2003-11-12 Marco Gerards <metgerards@student.han.nl>
* disk/i386/pc/biosdisk.c (pupa_biosdisk_open): Correctly check for available extensions. * include/pupa/i386/pc/time.h: New file. * kern/disk.c: Include <pupa/machine/time.h>. (PUPA_CACHE_TIMEOUT): New macro. (pupa_last_time): New variable. (pupa_disk_open): Flush the cache when there was a timeout. (pupa_disk_close): Reset the timer. * kern/i386/pc/startup.S (pupa_get_rtc): Renamed from pupa_currticks. * util/misc.c: Include <sys/times.h> (pupa_get_rtc): New function.
This commit is contained in:
marco_g
parent
c4adbd32e9
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8e72a9c0e3
16
ChangeLog
16
ChangeLog
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@ -1,3 +1,19 @@
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2003-11-12 Marco Gerards <metgerards@student.han.nl>
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* disk/i386/pc/biosdisk.c (pupa_biosdisk_open): Correctly check
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for available extensions.
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* include/pupa/i386/pc/time.h: New file.
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* kern/disk.c: Include <pupa/machine/time.h>.
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(PUPA_CACHE_TIMEOUT): New macro.
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(pupa_last_time): New variable.
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(pupa_disk_open): Flush the cache when there was a timeout.
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(pupa_disk_close): Reset the timer.
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* kern/i386/pc/startup.S (pupa_get_rtc): Renamed from
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pupa_currticks.
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* util/misc.c: Include <sys/times.h>
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(pupa_get_rtc): New function.
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2003-11-09 Jeroen Dekkers <jeroen@dekkers.cx>
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* fs/ext2.c (struct pupa_ext2_inode): Declare struct datablocks
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@ -2,6 +2,7 @@
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* PUPA -- Preliminary Universal Programming Architecture for GRUB
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* Copyright (C) 1999,2000,2001,2002 Free Software Foundation, Inc.
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* Copyright (C) 2002 Yoshinori K. Okuji <okuji@enbug.org>
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* Copyright (C) 2003 Marco Gerards <metgerards@student.han.nl>
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*
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* PUPA is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -159,7 +160,7 @@ pupa_biosdisk_open (const char *name, pupa_disk_t disk)
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/* Clear out the DRP. */
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pupa_memset (drp, 0, sizeof (*drp));
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drp->size = sizeof (*drp);
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if (pupa_biosdisk_get_diskinfo_int13_extensions (drive, drp))
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if (!pupa_biosdisk_get_diskinfo_int13_extensions (drive, drp))
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{
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data->flags = PUPA_BIOSDISK_FLAG_LBA;
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@ -2,7 +2,7 @@
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/*
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* PUPA -- Preliminary Universal Programming Architecture for GRUB
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* Copyright (C) 2002 Yoshinori K. Okuji <okuji@enbug.org>
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* Copyright (C) 2002 Marco Gerards <metgerards@student.han.nl>
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* Copyright (C) 2003 Marco Gerards <metgerards@student.han.nl>
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*
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* PUPA is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -0,0 +1,33 @@
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/*
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* PUPA -- Preliminary Universal Programming Architecture for GRUB
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* Copyright (C) 2003 Marco Gerards <metgerards@student.han.nl>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef KERNEL_TIME_HEADER
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#define KERNEL_TIME_HEADER 1
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#ifdef PUPA_UTIL
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# include <time.h>
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# define PUPA_TICKS_PER_SECOND CLOCKS_PER_SEC
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#else
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# define PUPA_TICKS_PER_SECOND 18
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#endif
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/* Return the real time in ticks. */
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pupa_uint32_t pupa_get_rtc (void);
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#endif /* ! KERNEL_TIME_HEADER */
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20
kern/disk.c
20
kern/disk.c
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@ -24,6 +24,13 @@
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#include <pupa/types.h>
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#include <pupa/machine/partition.h>
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#include <pupa/misc.h>
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#include <pupa/machine/time.h>
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#define PUPA_CACHE_TIMEOUT 2
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/* The last time the disk was used. */
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static unsigned long pupa_last_time = 0;
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/* Disk cache. */
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struct pupa_disk_cache
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@ -194,6 +201,7 @@ pupa_disk_open (const char *name)
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pupa_disk_t disk;
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pupa_disk_dev_t dev;
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char *raw = (char *) name;
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unsigned long current_time;
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disk = (pupa_disk_t) pupa_malloc (sizeof (*disk));
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if (! disk)
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@ -247,6 +255,15 @@ pupa_disk_open (const char *name)
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if (p)
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disk->partition = pupa_partition_probe (disk, p + 1);
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/* The cache will be invalidated about 2 seconds after a device was
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closed. */
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current_time = pupa_get_rtc ();
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if (current_time > pupa_last_time + PUPA_CACHE_TIMEOUT * PUPA_TICKS_PER_SECOND)
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pupa_disk_cache_invalidate_all ();
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pupa_last_time = current_time;
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fail:
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if (raw && raw != name)
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@ -267,6 +284,9 @@ pupa_disk_close (pupa_disk_t disk)
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if (disk->dev && disk->dev->close)
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(disk->dev->close) (disk);
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/* Reset the timer. */
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pupa_last_time = pupa_get_rtc ();
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pupa_free (disk->partition);
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pupa_free ((void *) disk->name);
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pupa_free (disk);
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@ -2,6 +2,7 @@
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* PUPA -- Preliminary Universal Programming Architecture for GRUB
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* Copyright (C) 1999,2000,2001,2002 Free Software Foundation, Inc.
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* Copyright (C) 2002,2003 Yoshinori K. Okuji <okuji@enbug.org>
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* Copyright (C) 2003 Marco Gerards <metgerards@student.han.nl>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -1492,11 +1493,11 @@ gottime:
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/*
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* pupa_currticks()
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* pupa_get_rtc()
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* return the real time in ticks, of which there are about
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* 18-20 per second
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*/
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FUNCTION(pupa_currticks)
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FUNCTION(pupa_get_rtc)
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pushl %ebp
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call prot_to_real /* enter real mode */
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10
util/misc.c
10
util/misc.c
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@ -1,6 +1,7 @@
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/*
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* PUPA -- Preliminary Universal Programming Architecture for GRUB
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* Copyright (C) 2002,2003 Yoshinori K. Okuji <okuji@enbug.org>
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* Copyright (C) 2003 Marco Gerards <metgerards@student.han.nl>
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*
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* PUPA is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -23,6 +24,7 @@
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/times.h>
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#include <pupa/util/misc.h>
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#include <pupa/mm.h>
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@ -198,3 +200,11 @@ pupa_putchar (int c)
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{
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putchar (c);
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}
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pupa_uint32_t
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pupa_get_rtc (void)
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{
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struct tms currtime;
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return times (&currtime);
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}
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