Update harfbuzz-ng to 1a5a91dc0d8bf4b72a2f22dc6300b06ad7000b79.

third_party/harfbuzz-ng/src/hb-mutex-private.hh

+/*
+ * Copyright © 2007  Chris Wilson
+ * Copyright © 2009,2010  Red Hat, Inc.
+ * Copyright © 2011  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_MUTEX_PRIVATE_HH
+#define HB_MUTEX_PRIVATE_HH
+
+#include "hb-private.hh"
+
+
+
+/* mutex */
+
+/* We need external help for these */
+
+#ifdef HAVE_GLIB
+
+#include <glib.h>
+
+typedef GStaticMutex hb_mutex_impl_t;
+#define HB_MUTEX_IMPL_INIT      G_STATIC_MUTEX_INIT
+#define hb_mutex_impl_init(M)   g_static_mutex_init (M)
+#define hb_mutex_impl_lock(M)   g_static_mutex_lock (M)
+#define hb_mutex_impl_unlock(M) g_static_mutex_unlock (M)
+#define hb_mutex_impl_free(M)   g_static_mutex_free (M)
+
+
+#elif defined(_MSC_VER) || defined(__MINGW32__)
+
+#include <windows.h>
+
+typedef CRITICAL_SECTION hb_mutex_impl_t;
+#define HB_MUTEX_IMPL_INIT      { NULL, 0, 0, NULL, NULL, 0 }
+#define hb_mutex_impl_init(M)   InitializeCriticalSection (M)
+#define hb_mutex_impl_lock(M)   EnterCriticalSection (M)
+#define hb_mutex_impl_unlock(M) LeaveCriticalSection (M)
+#define hb_mutex_impl_free(M)   DeleteCriticalSection (M)
+
+
+#else
+
+#warning "Could not find any system to define platform macros, library will NOT be thread-safe"
+
+typedef volatile int hb_mutex_impl_t;
+#define HB_MUTEX_IMPL_INIT      0
+#define hb_mutex_impl_init(M)   ((void) (*(M) = 0))
+#define hb_mutex_impl_lock(M)   ((void) (*(M) = 1))
+#define hb_mutex_impl_unlock(M) ((void) (*(M) = 0))
+#define hb_mutex_impl_free(M)   ((void) (*(M) = 2))
+
+
+#endif
+
+
+struct hb_mutex_t
+{
+  hb_mutex_impl_t m;
+
+  inline void init   (void) { hb_mutex_impl_init   (&m); }
+  inline void lock   (void) { hb_mutex_impl_lock   (&m); }
+  inline void unlock (void) { hb_mutex_impl_unlock (&m); }
+  inline void free   (void) { hb_mutex_impl_free   (&m); }
+};
+
+#define HB_MUTEX_INIT           {HB_MUTEX_IMPL_INIT}
+#define hb_mutex_init(M)        (M)->init ()
+#define hb_mutex_lock(M)        (M)->lock ()
+#define hb_mutex_unlock(M)      (M)->unlock ()
+#define hb_mutex_free(M)        (M)->free ()
+
+
+struct hb_static_mutex_t : hb_mutex_t
+{
+  hb_static_mutex_t (void)  { this->init (); }
+  ~hb_static_mutex_t (void) { this->free (); }
+
+  private:
+  NO_COPY (hb_static_mutex_t);
+};
+
+
+
+#endif /* HB_MUTEX_PRIVATE_HH */