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@@ -1,5 +1,5 @@
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/*
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-** $Id: lgc.h,v 2.87 2015/08/03 19:40:42 roberto Exp roberto $
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+** $Id: lgc.h,v 2.88 2015/10/20 17:56:21 roberto Exp roberto $
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** Garbage Collector
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** See Copyright Notice in lua.h
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*/
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@@ -101,9 +101,16 @@
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#define luaC_white(g) cast(lu_byte, (g)->currentwhite & WHITEBITS)
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+/*
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+** Does one step of collection when debt becomes positive. 'pre'/'pos'
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+** allows some adjustments to be done only when needed. macro
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+** 'condchangemem' is used only for heavy tests (forcing a full
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+** GC cycle on every opportunity)
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+*/
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#define luaC_condGC(L,pre,pos) \
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{if (G(L)->GCdebt > 0) { pre; luaC_step(L); pos;}; condchangemem(L);}
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+/* more often than not, 'pre'/'pos' are empty */
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#define luaC_checkGC(L) luaC_condGC(L,,)
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Roberto Ierusalimschy