mirror of https://gerrit.osmocom.org/libusrp
583 lines
17 KiB
C++
583 lines
17 KiB
C++
/* -*- c++ -*- */
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/*
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* Copyright 2006,2009,2010 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio.
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#define DO_DEBUG 0
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#include <usb.h>
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#include "fusb.h"
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#include "fusb_darwin.h"
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#include "darwin_libusb.h"
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#include <iostream>
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static const int USB_TIMEOUT = 100; // in milliseconds
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static const UInt8 NUM_QUEUE_ITEMS = 20;
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fusb_devhandle_darwin::fusb_devhandle_darwin (usb_dev_handle* udh)
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: fusb_devhandle (udh)
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{
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// that's it
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}
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fusb_devhandle_darwin::~fusb_devhandle_darwin ()
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{
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// nop
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}
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fusb_ephandle*
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fusb_devhandle_darwin::make_ephandle (int endpoint, bool input_p,
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int block_size, int nblocks)
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{
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return new fusb_ephandle_darwin (this, endpoint, input_p,
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block_size, nblocks);
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}
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// ----------------------------------------------------------------
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fusb_ephandle_darwin::fusb_ephandle_darwin (fusb_devhandle_darwin* dh,
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int endpoint, bool input_p,
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int block_size, int nblocks)
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: fusb_ephandle (endpoint, input_p, block_size, nblocks),
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d_devhandle (dh), d_pipeRef (0), d_transferType (0),
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d_interfaceRef (0), d_interface (0), d_queue (0),
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d_buffer (0), d_bufLenBytes (0)
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{
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d_bufLenBytes = fusb_sysconfig::max_block_size();
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// create circular buffer
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d_buffer = new circular_buffer<char> (NUM_QUEUE_ITEMS * d_bufLenBytes,
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!d_input_p, d_input_p);
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// create the queue
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d_queue = new circular_linked_list <s_buffer_ptr> (NUM_QUEUE_ITEMS);
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d_queue->iterate_start ();
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s_node_ptr l_node = d_queue->iterate_next ();
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while (l_node) {
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l_node->both (new s_both<s_buffer_ptr> (l_node, this));
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s_buffer_ptr l_buf = new s_buffer (d_bufLenBytes);
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l_node->object (l_buf);
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l_node = d_queue->iterate_next ();
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l_buf = NULL;
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}
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d_readRunning = new gruel::mutex ();
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d_runThreadRunning = new gruel::mutex ();
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d_runBlock = new gruel::condition_variable ();
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d_readBlock = new gruel::condition_variable ();
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d_runBlock_mutex = new gruel::mutex ();
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d_readBlock_mutex = new gruel::mutex ();
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}
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fusb_ephandle_darwin::~fusb_ephandle_darwin ()
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{
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stop ();
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d_queue->iterate_start ();
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s_node_ptr l_node = d_queue->iterate_next ();
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while (l_node) {
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s_both_ptr l_both = l_node->both ();
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delete l_both;
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l_both = NULL;
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l_node->both (NULL);
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s_buffer_ptr l_buf = l_node->object ();
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delete l_buf;
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l_buf = NULL;
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l_node->object (NULL);
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l_node = d_queue->iterate_next ();
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}
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delete d_queue;
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d_queue = NULL;
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delete d_buffer;
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d_buffer = NULL;
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delete d_readRunning;
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d_readRunning = NULL;
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delete d_runThreadRunning;
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d_runThreadRunning = NULL;
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delete d_runBlock_mutex;
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d_runBlock_mutex = NULL;
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delete d_readBlock_mutex;
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d_readBlock_mutex = NULL;
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delete d_runBlock;
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d_runBlock = NULL;
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delete d_readBlock;
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d_readBlock = NULL;
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}
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bool
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fusb_ephandle_darwin::start ()
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{
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UInt8 direction, number, interval;
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UInt16 maxPacketSize;
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// reset circular buffer
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d_buffer->reset ();
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// reset the queue
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d_queue->num_used (0);
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d_queue->iterate_start ();
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s_node_ptr l_node = d_queue->iterate_next ();
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while (l_node) {
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l_node->both()->set (l_node, this);
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l_node->object()->reset ();
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l_node->set_available ();
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l_node = d_queue->iterate_next ();
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}
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d_pipeRef = d_transferType = 0;
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usb_dev_handle* dev = d_devhandle->get_usb_dev_handle ();
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if (! dev)
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USB_ERROR_STR (false, -ENXIO, "fusb_ephandle_darwin::start: "
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"null device");
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darwin_dev_handle* device = (darwin_dev_handle*) dev->impl_info;
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if (! device)
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USB_ERROR_STR (false, -ENOENT, "fusb_ephandle_darwin::start: "
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"device not initialized");
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if (usb_debug) {
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std::cerr << "fusb_ephandle_darwin::start: dev = " <<
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(void*) dev << ", device = " << (void*) device << std::endl;
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}
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d_interfaceRef = device->interface;
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if (! d_interfaceRef)
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USB_ERROR_STR (false, -EACCES, "fusb_ephandle_darwin::start: "
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"interface used without being claimed");
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d_interface = *d_interfaceRef;
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// get read or write pipe info (depends on "d_input_p")
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if (usb_debug > 3) {
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std::cerr << "fusb_ephandle_darwin::start d_endpoint = " << d_endpoint
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<< ", d_input_p = " << (d_input_p ? "TRUE" : "FALSE") << std::endl;
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}
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int l_endpoint = (d_input_p ? USB_ENDPOINT_IN : USB_ENDPOINT_OUT);
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int pipeRef = ep_to_pipeRef (device, d_endpoint | l_endpoint);
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if (pipeRef < 0)
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USB_ERROR_STR (false, -EINVAL, "fusb_ephandle_darwin::start "
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" invalid pipeRef.\n");
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d_pipeRef = pipeRef;
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d_interface->GetPipeProperties (d_interfaceRef,
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d_pipeRef,
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&direction,
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&number,
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&d_transferType,
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&maxPacketSize,
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&interval);
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if (usb_debug == 3) {
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std::cerr << "fusb_ephandle_darwin::start: " << (d_input_p ? "read" : "write")
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<< ": ep = " << d_endpoint << ", pipeRef = " << d_pipeRef << "interface = "
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<< d_interface << ", interfaceRef = " << d_interfaceRef
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<< ", if_direction = " << direction << ", if_# = " << number
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<< ", if_interval = " << interval << ", if_maxPacketSize = "
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<< maxPacketSize << std::endl;
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}
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// set global start boolean
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d_started = true;
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// lock the runBlock mutex, before creating the run thread.
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// this guarantees that we can control execution between these 2 threads
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gruel::scoped_lock l (*d_runBlock_mutex);
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// create the run thread, which allows OSX to process I/O separately
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d_runThread = new gruel::thread (run_thread, this);
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// wait until the run thread (and possibky read thread) are -really-
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// going; this will unlock the mutex before waiting for a signal ()
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d_runBlock->wait (l);
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if (usb_debug) {
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std::cerr << "fusb_ephandle_darwin::start: " << (d_input_p ? "read" : "write")
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<< " started." << std::endl;
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}
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return (true);
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}
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void
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fusb_ephandle_darwin::run_thread (void* arg)
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{
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fusb_ephandle_darwin* This = static_cast<fusb_ephandle_darwin*>(arg);
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// lock the run thread running mutex; if ::stop() is called, it will
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// first abort() the pipe then wait for the run thread to finish,
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// via a lock() on this mutex
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gruel::mutex* l_runThreadRunning = This->d_runThreadRunning;
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gruel::scoped_lock l0 (*l_runThreadRunning);
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gruel::mutex* l_readRunning = This->d_readRunning;
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gruel::condition_variable* l_readBlock = This->d_readBlock;
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gruel::mutex* l_readBlock_mutex = This->d_readBlock_mutex;
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bool l_input_p = This->d_input_p;
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if (usb_debug) {
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std::cerr << "fusb_ephandle_darwin::run_thread: starting for "
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<< (l_input_p ? "read" : "write") << "." << std::endl;
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}
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usb_interface_t** l_interfaceRef = This->d_interfaceRef;
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usb_interface_t* l_interface = This->d_interface;
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CFRunLoopSourceRef l_cfSource;
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// create async run loop
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l_interface->CreateInterfaceAsyncEventSource (l_interfaceRef, &l_cfSource);
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CFRunLoopAddSource (CFRunLoopGetCurrent (), l_cfSource,
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kCFRunLoopDefaultMode);
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// get run loop reference, to allow other threads to stop
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This->d_CFRunLoopRef = CFRunLoopGetCurrent ();
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gruel::thread* l_rwThread = NULL;
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if (l_input_p) {
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// lock the readBlock mutex, before creating the read thread.
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// this guarantees that we can control execution between these 2 threads
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gruel::scoped_lock l1 (*l_readBlock_mutex);
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// create the read thread, which just issues all of the starting
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// async read commands, then returns
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l_rwThread = new gruel::thread (read_thread, arg);
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// wait until the the read thread is -really- going; this will
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// unlock the read block mutex before waiting for a signal ()
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l_readBlock->wait (l1);
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}
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{
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// now signal the run condition to release and finish ::start().
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// lock the runBlock mutex first; this will force waiting until the
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// ->wait() command is issued in ::start()
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gruel::mutex* l_run_block_mutex = This->d_runBlock_mutex;
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gruel::scoped_lock l2 (*l_run_block_mutex);
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// now that the lock is in place, signal the parent thread that
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// things are running
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This->d_runBlock->notify_one ();
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}
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// run the loop
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CFRunLoopRun ();
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if (l_input_p) {
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// wait for read_thread () to finish, if needed
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gruel::scoped_lock l3 (*l_readRunning);
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}
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// remove run loop stuff
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CFRunLoopRemoveSource (CFRunLoopGetCurrent (),
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l_cfSource, kCFRunLoopDefaultMode);
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if (usb_debug) {
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std::cerr << "fusb_ephandle_darwin::run_thread: finished for "
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<< (l_input_p ? "read" : "write") << "." << std::endl;
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}
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}
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void
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fusb_ephandle_darwin::read_thread (void* arg)
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{
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if (usb_debug) {
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std::cerr << "fusb_ephandle_darwin::read_thread: starting." << std::endl;
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}
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fusb_ephandle_darwin* This = static_cast<fusb_ephandle_darwin*>(arg);
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// before doing anything else, lock the read running mutex. this
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// mutex does flow control between this thread and the run_thread
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gruel::mutex* l_readRunning = This->d_readRunning;
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gruel::scoped_lock l0 (*l_readRunning);
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// signal the read condition from run_thread() to continue
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// lock the readBlock mutex first; this will force waiting until the
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// ->wait() command is issued in ::run_thread()
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gruel::condition_variable* l_readBlock = This->d_readBlock;
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gruel::mutex* l_read_block_mutex = This->d_readBlock_mutex;
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{
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gruel::scoped_lock l1 (*l_read_block_mutex);
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// now that the lock is in place, signal the parent thread that
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// things are running here
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l_readBlock->notify_one ();
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}
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// queue up all of the available read requests
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s_queue_ptr l_queue = This->d_queue;
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l_queue->iterate_start ();
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s_node_ptr l_node = l_queue->iterate_next ();
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while (l_node) {
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This->read_issue (l_node->both ());
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l_node = l_queue->iterate_next ();
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}
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if (usb_debug) {
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std::cerr << "fusb_ephandle_darwin::read_thread: finished." << std::endl;
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}
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}
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void
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fusb_ephandle_darwin::read_issue (s_both_ptr l_both)
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{
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if ((! l_both) || (! d_started)) {
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if (usb_debug > 4) {
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std::cerr << "fusb_ephandle_darwin::read_issue: Doing nothing; "
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<< "l_both is " << (void*) l_both << "; started is "
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<< (d_started ? "TRUE" : "FALSE") << std::endl;
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}
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return;
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}
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// set the node and buffer from the input "both"
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s_node_ptr l_node = l_both->node ();
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s_buffer_ptr l_buf = l_node->object ();
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void* v_buffer = (void*) l_buf->buffer ();
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// read up to d_bufLenBytes
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size_t bufLen = d_bufLenBytes;
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l_buf->n_used (bufLen);
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// setup system call result
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io_return_t result = kIOReturnSuccess;
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if (d_transferType == kUSBInterrupt)
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/* This is an interrupt pipe. We can't specify a timeout. */
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result = d_interface->ReadPipeAsync
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(d_interfaceRef, d_pipeRef, v_buffer, bufLen,
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(IOAsyncCallback1) read_completed, (void*) l_both);
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else
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result = d_interface->ReadPipeAsyncTO
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(d_interfaceRef, d_pipeRef, v_buffer, bufLen, 0, USB_TIMEOUT,
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(IOAsyncCallback1) read_completed, (void*) l_both);
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if (result != kIOReturnSuccess)
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USB_ERROR_STR_NO_RET (- darwin_to_errno (result),
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"fusb_ephandle_darwin::read_issue "
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"(ReadPipeAsync%s): %s",
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d_transferType == kUSBInterrupt ? "" : "TO",
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darwin_error_str (result));
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else if (usb_debug > 4) {
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std::cerr << "fusb_ephandle_darwin::read_issue: Queued " << (void*) l_both
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<< " (" << bufLen << " Bytes)" << std::endl;
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}
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}
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void
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fusb_ephandle_darwin::read_completed (void* refCon,
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io_return_t result,
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void* io_size)
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{
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size_t l_size = (size_t) io_size;
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s_both_ptr l_both = static_cast<s_both_ptr>(refCon);
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fusb_ephandle_darwin* This = static_cast<fusb_ephandle_darwin*>(l_both->This ());
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s_node_ptr l_node = l_both->node ();
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circular_buffer<char>* l_buffer = This->d_buffer;
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s_buffer_ptr l_buf = l_node->object ();
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size_t l_i_size = l_buf->n_used ();
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if (This->d_started && (l_i_size != l_size)) {
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std::cerr << "fusb_ephandle_darwin::read_completed: Expected " << l_i_size
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<< " bytes; read " << l_size << "." << std::endl;
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} else if (usb_debug > 4) {
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std::cerr << "fusb_ephandle_darwin::read_completed: Read " << (void*) l_both
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<< " (" << l_size << " bytes)" << std::endl;
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}
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// add this read to the transfer buffer, and check for overflow
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// -> data is being enqueued faster than it can be dequeued
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if (l_buffer->enqueue (l_buf->buffer (), l_size) == -1) {
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// print out that there's an overflow
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fputs ("uO", stderr);
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fflush (stderr);
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}
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// set buffer's # data to 0
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l_buf->n_used (0);
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// issue another read for this "both"
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This->read_issue (l_both);
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}
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int
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fusb_ephandle_darwin::read (void* buffer, int nbytes)
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{
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size_t l_nbytes = (size_t) nbytes;
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d_buffer->dequeue ((char*) buffer, &l_nbytes);
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if (usb_debug > 4) {
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std::cerr << "fusb_ephandle_darwin::read: request for " << nbytes
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<< " bytes, " << l_nbytes << " bytes retrieved." << std::endl;
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}
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return ((int) l_nbytes);
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}
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int
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fusb_ephandle_darwin::write (const void* buffer, int nbytes)
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{
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size_t l_nbytes = (size_t) nbytes;
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if (! d_started) {
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if (usb_debug) {
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std::cerr << "fusb_ephandle_darwin::write: Not yet started." << std::endl;
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}
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return (0);
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}
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while (l_nbytes != 0) {
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// find out how much data to copy; limited to "d_bufLenBytes" per node
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size_t t_nbytes = (l_nbytes > d_bufLenBytes) ? d_bufLenBytes : l_nbytes;
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// get next available node to write into;
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// blocks internally if none available
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s_node_ptr l_node = d_queue->find_next_available_node ();
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// copy the input into the node's buffer
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s_buffer_ptr l_buf = l_node->object ();
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l_buf->buffer ((char*) buffer, t_nbytes);
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void* v_buffer = (void*) l_buf->buffer ();
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// setup callback parameter & system call return
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s_both_ptr l_both = l_node->both ();
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io_return_t result = kIOReturnSuccess;
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if (d_transferType == kUSBInterrupt)
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/* This is an interrupt pipe ... can't specify a timeout. */
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result = d_interface->WritePipeAsync
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(d_interfaceRef, d_pipeRef, v_buffer, t_nbytes,
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(IOAsyncCallback1) write_completed, (void*) l_both);
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else
|
|
result = d_interface->WritePipeAsyncTO
|
|
(d_interfaceRef, d_pipeRef, v_buffer, t_nbytes, 0, USB_TIMEOUT,
|
|
(IOAsyncCallback1) write_completed, (void*) l_both);
|
|
|
|
if (result != kIOReturnSuccess)
|
|
USB_ERROR_STR (-1, - darwin_to_errno (result),
|
|
"fusb_ephandle_darwin::write_thread "
|
|
"(WritePipeAsync%s): %s",
|
|
d_transferType == kUSBInterrupt ? "" : "TO",
|
|
darwin_error_str (result));
|
|
else if (usb_debug > 4) {
|
|
std::cerr << "fusb_ephandle_darwin::write_thread: Queued " << (void*) l_both
|
|
<< " (" << t_nbytes << " Bytes)" << std::endl;
|
|
}
|
|
l_nbytes -= t_nbytes;
|
|
}
|
|
|
|
return (nbytes);
|
|
}
|
|
|
|
void
|
|
fusb_ephandle_darwin::write_completed (void* refCon,
|
|
io_return_t result,
|
|
void* io_size)
|
|
{
|
|
s_both_ptr l_both = static_cast<s_both_ptr>(refCon);
|
|
fusb_ephandle_darwin* This = static_cast<fusb_ephandle_darwin*>(l_both->This ());
|
|
size_t l_size = (size_t) io_size;
|
|
s_node_ptr l_node = l_both->node ();
|
|
s_queue_ptr l_queue = This->d_queue;
|
|
s_buffer_ptr l_buf = l_node->object ();
|
|
size_t l_i_size = l_buf->n_used ();
|
|
|
|
if (This->d_started && (l_i_size != l_size)) {
|
|
std::cerr << "fusb_ephandle_darwin::write_completed: Expected " << l_i_size
|
|
<< " bytes written; wrote " << l_size << "." << std::endl;
|
|
} else if (usb_debug > 4) {
|
|
std::cerr << "fusb_ephandle_darwin::write_completed: Wrote " << (void*) l_both
|
|
<< " (" << l_size << " Bytes)" << std::endl;
|
|
}
|
|
|
|
// set buffer's # data to 0
|
|
l_buf->n_used (0);
|
|
// make the node available for reuse
|
|
l_queue->make_node_available (l_node);
|
|
}
|
|
|
|
void
|
|
fusb_ephandle_darwin::abort ()
|
|
{
|
|
if (usb_debug) {
|
|
std::cerr << "fusb_ephandle_darwin::abort: starting." << std::endl;
|
|
}
|
|
|
|
io_return_t result = d_interface->AbortPipe (d_interfaceRef, d_pipeRef);
|
|
|
|
if (result != kIOReturnSuccess)
|
|
USB_ERROR_STR_NO_RET (- darwin_to_errno (result),
|
|
"fusb_ephandle_darwin::abort "
|
|
"(AbortPipe): %s", darwin_error_str (result));
|
|
if (usb_debug) {
|
|
std::cerr << "fusb_ephandle_darwin::abort: finished." << std::endl;
|
|
}
|
|
}
|
|
|
|
bool
|
|
fusb_ephandle_darwin::stop ()
|
|
{
|
|
if (! d_started)
|
|
return (true);
|
|
|
|
if (usb_debug) {
|
|
std::cerr << "fusb_ephandle_darwin::stop: stopping "
|
|
<< (d_input_p ? "read" : "write") << "." << std::endl;
|
|
}
|
|
|
|
d_started = false;
|
|
|
|
// abort any pending IO transfers
|
|
abort ();
|
|
|
|
// wait for write transfer to finish
|
|
wait_for_completion ();
|
|
|
|
// tell IO buffer to abort any waiting conditions
|
|
d_buffer->abort ();
|
|
|
|
// stop the run loop
|
|
CFRunLoopStop (d_CFRunLoopRef);
|
|
|
|
// wait for the runThread to stop
|
|
gruel::scoped_lock l (*d_runThreadRunning);
|
|
|
|
if (usb_debug) {
|
|
std::cerr << "fusb_ephandle_darwin::stop: " << (d_input_p ? "read" : "write")
|
|
<< " stopped." << std::endl;
|
|
}
|
|
|
|
return (true);
|
|
}
|
|
|
|
void
|
|
fusb_ephandle_darwin::wait_for_completion ()
|
|
{
|
|
if (d_queue)
|
|
while (d_queue->in_use ())
|
|
usleep (1000);
|
|
}
|