am 06a9f560: am 7989a7c8: Merge "adb: win32: fix USB device hang when resuming... (d4fd61ef) · Commits · e / os / android_system_core

adb/usb_windows.cpp

+284 −122

Original line number	Diff line number	Diff line
		@@ -33,6 +33,10 @@
		/** Structure usb_handle describes our connection to the usb device via
		AdbWinApi.dll. This structure is returned from usb_open() routine and
		is expected in each subsequent call that is accessing the device.

		Most members are protected by usb_lock, except for adb_{read,write}_pipe which
		rely on AdbWinApi.dll's handle validation and AdbCloseHandle(endpoint)'s
		ability to break a thread out of pipe IO.
		*/
		struct usb_handle {
		/// Previous entry in the list of opened usb handles
		@@ -86,6 +90,9 @@ int recognized_device(usb_handle* handle);
		/// registers usb transport for them.
		void find_devices();

		/// Kicks all USB devices
		static void kick_devices();

		/// Entry point for thread that polls (every second) for new usb interfaces.
		/// This routine calls find_devices in infinite loop.
		void* device_poll_thread(void* unused);
		@@ -111,9 +118,6 @@ void usb_kick(usb_handle* handle);
		/// Closes opened usb handle
		int usb_close(usb_handle* handle);

		/// Gets interface (device) name for an opened usb handle
		const char usb_name(usb_handle handle);

		int known_device_locked(const char* dev_name) {
		usb_handle* usb;

		@@ -177,17 +181,99 @@ void* device_poll_thread(void* unused) {
		return NULL;
		}

		static LRESULT CALLBACK _power_window_proc(HWND hwnd, UINT uMsg, WPARAM wParam,
		LPARAM lParam) {
		switch (uMsg) {
		case WM_POWERBROADCAST:
		switch (wParam) {
		case PBT_APMRESUMEAUTOMATIC:
		// Resuming from sleep or hibernation, so kick all existing USB devices
		// and then allow the device_poll_thread to redetect USB devices from
		// scratch. If we don't do this, existing USB devices will never respond
		// to us because they'll be waiting for the connect/auth handshake.
		D("Received (WM_POWERBROADCAST, PBT_APMRESUMEAUTOMATIC) notification, "
		"so kicking all USB devices\n");
		kick_devices();
		return TRUE;
		}
		}
		return DefWindowProcW(hwnd, uMsg, wParam, lParam);
		}

		static void* _power_notification_thread(void* unused) {
		// This uses a thread with its own window message pump to get power
		// notifications. If adb runs from a non-interactive service account, this
		// might not work (not sure). If that happens to not work, we could use
		// heavyweight WMI APIs to get power notifications. But for the common case
		// of a developer's interactive session, a window message pump is more
		// appropriate.
		D("Created power notification thread\n");

		// Window class names are process specific.
		static const WCHAR kPowerNotificationWindowClassName[] =
		L"PowerNotificationWindow";

		// Get the HINSTANCE corresponding to the module that _power_window_proc
		// is in (the main module).
		const HINSTANCE instance = GetModuleHandleW(NULL);
		if (!instance) {
		// This is such a common API call that this should never fail.
		fatal("GetModuleHandleW failed: %s",
		SystemErrorCodeToString(GetLastError()).c_str());
		}

		WNDCLASSEXW wndclass;
		memset(&wndclass, 0, sizeof(wndclass));
		wndclass.cbSize = sizeof(wndclass);
		wndclass.lpfnWndProc = _power_window_proc;
		wndclass.hInstance = instance;
		wndclass.lpszClassName = kPowerNotificationWindowClassName;
		if (!RegisterClassExW(&wndclass)) {
		fatal("RegisterClassExW failed: %s",
		SystemErrorCodeToString(GetLastError()).c_str());
		}

		if (!CreateWindowExW(WS_EX_NOACTIVATE, kPowerNotificationWindowClassName,
		L"ADB Power Notification Window", WS_POPUP, 0, 0, 0, 0,
		NULL, NULL, instance, NULL)) {
		fatal("CreateWindowExW failed: %s",
		SystemErrorCodeToString(GetLastError()).c_str());
		}

		MSG msg;
		while (GetMessageW(&msg, NULL, 0, 0)) {
		TranslateMessage(&msg);
		DispatchMessageW(&msg);
		}

		// GetMessageW() will return false if a quit message is posted. We don't
		// do that, but it might be possible for that to occur when logging off or
		// shutting down. Not a big deal since the whole process will be going away
		// soon anyway.
		D("Power notification thread exiting\n");

		return NULL;
		}

		void usb_init() {
		if (!adb_thread_create(device_poll_thread, nullptr)) {
		fatal_errno("cannot create input thread");
		fatal_errno("cannot create device poll thread");
		}
		if (!adb_thread_create(_power_notification_thread, nullptr)) {
		fatal_errno("cannot create power notification thread");
		}
		}

		usb_handle* do_usb_open(const wchar_t* interface_name) {
		unsigned long name_len = 0;

		// Allocate our handle
		usb_handle* ret = (usb_handle*)malloc(sizeof(usb_handle));
		if (NULL == ret)
		return NULL;
		usb_handle* ret = (usb_handle*)calloc(1, sizeof(usb_handle));
		if (NULL == ret) {
		D("Could not allocate %u bytes for usb_handle: %s\n", sizeof(usb_handle),
		strerror(errno));
		goto fail;
		}

		// Set linkers back to the handle
		ret->next = ret;
		@@ -195,11 +281,10 @@ usb_handle* do_usb_open(const wchar_t* interface_name) {

		// Create interface.
		ret->adb_interface = AdbCreateInterfaceByName(interface_name);

		if (NULL == ret->adb_interface) {
		free(ret);
		errno = GetLastError();
		return NULL;
		D("AdbCreateInterfaceByName failed: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		goto fail;
		}

		// Open read pipe (endpoint)
		@@ -207,45 +292,60 @@ usb_handle* do_usb_open(const wchar_t* interface_name) {
		AdbOpenDefaultBulkReadEndpoint(ret->adb_interface,
		AdbOpenAccessTypeReadWrite,
		AdbOpenSharingModeReadWrite);
		if (NULL != ret->adb_read_pipe) {
		if (NULL == ret->adb_read_pipe) {
		D("AdbOpenDefaultBulkReadEndpoint failed: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		goto fail;
		}

		// Open write pipe (endpoint)
		ret->adb_write_pipe =
		AdbOpenDefaultBulkWriteEndpoint(ret->adb_interface,
		AdbOpenAccessTypeReadWrite,
		AdbOpenSharingModeReadWrite);
		if (NULL != ret->adb_write_pipe) {
		// Save interface name
		unsigned long name_len = 0;
		if (NULL == ret->adb_write_pipe) {
		D("AdbOpenDefaultBulkWriteEndpoint failed: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		goto fail;
		}

		// Save interface name
		// First get expected name length
		AdbGetInterfaceName(ret->adb_interface,
		NULL,
		&name_len,
		true);
		if (0 != name_len) {
		if (0 == name_len) {
		D("AdbGetInterfaceName returned name length of zero: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		goto fail;
		}

		ret->interface_name = (char*)malloc(name_len);
		if (NULL == ret->interface_name) {
		D("Could not allocate %lu bytes for interface_name: %s\n", name_len,
		strerror(errno));
		goto fail;
		}

		if (NULL != ret->interface_name) {
		// Now save the name
		if (AdbGetInterfaceName(ret->adb_interface,
		if (!AdbGetInterfaceName(ret->adb_interface,
		ret->interface_name,
		&name_len,
		true)) {
		D("AdbGetInterfaceName failed: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		goto fail;
		}

		// We're done at this point
		return ret;
		}
		} else {
		SetLastError(ERROR_OUTOFMEMORY);
		}
		}
		}
		}

		// Something went wrong.
		int saved_errno = GetLastError();
		fail:
		if (NULL != ret) {
		usb_cleanup_handle(ret);
		free(ret);
		SetLastError(saved_errno);
		}

		return NULL;
		}
		@@ -253,92 +353,130 @@ usb_handle* do_usb_open(const wchar_t* interface_name) {
		int usb_write(usb_handle* handle, const void* data, int len) {
		unsigned long time_out = 5000;
		unsigned long written = 0;
		int ret;
		int err = 0;

		D("usb_write %d\n", len);
		if (NULL != handle) {
		if (NULL == handle) {
		D("usb_write was passed NULL handle\n");
		err = EINVAL;
		goto fail;
		}

		// Perform write
		ret = AdbWriteEndpointSync(handle->adb_write_pipe,
		if (!AdbWriteEndpointSync(handle->adb_write_pipe,
		(void*)data,
		(unsigned long)len,
		&written,
		time_out);
		int saved_errno = GetLastError();
		time_out)) {
		D("AdbWriteEndpointSync failed: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		err = EIO;
		goto fail;
		}

		if (ret) {
		// Make sure that we've written what we were asked to write
		D("usb_write got: %ld, expected: %d\n", written, len);
		if (written == (unsigned long)len) {
		if (written != (unsigned long)len) {
		// If this occurs, this code should be changed to repeatedly call
		// AdbWriteEndpointSync() until all bytes are written.
		D("AdbWriteEndpointSync was supposed to write %d, but only wrote %ld\n",
		len, written);
		err = EIO;
		goto fail;
		}

		if (handle->zero_mask && (len & handle->zero_mask) == 0) {
		// Send a zero length packet
		AdbWriteEndpointSync(handle->adb_write_pipe,
		if (!AdbWriteEndpointSync(handle->adb_write_pipe,
		(void*)data,
		0,
		&written,
		time_out);
		time_out)) {
		D("AdbWriteEndpointSync of zero length packet failed: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		err = EIO;
		goto fail;
		}
		return 0;
		}
		} else {
		// assume ERROR_INVALID_HANDLE indicates we are disconnected
		if (saved_errno == ERROR_INVALID_HANDLE)

		return 0;

		fail:
		// Any failure should cause us to kick the device instead of leaving it a
		// zombie state with potential to hang.
		if (NULL != handle) {
		D("Kicking device due to error in usb_write\n");
		usb_kick(handle);
		}
		errno = saved_errno;
		} else {
		D("usb_write NULL handle\n");
		SetLastError(ERROR_INVALID_HANDLE);
		}

		D("usb_write failed: %d\n", errno);

		D("usb_write failed\n");
		errno = err;
		return -1;
		}

		int usb_read(usb_handle handle, void data, int len) {
		unsigned long time_out = 0;
		unsigned long read = 0;
		int err = 0;

		D("usb_read %d\n", len);
		if (handle != nullptr) {
		if (NULL == handle) {
		D("usb_read was passed NULL handle\n");
		err = EINVAL;
		goto fail;
		}

		while (len > 0) {
		int ret = AdbReadEndpointSync(handle->adb_read_pipe, data, len, &read, time_out);
		int saved_errno = GetLastError();
		D("usb_write got: %ld, expected: %d, errno: %d\n", read, len, saved_errno);
		if (ret) {
		if (!AdbReadEndpointSync(handle->adb_read_pipe, data, len, &read,
		time_out)) {
		D("AdbReadEndpointSync failed: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		err = EIO;
		goto fail;
		}
		D("usb_read got: %ld, expected: %d\n", read, len);

		data = (char *)data + read;
		len -= read;
		}

		if (len == 0)
		return 0;
		} else {
		// assume ERROR_INVALID_HANDLE indicates we are disconnected
		if (saved_errno == ERROR_INVALID_HANDLE)

		fail:
		// Any failure should cause us to kick the device instead of leaving it a
		// zombie state with potential to hang.
		if (NULL != handle) {
		D("Kicking device due to error in usb_read\n");
		usb_kick(handle);
		break;
		}
		errno = saved_errno;
		}
		} else {
		D("usb_read NULL handle\n");
		SetLastError(ERROR_INVALID_HANDLE);
		}

		D("usb_read failed: %d\n", errno);

		D("usb_read failed\n");
		errno = err;
		return -1;
		}

		// Wrapper around AdbCloseHandle() that logs diagnostics.
		static void _adb_close_handle(ADBAPIHANDLE adb_handle) {
		if (!AdbCloseHandle(adb_handle)) {
		D("AdbCloseHandle(%p) failed: %s\n", adb_handle,
		SystemErrorCodeToString(GetLastError()).c_str());
		}
		}

		void usb_cleanup_handle(usb_handle* handle) {
		D("usb_cleanup_handle\n");
		if (NULL != handle) {
		if (NULL != handle->interface_name)
		free(handle->interface_name);
		// AdbCloseHandle(pipe) will break any threads out of pending IO calls and
		// wait until the pipe no longer uses the interface. Then we can
		// AdbCloseHandle() the interface.
		if (NULL != handle->adb_write_pipe)
		AdbCloseHandle(handle->adb_write_pipe);
		_adb_close_handle(handle->adb_write_pipe);
		if (NULL != handle->adb_read_pipe)
		AdbCloseHandle(handle->adb_read_pipe);
		_adb_close_handle(handle->adb_read_pipe);
		if (NULL != handle->adb_interface)
		AdbCloseHandle(handle->adb_interface);
		_adb_close_handle(handle->adb_interface);

		handle->interface_name = NULL;
		handle->adb_write_pipe = NULL;
		@@ -347,16 +485,22 @@ void usb_cleanup_handle(usb_handle* handle) {
		}
		}

		static void usb_kick_locked(usb_handle* handle) {
		// The reason the lock must be acquired before calling this function is in
		// case multiple threads are trying to kick the same device at the same time.
		usb_cleanup_handle(handle);
		}

		void usb_kick(usb_handle* handle) {
		D("usb_kick\n");
		if (NULL != handle) {
		adb_mutex_lock(&usb_lock);

		usb_cleanup_handle(handle);
		usb_kick_locked(handle);

		adb_mutex_unlock(&usb_lock);
		} else {
		SetLastError(ERROR_INVALID_HANDLE);
		errno = ERROR_INVALID_HANDLE;
		errno = EINVAL;
		}
		}

		@@ -384,16 +528,6 @@ int usb_close(usb_handle* handle) {
		return 0;
		}

		const char usb_name(usb_handle handle) {
		if (NULL == handle) {
		SetLastError(ERROR_INVALID_HANDLE);
		errno = ERROR_INVALID_HANDLE;
		return NULL;
		}

		return (const char*)handle->interface_name;
		}

		int recognized_device(usb_handle* handle) {
		if (NULL == handle)
		return 0;
		@@ -403,6 +537,8 @@ int recognized_device(usb_handle* handle) {

		if (!AdbGetUsbDeviceDescriptor(handle->adb_interface,
		&device_desc)) {
		D("AdbGetUsbDeviceDescriptor failed: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		return 0;
		}

		@@ -411,6 +547,8 @@ int recognized_device(usb_handle* handle) {

		if (!AdbGetUsbInterfaceDescriptor(handle->adb_interface,
		&interf_desc)) {
		D("AdbGetUsbInterfaceDescriptor failed: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		return 0;
		}

		@@ -427,6 +565,10 @@ int recognized_device(usb_handle* handle) {
		// assuming zero is a valid bulk endpoint ID
		if (AdbGetEndpointInformation(handle->adb_interface, 0, &endpoint_info)) {
		handle->zero_mask = endpoint_info.max_packet_size - 1;
		D("device zero_mask: 0x%x\n", handle->zero_mask);
		} else {
		D("AdbGetEndpointInformation failed: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		}
		}

		@@ -448,8 +590,11 @@ void find_devices() {
		ADBAPIHANDLE enum_handle =
		AdbEnumInterfaces(usb_class_id, true, true, true);

		if (NULL == enum_handle)
		if (NULL == enum_handle) {
		D("AdbEnumInterfaces failed: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		return;
		}

		while (AdbNextInterface(enum_handle, next_interface, &entry_buffer_size)) {
		// TODO: FIXME - temp hack converting wchar_t into char.
		@@ -486,7 +631,8 @@ void find_devices() {
		free(handle);
		}
		} else {
		D("cannot get serial number\n");
		D("cannot get serial number: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		usb_cleanup_handle(handle);
		free(handle);
		}
		@@ -500,5 +646,21 @@ void find_devices() {
		entry_buffer_size = sizeof(entry_buffer);
		}

		AdbCloseHandle(enum_handle);
		if (GetLastError() != ERROR_NO_MORE_ITEMS) {
		// Only ERROR_NO_MORE_ITEMS is expected at the end of enumeration.
		D("AdbNextInterface failed: %s\n",
		SystemErrorCodeToString(GetLastError()).c_str());
		}

		_adb_close_handle(enum_handle);
		}

		static void kick_devices() {
		// Need to acquire lock to safely walk the list which might be modified
		// by another thread.
		adb_mutex_lock(&usb_lock);
		for (usb_handle* usb = handle_list.next; usb != &handle_list; usb = usb->next) {
		usb_kick_locked(usb);
		}
		adb_mutex_unlock(&usb_lock);
		}