log.h

来自「minix操作系统最新版本（3.1.1）的源代码」· C头文件 代码 · 共 38 行

/* Includes. */
#include "../drivers.h"
#include "../libdriver/driver.h"
#include <minix/type.h>
#include <minix/const.h>
#include <minix/com.h>
#include <sys/types.h>
#include <minix/ipc.h>

/* Constants and types. */

#define LOG_SIZE	(50*1024) 
#define SUSPENDABLE 	      1

struct logdevice {
	char log_buffer[LOG_SIZE];
	int	log_size,	/* no. of bytes in log buffer */
		log_read,	/* read mark */
		log_write;	/* write mark */
#if SUSPENDABLE
	int log_proc_nr,
		log_source,
		log_iosize,
		log_revive_alerted,
		log_status;	/* proc that is blocking on read */
	vir_bytes log_user_vir;
#endif
	int	log_selected, log_select_proc,
		log_select_alerted, log_select_ready_ops;
};

/* Function prototypes. */
_PROTOTYPE( void kputc, (int c)						);
_PROTOTYPE( int do_new_kmess, (message *m)				);
_PROTOTYPE( int do_diagnostics, (message *m)				);
_PROTOTYPE( void log_append, (char *buf, int len)				);