static void
throttlePipe_timerFunc( void* opaque )
{
ThrottlePipe* pipe = opaque;
int64_t now = qemu_get_clock_ns(vm_clock);
DD("%s: TICK! now=%lld sendExpiration=%lld recvExpiration=%lld\n",
__FUNCTION__, now, pipe->sendExpiration, pipe->recvExpiration);
int flags = 0;
if (pipe->sendExpiration && now > pipe->sendExpiration) {
flags |= PIPE_WAKE_WRITE;
pipe->sendExpiration = 0;
}
if (pipe->recvExpiration && now > pipe->recvExpiration) {
flags |= PIPE_WAKE_READ;
pipe->recvExpiration = 0;
}
flags &= pipe->pingpong.flags;
if (flags != 0) {
DD("%s: WAKE %d\n", __FUNCTION__, flags);
goldfish_pipe_wake(pipe->pingpong.hwpipe, flags);
}
throttlePipe_rearm(pipe);
}
static void
throttlePipe_timerFunc( void* opaque )
{
ThrottlePipe* pipe = opaque;
int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
DD("%s: TICK! now=%lld sendExpiration=%lld recvExpiration=%lld\n",
__FUNCTION__, now, pipe->sendExpiration, pipe->recvExpiration);
/* Timer has expired, signal wake up if needed */
int flags = 0;
if (pipe->sendExpiration && now > pipe->sendExpiration) {
flags |= PIPE_WAKE_WRITE;
pipe->sendExpiration = 0;
}
if (pipe->recvExpiration && now > pipe->recvExpiration) {
flags |= PIPE_WAKE_READ;
pipe->recvExpiration = 0;
}
flags &= pipe->pingpong.flags;
if (flags != 0) {
DD("%s: WAKE %d\n", __FUNCTION__, flags);
goldfish_pipe_wake(pipe->pingpong.hwpipe, flags);
}
throttlePipe_rearm(pipe);
}
static int
throttlePipe_recvBuffers( void* opaque, GoldfishPipeBuffer* buffers, int numBuffers )
{
ThrottlePipe* pipe = opaque;
int ret;
if (pipe->recvExpiration > 0) {
return PIPE_ERROR_AGAIN;
}
ret = pingPongPipe_recvBuffers(&pipe->pingpong, buffers, numBuffers);
if (ret > 0) {
pipe->recvExpiration = qemu_get_clock_ns(vm_clock) + ret*pipe->recvRate;
throttlePipe_rearm(pipe);
}
return ret;
}
static int
throttlePipe_sendBuffers( void* opaque, const GoldfishPipeBuffer* buffers, int numBuffers )
{
ThrottlePipe* pipe = opaque;
int ret;
if (pipe->sendExpiration > 0) {
return PIPE_ERROR_AGAIN;
}
ret = pingPongPipe_sendBuffers(&pipe->pingpong, buffers, numBuffers);
if (ret > 0) {
/* Compute next send expiration time */
pipe->sendExpiration = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + ret*pipe->sendRate;
throttlePipe_rearm(pipe);
}
return ret;
}
