diff options
Diffstat (limited to 'gcc/hash-table.h')
| -rw-r--r-- | gcc/hash-table.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/hash-table.h b/gcc/hash-table.h index 3f49345a909..5f3dbede8c1 100644 --- a/gcc/hash-table.h +++ b/gcc/hash-table.h @@ -91,7 +91,7 @@ along with GCC; see the file COPYING3. If not see We compose this into a few steps. 1. Decide on a removal policy for values stored in the table. - hash-traits.h provides class templates for the three most common + hash-traits.h provides class templates for the four most common policies: * typed_free_remove implements the static 'remove' member function @@ -105,6 +105,13 @@ along with GCC; see the file COPYING3. If not see Use this for garbage-collected data that needs to be preserved across collections. + * ggc_cache_remove is like ggc_remove, except that it does not + mark the entries during the normal gc mark phase. Instead it + uses 'keep_cache_entry' (described above) to keep elements that + were not collected and delete those that were. Use this for + garbage-collected caches that should not in themselves stop + the data from being collected. + You can use these policies by simply deriving the descriptor type from one of those class template, with the appropriate argument. |