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Fix performance problem: literals were being scanned too often

db4
Slava Pestov 2008-11-25 21:27:07 -06:00
parent 2f025f58ae
commit c7c1f3903f
1 changed files with 10 additions and 9 deletions
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19
vm/data_gc.c
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@ -885,12 +885,13 @@ void garbage_collection(CELL gen,
/* collect objects referenced from older generations */
collect_cards();
if(collecting_gen != TENURED)
/* don't scan code heap unless it has pointers to this
generation or younger */
if(collecting_gen >= last_code_heap_scan)
{
/* don't scan code heap unless it has pointers to this
generation or younger */
if(collecting_gen >= last_code_heap_scan)
if(collecting_gen != TENURED)
{
/* if we are doing code GC, then we will copy over
literals from any code block which gets marked as live.
if we are not doing code GC, just consider all literals
@ -898,12 +899,12 @@ void garbage_collection(CELL gen,
code_heap_scans++;
collect_literals();
if(collecting_accumulation_gen_p())
last_code_heap_scan = collecting_gen;
else
last_code_heap_scan = collecting_gen + 1;
}
if(collecting_accumulation_gen_p())
last_code_heap_scan = collecting_gen;
else
last_code_heap_scan = collecting_gen + 1;
}
collect_next_loop(scan,&newspace->here);