198c976f7e
that passes signal map along. This mechanisms is also used for nonuser signals like SIGKMESS, SIGKSTOP, SIGKSIG. Revised comments of many system call handlers. Renamed setpriority to nice.
68 lines
2.5 KiB
C
Executable file
68 lines
2.5 KiB
C
Executable file
#ifndef GLO_H
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#define GLO_H
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/* Global variables used in the kernel. This file contains the declarations;
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* storage space for the variables is allocated in table.c, because EXTERN is
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* defined as extern unless the _TABLE definition is seen. We rely on the
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* compiler's default initialization (0) for several global variables.
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*/
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#ifdef _TABLE
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#undef EXTERN
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#define EXTERN
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#endif
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#include <minix/config.h>
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#include "config.h"
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/* Variables relating to shutting down MINIX. */
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EXTERN char kernel_exception; /* TRUE after system exceptions */
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/* Kernel information structures. This groups vital kernel information. */
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EXTERN phys_bytes aout; /* address of a.out headers */
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EXTERN struct kinfo kinfo; /* kernel information for users */
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EXTERN struct machine machine; /* machine information for users */
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EXTERN struct kmessages kmess; /* diagnostic messages in kernel */
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EXTERN struct randomness krandom; /* gather kernel random information */
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/* Process scheduling information and the kernel reentry count. */
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EXTERN struct proc *prev_ptr; /* previously running process */
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EXTERN struct proc *proc_ptr; /* pointer to currently running process */
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EXTERN struct proc *next_ptr; /* next process to run after restart() */
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EXTERN struct proc *bill_ptr; /* process to bill for clock ticks */
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EXTERN char k_reenter; /* kernel reentry count (entry count less 1) */
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EXTERN int sched_ticks; /* keep track of quantum usage */
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EXTERN unsigned lost_ticks; /* clock ticks counted outside clock task */
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#if TEMP_CODE
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/* Declare buffer space and a bit map for notification messages. */
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EXTERN struct notification notify_buffer[NR_NOTIFY_BUFS];
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EXTERN bitchunk_t notify_bitmap[BITMAP_CHUNKS(NR_NOTIFY_BUFS)];
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#endif
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#if (CHIP == INTEL)
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/* Interrupt related variables. */
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EXTERN irq_hook_t irq_hooks[NR_IRQ_HOOKS]; /* hooks for general use */
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EXTERN irq_hook_t *irq_handlers[NR_IRQ_VECTORS];/* list of IRQ handlers */
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EXTERN int irq_actids[NR_IRQ_VECTORS]; /* IRQ ID bits active */
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EXTERN int irq_use; /* map of all in-use irq's */
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/* Miscellaneous. */
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EXTERN reg_t mon_ss, mon_sp; /* boot monitor stack */
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EXTERN int mon_return; /* true if we can return to monitor */
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/* Variables that are initialized elsewhere are just extern here. */
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extern struct system_image image[]; /* system image processes */
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extern char *t_stack[]; /* task stack space */
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extern struct segdesc_s gdt[]; /* global descriptor table */
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EXTERN _PROTOTYPE( void (*level0_func), (void) );
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#endif /* (CHIP == INTEL) */
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#if (CHIP == M68000)
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/* M68000 specific variables go here. */
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#endif
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#endif /* GLO_H */
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