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- /*
- File: MoreMemory.c
-
- Contains: Memory utility routines.
-
- Written by: Quinn
-
- Copyright: Copyright © 1999 by Apple Computer, Inc., all rights reserved.
-
- You may incorporate this Apple sample source code into your program(s) without
- restriction. This Apple sample source code has been provided "AS IS" and the
- responsibility for its operation is yours. You are not permitted to redistribute
- this Apple sample source code as "Apple sample source code" after having made
- changes. If you're going to re-distribute the source, we require that you make
- it clear in the source that the code was descended from Apple sample source
- code, but that you've made changes.
-
- Change History (most recent first):
-
- <3> 20/3/00 Quinn Added MoreBlockCompare.
- <2> 6/3/00 Quinn Added MoreMemError and temporarily removed SafeHoldMemory from
- Carbon builds.
- <1> 1/3/99 Quinn First checked in.
- */
-
- /////////////////////////////////////////////////////////////////
- // MoreIsBetter Setup
-
- #include "MoreSetup.h"
-
- /////////////////////////////////////////////////////////////////
- // Mac OS Interfaces
-
- #include <Traps.h>
- #include <Patches.h>
- #include <Memory.h>
-
- /////////////////////////////////////////////////////////////////
- // Our Prototypes
-
- #include "MoreMemory.h"
-
- /////////////////////////////////////////////////////////////////
-
- #if CALL_NOT_IN_CARBON
-
- extern pascal OSErr SafeHoldMemory(void *start, ByteCount length)
- // See comment in interface part.
- {
- OSErr err;
-
- err = noErr;
-
- if ( GetOSTrapAddress(_HWPriv) != GetToolTrapAddress(_Unimplemented) ) {
- err = HoldMemory(start, length);
- }
- if (err == paramErr) {
- err = noErr;
- }
-
- return err;
- }
-
- extern pascal OSErr SafeUnholdMemory(void *start, ByteCount length)
- // See comment in interface part.
- {
- OSErr err;
-
- err = noErr;
- if ( GetOSTrapAddress(_HWPriv) != GetToolTrapAddress(_Unimplemented) ) {
- err = UnholdMemory(start, length);
- }
- if (err == paramErr) {
- err = noErr;
- }
- return err;
- }
-
- #endif
-
- extern pascal OSErr MoreMemError(void *p)
- // See comment in interface part.
- {
- OSErr err;
-
- err = MemError();
- if ((err == noErr) && (p == nil)) {
- MoreAssertQ(false);
- err = memFullErr;
- }
- return err;
- }
-
- extern pascal Boolean MoreBlockCompare(const void *p1, const void *p2, ByteCount numBytes)
- // See comment in interface part.
- {
- const UInt8 *cursor1;
- const UInt8 *cursor2;
-
- cursor1 = p1;
- cursor2 = p2;
- while (numBytes > 0 && (*cursor1 == *cursor2)) {
- cursor1 += 1;
- cursor2 += 1;
- numBytes -= 1;
- }
- return (numBytes == 0);
- }
-