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path: root/support/dktools/dk4mem.c
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/*
	WARNING: This file was generated by dkct.
	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
*/

/*
Copyright (C) 2015-2017, Dirk Krause

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above opyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
* Neither the name of the author nor the names of contributors may be used
  to endorse or promote products derived from this software without specific
  prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

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


#line 699 "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

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





#line 730 "dk4mem.ctr"



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)
{
  dk4mem_fallback_i_reset((unsigned char *)bptr, sz);
}



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

#line 754 "dk4mem.ctr"
  if ((NULL != bptr) && (0 < sz)) {
    DK4_MEMRES(bptr, sz);
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  

#line 760 "dk4mem.ctr"
}



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



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)
{
  dk4mem_fallback_i_cpy(
    (unsigned char *)dst,
    (const unsigned char *)src,
    sz
  );
}



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


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)
{
  return(
    dk4mem_fallback_i_cmp(
      (const unsigned char *)s1,
      (const unsigned char *)s2,
      sz
    )
  );
}



int
dk4mem_cmp(const void *s1, const void *s2, size_t sz, dk4_er_t *erp)
{
  int back = 0;
  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 (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 ((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 ((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 (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) ... */