kernel/fs/fifo.cpp

71 			struct ring_buffer*	fBuffer;
175 									{ return fBuffer.Readable(); }
177 									{ return fBuffer.Writable(); }
205 			RingBuffer			fBuffer;
258 	fBuffer(NULL)
272 	if (fBuffer != NULL)
275 	fBuffer = create_ring_buffer(VFS_FIFO_BUFFER_CAPACITY);
276 	return fBuffer != NULL ? B_OK : B_NO_MEMORY;
283 	if (fBuffer != NULL) {
284 		delete_ring_buffer(fBuffer);
285 		fBuffer = NULL;
293 	if (fBuffer == NULL)
299 		? ring_buffer_user_write(fBuffer, (const uint8*)buffer, length)
300 		: ring_buffer_write(fBuffer, (const uint8*)buffer, length);
307 	if (fBuffer == NULL)
313 		? ring_buffer_user_read(fBuffer, (uint8*)buffer, length)
314 		: ring_buffer_read(fBuffer, (uint8*)buffer, length);
321 	if (fBuffer == NULL)
324 	return ring_buffer_peek(fBuffer, offset, (uint8*)buffer, length);
331 	return fBuffer != NULL ? ring_buffer_readable(fBuffer) : 0;
338 	return fBuffer != NULL ? ring_buffer_writable(fBuffer) : 0;
407 				|| (fBuffer.Writable() < minToWrite && fReaderCount > 0)) {
436 		size_t toWrite = (fActive ? fBuffer.Writable() : 0);
441 			ssize_t bytesWritten = fBuffer.Write(data, toWrite, isUser);
479 	while (fBuffer.Readable() == 0) {
495 	size_t toRead = fBuffer.Readable();
499 	ssize_t bytesRead = fBuffer.Read(data, toRead, isUser);
552 	size_t writable = fBuffer.Writable();
581 	if (fBuffer.Readable() > 0) {
592 	if (bytes > 0 && fBuffer.Readable() == bytes) {
611 		TRACE("  buffer readable: %zu\n", fBuffer.Readable());
612 		if (fBuffer.Readable() == 0) {
644 		fBuffer.CreateBuffer();
690 		fBuffer.DeleteBuffer();
715 		if ((event == B_SELECT_WRITE && fBuffer.Writable() > 0)
720 		if ((event == B_SELECT_READ && fBuffer.Readable() > 0)
773 	kprintf("  %zu bytes buffered\n", fBuffer.Readable());
775 	if (dumpData && fBuffer.Readable() > 0) {
779 				fBuffer(buffer),
786 				return fOffset < fBuffer.Readable();
792 				if (fOffset < fBuffer.Readable()) {
793 					fBuffer.Peek(fOffset, &byte, 1);
806 			const RingBuffer&	fBuffer;
810 		DataProvider dataProvider(fBuffer);
811 		BKernel::print_hex_dump(dataProvider, fBuffer.Readable());