* Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
* Distributed under the terms of the MIT License.
*/
#ifndef _DEBUG_EVENT_STREAM_H
#define _DEBUG_EVENT_STREAM_H
#include <SupportDefs.h>
class BDataIO;
struct debug_event_stream_header {
char signature[32];
uint32 version;
uint32 flags;
uint32 event_mask;
uint32 reserved;
};
#define B_DEBUG_EVENT_STREAM_SIGNATURE "Haiku debug events"
#define B_DEBUG_EVENT_STREAM_VERSION 1
enum {
B_DEBUG_EVENT_STREAM_FLAG_HOST_ENDIAN = 0x00000001,
B_DEBUG_EVENT_STREAM_FLAG_SWAPPED_ENDIAN = 0x01000000,
B_DEBUG_EVENT_STREAM_FLAG_ZIPPED = 0x00000002
};
class BDebugEventInputStream {
public:
BDebugEventInputStream();
~BDebugEventInputStream();
status_t SetTo(BDataIO* stream);
status_t SetTo(const void* data, size_t size,
bool takeOverOwnership);
void Unset();
status_t Seek(off_t streamOffset);
ssize_t ReadNextEvent(uint32* _event, uint32* _cpu,
const void** _buffer,
off_t* _streamOffset = NULL);
private:
status_t _Init();
ssize_t _Read(void* buffer, size_t size);
status_t _GetData(size_t size);
private:
BDataIO* fStream;
uint32 fFlags;
uint32 fEventMask;
uint8* fBuffer;
size_t fBufferCapacity;
size_t fBufferSize;
size_t fBufferPosition;
off_t fStreamPosition;
bool fOwnsBuffer;
};
class BDebugEventOutputStream {
public:
BDebugEventOutputStream();
~BDebugEventOutputStream();
status_t SetTo(BDataIO* stream, uint32 flags,
uint32 eventMask);
void Unset();
status_t Write(const void* buffer, size_t size);
status_t Flush();
private:
BDataIO* fStream;
uint32 fFlags;
};
#endif
