Hi,
I have the following code:
DWORD WINAPI LibUSBDevice::LoopEvent(void* lpParam)
{
while (RunLoopCode)
{
try
{
Sleep(100);
struct timeval tv = { 1, 0 };
int completed =0;
//cout << "before libusb_handle_events_timeout " << std::endl;
int err = libusb_handle_events_timeout_completed(NULL, &tv,&completed );
//cout << "after libusb_handle_events_timeout " << std::endl;
if (err<0)
{
cout << "!!!!!!!!!!!!!!!!!!err calling done
libusb_handle_events_timeout!!!!!!!!!!!!" << std::endl;
}
}
catch (...)
{
cout << "!!!!!!!!!!!!unexpected exception!!!!!" << std::endl;
}
}
return 0;
}
This is in a seperator thread, which is always running, other threads will
call libusb_submit_transfer to submit read and write request simultaneously.
it crash the app, the stack trace are as following:
winusb_abort_transfers+0xf6 [c:\program
files\libusbx-1.0.12\libusb\os\windows_usb.c @ 2863]
windows_abort_transfers+0x41 [c:\program
files\libusbx-1.0.12\libusb\os\windows_usb.c @ 1929]
windows_cancel_transfer+0x51 [c:\program
files\libusbx-1.0.12\libusb\os\windows_usb.c @ 1941]
libusb_cancel_transfer+0x54 [c:\program files\libusbx-1.0.12\libusb\io.c @
1358]
handle_timeout+0x35 [c:\program files\libusbx-1.0.12\libusb\io.c @ 1770]
handle_timeouts_locked+0x110 [c:\program files\libusbx-1.0.12\libusb\io.c @
1814]
handle_timeouts+0x38 [c:\program files\libusbx-1.0.12\libusb\io.c @ 1823]
handle_events+0x258 [c:\program files\libusbx-1.0.12\libusb\io.c @ 1897]
libusb_handle_events_timeout_completed+0x9e [c:\program
files\libusbx-1.0.12\libusb\io.c @ 2029]
LibUSBDevice::LoopEvent+0x62 [c:\USB\usb_io_native\libusbdevice.cpp @ 108]
KERNEL32!BaseThreadInitThunk+0xd
ntdll!RtlUserThreadStart+0x21
Asynchronous device I/O
specifically, the following code:
if (!WinUsb_AbortPipe(winusb_handle, transfer->endpoint)) {
in windows_usb.c crash the app.
strangely enough, the catch (...) does not catch the exception.
Please advice.
Thx
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