diff options
Diffstat (limited to 'gcc/ggc-page.c')
| -rw-r--r-- | gcc/ggc-page.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/ggc-page.c b/gcc/ggc-page.c index b5a28990e42..54528a5f3a0 100644 --- a/gcc/ggc-page.c +++ b/gcc/ggc-page.c @@ -255,6 +255,10 @@ static struct globals one) before collection is performed. */ #define GGC_MIN_EXPAND_FOR_GC (1.3) +/* Bound `allocated_last_gc' to 4MB, to prevent the memory expansion + test from triggering too often when the heap is small. */ +#define GGC_MIN_LAST_ALLOCATED (4 * 1024 * 1024) + static page_entry *lookup_page_table_entry PROTO ((void *)); static void set_page_table_entry PROTO ((void *, page_entry *)); @@ -724,9 +728,7 @@ init_ggc () G.debug_file = stdout; #endif - /* Set the initial allocation to 4MB, so no collection will be - performed until the heap is somewhat larger than 4 MB. */ - G.allocated_last_gc = 4 * 1024 * 1024; + G.allocated_last_gc = GGC_MIN_LAST_ALLOCATED; empty_string = ggc_alloc_string ("", 0); ggc_add_string_root (&empty_string, 1); @@ -1034,6 +1036,8 @@ ggc_collect () #endif G.allocated_last_gc = G.allocated; + if (G.allocated_last_gc < GGC_MIN_LAST_ALLOCATED) + G.allocated_last_gc = GGC_MIN_LAST_ALLOCATED; time = get_run_time () - time; gc_time += time; |