarm_timer *t) { - TIMECAPS tc; + timeGetDevCaps(&mm_tc, sizeof(mm_tc)); - memset(&tc, 0, sizeof(tc)); - timeGetDevCaps(&tc, sizeof(tc)); + timeBeginPeriod(mm_tc.wPeriodMin); - mm_period = tc.wPeriodMin; - timeBeginPeriod(mm_period); - - mm_timer = timeSetEvent(1, /* interval (ms) */ - mm_period, /* resolution */ + mm_timer = timeSetEvent(mm_tc.wPeriodMin, /* interval (ms) */ + mm_tc.wPeriodMin, /* resolution */ mm_alarm_handler, /* function */ (DWORD_PTR)t, /* parameter */ TIME_ONESHOT | TIME_CALLBACK_FUNCTION); @@ -645,7 +641,7 @@ static int mm_start_timer(struct qemu_alarm_timer *t) if (!mm_timer) { fprintf(stderr, "Failed to initialize win32 alarm timer: %ld\n", GetLastError()); - timeEndPeriod(mm_period); + timeEndPeriod(mm_tc.wPeriodMin); return -1; } @@ -655,23 +651,21 @@ static int mm_start_timer(struct qemu_alarm_timer *t) static void mm_stop_timer(struct qemu_alarm_timer *t) { timeKillEvent(mm_timer); - timeEndPeriod(mm_period); + timeEndPeriod(mm_tc.wPeriodMin); } static void mm_rearm_timer(struct qemu_alarm_timer *t, int64_t delta) { int64_t nearest_delta_ms = delta / 1000000; - if (nearest_delta_ms < 1) { - nearest_delta_ms = 1; - } - /* UINT_MAX can be 32 bit */ - if (nearest_delta_ms > UINT_MAX) { - nearest_delta_ms = UINT_MAX; + if (nearest_delta_ms < mm_tc.wPeriodMin) { + nearest_delta_ms = mm_tc.wPeriodMin; + } else if (nearest_delta_ms > mm_tc.wPeriodMax) { + nearest_delta_ms = mm_tc.wPeriodMax; } timeKillEvent(mm_timer); - mm_timer = timeSetEvent((unsigned int) nearest_delta_ms, - mm_period, + mm_timer = timeSetEvent((UINT)nearest_delta_ms, + mm_tc.wPeriodMin, mm_alarm_handler, (DWORD_PTR)t, TIME_ONESHOT | TIME_CALLBACK_FUNCTION); @@ -680,7 +674,7 @@ static void mm_rearm_timer(struct qemu_alarm_timer *t, int64_t delta) fprintf(stderr, "Failed to re-arm win32 alarm timer %ld\n", GetLastError()); - timeEndPeriod(mm_period); + timeEndPeriod(mm_tc.wPeriodMin); exit(1); } } |