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/* ASCEND modelling environment |
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Copyright (C) 2006 Carnegie Mellon University |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2, or (at your option) |
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any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place - Suite 330, |
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Boston, MA 02111-1307, USA. |
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*//** @file |
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ASCEND memory allocation & reporting routines. |
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|
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These functions provide tracking of memory events and assist |
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finding and debugging memory errors. Memory tracking options are |
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selected using the macros MALLOC_DEBUG and ALLOCATED_TESTS discussed |
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below. This allows the enhanced functionality to be used or turned |
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off as desired. This functionality adds considerable run-time overhead, |
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and so should generally be used for debugging purposes only. There are |
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also routines for reporting on the status of memory blocks as well as |
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for the memory manager itself.<br><br> |
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|
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To use the memory tracking features, you need to use the provided |
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allocation and deallocation functions (ascmalloc(), asccalloc(), |
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ascrealloc(), ascfree()). Direct calls to the corresponding system |
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routines will by-pass the memory manager and not be tracked. Memory |
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allocations which return NULL are not tracked or recorded.<br><br> |
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|
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This module also standardizes critical implementation-specific features |
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such as behavior when an allocation of zero bytes is requested |
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(see MOD_ASCMALLOC), and the behavior of realloc() under purify |
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(see MOD_REALLOC).<br><br> |
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|
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The following macros affect the compilation and run-time behavior |
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of Ascend memory management. |
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|
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<pre> |
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MOD_ASCMALLOC Forces the memory allocation functions to always |
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allocate at least 1 byte and return a non-NULL |
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pointer. This macro should be defined if your |
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allocator returns NULL when a zero-sized block is |
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requested (e.g. alpha or rs6000; Borland and Watcom |
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on Windows). It need not be defined if your |
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allocator returns a non-NULL pointer to a zero-length |
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block, saving you a few bytes of memory. |
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|
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MALLOC_DEBUG Causes all calls to memory allocation routines |
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to be tracked and logged to an output file. |
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This really slows down the memory management |
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system, and so should be used for debugging only. |
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|
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ALLOCATED_TESTS Forces a lot of extra assertions when defined |
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along with MALLOC_DEBUG. |
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|
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MOD_REALLOC If defined, ascreallocPURE() uses a homegrown |
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realloc() that behaves properly with purify. |
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This is more expensive, and should be used |
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for debugging only. |
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|
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Requires: |
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#include "utilities/ascConfig.h" |
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#include "utilities/ascPanic.h" |
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</pre> |
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*//* |
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by Tom Epperly |
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Created: 2/6/90 |
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Version: $Revision: 1.2 $ |
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Version control file: $RCSfile: ascMalloc.h,v $ |
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Date last modified: $Date: 1997/07/18 11:44:50 $ |
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Last modified by: $Author: mthomas $ |
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*/ |
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|
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#ifndef ASC_ASCMALLOC_H |
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#define ASC_ASCMALLOC_H |
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|
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/* MALLOC_DEBUG may be defined in config.h... */ |
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#include <utilities/config.h> |
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|
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#ifdef MALLOC_DEBUG |
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# define ascstrdup(str) ascstrdupf_dbg(str) |
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#else |
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# define ascstrdup(str) ascstrdupf(str) |
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#endif |
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/**< |
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* Returns a new copy of string str. |
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* This is the ASCEND rendition of strdup(). The caller is |
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* responsible for deallocating the new string when finished |
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* using ascfree(). Returns NULL if str is NULL or memory |
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* cannot be allocated for the new copy. If MALLOC_DEBUG is |
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* defined, the allocation is tracked. |
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* |
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* @param str The 0-terminated string to copy. |
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* @return A new copy of str as a char *, or NULL if an error occurs. |
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*/ |
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|
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ASC_DLLSPEC(char *) ascstrdupf(CONST char *str); |
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/**< |
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* Implementation function for ascstrdup() if MALLOC_DEBUG |
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* is not defined. Do not call this function directly - use |
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* ascstrdup() instead. |
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*/ |
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|
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extern char *ascstrdupf_dbg(CONST char *str); |
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/**< |
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* Implementation function for ascstrdup() if MALLOC_DEBUG |
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* is defined. Do not call this function directly - define |
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* MALLOC_DEBUG and use ascstrdup() instead. |
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*/ |
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|
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ASC_DLLSPEC(char *) asc_memcpy(char *dest, char *src, size_t n); |
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/**< |
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* Copies n bytes from memory address src to dest. |
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* This version of memcpy handles overlapping memory ranges |
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* properly. It could be more efficient internally. As it is, |
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* it moves data a char at a time. Unless n is 0, neither dest |
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* nor src may be NULL (checked by asc_assertion). |
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* |
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* @param dest Pointer to address to which to copy (non-NULL). |
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* @param src Pointer to address from which to copy (non-NULL). |
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* @param n Number of bytes to copy. |
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* @return Returns dest. |
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*/ |
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|
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#ifndef MOD_REALLOC |
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# define ascreallocPURE(ptr,nold,nnew) ascrealloc((ptr),(nnew)) |
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#else |
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# ifdef MALLOC_DEBUG |
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# define ascreallocPURE(ptr,nold,nnew) ascreallocPUREF_dbg((ptr),(nold),(nnew)) |
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# else |
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# define ascreallocPURE(ptr,nold,nnew) ascreallocPUREF((ptr),(nold),(nnew)) |
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# endif |
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#endif |
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/**< |
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* purify realloc() function for debugging purposes. |
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* In some OS, realloc() fools purify into thinking there |
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* is a memory leak. If MOD_REALLOC is defined at compile |
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* time for all software referencing this header, then all |
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* calls to ascreallocPURE() will use a homegrown realloc |
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* that does not fool purify. Leaks of memory reported |
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* around realloc() when MOD_REALLOC is defined should be |
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* real leaks and not OS noise.<br><br> |
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* |
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* The custom function is somewhat more expensive than most |
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* system-supplied realloc()'s, so should only be used for |
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* debugging. Note that ascreallocPURE() will provide memory |
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* event tracking if MALLOC_DEBUG is also defined when this |
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* header is included. |
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* |
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* @see ascreallocPUREF() |
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* @param ptr Pointer to the memory block to reallocate. |
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* @param nold Old block size in bytes. |
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* @param nnew New block size in bytes. |
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* @return A pointer to the new memory block, or NULL if an error occurred. |
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*/ |
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|
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extern char *ascreallocPUREF(char *ptr, size_t oldbytes, size_t newbytes); |
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/**< |
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* Implementation function for release version of ascreallocPURE(). |
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* Do not call this function directly - use ascreallocPURE() |
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* (by #defining MOD_REALLOC) instead. This version does not have |
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* its memory tracked. This is a custom realloc() which behaves |
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* properly with purify. It bypasses the standard realloc() function. |
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* The caller must indicate the old size of the memory region. |
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* |
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* @param ptr Pointer to the memory block to reallocate. |
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* @param oldbytes Old block size in bytes. |
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* @param newbytes New block size in bytes. |
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* @return A pointer to the new memory block, or NULL if an error occurred. |
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*/ |
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|
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extern char *ascreallocPUREF_dbg(char *ptr, size_t oldbytes, size_t newbytes); |
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/**< |
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* Implementation function for debug version of ascreallocPURE(). |
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* Do not call this function directly - use ascreallocPURE() |
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* (by #defining MOD_REALLOC and MALLOC_DEBUG) instead. This version |
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* has it's allocations tracked by the memory manager. This is |
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* a custom realloc() which behaves properly with purify. It |
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* bypasses the standard realloc() function. The caller must indicate |
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* the old size of the memory region. |
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* |
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* @param ptr Pointer to the memory block to reallocate. |
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* @param oldbytes Old block size in bytes. |
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* @param newbytes New block size in bytes. |
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* @return A pointer to the new memory block, or NULL if an error occurred. |
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*/ |
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|
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#ifdef MALLOC_DEBUG |
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# define ascstatus(msg) ascstatusf(msg) |
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#else |
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# define ascstatus(msg) |
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#endif |
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/**< |
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* Prints a summary of the memory manager status (iff MALLOC_DEBUG |
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* is defined) The msg is first printed, followed by a newline and |
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* then the summary memory report. These are printed both to the |
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* memory log file, as well as to the screen. If MALLOC_DEBUG is |
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* not defined, then nothing is printed. |
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* |
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* @see ascstatus_detail(), ascshutdown() |
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* @param msg The message to print before the summary report. |
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*/ |
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|
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extern void ascstatusf(CONST char *msg); |
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/**< |
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* Implementation function for ascstatus() if MALLOC_DEBUG |
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* is defined. Do not call this function directly - define |
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* MALLOC_DEBUG and use ascstatus() instead. |
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*/ |
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|
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#ifdef MALLOC_DEBUG |
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# define ascstatus_detail(msg) ascstatus_detailf(msg) |
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#else |
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# define ascstatus_detail(msg) |
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#endif |
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/**< |
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* Prints a more detailed report of the memory manager status (iff |
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* MALLOC_DEBUG is defined) The msg is first printed, followed by |
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* a newline and then the memory report. This report includes both |
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* the summary information printed by ascstatus(), as well as a listing |
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* of memory blocks currently allocated. These are printed both to the |
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* memory log file, as well as to the screen. If MALLOC_DEBUG is |
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* not defined, then nothing is printed. |
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* |
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* @see ascstatus(), ascshutdown() |
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* @param msg The message to print before the detail report. |
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*/ |
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|
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extern void ascstatus_detailf(CONST char *msg); |
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/**< |
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* Implementation function for ascstatus_detail() if MALLOC_DEBUG |
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* is defined. Do not call this function directly - define |
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* MALLOC_DEBUG and use ascstatus_detail() instead. |
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*/ |
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|
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#ifdef MALLOC_DEBUG |
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# define ascshutdown(msg) ascshutdownf(msg) |
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#else |
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# define ascshutdown(msg) |
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#endif |
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/**< |
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* Prints a detailed report of the memory manager status and cleans |
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* up after memory logging (iff MALLOC_DEBUG is defined). The |
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* reporting is the same as ascstatus_detail(). After this function |
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* is called, subsequent allocation/deallocation activity will be |
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* logged in a different log file than previously. If MALLOC_DEBUG |
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* is not defined, then this function does nothing. |
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* |
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* @see ascstatus(), ascstatus_detail() |
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* @param msg The message to print before the detail report. |
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*/ |
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|
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ASC_DLLSPEC(void) ascshutdownf(CONST char *msg); |
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/**< |
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* Implementation function for ascshutdown() if MALLOC_DEBUG |
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* is defined. Do not call this function directly - define |
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* MALLOC_DEBUG and use ascshutdown() instead. |
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*/ |
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|
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#ifdef MALLOC_DEBUG |
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# define ascmeminuse() ascmeminusef() |
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#else |
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# define ascmeminuse() (0) |
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#endif |
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|
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ASC_DLLSPEC(unsigned long) ascmeminusef(void); |
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/**< |
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* Returns the current total amount of allocated memory (iff |
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* MALLOC_DEBUG is #defined). If MALLOC_DEBUG is not #defined, |
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* the return value is 0 regardless of the actual amount of |
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* allocated memory. |
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*/ |
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|
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#ifdef MOD_ASCMALLOC |
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# define AT_LEAST_1(x) MAX((x),1) |
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#else |
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# define AT_LEAST_1(x) (x) |
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#endif |
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/**< |
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* Macro to ensure at least 1 byte is requested when MOD_ASCMALLOC |
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* is defined. Requires a define for MAX(), which is located in |
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* utilities/ascConfig.h. |
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*/ |
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|
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#ifdef MALLOC_DEBUG |
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# define asccalloc(nelem, size) \ |
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asccallocf(AT_LEAST_1(nelem), (size), __FILE__, __LINE__) |
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#else |
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# define asccalloc(nelem,size) calloc(AT_LEAST_1(nelem),(size)) |
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#endif |
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/**< |
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* ASCEND calloc() function. |
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* If MALLOC_DEBUG is defined, the allocation is tracked. |
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* If not, then the standard system calloc() is used. |
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* |
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* @see asccallocf() |
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* @param nelem size_t, number of elements to allocate. |
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* @param size size_t, size of each element. |
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* @return A (void *) to the newly-allocated block, or NULL on error. |
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*/ |
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|
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ASC_DLLSPEC(VOIDPTR) asccallocf(size_t nelem, size_t elsize, |
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CONST char *file, int line); |
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/**< |
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* Implementation function for asccalloc() when MALLOC_DEBUG |
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* is defined. Do not call this function directly - use |
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* asccalloc() instead. |
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*/ |
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|
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#ifdef MALLOC_DEBUG |
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# define ascmalloc(size) \ |
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ascmallocf(AT_LEAST_1(size), __FILE__, __LINE__) |
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#else |
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# define ascmalloc(size) malloc(AT_LEAST_1(size)) |
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#endif |
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/**< |
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* ASCEND malloc() function. |
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* If MALLOC_DEBUG is defined, the allocation is tracked. |
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* If not, then the standard system malloc() is used. |
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* |
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* @see ascmallocf() |
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* @param size size_t, size of each element. |
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* @return A (void *) to the newly-allocated block, or NULL on error. |
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*/ |
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|
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ASC_DLLSPEC(VOIDPTR) ascmallocf(size_t size, CONST char * file, int line); |
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/**< |
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* Implementation function for ascmalloc() when MALLOC_DEBUG |
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* is defined. Do not call this function directly - define |
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* MALLOC_DEBUG and use ascmalloc() instead. |
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*/ |
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|
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#ifdef MALLOC_DEBUG |
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# define ascrealloc(ptr, size) \ |
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ascreallocf((ptr), AT_LEAST_1(size), __FILE__, __LINE__) |
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#else |
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# if (defined(sun) && !defined(__SVR4)) |
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# define ascrealloc(ptr,size) \ |
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((ptr)!=NULL ? realloc((ptr), AT_LEAST_1(size)) : malloc(AT_LEAST_1(size))) |
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# else |
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# define ascrealloc(ptr,size) realloc((ptr), AT_LEAST_1(size)) |
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# endif |
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#endif |
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/**< |
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* ASCEND realloc() function. |
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* If MALLOC_DEBUG is defined, the allocation is tracked. |
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* If not, then the standard system realloc() is used. |
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* |
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* @see ascreallocf(), ascreallocPURE() |
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* @param ptr Pointer to memory block to reallocate. |
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* @param size size_t, size of each element. |
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* @return A (void *) to the newly-allocated block, or NULL on error. |
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*/ |
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|
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ASC_DLLSPEC(VOIDPTR) ascreallocf(VOIDPTR ptr, size_t size, |
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CONST char *file, int line); |
| 363 |
/**< |
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* Implementation function for ascrealloc() when MALLOC_DEBUG |
| 365 |
* is defined. Do not call this function directly - define |
| 366 |
* MALLOC_DEBUG and use ascrealloc() instead. |
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*/ |
| 368 |
|
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#ifdef MALLOC_DEBUG |
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# define ascfree(ptr) ascfreef((ptr), __FILE__, __LINE__) |
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#else |
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# define ascfree(ptr) free(ptr) |
| 373 |
#endif |
| 374 |
/**< |
| 375 |
* ASCEND free() function. |
| 376 |
* If MALLOC_DEBUG is defined, the deallocation is tracked. |
| 377 |
* If not, then the standard system free() is used. |
| 378 |
* |
| 379 |
* @see ascfreef() |
| 380 |
* @param ptr Pointer to the memory block to free. |
| 381 |
*/ |
| 382 |
|
| 383 |
ASC_DLLSPEC(void) ascfreef(VOIDPTR ptr, CONST char *file, int line); |
| 384 |
/**< |
| 385 |
* Implementation function for ascfree() when MALLOC_DEBUG |
| 386 |
* is defined. Do not call this function directly - define |
| 387 |
* MALLOC_DEBUG and use ascfree() instead. |
| 388 |
*/ |
| 389 |
|
| 390 |
#ifdef MALLOC_DEBUG |
| 391 |
# define ascbcopy(src,dest,size) \ |
| 392 |
ascbcopyf((src), (dest), (size), __FILE__, __LINE__) |
| 393 |
#else |
| 394 |
# define ascbcopy(src,dest,size) \ |
| 395 |
memcpy((void *)(dest), (void *)(src), (size)) |
| 396 |
#endif |
| 397 |
/**< |
| 398 |
* ASCEND bcopy() function. |
| 399 |
* Copies size bytes from src to dest. If MALLOC_DEBUG is |
| 400 |
* defined, this uses custom function ascbcopyf(). If not, |
| 401 |
* then memcpy() is used. |
| 402 |
* |
| 403 |
* @see asc_memcpy(), ascbcopyf(), ascbzero(), ascbfill() |
| 404 |
* @param src Pointer to memory block to copy. |
| 405 |
* @param dest Pointer to memory block to receive copy. |
| 406 |
* @param size size_t, number of bytes to copy. |
| 407 |
* @return A (void *) to dest. |
| 408 |
*/ |
| 409 |
|
| 410 |
ASC_DLLSPEC(VOIDPTR) ascbcopyf(CONST VOIDPTR src, VOIDPTR dest, size_t size, |
| 411 |
CONST char *file, int line); |
| 412 |
/**< |
| 413 |
* Implementation function for ascbcopy() when MALLOC_DEBUG |
| 414 |
* is defined. Do not call this function directly - define |
| 415 |
* MALLOC_DEBUG and use ascbcopy() instead. |
| 416 |
*/ |
| 417 |
|
| 418 |
#ifdef MALLOC_DEBUG |
| 419 |
# define ascbzero(dest,length) \ |
| 420 |
ascbzerof((dest), (length), __FILE__, __LINE__) |
| 421 |
#else |
| 422 |
# define ascbzero(dest,length) memset((char *)(dest), 0, (length)) |
| 423 |
#endif |
| 424 |
/**< |
| 425 |
* ASCEND bzero() function. |
| 426 |
* Sets length bytes of memory at dest to zero. If MALLOC_DEBUG |
| 427 |
* is defined, this uses custom function ascbzerof(). If not, |
| 428 |
* then memset() is used. |
| 429 |
* |
| 430 |
* @see ascbzerof(), ascbcopy(), ascbfill() |
| 431 |
* @param dest Pointer to memory block to be cleared. |
| 432 |
* @param length size_t, number of bytes to set to zero. |
| 433 |
* @return A (void *) to dest. |
| 434 |
*/ |
| 435 |
|
| 436 |
ASC_DLLSPEC(VOIDPTR) ascbzerof(VOIDPTR dest, size_t length, CONST char *file, int line); |
| 437 |
/**< |
| 438 |
* Implementation function for ascbzero() when MALLOC_DEBUG |
| 439 |
* is defined. Do not call this function directly - define |
| 440 |
* MALLOC_DEBUG and use ascbzero() instead. |
| 441 |
*/ |
| 442 |
|
| 443 |
#ifdef MALLOC_DEBUG |
| 444 |
# define AllocatedMemory(ptr,size) AllocatedMemoryF((ptr), (size)) |
| 445 |
#else |
| 446 |
# define AllocatedMemory(ptr,size) (1) |
| 447 |
#endif |
| 448 |
/**< |
| 449 |
* Evaluate a memory block for allocation status. |
| 450 |
* Return values if MALLOC is defined: |
| 451 |
* - 0 no memory in the block is currently allocated |
| 452 |
* - 1 the memory block is wholly contained in an allocated block |
| 453 |
* - 2 the memory block equals an element of the memory list |
| 454 |
* - -1 the memory block is partially contained in an allocated block |
| 455 |
* If MALLOC_DEBUG is not defined, always returns 1. |
| 456 |
* |
| 457 |
* @param ptr Pointer to memory block to look up |
| 458 |
* @param size size_t, size of the memory block to look up. |
| 459 |
*/ |
| 460 |
|
| 461 |
ASC_DLLSPEC(int) AllocatedMemoryF(CONST VOIDPTR ptr, size_t size); |
| 462 |
/**< |
| 463 |
* Implementation function for AllocatedMemory() when |
| 464 |
* MALLOC_DEBUG is defined. Do not call this function |
| 465 |
* directly - define MALLOC_DEBUG and use |
| 466 |
* AllocatedMemory() instead. |
| 467 |
*/ |
| 468 |
|
| 469 |
#ifdef MALLOC_DEBUG |
| 470 |
# define InMemoryBlock(ptr1,ptr2) InMemoryBlockF((ptr1), (ptr2)) |
| 471 |
#else |
| 472 |
#define InMemoryBlock(ptr1,ptr2) (1) |
| 473 |
#endif |
| 474 |
/**< |
| 475 |
* Query whether one memory block is contained within another. |
| 476 |
* Returns non-zero if ptr2 is in the memory block starting at |
| 477 |
* address ptr1; otherwise returns 0. If MALLOC_DEBUG is not |
| 478 |
* defined, always returns 1. |
| 479 |
*/ |
| 480 |
|
| 481 |
ASC_DLLSPEC(int) InMemoryBlockF(CONST VOIDPTR ptr1, CONST VOIDPTR ptr2); |
| 482 |
/**< |
| 483 |
* Implementation function for InMemoryBlock() when MALLOC_DEBUG |
| 484 |
* is defined. Do not call this function directly - define |
| 485 |
* MALLOC_DEBUG and use InMemoryBlock() instead. |
| 486 |
*/ |
| 487 |
|
| 488 |
#define ascbfill(dest,length) memset((char *)(dest), 255, (length)) |
| 489 |
/**< |
| 490 |
* Sets length bytes of memory at dest to 255. There is |
| 491 |
* no difference in implementation whether MALLOC_DEBUG is |
| 492 |
* defined or not. |
| 493 |
* |
| 494 |
* @see ascbcopy(), ascbzero() |
| 495 |
* @param dest Pointer to memory block to be set. |
| 496 |
* @param length size_t, number of bytes to set to 255. |
| 497 |
* @return A (void *) to dest. |
| 498 |
*/ |
| 499 |
|
| 500 |
#if defined(MALLOC_DEBUG) && defined(ALLOCATED_TESTS) |
| 501 |
# define AssertAllocatedMemory(ptr,size) \ |
| 502 |
asc_assert(AllocatedMemoryF((VOIDPTR)(ptr), (size_t)(AT_LEAST_1(size)))==2) |
| 503 |
#else |
| 504 |
# define AssertAllocatedMemory(ptr,size) |
| 505 |
#endif |
| 506 |
/**< |
| 507 |
* Assertion that a memory block is allocated with specified size. |
| 508 |
* This assertion is only active if both MALLOC_DEBUG |
| 509 |
* and ALLOCATED_TESTS are defined. |
| 510 |
* |
| 511 |
* @param ptr Pointer to memory block to evaluate. |
| 512 |
* @param size size_t, size of memory block to evaluate. |
| 513 |
*/ |
| 514 |
|
| 515 |
#if defined(MALLOC_DEBUG) && defined(ALLOCATED_TESTS) |
| 516 |
# define AssertMemory(ptr) \ |
| 517 |
asc_assert(AllocatedMemoryF((VOIDPTR)(ptr), 0)) |
| 518 |
#else |
| 519 |
# define AssertMemory(ptr) |
| 520 |
#endif |
| 521 |
/**< |
| 522 |
* Assertion that ptr points to (or into) an allocated memory |
| 523 |
* block. This assertion is only active if both MALLOC_DEBUG |
| 524 |
* and ALLOCATED_TESTS are defined. |
| 525 |
* |
| 526 |
* @param ptr Pointer to memory block to evaluate. |
| 527 |
*/ |
| 528 |
|
| 529 |
#if defined(MALLOC_DEBUG) && defined(ALLOCATED_TESTS) |
| 530 |
# define AssertContainedMemory(ptr,size) \ |
| 531 |
asc_assert(AllocatedMemoryF((VOIDPTR)(ptr),(size_t)(size))>0) |
| 532 |
#else |
| 533 |
# define AssertContainedMemory(ptr,size) |
| 534 |
#endif |
| 535 |
/**< |
| 536 |
* Assertion that a memory block is wholly or partially |
| 537 |
* contained in an allocated block. |
| 538 |
* This assertion is only active if both MALLOC_DEBUG |
| 539 |
* and ALLOCATED_TESTS are defined. |
| 540 |
* |
| 541 |
* @param ptr Pointer to memory block to evaluate. |
| 542 |
* @param size size_t, size of memory block to evaluate. |
| 543 |
*/ |
| 544 |
|
| 545 |
#if defined(MALLOC_DEBUG) && defined(ALLOCATED_TESTS) |
| 546 |
# define AssertContainedIn(ptr1,ptr2) \ |
| 547 |
asc_assert(InMemoryBlockF((VOIDPTR)(ptr1),(VOIDPTR)(ptr2))) |
| 548 |
#else |
| 549 |
# define AssertContainedIn(ptr,ptr2) |
| 550 |
#endif |
| 551 |
/**< |
| 552 |
* Assertion that memory block ptr2 is contained in the block |
| 553 |
* starting at ptr1. This assertion is only active if both |
| 554 |
* MALLOC_DEBUG and ALLOCATED_TESTS are defined. |
| 555 |
*/ |
| 556 |
|
| 557 |
#endif /* ASC_ASCMALLOC_H */ |
| 558 |
|
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