Memory leaks
I wrote a firmware to read ov7725 camera for cypress FX2LP.
I wrote a code for cypress generic driver on windows -> no leaks
I wrote a code libusb_win32 for windows -> no leaks
I wrote a code for libusbx-1.0.17 in sync mode for ubuntu -> no leaks
But in async mode with libusbx-1.0.17 -> memory leaks
Each time I read a video frame in async mode with libusbx-1.0.1x it loose
~100bytes.
You can see this leaks in gnome-system-monitor after some time
my code is:
void cb_response_in(struct libusb_transfer *transfer){
int * completed = transfer->user_data;
*completed = 1;
}
int get_frame(unsigned char * data, int len ){
int r = 0;
int completed = 0;
unsigned char tmp[1];
//Request a video frame to firmware...
r=libusb_control_transfer( devh,
LIBUSB_REQUEST_TYPE_VENDOR |
LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_OUT,
0xA8,
0x00,
0,
tmp,
0,
500);
transfer_response_in = libusb_alloc_transfer(0);
libusb_fill_bulk_transfer( transfer_response_in, devh, EP_RESPONSE,
data,
len,
cb_response_in,
&completed,
500);
r = libusb_submit_transfer(transfer_response_in);
if ( r != 0){
printf("libusb_submit_transfer(transfer_response_in); = %d",r);
}
struct timeval tv;
tv.tv_sec = 0; // seconds
tv.tv_usec = 100; // milliseconds ( .1 sec)
while (!completed) {
r = libusb_handle_events_timeout(NULL, &tv);
if (r < 0){ // negative values are errors
break;
}
}
return r;
}
Anybody can help me ?
thanks
Max.
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