glo.h

一个简单的操作系统minix的核心代码

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				src/mm/glo.h	 	 
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16200	/* EXTERN should be extern except in table.c */
16201	#ifdef _TABLE
16202	#undef EXTERN
16203	#define EXTERN
16204	#endif
16205	
16206	/* Global variables. */
16207	EXTERN struct mproc *mp;        /* ptr to 'mproc' slot of current process */
16208	EXTERN int dont_reply;          /* normally 0; set to 1 to inhibit reply */
16209	EXTERN int procs_in_use;        /* how many processes are marked as IN_USE */
16210	
16211	/* The parameters of the call are kept here. */
16212	EXTERN message mm_in;           /* the incoming message itself is kept here. */
16213	EXTERN message mm_out;          /* the reply message is built up here. */
16214	EXTERN int who;                 /* caller's proc number */
16215	EXTERN int mm_call;             /* system call number */
16216	
16217	/* The following variables are used for returning results to the caller. */
16218	EXTERN int err_code;            /* temporary storage for error number */
16219	EXTERN int result2;             /* secondary result */
16220	EXTERN char *res_ptr;           /* result, if pointer */
16221	
16222	extern _PROTOTYPE (int (*call_vec[]), (void) ); /* system call handlers */
16223	extern char core_name[];        /* file name where core images are produced */
16224	EXTERN sigset_t core_sset;      /* which signals cause core images */