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96 lines
3.2 KiB
96 lines
3.2 KiB
//+---------------------------------------------------------------------------
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//
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// Copyright (C) Microsoft Corporation, 1997.
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//
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// alloc.h
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//
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// Global allocation macros and routines.
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//
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// History:
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// Mon Jun 02 16:53:42 1997 -by- Drew Bliss [drewb]
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// Created
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//
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//----------------------------------------------------------------------------
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#ifndef __ALLOC_H__
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#define __ALLOC_H__
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#include <types.h>
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//
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// Usage notes:
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//
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// ALLOC is a direct replacement for malloc().
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// ALLOCZ allocates zero-filled memory.
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// REALLOC is a direct replacement for realloc().
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// FREE is a direct replacement for free().
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//
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// On debug builds these macros evaluate to calls to a memory-tracking
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// allocator. On free builds they make direct heap calls.
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// All of the rest of the allocation routines are built on top of the
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// above macros and so inherit their tracking capabilities.
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//
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// The basic allocation routines also provide a mechanism to randomly
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// cause allocations to fail via manipulation of the glRandomMallocFail
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// variable.
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//
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#if DBG
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extern long glRandomMallocFail;
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void * FASTCALL dbgAlloc(UINT nbytes, DWORD flags);
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void * FASTCALL dbgRealloc(void *mem, UINT nbytes);
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void FASTCALL dbgFree(void *mem);
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int FASTCALL dbgMemSize(void *mem);
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#define ALLOC(nbytes) dbgAlloc((nbytes), 0)
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#define ALLOCZ(nbytes) dbgAlloc((nbytes), HEAP_ZERO_MEMORY)
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#define REALLOC(mem, nbytes) dbgRealloc((mem), (nbytes))
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#define FREE(mem) dbgFree((mem))
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#else // DBG
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#define ALLOC(nbytes) HeapAlloc(GetProcessHeap(), 0, (nbytes))
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#define ALLOCZ(nbytes) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, \
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(nbytes))
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#define REALLOC(mem, nbytes) HeapReAlloc(GetProcessHeap(), 0, (mem), \
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(nbytes))
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#define FREE(mem) HeapFree(GetProcessHeap(), 0, (mem))
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#endif // DBG
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//
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// 32-byte aligned memory allocator.
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//
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void * FASTCALL AllocAlign32(UINT nbytes);
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void FASTCALL FreeAlign32(void *mem);
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//
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// Short-lived memory allocator. This allocator should be used
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// for relatively small allocations (<= 4K) that are only live for
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// a function or two.
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//
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BOOL FASTCALL InitTempAlloc(void);
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void * FASTCALL gcTempAlloc(__GLcontext *gc, UINT nbytes);
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void FASTCALL gcTempFree(__GLcontext *gc, void *mem);
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//
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// Allocator wrappers which automatically set the gc error on failure.
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// The wrappers don't currently do anything extra on frees but
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// having matching free calls allows for per-gc tracking if necessary.
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//
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// Internal worker function.
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void * FASTCALL gcAlloc(__GLcontext *gc, UINT nbytes, DWORD flags);
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#define GCALLOC(gc, nbytes) gcAlloc((gc), (nbytes), 0)
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#define GCALLOCZ(gc, nbytes) gcAlloc((gc), (nbytes), HEAP_ZERO_MEMORY)
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void * FASTCALL GCREALLOC(__GLcontext *gc, void *mem, UINT nbytes);
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#define GCFREE(gc, mem) FREE(mem)
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void * FASTCALL GCALLOCALIGN32(__GLcontext *gc, UINT nbytes);
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#define GCFREEALIGN32(gc, mem) FreeAlign32(mem)
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#endif // #ifndef __ALLOC_H__
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