The Tor Browser: gfx/harfbuzz/src/hb-object-private.hh@6474c204b198 (annotated)

gfx/harfbuzz/src/hb-object-private.hh@6474c204b198 (annotated)

gfx/harfbuzz/src/hb-object-private.hh

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
  * Copyright © 2007  Chris Wilson
  * Copyright © 2009,2010  Red Hat, Inc.
  * Copyright © 2011,2012  Google, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
  * Permission is hereby granted, without written agreement and without
  * license or royalty fees, to use, copy, modify, and distribute this
  * software and its documentation for any purpose, provided that the
  * above copyright notice and the following two paragraphs appear in
  * all copies of this software.
  *
  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  *
  * Contributor(s):
  *	Chris Wilson <chris@chris-wilson.co.uk>
  * Red Hat Author(s): Behdad Esfahbod
  * Google Author(s): Behdad Esfahbod
  */
 #ifndef HB_OBJECT_PRIVATE_HH
 #define HB_OBJECT_PRIVATE_HH
 #include "hb-private.hh"
 #include "hb-atomic-private.hh"
 #include "hb-mutex-private.hh"
 /* Debug */
 #ifndef HB_DEBUG_OBJECT
 #define HB_DEBUG_OBJECT (HB_DEBUG+0)
 #endif
 /* reference_count */
 #define HB_REFERENCE_COUNT_INVALID_VALUE ((hb_atomic_int_t) -1)
 #define HB_REFERENCE_COUNT_INVALID {HB_REFERENCE_COUNT_INVALID_VALUE}
 struct hb_reference_count_t
 {
   hb_atomic_int_t ref_count;
   inline void init (int v) { ref_count = v; }
   inline int inc (void) { return hb_atomic_int_add (const_cast<hb_atomic_int_t &> (ref_count),  1); }
   inline int dec (void) { return hb_atomic_int_add (const_cast<hb_atomic_int_t &> (ref_count), -1); }
   inline void finish (void) { ref_count = HB_REFERENCE_COUNT_INVALID_VALUE; }
   inline bool is_invalid (void) const { return ref_count == HB_REFERENCE_COUNT_INVALID_VALUE; }
 };
 /* user_data */
 #define HB_USER_DATA_ARRAY_INIT {HB_MUTEX_INIT, HB_LOCKABLE_SET_INIT}
 struct hb_user_data_array_t
 {
   /* TODO Add tracing. */
   struct hb_user_data_item_t {
     hb_user_data_key_t *key;
     void *data;
     hb_destroy_func_t destroy;
     inline bool operator == (hb_user_data_key_t *other_key) const { return key == other_key; }
     inline bool operator == (hb_user_data_item_t &other) const { return key == other.key; }
     void finish (void) { if (destroy) destroy (data); }
   };
   hb_mutex_t lock;
   hb_lockable_set_t<hb_user_data_item_t, hb_mutex_t> items;
   inline void init (void) { lock.init (); items.init (); }
   HB_INTERNAL bool set (hb_user_data_key_t *key,
 			void *              data,
 			hb_destroy_func_t   destroy,
 			hb_bool_t           replace);
   HB_INTERNAL void *get (hb_user_data_key_t *key);
   inline void finish (void) { items.finish (lock); lock.finish (); }
 };
 /* object_header */
 struct hb_object_header_t
 {
   hb_reference_count_t ref_count;
   hb_user_data_array_t user_data;
 #define HB_OBJECT_HEADER_STATIC {HB_REFERENCE_COUNT_INVALID, HB_USER_DATA_ARRAY_INIT}
   static inline void *create (unsigned int size) {
     hb_object_header_t *obj = (hb_object_header_t *) calloc (1, size);
     if (likely (obj))
       obj->init ();
     return obj;
   }
   inline void init (void) {
     ref_count.init (1);
     user_data.init ();
   }
   inline bool is_inert (void) const {
     return unlikely (ref_count.is_invalid ());
   }
   inline void reference (void) {
     if (unlikely (!this || this->is_inert ()))
       return;
     ref_count.inc ();
   }
   inline bool destroy (void) {
     if (unlikely (!this || this->is_inert ()))
       return false;
     if (ref_count.dec () != 1)
       return false;
     ref_count.finish (); /* Do this before user_data */
     user_data.finish ();
     return true;
   }
   inline bool set_user_data (hb_user_data_key_t *key,
 			     void *              data,
 			     hb_destroy_func_t   destroy_func,
 			     hb_bool_t           replace) {
     if (unlikely (!this || this->is_inert ()))
       return false;
     return user_data.set (key, data, destroy_func, replace);
   }
   inline void *get_user_data (hb_user_data_key_t *key) {
     if (unlikely (!this || this->is_inert ()))
       return NULL;
     return user_data.get (key);
   }
   inline void trace (const char *function) const {
     if (unlikely (!this)) return;
     /* TODO We cannot use DEBUG_MSG_FUNC here since that one currently only
      * prints the class name and throws away the template info. */
     DEBUG_MSG (OBJECT, (void *) this,
 	       "%s refcount=%d",
 	       function,
 	       this ? ref_count.ref_count : 0);
   }
   private:
   ASSERT_POD ();
 };
 /* object */
 template <typename Type>
 static inline void hb_object_trace (const Type *obj, const char *function)
 {
   obj->header.trace (function);
 }
 template <typename Type>
 static inline Type *hb_object_create (void)
 {
   Type *obj = (Type *) hb_object_header_t::create (sizeof (Type));
   hb_object_trace (obj, HB_FUNC);
   return obj;
 }
 template <typename Type>
 static inline bool hb_object_is_inert (const Type *obj)
 {
   return unlikely (obj->header.is_inert ());
 }
 template <typename Type>
 static inline Type *hb_object_reference (Type *obj)
 {
   hb_object_trace (obj, HB_FUNC);
   obj->header.reference ();
   return obj;
 }
 template <typename Type>
 static inline bool hb_object_destroy (Type *obj)
 {
   hb_object_trace (obj, HB_FUNC);
   return obj->header.destroy ();
 }
 template <typename Type>
 static inline bool hb_object_set_user_data (Type               *obj,
 					    hb_user_data_key_t *key,
 					    void *              data,
 					    hb_destroy_func_t   destroy,
 					    hb_bool_t           replace)
 {
   return obj->header.set_user_data (key, data, destroy, replace);
 }
 template <typename Type>
 static inline void *hb_object_get_user_data (Type               *obj,
 					     hb_user_data_key_t *key)
 {
   return obj->header.get_user_data (key);
 }
 #endif /* HB_OBJECT_PRIVATE_HH */

The Tor Browser / annotate

gfx/harfbuzz/src/hb-object-private.hh@6474c204b198 (annotated)

gfx/harfbuzz/src/hb-object-private.hh