From 4e0c6529fcb5ccbed5eb2c4f094264eb447d49ea Mon Sep 17 00:00:00 2001 From: Alex Bligh Date: Wed, 21 Aug 2013 16:02:43 +0100 Subject: aio / timers: add ppoll support with qemu_poll_ns Add qemu_poll_ns which works like g_poll but takes a nanosecond timeout. Signed-off-by: Alex Bligh Signed-off-by: Stefan Hajnoczi --- qemu-timer.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'qemu-timer.c') diff --git a/qemu-timer.c b/qemu-timer.c index be29adf9eb..120d58fb2a 100644 --- a/qemu-timer.c +++ b/qemu-timer.c @@ -37,6 +37,10 @@ #include #endif +#ifdef CONFIG_PPOLL +#include +#endif + /***********************************************************/ /* timers */ @@ -323,6 +327,26 @@ int qemu_timeout_ns_to_ms(int64_t ns) } +/* qemu implementation of g_poll which uses a nanosecond timeout but is + * otherwise identical to g_poll + */ +int qemu_poll_ns(GPollFD *fds, guint nfds, int64_t timeout) +{ +#ifdef CONFIG_PPOLL + if (timeout < 0) { + return ppoll((struct pollfd *)fds, nfds, NULL, NULL); + } else { + struct timespec ts; + ts.tv_sec = timeout / 1000000000LL; + ts.tv_nsec = timeout % 1000000000LL; + return ppoll((struct pollfd *)fds, nfds, &ts, NULL); + } +#else + return g_poll(fds, nfds, qemu_timeout_ns_to_ms(timeout)); +#endif +} + + QEMUTimer *qemu_new_timer(QEMUClock *clock, int scale, QEMUTimerCB *cb, void *opaque) { -- cgit v1.2.1