diff options
Diffstat (limited to 'sys/dev/raidframe/rf_debugprint.c')
| -rw-r--r-- | sys/dev/raidframe/rf_debugprint.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/sys/dev/raidframe/rf_debugprint.c b/sys/dev/raidframe/rf_debugprint.c new file mode 100644 index 00000000000..573d53ae71a --- /dev/null +++ b/sys/dev/raidframe/rf_debugprint.c @@ -0,0 +1,186 @@ +/* $OpenBSD: rf_debugprint.c,v 1.1 1999/01/11 14:29:13 niklas Exp $ */ +/* $NetBSD: rf_debugprint.c,v 1.1 1998/11/13 04:20:28 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. + */ + +/* : + * Log: rf_debugprint.c,v + * Revision 1.13 1996/08/07 21:08:31 jimz + * remove bogus ; from mutex decl + * + * Revision 1.12 1996/06/10 11:55:47 jimz + * Straightened out some per-array/not-per-array distinctions, fixed + * a couple bugs related to confusion. Added shutdown lists. Removed + * layout shutdown function (now subsumed by shutdown lists). + * + * Revision 1.11 1996/06/05 18:06:02 jimz + * Major code cleanup. The Great Renaming is now done. + * Better modularity. Better typing. Fixed a bunch of + * synchronization bugs. Made a lot of global stuff + * per-desc or per-array. Removed dead code. + * + * Revision 1.10 1996/05/30 23:22:16 jimz + * bugfixes of serialization, timing problems + * more cleanup + * + * Revision 1.9 1996/05/27 18:56:37 jimz + * more code cleanup + * better typing + * compiles in all 3 environments + * + * Revision 1.8 1996/05/23 00:33:23 jimz + * code cleanup: move all debug decls to rf_options.c, all extern + * debug decls to rf_options.h, all debug vars preceded by rf_ + * + * Revision 1.7 1996/05/20 16:16:06 jimz + * switch to rf_{mutex,cond}_{init,destroy} + * + * Revision 1.6 1996/05/18 19:51:34 jimz + * major code cleanup- fix syntax, make some types consistent, + * add prototypes, clean out dead code, et cetera + * + * Revision 1.5 1995/12/01 16:00:45 root + * added copyright info + * + */ + +#include "rf_types.h" +#include "rf_threadstuff.h" +#include "rf_debugprint.h" +#include "rf_general.h" +#include "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; +#ifndef KERNEL + FILE *fp; +#endif /* !KERNEL */ + + if (!rf_debugPrintUseBuffer) + return; + + RF_LOCK_MUTEX(rf_debug_print_mutex); +#ifndef KERNEL + fp = (fname) ? fopen(fname,"w") : stdout; + if (!fp) {printf("Unable to open file %s for writing\n",fname); return;} + for (i=rf_debugprint_index+1; i != rf_debugprint_index; i = (i+1)&BUFMASK) if (rf_debugprint_buf[i].cstring) + fprintf(fp,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); + fprintf(fp,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); + fclose(fp); +#else /* !KERNEL */ + 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); +#endif /* !KERNEL */ + RF_UNLOCK_MUTEX(rf_debug_print_mutex); +} |