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authorAlex Bligh <alex@alex.org.uk>2013-08-21 16:02:43 +0100
committerStefan Hajnoczi <stefanha@redhat.com>2013-08-22 19:10:26 +0200
commit4e0c6529fcb5ccbed5eb2c4f094264eb447d49ea (patch)
tree0f89fb6942e9397892767290734b00ec00cfe9e8 /qemu-timer.c
parent043a7e1f8f66f3089ef0158aea00203e4591ba8d (diff)
downloadqemu-arm-4e0c6529fcb5ccbed5eb2c4f094264eb447d49ea.tar.gz
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 <alex@alex.org.uk> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'qemu-timer.c')
-rw-r--r--qemu-timer.c24
1 files changed, 24 insertions, 0 deletions
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 <mmsystem.h>
#endif
+#ifdef CONFIG_PPOLL
+#include <poll.h>
+#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)
{