c63dab466c
Also some minor style cleanups.
209 lines
5.6 KiB
C
209 lines
5.6 KiB
C
/* $NetBSD: rf_debugMem.c,v 1.7 2000/01/07 03:40:59 oster Exp $ */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Daniel Stodolsky, Mark Holland, Jim Zelenka
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/* debugMem.c: memory usage debugging stuff.
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* Malloc, Calloc, and Free are #defined everywhere
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* to do_malloc, do_calloc, and do_free.
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*
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* if RF_UTILITY is nonzero, it means were compiling one of the
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* raidframe utility programs, such as rfctrl or smd. In this
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* case, we eliminate all references to the threads package
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* and to the allocation list stuff.
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*/
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#include <dev/raidframe/rf_types.h>
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#include <dev/raidframe/rf_threadstuff.h>
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#include <dev/raidframe/rf_options.h>
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#include <dev/raidframe/rf_debugMem.h>
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#include <dev/raidframe/rf_general.h>
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#if defined(__FreeBSD__)
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#include <sys/kernel.h>
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MALLOC_DEFINE(M_RAIDFRAME, "rfbuf", "Buffers for RAIDframe operation");
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#endif
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static long tot_mem_in_use = 0;
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/* Hash table of information about memory allocations */
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#define RF_MH_TABLESIZE 1000
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struct mh_struct {
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void *address;
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int size;
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int line;
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char *filen;
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char allocated;
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struct mh_struct *next;
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};
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static struct mh_struct *mh_table[RF_MH_TABLESIZE];
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RF_DECLARE_MUTEX(rf_debug_mem_mutex)
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static int mh_table_initialized = 0;
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static void memory_hash_insert(void *addr, int size, int line, char *filen);
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static int memory_hash_remove(void *addr, int sz);
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void
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rf_record_malloc(p, size, line, filen)
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void *p;
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int size, line;
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char *filen;
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{
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RF_ASSERT(size != 0);
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/* RF_LOCK_MUTEX(rf_debug_mem_mutex); */
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memory_hash_insert(p, size, line, filen);
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tot_mem_in_use += size;
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/* RF_UNLOCK_MUTEX(rf_debug_mem_mutex); */
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if ((long) p == rf_memDebugAddress) {
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printf("Allocate: debug address allocated from line %d file %s\n", line, filen);
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}
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}
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void
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rf_unrecord_malloc(p, sz)
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void *p;
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int sz;
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{
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int size;
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/* RF_LOCK_MUTEX(rf_debug_mem_mutex); */
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size = memory_hash_remove(p, sz);
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tot_mem_in_use -= size;
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/* RF_UNLOCK_MUTEX(rf_debug_mem_mutex); */
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if ((long) p == rf_memDebugAddress) {
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printf("Free: Found debug address\n"); /* this is really only a
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* flag line for gdb */
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}
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}
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void
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rf_print_unfreed()
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{
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int i, foundone = 0;
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struct mh_struct *p;
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for (i = 0; i < RF_MH_TABLESIZE; i++) {
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for (p = mh_table[i]; p; p = p->next)
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if (p->allocated) {
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if (!foundone)
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printf("\n\nThere are unfreed memory locations at program shutdown:\n");
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foundone = 1;
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printf("Addr 0x%lx Size %d line %d file %s\n",
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(long) p->address, p->size, p->line, p->filen);
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}
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}
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if (tot_mem_in_use) {
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printf("%ld total bytes in use\n", tot_mem_in_use);
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}
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}
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int
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rf_ConfigureDebugMem(listp)
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RF_ShutdownList_t **listp;
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{
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int i, rc;
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rc = rf_create_managed_mutex(listp, &rf_debug_mem_mutex);
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if (rc) {
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RF_ERRORMSG3("Unable to init mutex file %s line %d rc=%d\n", __FILE__,
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__LINE__, rc);
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return (rc);
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}
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if (rf_memDebug) {
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for (i = 0; i < RF_MH_TABLESIZE; i++)
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mh_table[i] = NULL;
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mh_table_initialized = 1;
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}
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return (0);
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}
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#define HASHADDR(_a_) ( (((unsigned long) _a_)>>3) % RF_MH_TABLESIZE )
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static void
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memory_hash_insert(addr, size, line, filen)
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void *addr;
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int size, line;
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char *filen;
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{
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unsigned long bucket = HASHADDR(addr);
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struct mh_struct *p;
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RF_ASSERT(mh_table_initialized);
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/* search for this address in the hash table */
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for (p = mh_table[bucket]; p && (p->address != addr); p = p->next);
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if (!p) {
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RF_Malloc(p, sizeof(struct mh_struct), (struct mh_struct *));
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RF_ASSERT(p);
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p->next = mh_table[bucket];
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mh_table[bucket] = p;
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p->address = addr;
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p->allocated = 0;
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}
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if (p->allocated) {
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printf("ERROR: reallocated address 0x%lx from line %d, file %s without intervening free\n", (long) addr, line, filen);
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printf(" last allocated from line %d file %s\n", p->line, p->filen);
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RF_ASSERT(0);
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}
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p->size = size;
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p->line = line;
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p->filen = filen;
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p->allocated = 1;
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}
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static int
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memory_hash_remove(addr, sz)
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void *addr;
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int sz;
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{
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unsigned long bucket = HASHADDR(addr);
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struct mh_struct *p;
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RF_ASSERT(mh_table_initialized);
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for (p = mh_table[bucket]; p && (p->address != addr); p = p->next);
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if (!p) {
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printf("ERROR: freeing never-allocated address 0x%lx\n", (long) addr);
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RF_PANIC();
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}
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if (!p->allocated) {
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printf("ERROR: freeing unallocated address 0x%lx. Last allocation line %d file %s\n", (long) addr, p->line, p->filen);
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RF_PANIC();
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}
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if (sz > 0 && p->size != sz) { /* you can suppress this error by
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* using a negative value as the size
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* to free */
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printf("ERROR: incorrect size at free for address 0x%lx: is %d should be %d. Alloc at line %d of file %s\n", (unsigned long) addr, sz, p->size, p->line, p->filen);
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RF_PANIC();
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}
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p->allocated = 0;
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return (p->size);
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}
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