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/* $FreeBSD$ */
/* $NetBSD: rf_debugprint.c,v 1.3 1999/02/05 00:06:08 oster Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Mark Holland
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* Code to do debug printfs. Calls to rf_debug_printf cause the corresponding
* information to be printed to a circular buffer rather than the screen.
* The point is to try and minimize the timing variations induced by the
* printfs, and to capture only the printf's immediately preceding a failure.
*/
#include <dev/raidframe/rf_types.h>
#include <dev/raidframe/rf_threadstuff.h>
#include <dev/raidframe/rf_debugprint.h>
#include <dev/raidframe/rf_general.h>
#include <dev/raidframe/rf_options.h>
#include <sys/param.h>
struct RF_Entry_s {
char *cstring;
void *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
};
/* space for 1k lines */
#define BUFSHIFT 10
#define BUFSIZE (1<<BUFSHIFT)
#define BUFMASK (BUFSIZE-1)
static struct RF_Entry_s rf_debugprint_buf[BUFSIZE];
static int rf_debugprint_index = 0;
RF_DECLARE_STATIC_MUTEX(rf_debug_print_mutex)
int rf_ConfigureDebugPrint(listp)
RF_ShutdownList_t **listp;
{
int rc;
rc = rf_create_managed_mutex(listp, &rf_debug_print_mutex);
if (rc) {
RF_ERRORMSG3("Unable to init mutex file %s line %d rc=%d\n", __FILE__,
__LINE__, rc);
return (rc);
}
rf_clear_debug_print_buffer();
return (0);
}
void
rf_clear_debug_print_buffer()
{
int i;
for (i = 0; i < BUFSIZE; i++)
rf_debugprint_buf[i].cstring = NULL;
rf_debugprint_index = 0;
}
void
rf_debug_printf(s, a1, a2, a3, a4, a5, a6, a7, a8)
char *s;
void *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
{
int idx;
if (rf_debugPrintUseBuffer) {
RF_LOCK_MUTEX(rf_debug_print_mutex);
idx = rf_debugprint_index;
rf_debugprint_index = (rf_debugprint_index + 1) & BUFMASK;
RF_UNLOCK_MUTEX(rf_debug_print_mutex);
rf_debugprint_buf[idx].cstring = s;
rf_debugprint_buf[idx].a1 = a1;
rf_debugprint_buf[idx].a2 = a2;
rf_debugprint_buf[idx].a3 = a3;
rf_debugprint_buf[idx].a4 = a4;
rf_debugprint_buf[idx].a5 = a5;
rf_debugprint_buf[idx].a6 = a6;
rf_debugprint_buf[idx].a7 = a7;
rf_debugprint_buf[idx].a8 = a8;
} else {
printf(s, a1, a2, a3, a4, a5, a6, a7, a8);
}
}
void
rf_print_debug_buffer()
{
rf_spill_debug_buffer(NULL);
}
void
rf_spill_debug_buffer(fname)
char *fname;
{
int i;
if (!rf_debugPrintUseBuffer)
return;
RF_LOCK_MUTEX(rf_debug_print_mutex);
for (i = rf_debugprint_index + 1; i != rf_debugprint_index; i = (i + 1) & BUFMASK)
if (rf_debugprint_buf[i].cstring)
printf(rf_debugprint_buf[i].cstring, rf_debugprint_buf[i].a1, rf_debugprint_buf[i].a2, rf_debugprint_buf[i].a3,
rf_debugprint_buf[i].a4, rf_debugprint_buf[i].a5, rf_debugprint_buf[i].a6, rf_debugprint_buf[i].a7, rf_debugprint_buf[i].a8);
printf(rf_debugprint_buf[i].cstring, rf_debugprint_buf[i].a1, rf_debugprint_buf[i].a2, rf_debugprint_buf[i].a3,
rf_debugprint_buf[i].a4, rf_debugprint_buf[i].a5, rf_debugprint_buf[i].a6, rf_debugprint_buf[i].a7, rf_debugprint_buf[i].a8);
RF_UNLOCK_MUTEX(rf_debug_print_mutex);
}
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