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|
/*
** mem.c Memory allocation functions
**
** Part of willus.com general purpose C code library.
**
** Copyright (C) 2018 http://willus.com
**
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU Affero General Public License as
** published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
**
** You should have received a copy of the GNU Affero General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
**
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "willus.h"
#ifdef WIN32
#include <windows.h>
#endif
#define USEGLOBAL
#ifndef NOMEMDEBUG
/* #define DEBUG */
#ifdef DEBUG
static void willus_mem_update(char *label,char *name,int memsize,void *ptr);
#define MAXPTRS 256000
static void *ptrs[MAXPTRS];
static long sizealloced[MAXPTRS];
static char fname[MAXPTRS][32];
static int n;
static char *okay[] = { "" };
static FILE *f;
static long allocated_ptrs;
static long totmem;
static int willus_mem_inited=0;
#endif
#endif // NOMEMDEBUG
static void mem_warn(char *name,int size,int exitcode);
void willus_mem_init(void)
{
#ifndef NOMEMDEBUG
#ifdef DEBUG
int i;
for (i=0;i<MAXPTRS;i++)
{
ptrs[i] = NULL;
sizealloced[i] = 0;
fname[i][0] = '\0';
}
f=fopen("allocs.dat","w");
allocated_ptrs=0;
totmem=0;
n=0;
willus_mem_inited=1;
#endif
#endif // NOMEMDEBUG
}
void willus_mem_close(void)
{
#ifndef NOMEMDEBUG
#ifdef DEBUG
if (!willus_mem_inited)
willus_mem_init();
fclose(f);
#endif
#endif // NOMEMDEBUG
}
int willus_mem_alloc_warn(void **ptr,int size,char *name,int exitcode)
{
int status;
status = willus_mem_alloc((double **)ptr,(long)size,name);
if (!status)
mem_warn(name,size,exitcode);
return(status);
}
int willus_mem_realloc_warn(void **ptr,int newsize,char *name,int exitcode)
{
int status;
status = willus_mem_realloc((double **)ptr,newsize,name);
if (!status)
mem_warn(name,newsize,exitcode);
return(status);
}
int willus_mem_realloc_robust_warn(void **ptr,int newsize,int oldsize,char *name,
int exitcode)
{
int status;
status = willus_mem_realloc_robust((double **)ptr,newsize,oldsize,name);
if (!status)
mem_warn(name,newsize,exitcode);
return(status);
}
/*
** The reason I don't simply use malloc is because I want to allocate
** memory using type long instead of type size_t. On some compilers,
** like gcc, these are the same, so it doesn't matter. On other
** compilers, like Turbo C, these are different.
**
*/
int willus_mem_alloc(double **ptr,long size,char *name)
{
#if (defined(HAVE_WIN32_API) && !defined(__DMC__))
unsigned long memsize;
memsize = (unsigned long)size;
#ifdef USEGLOBAL
(*ptr) = (memsize==size) ? (double *)GlobalAlloc(GPTR,memsize) : NULL;
#else
(*ptr) = (memsize==size) ? (double *)CoTaskMemAlloc(memsize) : NULL;
#endif
#else
size_t memsize;
memsize=(size_t)size;
(*ptr) = (memsize==size) ? (double *)malloc(memsize) : NULL;
#endif
#ifndef NOMEMDEBUG
#ifdef DEBUG
if (!willus_mem_inited)
willus_mem_init();
if ((*ptr)!=NULL)
{
int i;
allocated_ptrs++;
if (n<allocated_ptrs)
{
ptrs[n]=(*ptr);
sizealloced[n]=memsize;
strncpy(fname[n],name,31);
fname[n][31]='\0';
n++;
}
else
{
for (i=0;i<n && ptrs[i]!=0;i++);
ptrs[i]=(*ptr);
sizealloced[i]=memsize;
strncpy(fname[i],name,31);
fname[i][31]='\0';
if (i>=n)
n++;
}
totmem += memsize;
willus_mem_update("MA ",name,memsize,(*ptr));
}
else
fprintf(f,"*** MEM ALLOC FAILS! *** %7ld %s\n",memsize,name);
#endif
#endif // NOMEMDEBUG
/*
{
f=fopen("mem.dat","a");
fprintf(f,"willus_mem_alloc(%d,%s)\n",size,name);
fclose(f);
}
*/
return((*ptr)!=NULL);
}
static void mem_warn(char *name,int size,int exitcode)
{
static char buf[128];
aprintf("\n" ANSI_RED "\aCannot allocate enough memory for "
"function %s." ANSI_NORMAL "\n",name);
comma_print(buf,size);
aprintf(" " ANSI_RED "(Needed %s bytes.)" ANSI_NORMAL "\n\n",buf);
if (exitcode!=0)
{
aprintf(" " ANSI_RED "Program terminated." ANSI_NORMAL "\n\n");
exit(exitcode);
}
}
#ifndef NOMEMDEBUG
#ifdef DEBUG
static void willus_mem_update(char *label,char *name,int memsize,void *ptr)
{
int i;
static int count=0;
if (!willus_mem_inited)
willus_mem_init();
for (i=0;okay[i][0]!='\0';i++)
if (!strncmp(name,okay[i],strlen(okay[i])))
break;
// if (okay[i][0]=='\0' || in_string(label,"!")>=0)
if (1)
{
/*
fprintf(f,"%s %5ld %7ld %9ld %10p %s\n",label,allocated_ptrs,
(long)memsize,(long)totmem,ptr,name);
*/
count++;
if ((count % 500)==0)
{
int ap;
for (ap=i=0;i<n;i++)
if (ptrs[i]!=0)
ap++;
fprintf(f,"xx %5d %d\n",ap,(int)totmem);
// fprintf(f,"=== %d POINTERS LEFT ===\n",ap);
/*
if ((count % 10000)==0)
{
for (i=0;i<n;i++)
if (ptrs[i]!=0)
fprintf(f,"%-32s %10p %7d\n",fname[i],ptrs[i],(int)sizealloced[i]);
fprintf(f,"\n");
}
*/
fflush(f);
}
}
}
void willus_mem_debug_update(char *);
void willus_mem_debug_update(char *s)
{
int i,ap;
for (ap=i=0;i<n;i++)
if (ptrs[i]!=0)
ap++;
fprintf(f,"%s\nyy %5d %d\n",s,ap,(int)totmem);
for (i=0;i<n;i++)
if (ptrs[i]!=0)
fprintf(f,"%-32s %10p %7d\n",fname[i],ptrs[i],(int)sizealloced[i]);
fprintf(f,"\n");
fflush(f);
}
#endif
#endif // NOMEMDEBUG
int willus_mem_realloc(double **ptr,long newsize,char *name)
{
#if (defined(HAVE_WIN32_API) && !defined(__DMC__))
unsigned long memsize;
void *newptr;
#else
size_t memsize;
void *newptr;
#endif
#if (defined(HAVE_WIN32_API) && !defined(__DMC__))
memsize=(unsigned long)newsize;
#else
memsize=(size_t)newsize;
#endif
if (memsize!=newsize)
return(0);
if ((*ptr)==NULL)
return(willus_mem_alloc(ptr,newsize,name));
#if (defined(HAVE_WIN32_API) && !defined(__DMC__))
#ifdef USEGLOBAL
newptr = (void *)GlobalReAlloc((void *)(*ptr),memsize,GMEM_MOVEABLE);
if (newptr==NULL)
{
printf("GlobalReAlloc fails:\n %s\n",win_lasterror());
printf(" Function: %s\n",name);
printf(" Mem size requested: %ld\n",newsize);
}
#else
newptr = (void *)CoTaskMemRealloc((void *)(*ptr),memsize);
#endif
#else
newptr = realloc((void *)(*ptr),memsize);
#endif
if (newptr==NULL && willus_mem_alloc((double **)&newptr,newsize,name))
{
printf("!! DIRTY REALLOC in willus_mem_realloc !!\n");
memcpy(newptr,(*ptr),newsize);
willus_mem_free(ptr,name);
}
if (newptr==NULL)
return(0);
#ifndef NOMEMDEBUG
#ifdef DEBUG
if (!willus_mem_inited)
willus_mem_init();
{
int i;
char label[64];
for (i=0;i<n && ptrs[i]!=(*ptr);i++);
if (i>=n)
{
sprintf(label,"!!Bad SRA!! oldptr=%p ",(*ptr));
totmem += memsize;
ptrs[n] = newptr;
sizealloced[n] = memsize;
strncpy(fname[n],name,31);
fname[n][31]='\0';
n++;
allocated_ptrs++;
willus_mem_update(label,name,memsize,newptr);
}
else
{
totmem += memsize-sizealloced[i];
sizealloced[i] = memsize;
ptrs[i] = newptr;
strncpy(fname[i],name,31);
fname[i][31]='\0';
willus_mem_update(" SRA ",name,memsize,newptr);
}
}
#endif
#endif // NOMEMDEBUG
(*ptr) = newptr;
return(1);
}
int willus_mem_realloc_robust(double **ptr,long newsize,long oldsize,char *name)
{
#if (defined(HAVE_WIN32_API) && !defined(__DMC__))
unsigned long memsize;
void *newptr;
#else
size_t memsize;
void *newptr;
#endif
#ifndef NOMEMDEBUG
#ifdef DEBUG
int ra=0;
#endif
#endif // NOMEMDEBUG
#if (defined(HAVE_WIN32_API) && !defined(__DMC__))
memsize=(unsigned long)newsize;
#else
memsize=(size_t)newsize;
#endif
if (memsize!=newsize)
return(0);
if ((*ptr)==NULL || oldsize<=0)
return(willus_mem_alloc(ptr,newsize,name));
#if (defined(HAVE_WIN32_API) && !defined(__DMC__))
#ifdef USEGLOBAL
newptr = (void *)GlobalReAlloc((void *)(*ptr),memsize,GMEM_MOVEABLE);
#else
newptr = (void *)CoTaskMemRealloc((void *)(*ptr),memsize);
#endif
#else
newptr = realloc((void *)(*ptr),memsize);
#endif
if (newptr==NULL && willus_mem_alloc((double **)&newptr,newsize,name))
{
#ifndef NOMEMDEBUG
#ifdef DEBUG
ra=1;
printf("Copying %ld bytes from old pointer to new pointer.\n",oldsize);
#endif
#endif // NOMEMDEBUG
memcpy(newptr,(*ptr),oldsize);
#ifndef NOMEMDEBUG
#ifdef DEBUG
printf("Done.\n");
#endif
#endif // NOMEMDEBUG
willus_mem_free(ptr,name);
}
if (newptr==NULL)
return(0);
#ifndef NOMEMDEBUG
#ifdef DEBUG
if (!willus_mem_inited)
willus_mem_init();
if (ra==0)
{
int i;
char label[80];
for (i=0;i<n && ptrs[i]!=(*ptr);i++);
if (i>=n)
{
sprintf(label,"!!Bad RRA!! oldptr=%p,oldsize=%d ",(*ptr),(int)oldsize);
totmem += memsize-oldsize;
ptrs[n] = newptr;
sizealloced[n] = memsize;
strncpy(fname[n],name,31);
fname[n][31]='\0';
n++;
allocated_ptrs++;
willus_mem_update(label,name,memsize,newptr);
}
// printf("*** !! realloc can't find pointer in list !! ***\n");
else
{
totmem += memsize-sizealloced[i];
sizealloced[i] = memsize;
ptrs[i] = newptr;
strncpy(fname[i],name,31);
fname[i][31]='\0';
willus_mem_update(" RRA ",name,memsize,newptr);
}
}
#endif
#endif // NOMEMDEBUG
(*ptr) = newptr;
return(1);
}
void willus_mem_free(double **ptr,char *name)
{
#ifndef NOMEMDEBUG
#ifdef DEBUG
if (!willus_mem_inited)
willus_mem_init();
#endif
#endif // NOMEMDEBUG
if ((*ptr)!=NULL)
{
#ifndef NOMEMDEBUG
#ifdef DEBUG
int i;
allocated_ptrs--;
for (i=0;i<n && ptrs[i]!=(*ptr);i++);
if (i>=n)
willus_mem_update(" !!MF",name,0,(*ptr));
else
{
ptrs[i]=0;
totmem -= sizealloced[i];
sizealloced[i]=0;
for (i=MAXPTRS-1;i>=0;i--)
if (ptrs[i]!=0)
break;
n=i+1;
willus_mem_update(" MF",name,0,(*ptr));
}
#endif
#endif // NOMEMDEBUG
#if (defined(HAVE_WIN32_API) && !defined(__DMC__))
#ifdef USEGLOBAL
GlobalFree((void *)(*ptr));
#else
CoTaskMemFree((void *)(*ptr));
#endif
#else
free((void *)(*ptr));
#endif
(*ptr)=NULL;
}
}
|
