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86 lines
3.0 KiB
C++
86 lines
3.0 KiB
C++
/**************************************************************************
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* Filename:
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emalloc.c
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** Purpose:
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Routines for trapping memory allocation errors.
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** Author:
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Dan Johnson
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HP-UX 6.2
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HP-UX 6.2
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** History:
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4/3/89, DSJ, Created.
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**
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** (c) Copyright Hewlett-Packard Company, 1988.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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******************************************************************************/
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/*----------------------------------------------------------------------------
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Include Files and Type Defines
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----------------------------------------------------------------------------*/
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#include "emalloc.h"
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#include "danerror.h"
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#include <stdlib.h>
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/*----------------------------------------------------------------------------
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Public Code
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----------------------------------------------------------------------------*/
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/**
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* This routine attempts to allocate the specified number of
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* bytes. If the memory can be allocated, a pointer to the
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* memory is returned. If the memory cannot be allocated, or
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* if the allocation request is negative or zero,
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* an error is trapped.
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* @param Size number of bytes of memory to be allocated
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* @return Pointer to allocated memory.
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* @note Exceptions:
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* - #NOTENOUGHMEMORY unable to allocate Size bytes
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* - #ILLEGALMALLOCREQUEST negative or zero request size
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* @note History: 4/3/89, DSJ, Created.
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*/
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void *Emalloc(int Size) {
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void *Buffer;
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if (Size <= 0)
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DoError (ILLEGALMALLOCREQUEST, "Illegal malloc request size");
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Buffer = (void *) malloc (Size);
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if (Buffer == NULL) {
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DoError (NOTENOUGHMEMORY, "Not enough memory");
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return (NULL);
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}
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else
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return (Buffer);
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} /* Emalloc */
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/*---------------------------------------------------------------------------*/
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void *Erealloc(void *ptr, int size) {
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void *Buffer;
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if (size < 0 || (size == 0 && ptr == NULL))
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DoError (ILLEGALMALLOCREQUEST, "Illegal realloc request size");
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Buffer = (void *) realloc (ptr, size);
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if (Buffer == NULL && size != 0)
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DoError (NOTENOUGHMEMORY, "Not enough memory");
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return (Buffer);
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} /* Erealloc */
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/*---------------------------------------------------------------------------*/
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void Efree(void *ptr) {
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if (ptr == NULL)
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DoError (ILLEGALMALLOCREQUEST, "Attempted to free NULL ptr");
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free(ptr);
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} /* Efree */
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