74 lines
1.7 KiB
C
74 lines
1.7 KiB
C
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/*****************************************************************************
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*
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* mem.h
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*
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*****************************************************************************/
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/*****************************************************************************
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*
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* Arenas
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*
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* Memory is allocated in chunks called arenas. Arenas contain extra
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* bookkeeping in DEBUG to help catch common memory problems like
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* overruns and memory leaks. (It doesn't catch dangling pointers,
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* though.)
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*
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*****************************************************************************/
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typedef unsigned TM; /* Artificial time */
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typedef struct ARENA AR, *PAR;
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struct ARENA {
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#ifdef DEBUG
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PAR parNext; /* Next arena */
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PAR parPrev; /* Previous arena */
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CB cb; /* Size of rgb */
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TM tm; /* Timestamp used to track memory leaks */
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#endif
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BYTE rgb[4]; /* The actual data */
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};
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typedef CONST AR *PCAR;
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#define parPv(pv) pvSubPvCb(pv, offsetof(AR, rgb))
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#ifdef DEBUG
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extern TM g_tmNow;
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extern AR g_arHead;
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#define parHead (&g_arHead)
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#endif
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#ifdef DEBUG
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void STDCALL AssertPar(PCAR par);
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#else
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#define AssertPar(par)
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#endif
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void STDCALL FreePv(PVOID pv);
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PVOID STDCALL pvAllocCb(CB cb);
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PVOID STDCALL pvReallocPvCb(PVOID pv, CB cb);
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INLINE PTCH STDCALL
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ptchAllocCtch(CTCH ctch)
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{
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return pvAllocCb(cbCtch(ctch));
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}
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INLINE PTCH STDCALL
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ptchReallocPtchCtch(PTCH ptch, CTCH ctch)
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{
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return pvReallocPvCb(ptch, cbCtch(ctch));
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}
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/*****************************************************************************
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*
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* Garbage collection
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*
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*****************************************************************************/
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#ifdef DEBUG
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void STDCALL Gc(void);
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#else
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#define Gc()
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#endif
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