extern int MyPid; /* the shell's process id */
extern int MyPgrp; /* the shell's process group */
extern int TermPgrp; /* the terminal's process group */
#define JSTOPPED (1L<<1)
#define JRUNNING (1L<<2)
#define JNEEDNOTE (1L<<3)
#define PTTYINPUT (1L<<1)
#define PTTYOUTPUT (1L<<2)
#define PSTOPSIGNAL (1L<<3)
#define PSTOPPED (1L<<4)
#define PDONE (1L<<5)
#define PEXITED (1L<<6)
#define PCOREDUMP (1L<<7)
#define PSIGNALED (1L<<8)
struct _PROC {
int pid;
int status;
int exitcode;
int termsig;
struct _PROC *next;
};
typedef struct _PROC PROC;
struct _JOB {
int status;
int pgrp;
PROC *procs;
};
typedef struct _JOB JOB;
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