lua/src/lgc.c

63 ** 'makewhite' erases all color bits then sets only the current white
150 ** barrier that moves collector forward, that is, mark the white object
152 ** object to white [sweep it] to avoid other barrier calls for this
162     makewhite(g, o);  /* mark main obj. as white to avoid other barriers */
169 ** pointing to a white object as gray again.
358 ** atomic phase. In the atomic phase, if table has any white value,
363   /* if there is array part, assume it may have white values (it is not
373       if (!hasclears && iscleared(g, gval(n)))  /* is there a white value? */
389 ** the atomic phase, if table has any white->white entry, it has to
391 ** black). Otherwise, if it has any white key, table has to be cleared
396   int hasclears = 0;  /* true if table has white keys */
397   int hasww = 0;  /* true if table has entry "white-key -> white-value" */
415         hasww = 1;  /* white-white entry */
425   else if (hasww)  /* table has white->white entries? */
427   else if (hasclears)  /* table has white keys? */
428     linkgclist(h, g->allweak);  /* may have to clean white keys */
731 ** white; change all non-dead objects back to white, preparing for next
738   int white = luaC_white(g);  /* current white */
746     else {  /* change mark to 'white' */
747       curr->marked = cast_byte((marked & maskcolors) | white);
973   g->currentwhite = WHITEBITS; /* this "white" makes all objects look dead */
1023   g->currentwhite = cast_byte(otherwhite(g));  /* flip current white */
1156 ** to sweep all objects to turn them back to white (as white has not
1164     entersweep(L); /* sweep everything to turn them back to white */