diff options
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb-object-private.hh')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-src/src/hb-object-private.hh | 108 |
1 files changed, 105 insertions, 3 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-object-private.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-object-private.hh index 36d27a8913e..47255488274 100644 --- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-object-private.hh +++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-object-private.hh @@ -35,9 +35,107 @@ #include "hb-private.hh" #include "hb-atomic-private.hh" #include "hb-mutex-private.hh" +#include "hb-vector-private.hh" -/* reference_count */ +/* + * Lockable set + */ + +template <typename item_t, typename lock_t> +struct hb_lockable_set_t +{ + hb_vector_t <item_t, 1> items; + + inline void init (void) { items.init (); } + + template <typename T> + inline item_t *replace_or_insert (T v, lock_t &l, bool replace) + { + l.lock (); + item_t *item = items.find (v); + if (item) { + if (replace) { + item_t old = *item; + *item = v; + l.unlock (); + old.fini (); + } + else { + item = nullptr; + l.unlock (); + } + } else { + item = items.push (v); + l.unlock (); + } + return item; + } + + template <typename T> + inline void remove (T v, lock_t &l) + { + l.lock (); + item_t *item = items.find (v); + if (item) { + item_t old = *item; + *item = items[items.len - 1]; + items.pop (); + l.unlock (); + old.fini (); + } else { + l.unlock (); + } + } + + template <typename T> + inline bool find (T v, item_t *i, lock_t &l) + { + l.lock (); + item_t *item = items.find (v); + if (item) + *i = *item; + l.unlock (); + return !!item; + } + + template <typename T> + inline item_t *find_or_insert (T v, lock_t &l) + { + l.lock (); + item_t *item = items.find (v); + if (!item) { + item = items.push (v); + } + l.unlock (); + return item; + } + + inline void fini (lock_t &l) + { + if (!items.len) { + /* No need for locking. */ + items.fini (); + return; + } + l.lock (); + while (items.len) { + item_t old = items[items.len - 1]; + items.pop (); + l.unlock (); + old.fini (); + l.lock (); + } + items.fini (); + l.unlock (); + } + +}; + + +/* + * Reference-count. + */ #define HB_REFERENCE_COUNT_INERT_VALUE 0 #define HB_REFERENCE_COUNT_POISON_VALUE -0x0000DEAD @@ -89,7 +187,9 @@ struct hb_user_data_array_t }; -/* object_header */ +/* + * Object header + */ struct hb_object_header_t { @@ -103,7 +203,9 @@ struct hb_object_header_t }; -/* object */ +/* + * Object + */ template <typename Type> static inline void hb_object_trace (const Type *obj, const char *function) |