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-rw-r--r--src/vf_malloc_stdlib.c392
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diff --git a/src/vf_malloc_stdlib.c b/src/vf_malloc_stdlib.c
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+/******************************************************************************
+
+ (C) Nick Marley, 2001 -
+
+ This software is distributed under the GNU Lesser General Public Licence.
+ Please read and understand the comments at the top of vf_iface.h before use!
+
+FILE
+ $Workfile: vf_malloc.c $
+ $Revision: 1.2 $
+ $Author: tilda $
+
+ORIGINAL AUTHOR
+ Nick Marley
+
+DESCRIPTION
+ C standard library based memory allocation functions referenced by default in
+ the accompanying vf_malloc.c file. These are excluded from the build entirely
+ if VFORMAT_EXCLUDE_MALLOC is set in the build options.
+
+MODIFICATION HISTORY
+ * $Log: vf_malloc_stdlib.c,v $
+ * Revision 1.2 2002/11/15 09:15:00 tilda
+ * IID638823 - Various portability issues.
+ *
+ * Revision 1.1 2002/10/26 15:57:11 tilda
+ * Initial Version
+ *
+ *******************************************************************************/
+
+#if !defined(VFORMAT_EXCLUDE_MALLOC)
+
+#ifndef NORCSID
+static const char vf_malloc_stdlib_c_vss_id[] = "$Header: /cvsroot/vformat/src/vformat/src/vf_malloc_stdlib.c,v 1.2 2002/11/15 09:15:00 tilda Exp $";
+#endif
+
+/*=============================================================================*
+ ANSI C & System-wide Header Files
+ *============================================================================*/
+
+#include <common/types.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+/*============================================================================*
+ Interface Header Files
+ *============================================================================*/
+
+#include "vformat/vf_iface.h"
+
+/*============================================================================*
+ Local Header File
+ *============================================================================*/
+
+#include "vf_config.h"
+#include "vf_malloc.h"
+#include "vf_strings.h"
+
+/*============================================================================*
+ Public Data
+ *============================================================================*/
+/* None */
+
+/*============================================================================*
+ Private Defines
+ *============================================================================*/
+
+#define NUMMEMBLOCKS (1024)
+
+#if defined(WIN) || defined(WIN32)
+#define DEBUGBREAK _asm { int 3 }
+#endif
+
+#ifndef DEBUGBREAK
+#define DEBUGBREAK
+#endif
+
+#define ALLOCBREAK (-1)
+
+/*============================================================================*
+ Private Data Types
+ *============================================================================*/
+
+typedef struct MEMBLOCK_T
+{
+ void *p; /* The block */
+ uint32_t s; /* The size */
+ char *file; /* filename it was allocated in */
+ int line; /* line number */
+}
+MEMBLOCK_T;
+
+/*============================================================================*
+ Private Function Prototypes
+ *============================================================================*/
+
+#if defined(VFORMAT_MEM_DEBUG)
+static void init_mem_debug(void);
+static void atexit_dump_mem(void);
+#endif
+
+/*============================================================================*
+ Private Data
+ *============================================================================*/
+
+static MEMBLOCK_T blocks[NUMMEMBLOCKS];
+
+/*============================================================================*
+ Public Function Implementations
+ *============================================================================*/
+
+
+/*----------------------------------------------------------------------------*
+ * NAME
+ * _vf_stdlib_malloc()
+ *
+ * DESCRIPTION
+ * vformat compatible memory allocator using C standard library functions.
+ *
+ * RETURNS
+ * Ptr to new block, or NULL if failed.
+ *----------------------------------------------------------------------------*/
+
+void *_vf_stdlib_malloc(
+ uint32_t s /* Size required */
+#if defined(VFORMAT_MEM_DEBUG)
+ , const char *file, /* filename */
+ int line /* line number */
+#endif
+ )
+{
+ void *p = NULL;
+
+#if defined(VFORMAT_MEM_DEBUG)
+
+ uint32_t i;
+
+ init_mem_debug();
+
+ for (i = 0;i < NUMMEMBLOCKS;i++)
+ {
+ if (blocks[i].p)
+ {
+ }
+ else
+ {
+ p = malloc(s);
+
+ if (p)
+ {
+ blocks[i].p = p;
+ blocks[i].s = s;
+ blocks[i].file = (char *)file;
+ blocks[i].line = line;
+ }
+
+ if (i == ALLOCBREAK)
+ {
+ DEBUGBREAK;
+ }
+
+ break;
+ }
+ }
+
+#else /*defined(VFORMAT_MEM_DEBUG)*/
+
+ p = malloc(s);
+
+#endif
+
+ return p;
+}
+
+
+
+
+
+/*----------------------------------------------------------------------------*
+ * NAME
+ * _vf_stdlib_realloc()
+ *
+ * DESCRIPTION
+ * Re-allocate chunk of memory allocated by _vf_malloc().
+ *
+ * RETURNS
+ * Ptr to new block, or NULL if failed.
+ *----------------------------------------------------------------------------*/
+
+void *_vf_stdlib_realloc(
+ void *p, /* Original pointer */
+ uint32_t s /* Size required */
+#if defined(VFORMAT_MEM_DEBUG)
+ , const char *file, /* Filename */
+ int line /* Line number */
+#endif
+ )
+{
+ void *np = NULL;
+
+#if defined(VFORMAT_MEM_DEBUG)
+
+ uint32_t i;
+
+ init_mem_debug();
+
+ if (!p)
+ return _vf_stdlib_malloc(s, file, line);
+
+ for (i = 0;i < NUMMEMBLOCKS;i++)
+ {
+ if (blocks[i].p == p)
+ {
+ np = realloc(p, s);
+
+ if (np)
+ {
+ blocks[i].p = np;
+ blocks[i].s = s;
+ }
+
+ break;
+ }
+ }
+
+#else /*defined(VFORMAT_MEM_DEBUG)*/
+
+ np = realloc(p, s);
+
+#endif /*defined(VFORMAT_MEM_DEBUG)*/
+
+ return np;
+}
+
+
+
+
+
+/*----------------------------------------------------------------------------*
+ * NAME
+ * _vf_stdlib_free()
+ *
+ * DESCRIPTION
+ * De-allocate chunk of memory allocated by _vf_malloc().
+ *
+ * RETURNS
+ * (none)
+ *----------------------------------------------------------------------------*/
+
+void _vf_stdlib_free(
+ void *p /* Pointer */
+#if defined(VFORMAT_MEM_DEBUG)
+ , const char *file, /* Filename */
+ int line /* Line number */
+#endif
+ )
+{
+#if defined(VFORMAT_MEM_DEBUG)
+
+ uint32_t i;
+
+ init_mem_debug();
+
+ for (i = 0;i < NUMMEMBLOCKS;i++)
+ {
+ if (blocks[i].p == p)
+ {
+ blocks[i].p = NULL;
+ blocks[i].s = 0;
+ blocks[i].line = 0;
+ blocks[i].file = NULL;
+
+ free(p);
+
+ break;
+ }
+ }
+
+#else
+
+ free(p);
+
+#endif
+}
+
+
+
+
+
+/*----------------------------------------------------------------------------*
+ * NAME
+ * vf_stdlib_dump_alloc_info()
+ *
+ * DESCRIPTION
+ * Display current state of memory allocator.
+ *
+ * RETURNS
+ * TRUE if blocks are currently allocated, FALSE else.
+ *----------------------------------------------------------------------------*/
+
+bool_t vf_stdlib_dump_alloc_info()
+{
+ unsigned long i;
+ unsigned long c, s;
+
+ for (i = 0, c = 0, s = 0;i < NUMMEMBLOCKS;i++)
+ {
+ if (blocks[i].p)
+ {
+ c += 1;
+ s += blocks[i].s;
+
+ printf("block[%lu] size %lu, file %s, line %d\n",
+ i, (unsigned long)blocks[i].s, blocks[i].file, blocks[i].line);
+ }
+ }
+
+ if (c)
+ {
+ printf("... a total of %lu blocks, %lu bytes\n", c, s);
+ }
+
+ return (0 < c) ? TRUE : FALSE;
+}
+
+
+
+/*============================================================================*
+ Private Function Implementations
+ *============================================================================*/
+
+#if defined(VFORMAT_MEM_DEBUG)
+
+/*----------------------------------------------------------------------------*
+ * NAME
+ * init_mem_debug()
+ *
+ * DESCRIPTION
+ * Initialisation function.
+ *
+ * RETURNS
+ * (none)
+ *----------------------------------------------------------------------------*/
+
+static void init_mem_debug()
+{
+ static bool_t init_yet = FALSE;
+
+ if (init_yet)
+ {
+ /* OK */
+ }
+ else
+ {
+ p_memset(blocks, '\0', sizeof(blocks));
+
+ atexit(atexit_dump_mem);
+
+ init_yet = TRUE;
+ }
+}
+
+
+
+
+
+/*----------------------------------------------------------------------------*
+ * NAME
+ * atexit_dump_mem()
+ *
+ * DESCRIPTION
+ * atexit() callback function which dumps memory allocated info.
+ *
+ * RETURNS
+ * (none)
+ *----------------------------------------------------------------------------*/
+
+static void atexit_dump_mem(void)
+{
+ vf_stdlib_dump_alloc_info();
+}
+
+#endif /*defined(VFORMAT_MEM_DEBUG)*/
+
+
+#endif /*defined(VFORMAT_EXCLUDE_MALLOC)*/
+
+
+/*============================================================================*
+ End Of File
+ *============================================================================*/
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