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double full GCs to help clean up after finalizers

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svn: r7809
This commit is contained in:
Matthew Flatt 2007-11-22 00:35:54 +00:00
parent 9ed266faaf
commit 11b45ef610
1 changed files with 17 additions and 0 deletions
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17
src/mzscheme/gc2/newgc.c
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@ -2872,6 +2872,12 @@ extern double scheme_get_inexact_milliseconds(void);
# define TIME_DONE() /**/ # define TIME_DONE() /**/
#endif #endif
/* Full GCs trigger finalization. Finalization releases data
in the old generation. So one more full GC is needed to
really clean up. The another_full flag triggers the
second full GC. */
static int another_full;
static void garbage_collect(int force_full) static void garbage_collect(int force_full)
{ {
static unsigned long number = 0; static unsigned long number = 0;
@ -2879,6 +2885,7 @@ static void garbage_collect(int force_full)
static unsigned int running_finalizers = 0; static unsigned int running_finalizers = 0;
static unsigned long last_full_mem_use = (20 * 1024 * 1024); static unsigned long last_full_mem_use = (20 * 1024 * 1024);
unsigned long old_mem_use = memory_in_use; unsigned long old_mem_use = memory_in_use;
int orig_gc_full;
TIME_DECLS(); TIME_DECLS();
/* determine if this should be a full collection or not */ /* determine if this should be a full collection or not */
@ -2888,6 +2895,13 @@ static void garbage_collect(int force_full)
/* gc_full, force_full, !generations_available, */ /* gc_full, force_full, !generations_available, */
/* (since_last_full > 100), (memory_in_use > (2 * last_full_mem_use))); */ /* (since_last_full > 100), (memory_in_use > (2 * last_full_mem_use))); */
orig_gc_full = gc_full;
if (another_full) {
another_full = 0;
gc_full = 1;
}
number++; number++;
INIT_DEBUG_FILE(); DUMP_HEAP(); INIT_DEBUG_FILE(); DUMP_HEAP();
@ -3046,6 +3060,9 @@ static void garbage_collect(int force_full)
} }
DUMP_HEAP(); CLOSE_DEBUG_FILE(); DUMP_HEAP(); CLOSE_DEBUG_FILE();
if (orig_gc_full)
another_full = 1;
} }
#if MZ_GC_BACKTRACE #if MZ_GC_BACKTRACE