diff options
Diffstat (limited to 'libXt/src/Alloc.c')
| -rw-r--r-- | libXt/src/Alloc.c | 1082 |
1 files changed, 541 insertions, 541 deletions
diff --git a/libXt/src/Alloc.c b/libXt/src/Alloc.c index be643a822..b0c4072cd 100644 --- a/libXt/src/Alloc.c +++ b/libXt/src/Alloc.c @@ -1,541 +1,541 @@ -/*********************************************************** -Copyright (c) 1993, 2011, Oracle and/or its affiliates. All rights reserved. - -Permission is hereby granted, free of charge, to any person obtaining a -copy of this software and associated documentation files (the "Software"), -to deal in the Software without restriction, including without limitation -the rights to use, copy, modify, merge, publish, distribute, sublicense, -and/or sell copies of the Software, and to permit persons to whom the -Software is furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice (including the next -paragraph) shall be included in all copies or substantial portions of the -Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL -THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING -FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER -DEALINGS IN THE SOFTWARE. - -Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts. - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of Digital not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. - -******************************************************************/ - -/* - -Copyright 1987, 1988, 1998 The Open Group - -Permission to use, copy, modify, distribute, and sell this software and its -documentation for any purpose is hereby granted without fee, provided that -the above copyright notice appear in all copies and that both that -copyright notice and this permission notice appear in supporting -documentation. - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN -AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN -CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - -Except as contained in this notice, the name of The Open Group shall not be -used in advertising or otherwise to promote the sale, use or other dealings -in this Software without prior written authorization from The Open Group. - -*/ - -/* - * X Toolkit Memory Allocation Routines - * - * Uses Xlib memory management, which is spec'd to be re-entrant. - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include "IntrinsicI.h" -#include "InitialI.h" -#undef _XBCOPYFUNC - -#include <stdlib.h> -#include <stdio.h> -#include <stdarg.h> - -#define Xmalloc(size) malloc((size)) -#define Xrealloc(ptr, size) realloc((ptr), (size)) -#define Xcalloc(nelem, elsize) calloc((nelem), (elsize)) -#define Xfree(ptr) free(ptr) - -#ifdef _XNEEDBCOPYFUNC -void _XtBcopy( - char *src, char *dst, - int length) -{ - if (src < dst) { - dst += length; - src += length; - while (length--) - *--dst = *--src; - } else { - while (length--) - *dst++ = *src++; - } -} -#endif - -void _XtAllocError( - String type) -{ - Cardinal num_params = 1; - if (type == NULL) type = "local memory allocation"; - XtErrorMsg("allocError", type, XtCXtToolkitError, - "Cannot perform %s", &type, &num_params); -} - -void _XtHeapInit( - Heap* heap) -{ - heap->start = NULL; - heap->bytes_remaining = 0; -} - -/* Version of asprintf() using XtMalloc - * Not currently available in XTTRACEMEMORY version, since that would - * require varargs macros everywhere, which are only standard in C99 & later. - */ -Cardinal XtAsprintf( - String *new_string, - _Xconst char * _X_RESTRICT_KYWD format, - ...) -{ - char buf[256]; - Cardinal len; - va_list ap; - - va_start(ap, format); - len = vsnprintf(buf, sizeof(buf), format, ap); - va_end(ap); - - if (len < 0) - _XtAllocError("vsnprintf"); - - *new_string = XtMalloc(len + 1); /* snprintf doesn't count trailing '\0' */ - if (len < sizeof(buf)) - { - strncpy(*new_string, buf, len); - (*new_string)[len] = '\0'; - } - else - { - va_start(ap, format); - if (vsnprintf(*new_string, len + 1, format, ap) < 0) - _XtAllocError("vsnprintf"); - va_end(ap); - } - return len; -} - - -#ifndef XTTRACEMEMORY - -char *XtMalloc( - unsigned size) -{ - char *ptr; - -#if defined(MALLOC_0_RETURNS_NULL) && defined(XTMALLOC_BC) - /* preserve this (broken) behavior until everyone fixes their apps */ - if (!size) size = 1; -#endif - if ((ptr = Xmalloc(size)) == NULL) - _XtAllocError("malloc"); - - return(ptr); -} - -char *XtRealloc( - char *ptr, - unsigned size) -{ - if (ptr == NULL) { -#ifdef MALLOC_0_RETURNS_NULL - if (!size) size = 1; -#endif - return(XtMalloc(size)); - } else if ((ptr = Xrealloc(ptr, size)) == NULL -#ifdef MALLOC_0_RETURNS_NULL - && size -#endif - ) - _XtAllocError("realloc"); - - return(ptr); -} - -char *XtCalloc( - unsigned num, unsigned size) -{ - char *ptr; - -#if defined(MALLOC_0_RETURNS_NULL) && defined(XTMALLOC_BC) - /* preserve this (broken) behavior until everyone fixes their apps */ - if (!size) num = size = 1; -#endif - if ((ptr = Xcalloc(num, size)) == NULL) - _XtAllocError("calloc"); - - return(ptr); -} - -void XtFree( - char *ptr) -{ - if (ptr != NULL) Xfree(ptr); -} - -char* __XtMalloc( - unsigned size) -{ -#ifdef MALLOC_0_RETURNS_NULL - if (!size) size = 1; -#endif - return XtMalloc (size); -} - -char* __XtCalloc( - unsigned num, unsigned size) -{ -#ifdef MALLOC_0_RETURNS_NULL - if (!size) num = size = 1; -#endif - return XtCalloc(num, size); -} - -#ifndef HEAP_SEGMENT_SIZE -#define HEAP_SEGMENT_SIZE 1492 -#endif - -char* _XtHeapAlloc( - Heap* heap, - Cardinal bytes) -{ - register char* heap_loc; - if (heap == NULL) return XtMalloc(bytes); - if (heap->bytes_remaining < (int)bytes) { - if ((bytes + sizeof(char*)) >= (HEAP_SEGMENT_SIZE>>1)) { - /* preserve current segment; insert this one in front */ -#ifdef _TRACE_HEAP - printf( "allocating large segment (%d bytes) on heap %#x\n", - bytes, heap ); -#endif - heap_loc = XtMalloc(bytes + sizeof(char*)); - if (heap->start) { - *(char**)heap_loc = *(char**)heap->start; - *(char**)heap->start = heap_loc; - } - else { - *(char**)heap_loc = NULL; - heap->start = heap_loc; - } - return heap_loc + sizeof(char*); - } - /* else discard remainder of this segment */ -#ifdef _TRACE_HEAP - printf( "allocating new segment on heap %#x\n", heap ); -#endif - heap_loc = XtMalloc((unsigned)HEAP_SEGMENT_SIZE); - *(char**)heap_loc = heap->start; - heap->start = heap_loc; - heap->current = heap_loc + sizeof(char*); - heap->bytes_remaining = HEAP_SEGMENT_SIZE - sizeof(char*); - } - bytes = (bytes + (sizeof(long) - 1)) & (~(sizeof(long) - 1)); - heap_loc = heap->current; - heap->current += bytes; - heap->bytes_remaining -= bytes; /* can be negative, if rounded */ - return heap_loc; -} - -void _XtHeapFree( - Heap* heap) -{ - char* segment = heap->start; - while (segment != NULL) { - char* next_segment = *(char**)segment; - XtFree(segment); - segment = next_segment; - } - heap->start = NULL; - heap->bytes_remaining = 0; -} - -#else - -/* - * X Toolkit Memory Trace Allocation Routines - */ - -#undef XtMalloc -#undef XtRealloc -#undef XtCalloc -#undef XtFree - -typedef struct _Stats *StatsPtr; -typedef struct _Stats { - StatsPtr prev, next; - char *file; - int line; - unsigned size; - unsigned long seq; - XtPointer heap; -} Stats; - -static StatsPtr XtMemory = (StatsPtr)NULL; -static unsigned long ActiveXtMemory = 0; -static unsigned long XtSeqId = 0; -static unsigned long XtSeqBreakpoint = ~0; - -#define StatsSize(n) ((((n) + (sizeof(long) - 1)) & ~(sizeof(long) - 1)) + sizeof(Stats)) -#define ToStats(ptr) ((StatsPtr)(ptr - sizeof(Stats))) -#define ToMem(ptr) (((char *)ptr) + sizeof(Stats)) - -#define CHAIN(ptr,len,hp) \ - ptr->next = XtMemory; \ - if (XtMemory) \ - XtMemory->prev = ptr; \ - XtMemory = ptr; \ - ptr->prev = (StatsPtr)NULL; \ - ptr->file = file; \ - ptr->line = line; \ - ptr->size = len; \ - ptr->heap = hp; \ - if (file) \ - ActiveXtMemory += len; \ - ptr->seq = XtSeqId; \ - if (XtSeqId == XtSeqBreakpoint) \ - _XtBreakpoint(ptr); \ - XtSeqId++ - -/*ARGUSED*/ -static void _XtBreakpoint( - StatsPtr mem) -{ - mem->seq = XtSeqId; /* avoid being optimized out of existence */ -} - -char *_XtMalloc( - unsigned size, - char *file, - int line) -{ - StatsPtr ptr; - unsigned newsize; - char* retval = NULL; - - LOCK_PROCESS; - newsize = StatsSize(size); - if ((ptr = (StatsPtr)Xmalloc(newsize)) == NULL) - _XtAllocError("malloc"); - CHAIN(ptr, size, NULL); - retval = (ToMem(ptr)); - UNLOCK_PROCESS; - return retval; -} - -char *XtMalloc( - unsigned size) -{ - return _XtMalloc(size, (char *)NULL, 0); -} - -char *_XtRealloc( - char *ptr, - unsigned size, - char *file, - int line) -{ - char *newptr; - - LOCK_PROCESS; - newptr = _XtMalloc(size, file, line); - if (ptr) { - unsigned copysize = ToStats(ptr)->size; - if (copysize > size) copysize = size; - memmove(newptr, ptr, copysize); - _XtFree(ptr); - } - UNLOCK_PROCESS; - return(newptr); -} - -char *XtRealloc( - char *ptr, - unsigned size) -{ - return _XtRealloc(ptr, size, (char *)NULL, 0); -} - -char *_XtCalloc( - unsigned num, unsigned size, - char *file, - int line) -{ - StatsPtr ptr; - unsigned total, newsize; - char* retval = NULL; - - LOCK_PROCESS; - total = num * size; - newsize = StatsSize(total); - if ((ptr = (StatsPtr)Xcalloc(newsize, 1)) == NULL) - _XtAllocError("calloc"); - CHAIN(ptr, total, NULL); - retval = (ToMem(ptr)); - UNLOCK_PROCESS; - return retval; -} - -char *XtCalloc( - unsigned num, unsigned size) -{ - return _XtCalloc(num, size, (char *)NULL, 0); -} - -Boolean _XtIsValidPointer( - char *ptr) -{ - register StatsPtr mem; - register StatsPtr stp = ToStats(ptr); - - LOCK_PROCESS; - for (mem = XtMemory; mem; mem = mem->next) { - if (mem == stp) { - UNLOCK_PROCESS; - return True; - } - } - UNLOCK_PROCESS; - return False; -} - -Boolean _XtValidateMemory = False; - -void _XtFree( - char *ptr) -{ - register StatsPtr stp; - - LOCK_PROCESS; - if (ptr) { - if (_XtValidateMemory && !_XtIsValidPointer(ptr)) - abort(); - stp = ToStats(ptr); - if (stp->file) - ActiveXtMemory -= stp->size; - if (stp->prev) - stp->prev->next = stp->next; - else - XtMemory = stp->next; - if (stp->next) - stp->next->prev = stp->prev; - Xfree((char *)stp); - } - UNLOCK_PROCESS; -} - -void XtFree(char *ptr) -{ - _XtFree(ptr); -} - -char *_XtHeapMalloc( - Heap *heap, - Cardinal size, - char *file, - int line) -{ - StatsPtr ptr; - unsigned newsize; - XtPointer hp = (XtPointer) heap; - char* retval = NULL; - - LOCK_PROCESS; - newsize = StatsSize(size); - if ((ptr = (StatsPtr)Xmalloc(newsize)) == NULL) - _XtAllocError("malloc"); - CHAIN(ptr, size, hp); - retval = (ToMem(ptr)); - UNLOCK_PROCESS; - return retval; -} - -void _XtHeapFree(register XtPointer heap) -{ - register StatsPtr mem, next; - - LOCK_PROCESS; - for (mem = XtMemory; mem; mem = next) { - next = mem->next; - if (mem->heap == heap) { - if (mem->file) - ActiveXtMemory -= mem->size; - if (mem->prev) - mem->prev->next = next; - else - XtMemory = next; - if (next) - next->prev = mem->prev; - Xfree((char *)mem); - } - } - UNLOCK_PROCESS; -} - -#include <stdio.h> - -void _XtPrintMemory(char * filename) -{ - register StatsPtr mem; - FILE *f; - - if (filename == NULL) - f = stderr; - else - f = fopen(filename, "w"); - LOCK_PROCESS; - fprintf(f, "total size: %d\n", ActiveXtMemory); - for (mem = XtMemory; mem; mem = mem->next) { - if (mem->file) - fprintf(f, "size: %6d seq: %5d %12s(%4d) %s\n", - mem->size, mem->seq, - mem->file, mem->line, mem->heap ? "heap" : ""); - } - UNLOCK_PROCESS; - if (filename) fclose(f); -} - -#endif /* XTTRACEMEMORY */ +/***********************************************************
+Copyright (c) 1993, 2011, Oracle and/or its affiliates. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the next
+paragraph) shall be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************/
+
+/*
+
+Copyright 1987, 1988, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+*/
+
+/*
+ * X Toolkit Memory Allocation Routines
+ *
+ * Uses Xlib memory management, which is spec'd to be re-entrant.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "IntrinsicI.h"
+#include "InitialI.h"
+#undef _XBCOPYFUNC
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#define Xmalloc(size) malloc((size))
+#define Xrealloc(ptr, size) realloc((ptr), (size))
+#define Xcalloc(nelem, elsize) calloc((nelem), (elsize))
+#define Xfree(ptr) free(ptr)
+
+#ifdef _XNEEDBCOPYFUNC
+void _XtBcopy(
+ char *src, char *dst,
+ int length)
+{
+ if (src < dst) {
+ dst += length;
+ src += length;
+ while (length--)
+ *--dst = *--src;
+ } else {
+ while (length--)
+ *dst++ = *src++;
+ }
+}
+#endif
+
+void _XtAllocError(
+ String type)
+{
+ Cardinal num_params = 1;
+ if (type == NULL) type = "local memory allocation";
+ XtErrorMsg("allocError", type, XtCXtToolkitError,
+ "Cannot perform %s", &type, &num_params);
+}
+
+void _XtHeapInit(
+ Heap* heap)
+{
+ heap->start = NULL;
+ heap->bytes_remaining = 0;
+}
+
+/* Version of asprintf() using XtMalloc
+ * Not currently available in XTTRACEMEMORY version, since that would
+ * require varargs macros everywhere, which are only standard in C99 & later.
+ */
+Cardinal XtAsprintf(
+ String *new_string,
+ _Xconst char * _X_RESTRICT_KYWD format,
+ ...)
+{
+ char buf[256];
+ Cardinal len;
+ va_list ap;
+
+ va_start(ap, format);
+ len = vsnprintf(buf, sizeof(buf), format, ap);
+ va_end(ap);
+
+ if (len < 0)
+ _XtAllocError("vsnprintf");
+
+ *new_string = XtMalloc(len + 1); /* snprintf doesn't count trailing '\0' */
+ if (len < sizeof(buf))
+ {
+ strncpy(*new_string, buf, len);
+ (*new_string)[len] = '\0';
+ }
+ else
+ {
+ va_start(ap, format);
+ if (vsnprintf(*new_string, len + 1, format, ap) < 0)
+ _XtAllocError("vsnprintf");
+ va_end(ap);
+ }
+ return len;
+}
+
+
+#ifndef XTTRACEMEMORY
+
+char *XtMalloc(
+ unsigned size)
+{
+ char *ptr;
+
+#if defined(MALLOC_0_RETURNS_NULL) && defined(XTMALLOC_BC)
+ /* preserve this (broken) behavior until everyone fixes their apps */
+ if (!size) size = 1;
+#endif
+ if ((ptr = Xmalloc(size)) == NULL)
+ _XtAllocError("malloc");
+
+ return(ptr);
+}
+
+char *XtRealloc(
+ char *ptr,
+ unsigned size)
+{
+ if (ptr == NULL) {
+#ifdef MALLOC_0_RETURNS_NULL
+ if (!size) size = 1;
+#endif
+ return(XtMalloc(size));
+ } else if ((ptr = Xrealloc(ptr, size)) == NULL
+#ifdef MALLOC_0_RETURNS_NULL
+ && size
+#endif
+ )
+ _XtAllocError("realloc");
+
+ return(ptr);
+}
+
+char *XtCalloc(
+ unsigned num, unsigned size)
+{
+ char *ptr;
+
+#if defined(MALLOC_0_RETURNS_NULL) && defined(XTMALLOC_BC)
+ /* preserve this (broken) behavior until everyone fixes their apps */
+ if (!size) num = size = 1;
+#endif
+ if ((ptr = Xcalloc(num, size)) == NULL)
+ _XtAllocError("calloc");
+
+ return(ptr);
+}
+
+void XtFree(
+ char *ptr)
+{
+ if (ptr != NULL) Xfree(ptr);
+}
+
+char* __XtMalloc(
+ unsigned size)
+{
+#ifdef MALLOC_0_RETURNS_NULL
+ if (!size) size = 1;
+#endif
+ return XtMalloc (size);
+}
+
+char* __XtCalloc(
+ unsigned num, unsigned size)
+{
+#ifdef MALLOC_0_RETURNS_NULL
+ if (!size) num = size = 1;
+#endif
+ return XtCalloc(num, size);
+}
+
+#ifndef HEAP_SEGMENT_SIZE
+#define HEAP_SEGMENT_SIZE 1492
+#endif
+
+char* _XtHeapAlloc(
+ Heap* heap,
+ Cardinal bytes)
+{
+ register char* heap_loc;
+ if (heap == NULL) return XtMalloc(bytes);
+ if (heap->bytes_remaining < (int)bytes) {
+ if ((bytes + sizeof(char*)) >= (HEAP_SEGMENT_SIZE>>1)) {
+ /* preserve current segment; insert this one in front */
+#ifdef _TRACE_HEAP
+ printf( "allocating large segment (%d bytes) on heap %#x\n",
+ bytes, heap );
+#endif
+ heap_loc = XtMalloc(bytes + sizeof(char*));
+ if (heap->start) {
+ *(char**)heap_loc = *(char**)heap->start;
+ *(char**)heap->start = heap_loc;
+ }
+ else {
+ *(char**)heap_loc = NULL;
+ heap->start = heap_loc;
+ }
+ return heap_loc + sizeof(char*);
+ }
+ /* else discard remainder of this segment */
+#ifdef _TRACE_HEAP
+ printf( "allocating new segment on heap %#x\n", heap );
+#endif
+ heap_loc = XtMalloc((unsigned)HEAP_SEGMENT_SIZE);
+ *(char**)heap_loc = heap->start;
+ heap->start = heap_loc;
+ heap->current = heap_loc + sizeof(char*);
+ heap->bytes_remaining = HEAP_SEGMENT_SIZE - sizeof(char*);
+ }
+ bytes = (bytes + (sizeof(long) - 1)) & (~(sizeof(long) - 1));
+ heap_loc = heap->current;
+ heap->current += bytes;
+ heap->bytes_remaining -= bytes; /* can be negative, if rounded */
+ return heap_loc;
+}
+
+void _XtHeapFree(
+ Heap* heap)
+{
+ char* segment = heap->start;
+ while (segment != NULL) {
+ char* next_segment = *(char**)segment;
+ XtFree(segment);
+ segment = next_segment;
+ }
+ heap->start = NULL;
+ heap->bytes_remaining = 0;
+}
+
+#else
+
+/*
+ * X Toolkit Memory Trace Allocation Routines
+ */
+
+#undef XtMalloc
+#undef XtRealloc
+#undef XtCalloc
+#undef XtFree
+
+typedef struct _Stats *StatsPtr;
+typedef struct _Stats {
+ StatsPtr prev, next;
+ char *file;
+ int line;
+ unsigned size;
+ unsigned long seq;
+ XtPointer heap;
+} Stats;
+
+static StatsPtr XtMemory = (StatsPtr)NULL;
+static unsigned long ActiveXtMemory = 0;
+static unsigned long XtSeqId = 0;
+static unsigned long XtSeqBreakpoint = ~0;
+
+#define StatsSize(n) ((((n) + (sizeof(long) - 1)) & ~(sizeof(long) - 1)) + sizeof(Stats))
+#define ToStats(ptr) ((StatsPtr)(ptr - sizeof(Stats)))
+#define ToMem(ptr) (((char *)ptr) + sizeof(Stats))
+
+#define CHAIN(ptr,len,hp) \
+ ptr->next = XtMemory; \
+ if (XtMemory) \
+ XtMemory->prev = ptr; \
+ XtMemory = ptr; \
+ ptr->prev = (StatsPtr)NULL; \
+ ptr->file = file; \
+ ptr->line = line; \
+ ptr->size = len; \
+ ptr->heap = hp; \
+ if (file) \
+ ActiveXtMemory += len; \
+ ptr->seq = XtSeqId; \
+ if (XtSeqId == XtSeqBreakpoint) \
+ _XtBreakpoint(ptr); \
+ XtSeqId++
+
+/*ARGUSED*/
+static void _XtBreakpoint(
+ StatsPtr mem)
+{
+ mem->seq = XtSeqId; /* avoid being optimized out of existence */
+}
+
+char *_XtMalloc(
+ unsigned size,
+ char *file,
+ int line)
+{
+ StatsPtr ptr;
+ unsigned newsize;
+ char* retval = NULL;
+
+ LOCK_PROCESS;
+ newsize = StatsSize(size);
+ if ((ptr = (StatsPtr)Xmalloc(newsize)) == NULL)
+ _XtAllocError("malloc");
+ CHAIN(ptr, size, NULL);
+ retval = (ToMem(ptr));
+ UNLOCK_PROCESS;
+ return retval;
+}
+
+char *XtMalloc(
+ unsigned size)
+{
+ return _XtMalloc(size, (char *)NULL, 0);
+}
+
+char *_XtRealloc(
+ char *ptr,
+ unsigned size,
+ char *file,
+ int line)
+{
+ char *newptr;
+
+ LOCK_PROCESS;
+ newptr = _XtMalloc(size, file, line);
+ if (ptr) {
+ unsigned copysize = ToStats(ptr)->size;
+ if (copysize > size) copysize = size;
+ memmove(newptr, ptr, copysize);
+ _XtFree(ptr);
+ }
+ UNLOCK_PROCESS;
+ return(newptr);
+}
+
+char *XtRealloc(
+ char *ptr,
+ unsigned size)
+{
+ return _XtRealloc(ptr, size, (char *)NULL, 0);
+}
+
+char *_XtCalloc(
+ unsigned num, unsigned size,
+ char *file,
+ int line)
+{
+ StatsPtr ptr;
+ unsigned total, newsize;
+ char* retval = NULL;
+
+ LOCK_PROCESS;
+ total = num * size;
+ newsize = StatsSize(total);
+ if ((ptr = (StatsPtr)Xcalloc(newsize, 1)) == NULL)
+ _XtAllocError("calloc");
+ CHAIN(ptr, total, NULL);
+ retval = (ToMem(ptr));
+ UNLOCK_PROCESS;
+ return retval;
+}
+
+char *XtCalloc(
+ unsigned num, unsigned size)
+{
+ return _XtCalloc(num, size, (char *)NULL, 0);
+}
+
+Boolean _XtIsValidPointer(
+ char *ptr)
+{
+ register StatsPtr mem;
+ register StatsPtr stp = ToStats(ptr);
+
+ LOCK_PROCESS;
+ for (mem = XtMemory; mem; mem = mem->next) {
+ if (mem == stp) {
+ UNLOCK_PROCESS;
+ return True;
+ }
+ }
+ UNLOCK_PROCESS;
+ return False;
+}
+
+Boolean _XtValidateMemory = False;
+
+void _XtFree(
+ char *ptr)
+{
+ register StatsPtr stp;
+
+ LOCK_PROCESS;
+ if (ptr) {
+ if (_XtValidateMemory && !_XtIsValidPointer(ptr))
+ abort();
+ stp = ToStats(ptr);
+ if (stp->file)
+ ActiveXtMemory -= stp->size;
+ if (stp->prev)
+ stp->prev->next = stp->next;
+ else
+ XtMemory = stp->next;
+ if (stp->next)
+ stp->next->prev = stp->prev;
+ Xfree((char *)stp);
+ }
+ UNLOCK_PROCESS;
+}
+
+void XtFree(char *ptr)
+{
+ _XtFree(ptr);
+}
+
+char *_XtHeapMalloc(
+ Heap *heap,
+ Cardinal size,
+ char *file,
+ int line)
+{
+ StatsPtr ptr;
+ unsigned newsize;
+ XtPointer hp = (XtPointer) heap;
+ char* retval = NULL;
+
+ LOCK_PROCESS;
+ newsize = StatsSize(size);
+ if ((ptr = (StatsPtr)Xmalloc(newsize)) == NULL)
+ _XtAllocError("malloc");
+ CHAIN(ptr, size, hp);
+ retval = (ToMem(ptr));
+ UNLOCK_PROCESS;
+ return retval;
+}
+
+void _XtHeapFree(register XtPointer heap)
+{
+ register StatsPtr mem, next;
+
+ LOCK_PROCESS;
+ for (mem = XtMemory; mem; mem = next) {
+ next = mem->next;
+ if (mem->heap == heap) {
+ if (mem->file)
+ ActiveXtMemory -= mem->size;
+ if (mem->prev)
+ mem->prev->next = next;
+ else
+ XtMemory = next;
+ if (next)
+ next->prev = mem->prev;
+ Xfree((char *)mem);
+ }
+ }
+ UNLOCK_PROCESS;
+}
+
+#include <stdio.h>
+
+void _XtPrintMemory(char * filename)
+{
+ register StatsPtr mem;
+ FILE *f;
+
+ if (filename == NULL)
+ f = stderr;
+ else
+ f = fopen(filename, "w");
+ LOCK_PROCESS;
+ fprintf(f, "total size: %d\n", ActiveXtMemory);
+ for (mem = XtMemory; mem; mem = mem->next) {
+ if (mem->file)
+ fprintf(f, "size: %6d seq: %5d %12s(%4d) %s\n",
+ mem->size, mem->seq,
+ mem->file, mem->line, mem->heap ? "heap" : "");
+ }
+ UNLOCK_PROCESS;
+ if (filename) fclose(f);
+}
+
+#endif /* XTTRACEMEMORY */
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