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path: root/support/dktools/dk4mem.c
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/*
Copyright (C) 2015-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/

/*
	WARNING: This file was generated by the dkct program (see
	http://dktools.sourceforge.net/ for details).
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk4mem.ctr
*/

/**	@file dk4mem.c The dk4mem module.
*/


#line 895 "dk4mem.ctr"

#include "dk4conf.h"

#if DK4_ON_WINDOWS && (DK4_WIN_AVOID_CRT || DK4_WIN_DENY_CRT)
#ifndef WINDOWS_H_INCLUDED
#include <windows.h>
#define	WINDOWS_H_INCLUDED 1
#endif
#endif

#include "dk4types.h"

#if DK4_HAVE_STRING_H
#ifndef STRING_H_INCLUDED
#include <string.h>
#define STRING_H_INCLUDED 1
#endif
#endif
#if DK4_HAVE_STRINGS_H
#ifndef STRINGS_H_INCLUDED
#include <strings.h>
#define STRINGS_H_INCLUDED 1
#endif
#endif
#if DK4_HAVE_ASSERT_H
#ifndef	ASSERT_H_INCLUDED
#include <assert.h>
#define	ASSERT_H_INCLUDED 1
#endif
#endif

#include "dk4mem.h"
#include "dk4numco.h"





#line 932 "dk4mem.ctr"


#if	((!(DK4_ON_WINDOWS)) && (!(DK4_HAVE_MEMSET)) && (!(DK4_HAVE_BZERO)))

static
void
dk4mem_fallback_i_reset(unsigned char *bptr, size_t sz)
{
  while (0 < sz--) { *(bptr++) = '\0'; }
}



void
dk4mem_fallback_reset(void *bptr, size_t sz)
{
#if	DK4_USE_ASSERT
  assert(NULL != bptr);
  assert(0 < sz);
#endif
  dk4mem_fallback_i_reset((unsigned char *)bptr, sz);
}


#endif


void
dk4mem_reset(void *bptr, size_t sz, dk4_er_t *erp)
{
  

#line 963 "dk4mem.ctr"
#if	DK4_USE_ASSERT
  assert(NULL != bptr);
  assert(0 < sz);
#endif
  if ((NULL != bptr) && (0 < sz)) {
    DK4_MEMRES(bptr, sz);
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  

#line 973 "dk4mem.ctr"
}



void
dk4mem_set(void *bptr, size_t sz, unsigned char uc, dk4_er_t *erp)
{
#if DK4_HAVE_MEMSET \
&& (!(DK4_ON_WINDOWS && (DK4_WIN_AVOID_CRT || DK4_WIN_AVOID_CRT)))
#if	DK4_USE_ASSERT
  assert(NULL != bptr);
  assert(0 < sz);
#endif
  if ((NULL != bptr) && (0 < sz)) {
    memset(bptr, (int)uc, sz);
  }
  else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
#else
  unsigned char *ucptr;
#if	DK4_USE_ASSERT
  assert(NULL != bptr);
  assert(0 < sz);
#endif
  if ((NULL != bptr) && (0 < sz)) {
    ucptr = (unsigned char *)bptr;
    while (0 < sz--) { *(ucptr++) = uc; }
  }
  else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
#endif
}



#if	((!(DK4_ON_WINDOWS)) && (!(DK4_HAVE_MEMCPY)) && (!(DK4_HAVE_BCOPY)))

static
void
dk4mem_fallback_i_cpy(unsigned char *dst, const unsigned char *src, size_t sz)
{
  while(0 < sz--) { *(dst++) = *(src++); }
}



void
dk4mem_fallback_cpy(void *dst, const void *src, size_t sz)
{
#if	DK4_USE_ASSERT
  assert(NULL != dst);
  assert(NULL != src);
  assert(0 < sz);
#endif
  dk4mem_fallback_i_cpy(
    (unsigned char *)dst,
    (const unsigned char *)src,
    sz
  );
}


#endif


void
dk4mem_cpy(void *dst, void const *src, size_t sz, dk4_er_t *erp)
{
#if	DK4_USE_ASSERT
  assert(NULL != dst);
  assert(NULL != src);
  assert(0 < sz);
#endif
  if ((NULL != dst) && (NULL != src) && (0 < sz)) {
    DK4_MEMCPY(dst, src, sz);
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
}



#if	(DK4_ON_WINDOWS && (DK4_WIN_AVOID_CRT || DK4_WIN_DENY_CRT)) \
|| ((!(DK4_ON_WINDOWS)) && (!(DK4_HAVE_MEMCMP)) && (!(DK4_HAVE_BCMP)))

static
int
dk4mem_fallback_i_cmp(
  const unsigned char	*s1,
  const unsigned char	*s2,
  size_t		 sz
)
{
  int		 back	= 0;
  while ((0 < sz--) && (0 == back)) {
    if (*s1 > *s2) {
      back = 1;
    } else {
      if (*s1 < *s2) {
        back = -1;
      }
    }
    s1++; s2++;
  }
  return back;
}



int
dk4mem_fallback_cmp(const void *s1, const void *s2, size_t sz)
{
#if	DK4_USE_ASSERT
  assert(NULL != s1);
  assert(NULL != s2);
  assert(0 < sz);
#endif
  return(
    dk4mem_fallback_i_cmp(
      (const unsigned char *)s1,
      (const unsigned char *)s2,
      sz
    )
  );
}

#endif


int
dk4mem_cmp(const void *s1, const void *s2, size_t sz, dk4_er_t *erp)
{
  int back = 0;
#if	DK4_USE_ASSERT
  assert(NULL != s1);
  assert(NULL != s2);
  assert(0 < sz);
#endif
  if ((NULL != s1) && (NULL != s2) && (0 < sz)) {
    back = DK4_MEMCMP(s1, s2, sz);
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}




#if (DK4_ON_WINDOWS) || (DK4_HAVE_MALLOC && DK4_HAVE_FREE)

void *
dk4mem_malloc_bytes(size_t bytes, dk4_er_t *erp)
{
  void		*back	=	NULL;	/* Function result. */
#if	DK4_USE_ASSERT
  assert(0 < bytes);
#endif
  if (0 < bytes) {
#if DK4_ON_WINDOWS
    /* +++ Windows */
#if DK4_WIN_AVOID_CRT || DK4_WIN_DENY_CRT
    if ((dk4_um_t)bytes <= (dk4_um_t)0xFFFFFFFFUL) {
#if DK4_USE_WINDOWS_LOCAL_ALLOC
      back = (void*)LocalAlloc(LMEM_FIXED, (DWORD)bytes);
#else
      back = (void*)GlobalAlloc(GMEM_FIXED, (DWORD)bytes);
#endif
      if (NULL == back) {
        dk4error_set_elsize_nelem(erp,DK4_E_MEMORY_ALLOCATION_FAILED,1,bytes);
      }
    } else {
      dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
    }
#else
    back = malloc(bytes);
    if (NULL == back) {
      dk4error_set_elsize_nelem(erp, DK4_E_MEMORY_ALLOCATION_FAILED, 1, bytes);
    }
#endif
    /* --- Windows */
#else
    /* +++ non-Windows */
    back = malloc(bytes);
    if (NULL == back) {
      dk4error_set_elsize_nelem(erp, DK4_E_MEMORY_ALLOCATION_FAILED, 1, bytes);
    }
    /* --- non-Windows */
#endif
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}



void *
dk4mem_malloc(size_t elsize, size_t nelem, dk4_er_t *erp)
{
  void		*back	=	NULL;
  size_t	 bytes;
#if	DK4_USE_ASSERT
  assert(0 < elsize);
  assert(0 < nelem);
  assert((SIZE_MAX / elsize) >= nelem);
#endif
  if ((0 < elsize) && (0 < nelem)) {
    if ((SIZE_MAX / elsize) >= nelem) {
      bytes = elsize * nelem;
      back = dk4mem_malloc_bytes(bytes, erp);
    } else {
      dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}



void *
dk4mem_calloc(size_t elsize, size_t nelem, dk4_er_t *erp)
{
  void		*back	=	NULL;
#if	DK4_USE_ASSERT
  assert(0 < elsize);
  assert(0 < nelem);
  assert((SIZE_MAX / elsize) >= nelem);
#endif
  if ((0 < elsize) && (0 < nelem)) {
    if ((SIZE_MAX / elsize) >= nelem) {
#if DK4_ON_WINDOWS
      /* +++ Windows */
#if DK4_WIN_AVOID_CRT || DK4_WIN_DENY_CRT
      size_t bytes;
      bytes = elsize * nelem;
      if ((dk4_um_t)bytes <= (dk4_um_t)0xFFFFFFFFUL) {
#if DK4_USE_WINDOWS_LOCAL_ALLOC
	back = (void *)LocalAlloc((LMEM_FIXED | LMEM_ZEROINIT), (DWORD)bytes);
#else
	back = (void *)GlobalAlloc((GMEM_FIXED | GMEM_ZEROINIT), (DWORD)bytes);
#endif
	if (NULL == back) {
	  dk4error_set_elsize_nelem(
	    erp, DK4_E_MEMORY_ALLOCATION_FAILED, elsize, nelem
	  );
	}

      } else {
        dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
      }
#else
      back = calloc(nelem, elsize);
      if (NULL == back) {
        dk4error_set_elsize_nelem(
	  erp, DK4_E_MEMORY_ALLOCATION_FAILED, elsize, nelem
	);
      }
#endif
      /* --- Windows */
#else
      /* +++ non-Windows */
#if DK4_HAVE_CALLOC
      back = calloc(nelem, elsize);
      if (NULL == back) {
        dk4error_set_elsize_nelem(
	  erp, DK4_E_MEMORY_ALLOCATION_FAILED, elsize, nelem
	);
      }
#else
      size_t bytes;
      bytes = elsize * nelem;
      back = malloc(bytes);
      if (NULL != back) {
        dk4mem_reset(back, bytes);
      } else {
        dk4error_set_elsize_nelem(
	  erp, DK4_E_MEMORY_ALLOCATION_FAILED, elsize, nelem
	);
      }
#endif
      /* --- non-Windows */
#endif
    } else {
      dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}



void
dk4mem_free(void *ptr)
{
#if	DK4_USE_ASSERT
  assert(NULL != ptr);
#endif
  if (NULL != ptr) {
#if DK4_ON_WINDOWS
    /* +++ Windows */
#if DK4_WIN_AVOID_CRT || DK4_WIN_DENY_CRT
#if DK4_USE_WINDOWS_LOCAL_ALLOC
    LocalFree((HLOCAL)ptr);
#else
    GlobalFree((HLOCAL)ptr);
#endif
#else
    free(ptr);
#endif
    /* --- Windows */
#else
    /* +++ non-Windows */
    free(ptr);
    /* --- non-Windows */
#endif
  }
}

#endif
/* if defined(_WIN32) ... */