diff options
Diffstat (limited to 'sys/dev/raidframe/rf_debugprint.c')
| -rw-r--r-- | sys/dev/raidframe/rf_debugprint.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/sys/dev/raidframe/rf_debugprint.c b/sys/dev/raidframe/rf_debugprint.c new file mode 100644 index 0000000..6c96023 --- /dev/null +++ b/sys/dev/raidframe/rf_debugprint.c @@ -0,0 +1,134 @@ +/* $FreeBSD$ */ +/* $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); +} |
