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//
// Utility Routines
//
// $Id: Util.C,v 4.0.2.2.2.1 1999/07/20 16:15:52 geert Exp $
//
// Copyright (C) 1996-1999 Department of Computer Science, K.U.Leuven, Belgium
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "waili/Types.h"
#include "waili/Util.h"
#include "exception"
// Program Failure
static char ERRSTR[512];
void Die(const char *fmt, ...)
{
ERRSTR[0]=0;
va_list args;
va_start(args, fmt);
vsnprintf(ERRSTR+strlen(ERRSTR), 512, fmt, args);
va_end(args);
fprintf(stderr,ERRSTR);
//exception e;//=new exception();
//e->what=ERRSTR;
char *e=ERRSTR;
throw e;
}
// ----------------------------------------------------------------------------
#ifdef TRACK_MEMORY
// Memory Tracking
#define MAX_HASH (31)
#define MEMTRACK_MAGIC (0x4d74724d) // MtrM
struct MemChunk {
u32 Magic;
struct MemChunk *Next;
size_t Size;
bool IsArray;
// sizeof(struct MemChunk) == 16
u_char Address[0];
};
static struct MemChunk *MemChunks[MAX_HASH] = { 0, };
static size_t AllocatedMemory = 0;
static void AddMemChunk(struct MemChunk *chunk)
{
u_int hash = (u_int)chunk % MAX_HASH;
chunk->Magic = MEMTRACK_MAGIC;
chunk->Next = MemChunks[hash];
MemChunks[hash] = chunk;
AllocatedMemory += chunk->Size;
}
static void RemMemChunk(struct MemChunk *chunk)
{
u_int hash = (u_int)chunk % MAX_HASH;
struct MemChunk **p = &MemChunks[hash];
const char *msg;
switch (chunk->Magic) {
case MEMTRACK_MAGIC:
for (p = &MemChunks[hash]; *p; p = &(*p)->Next)
if (*p == chunk) {
*p = chunk->Next;
chunk->Magic = ~MEMTRACK_MAGIC;
AllocatedMemory -= chunk->Size;
return;
}
msg = "Not on list";
break;
case ~MEMTRACK_MAGIC:
msg = "Freed twice";
break;
default:
msg = "No magic";
break;
}
fprintf(stderr, "Warning: trying to delete unallocated block of size %d at"
" %p (%s)\n", chunk->Size, chunk->Address, msg);
}
static void *TrackedMalloc(size_t size, bool is_array)
{
struct MemChunk *chunk;
if (!(chunk = (struct MemChunk *)malloc(sizeof(struct MemChunk)+size)))
Die("Fatal Error: Can't allocate %d bytes\n", size);
else {
chunk->Size = size;
chunk->IsArray = is_array;
AddMemChunk(chunk);
return(chunk->Address);
}
}
static void TrackedFree(void *p, bool is_array)
{
struct MemChunk *chunk;
if (p) {
chunk = (struct MemChunk *)(p-sizeof(struct MemChunk));
if (chunk->IsArray != is_array)
fprintf(stderr, "Warning: using delete%s on a block allocated with"
" new%s (%d bytes at %p)\n",
is_array ? " []" : "", is_array ? "" : " []",
chunk->Size, chunk->Address);
RemMemChunk(chunk);
free(chunk);
}
}
void *operator new(size_t size)
{
return(TrackedMalloc(size, 0));
}
void *operator new[](size_t size)
{
return(TrackedMalloc(size, 1));
}
void operator delete(void *p)
{
TrackedFree(p, 0);
}
void operator delete[](void *p)
{
TrackedFree(p, 1);
}
void DumpMemoryStatus(void)
{
struct MemChunk *chunk;
if (AllocatedMemory) {
fprintf(stderr, "%d bytes allocated:\n", AllocatedMemory);
for (u_int i = 0; i < MAX_HASH; i++)
for (chunk = MemChunks[i]; chunk; chunk = chunk->Next)
fprintf(stderr, " %p: %d bytes%s\n", chunk->Address,
chunk->Size, chunk->IsArray ? " []" : "");
} else
fputs("No memory allocated\n", stderr);
}
#endif /* TRACK_MEMORY */
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