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#ifndef __TRACE_TRACEBUFFER_H
#define __TRACE_TRACEBUFFER_H
#include <stdint.h>
#include <stdlib.h>
#include <new>
#include <limits.h>
#include <sys/task.h>
struct traceEntry
{
uint64_t component;
tid_t tid;
uint16_t length;
uint32_t hash;
uint64_t timestamp;
uint32_t line;
uint64_t values[0];
};
class TracePage
{
public:
TracePage() : next(NULL), size(0) {};
TracePage* setNext(TracePage*);
TracePage* getNext() { return next; };
traceEntry* claimEntry(size_t size);
private:
TracePage* volatile next;
uint64_t size;
};
class TraceBuffer
{
public:
TraceBuffer()
{
first = last = new (malloc(PAGE_SIZE)) TracePage();
}
traceEntry* claimEntry(size_t size);
private:
TracePage* first;
TracePage* volatile last;
};
#endif
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