mirror of https://github.com/snes9xgit/snes9x.git
115 lines
3.4 KiB
C
Executable File
115 lines
3.4 KiB
C
Executable File
/* ===========================================================================
|
|
|
|
PROJECT: FakeHandles
|
|
|
|
FILE: FakeHandles.h
|
|
|
|
PURPOSE: Simulate Handles on machines which only have ANSI-C to easily
|
|
port some of the more simple Macintosh code fragments to other
|
|
platforms.
|
|
|
|
(C) Copyright 1998 by Uli Kusterer, all rights reserved.
|
|
|
|
DIRECTIONS:
|
|
A Handle is a memory block that remembers its size automatically.
|
|
To the user, a Handle is simply a pointer to a pointer to the actual
|
|
data. Dereference it twice to get at the actual data. Before you
|
|
pass a once-dereferenced Handle to any other functions, you need to
|
|
call HLock() on it to avoid that it moves. Call HUnlock() when you
|
|
are finished with that.
|
|
To create a Handle, use NewHandle(). To free a Handle, call
|
|
DisposeHandle(). To resize use SetHandleSize() (the Handle itself
|
|
will not change, but the pointer to the actual data may change),
|
|
GetHandleSize() returns the actual size of the Handle.
|
|
Before making any of these calls, you *must have* called
|
|
InitHandles().
|
|
|
|
======================================================================== */
|
|
|
|
#ifndef FAKEHANDLES_H
|
|
#define FAKEHANDLES_H
|
|
|
|
#pragma mark [Headers]
|
|
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// Headers:
|
|
// -----------------------------------------------------------------------------
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <stdbool.h>
|
|
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// Constants:
|
|
// -----------------------------------------------------------------------------
|
|
|
|
#ifndef NULL
|
|
#define NULL 0L
|
|
#endif
|
|
|
|
#define MASTERPOINTER_CHUNK_SIZE 1024 // Size of blocks of master pointers we allocate in one go.
|
|
|
|
|
|
// Error codes MemError() may return after Handle calls:
|
|
enum
|
|
{
|
|
#ifndef __MACTYPES__
|
|
noErr = 0, // No error, success.
|
|
#endif /* __MACTYPES__ */
|
|
memFulErr = -108 // Out of memory error.
|
|
};
|
|
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// Data Types:
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// Data types special to Mac:
|
|
|
|
typedef char** Handle;
|
|
#ifndef __MACTYPES__
|
|
typedef unsigned char Boolean;
|
|
#endif /* __MACTYPES__ */
|
|
|
|
|
|
// Private data structure used internally to keep track of Handles:
|
|
typedef struct MasterPointer
|
|
{
|
|
char* actualPointer; // The actual Pointer we're pointing to.
|
|
Boolean used; // Is this master Ptr being used?
|
|
long memoryFlags; // Some flags for this Handle.
|
|
long size; // The size of this Handle.
|
|
} MasterPointer;
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// Globals:
|
|
// -----------------------------------------------------------------------------
|
|
|
|
extern MasterPointer gMasterPointers[MASTERPOINTER_CHUNK_SIZE];
|
|
extern long gFakeHandleError;
|
|
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// Prototypes:
|
|
// -----------------------------------------------------------------------------
|
|
|
|
extern void FakeInitHandles( MasterPointer* masterPtrArray );
|
|
extern Handle FakeNewHandle( long theSize );
|
|
extern void FakeDisposeHandle( Handle theHand );
|
|
extern long FakeGetHandleSize( Handle theHand );
|
|
extern void FakeSetHandleSize( Handle theHand, long theSize );
|
|
extern void FakeMoreMasters( void );
|
|
extern Handle FakeNewEmptyHandle();
|
|
extern void FakeEmptyHandle( Handle theHand );
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#endif /*FAKEHANDLES_H*/
|