#ifndef __TRACE_H__
#define __TRACE_H__

enum STATE { INIT=0, RUN=1, EXIT=2, PANIC=-1 };

struct ProcessDesc {
  pid_t pid;
  long count;
  long nr;
  int pid_status;
  enum STATE state;
};

struct TraceAction {
  // data
  void *data;
  
  // methods
  int (*init)   (struct TraceAction *this, int argc, char **argv, struct ProcessDesc *pd);
  int (*action) (struct TraceAction *this, ssv_t *state, struct ProcessDesc *pd);
  int (*cleanup)(struct TraceAction *this, ssv_t *last, struct ProcessDesc *pd);
};

extern FILE *openTrace(char *basename);

// You must provide this function and within it initialize the action object to
// your methods and data. This is called once after you have been loaded.
extern int SetupAction(struct TraceAction *action);
#endif