int
obsd_handle_events(struct libusb_context *ctx, struct pollfd *fds, nfds_t nfds,
int num_ready)
{
struct libusb_device_handle *handle;
struct handle_priv *hpriv = NULL;
struct usbi_transfer *itransfer;
struct pollfd *pollfd;
int i, err = 0;
usbi_dbg("");
pthread_mutex_lock(&ctx->open_devs_lock);
for (i = 0; i < nfds && num_ready > 0; i++) {
pollfd = &fds[i];
if (!pollfd->revents)
continue;
hpriv = NULL;
num_ready--;
list_for_each_entry(handle, &ctx->open_devs, list,
struct libusb_device_handle) {
hpriv = (struct handle_priv *)handle->os_priv;
if (hpriv->pipe[0] == pollfd->fd)
break;
hpriv = NULL;
}
if (NULL == hpriv) {
usbi_dbg("fd %d is not an event pipe!", pollfd->fd);
err = ENOENT;
break;
}
if (pollfd->revents & POLLERR) {
usbi_remove_pollfd(HANDLE_CTX(handle), hpriv->pipe[0]);
usbi_handle_disconnect(handle);
continue;
}
if (read(hpriv->pipe[0], &itransfer, sizeof(itransfer)) < 0) {
err = errno;
break;
}
if ((err = usbi_handle_transfer_completion(itransfer,
LIBUSB_TRANSFER_COMPLETED)))
break;
}
pthread_mutex_unlock(&ctx->open_devs_lock);
if (err)
return _errno_to_libusb(err);
return (LIBUSB_SUCCESS);
}
static int wince_handle_events(
struct libusb_context *ctx,
struct pollfd *fds, POLL_NFDS_TYPE nfds, int num_ready)
{
struct wince_transfer_priv* transfer_priv = NULL;
POLL_NFDS_TYPE i = 0;
BOOL found = FALSE;
struct usbi_transfer *transfer;
DWORD io_size, io_result;
int r = LIBUSB_SUCCESS;
usbi_mutex_lock(&ctx->open_devs_lock);
for (i = 0; i < nfds && num_ready > 0; i++) {
usbi_dbg("checking fd %d with revents = %04x", fds[i].fd, fds[i].revents);
if (!fds[i].revents)
continue;
num_ready--;
// Because a Windows OVERLAPPED is used for poll emulation,
// a pollable fd is created and stored with each transfer
usbi_mutex_lock(&ctx->flying_transfers_lock);
list_for_each_entry(transfer, &ctx->flying_transfers, list, struct usbi_transfer) {
transfer_priv = usbi_transfer_get_os_priv(transfer);
if (transfer_priv->pollable_fd.fd == fds[i].fd) {
found = TRUE;
break;
}
}
usbi_mutex_unlock(&ctx->flying_transfers_lock);
if (found && HasOverlappedIoCompleted(transfer_priv->pollable_fd.overlapped)) {
io_result = (DWORD)transfer_priv->pollable_fd.overlapped->Internal;
io_size = (DWORD)transfer_priv->pollable_fd.overlapped->InternalHigh;
usbi_remove_pollfd(ctx, transfer_priv->pollable_fd.fd);
// let handle_callback free the event using the transfer wfd
// If you don't use the transfer wfd, you run a risk of trying to free a
// newly allocated wfd that took the place of the one from the transfer.
wince_handle_callback(transfer, io_result, io_size);
} else if (found) {
usbi_err(ctx, "matching transfer for fd %d has not completed", fds[i]);
r = LIBUSB_ERROR_OTHER;
break;
} else {
usbi_err(ctx, "could not find a matching transfer for fd %d", fds[i]);
r = LIBUSB_ERROR_NOT_FOUND;
break;
}
}
usbi_mutex_unlock(&ctx->open_devs_lock);
return r;
}
static int windows_handle_events(struct libusb_context *ctx, struct pollfd *fds, POLL_NFDS_TYPE nfds, int num_ready)
{
struct windows_context_priv *priv = _context_priv(ctx);
struct usbi_transfer *itransfer;
DWORD io_size, io_result;
POLL_NFDS_TYPE i;
bool found;
int transfer_fd;
int r = LIBUSB_SUCCESS;
usbi_mutex_lock(&ctx->open_devs_lock);
for (i = 0; i < nfds && num_ready > 0; i++) {
usbi_dbg("checking fd %d with revents = %04x", fds[i].fd, fds[i].revents);
if (!fds[i].revents)
continue;
num_ready--;
// Because a Windows OVERLAPPED is used for poll emulation,
// a pollable fd is created and stored with each transfer
found = false;
transfer_fd = -1;
usbi_mutex_lock(&ctx->flying_transfers_lock);
list_for_each_entry(itransfer, &ctx->flying_transfers, list, struct usbi_transfer) {
transfer_fd = priv->backend->get_transfer_fd(itransfer);
if (transfer_fd == fds[i].fd) {
found = true;
break;
}
}
usbi_mutex_unlock(&ctx->flying_transfers_lock);
if (found) {
priv->backend->get_overlapped_result(itransfer, &io_result, &io_size);
usbi_remove_pollfd(ctx, transfer_fd);
// let handle_callback free the event using the transfer wfd
// If you don't use the transfer wfd, you run a risk of trying to free a
// newly allocated wfd that took the place of the one from the transfer.
windows_handle_callback(priv->backend, itransfer, io_result, io_size);
} else {
usbi_err(ctx, "could not find a matching transfer for fd %d", fds[i].fd);
r = LIBUSB_ERROR_NOT_FOUND;
break;
}
}
usbi_mutex_unlock(&ctx->open_devs_lock);
return r;
}
void
obsd_close(struct libusb_device_handle *handle)
{
struct handle_priv *hpriv = (struct handle_priv *)handle->os_priv;
struct device_priv *dpriv = (struct device_priv *)handle->dev->os_priv;
usbi_dbg("close: fd %d", dpriv->fd);
close(dpriv->fd);
dpriv->fd = -1;
usbi_remove_pollfd(HANDLE_CTX(handle), hpriv->pipe[0]);
close(hpriv->pipe[0]);
close(hpriv->pipe[1]);
}