diff options
Diffstat (limited to 'erts/emulator/beam/index.c')
-rw-r--r-- | erts/emulator/beam/index.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/erts/emulator/beam/index.c b/erts/emulator/beam/index.c index 26d6c04ea0..cd834e2c12 100644 --- a/erts/emulator/beam/index.c +++ b/erts/emulator/beam/index.c @@ -27,7 +27,7 @@ #include "global.h" #include "index.h" -void index_info(int to, void *arg, IndexTable *t) +void index_info(fmtfn_t to, void *arg, IndexTable *t) { hash_info(to, arg, &t->htable); erts_print(to, arg, "=index_table:%s\n", t->htable.name); @@ -91,9 +91,16 @@ index_put_entry(IndexTable* t, void* tmpl) t->seg_table[ix>>INDEX_PAGE_SHIFT] = erts_alloc(t->type, sz); t->size += INDEX_PAGE_SIZE; } - t->entries++; p->index = ix; t->seg_table[ix>>INDEX_PAGE_SHIFT][ix&INDEX_PAGE_MASK] = p; + + /* + * Do a write barrier here to allow readers to do lock free iteration. + * erts_index_num_entries() does matching read barrier. + */ + ERTS_SMP_WRITE_MEMORY_BARRIER; + t->entries++; + return p; } |