#define NO_ACTION 0
#define UPDATE 1
#define REDO 2
#define CONTINUE 3

#define TRUE 1
#define FALSE 0
#define NOSTATS -1

#define GET_STATS -2
extern int master_slave_trace;
extern void (*master_slave_trace_cmd)();/*takes two arg's: dest, task/result */
extern int task_size, result_size;

void master_slave();
void raw_master_slave();
int is_up_to_date();
int continuation();


/* This should be randomized and neg, so as not to conflict with user one? */
#define NO_PENDING_TASK (void * )-1000

#ifndef EXTERN
#define EXTERN extern
#endif
EXTERN int mas_slave_is_task;
EXTERN int mas_slave_is_msg;
EXTERN void *mas_slave_msg_ptr;
EXTERN int mas_slave_msg_size;
EXTERN int mas_slave_msg_is_int;
#define MSG(PTR,SIZE) \
 (mas_slave_is_msg = TRUE, mas_slave_msg_size = SIZE, mas_slave_msg_ptr = PTR,\
  error_if_msg_on_stack(mas_slave_msg_ptr), mas_slave_msg_ptr)

#define NOTASK ((void *)(mas_slave_is_task = FALSE))

#define MARKER 2074215192 /* hack for sending int inside pointer */
/* Cast (void *) to int, avoid warnings from compiler about truncation */
#define INT(x) ((char *)x - (char *)0)