diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/hb-mutex.hh')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-mutex.hh | 45 |
1 files changed, 24 insertions, 21 deletions
diff --git a/thirdparty/harfbuzz/src/hb-mutex.hh b/thirdparty/harfbuzz/src/hb-mutex.hh index 2fc8d7ee58..6914b22450 100644 --- a/thirdparty/harfbuzz/src/hb-mutex.hh +++ b/thirdparty/harfbuzz/src/hb-mutex.hh @@ -39,8 +39,7 @@ /* We need external help for these */ -#if defined(HB_MUTEX_IMPL_INIT) \ - && defined(hb_mutex_impl_init) \ +#if defined(hb_mutex_impl_init) \ && defined(hb_mutex_impl_lock) \ && defined(hb_mutex_impl_unlock) \ && defined(hb_mutex_impl_finish) @@ -48,21 +47,19 @@ /* Defined externally, i.e. in config.h; must have typedef'ed hb_mutex_impl_t as well. */ -#elif !defined(HB_NO_MT) && (defined(HAVE_PTHREAD) || defined(__APPLE__)) +#elif !defined(HB_NO_MT) && !defined(HB_MUTEX_IMPL_STD_MUTEX) && (defined(HAVE_PTHREAD) || defined(__APPLE__)) #include <pthread.h> typedef pthread_mutex_t hb_mutex_impl_t; -#define HB_MUTEX_IMPL_INIT PTHREAD_MUTEX_INITIALIZER #define hb_mutex_impl_init(M) pthread_mutex_init (M, nullptr) #define hb_mutex_impl_lock(M) pthread_mutex_lock (M) #define hb_mutex_impl_unlock(M) pthread_mutex_unlock (M) #define hb_mutex_impl_finish(M) pthread_mutex_destroy (M) -#elif !defined(HB_NO_MT) && defined(_WIN32) +#elif !defined(HB_NO_MT) && !defined(HB_MUTEX_IMPL_STD_MUTEX) && defined(_WIN32) typedef CRITICAL_SECTION hb_mutex_impl_t; -#define HB_MUTEX_IMPL_INIT {0} #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) #define hb_mutex_impl_init(M) InitializeCriticalSectionEx (M, 0, 0) #else @@ -73,34 +70,40 @@ typedef CRITICAL_SECTION hb_mutex_impl_t; #define hb_mutex_impl_finish(M) DeleteCriticalSection (M) -#elif defined(HB_NO_MT) +#elif !defined(HB_NO_MT) + +#include <mutex> +typedef std::mutex hb_mutex_impl_t; +#define hb_mutex_impl_init(M) HB_STMT_START { new (M) hb_mutex_impl_t; } HB_STMT_END +#define hb_mutex_impl_lock(M) (M)->lock () +#define hb_mutex_impl_unlock(M) (M)->unlock () +#define hb_mutex_impl_finish(M) HB_STMT_START { (M)->~hb_mutex_impl_t(); } HB_STMT_END + + +#else /* defined(HB_NO_MT) */ typedef int hb_mutex_impl_t; -#define HB_MUTEX_IMPL_INIT 0 #define hb_mutex_impl_init(M) HB_STMT_START {} HB_STMT_END #define hb_mutex_impl_lock(M) HB_STMT_START {} HB_STMT_END #define hb_mutex_impl_unlock(M) HB_STMT_START {} HB_STMT_END #define hb_mutex_impl_finish(M) HB_STMT_START {} HB_STMT_END -#else - -#error "Could not find any system to define mutex macros." -#error "Check hb-mutex.hh for possible resolutions." - #endif -#define HB_MUTEX_INIT {HB_MUTEX_IMPL_INIT} - struct hb_mutex_t { - hb_mutex_impl_t m; - - void init () { hb_mutex_impl_init (&m); } - void lock () { hb_mutex_impl_lock (&m); } - void unlock () { hb_mutex_impl_unlock (&m); } - void fini () { hb_mutex_impl_finish (&m); } + /* Create space for, but do not initialize m. */ + alignas(hb_mutex_impl_t) char m[sizeof (hb_mutex_impl_t)]; + +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-align" + void init () { hb_mutex_impl_init ((hb_mutex_impl_t *) m); } + void lock () { hb_mutex_impl_lock ((hb_mutex_impl_t *) m); } + void unlock () { hb_mutex_impl_unlock ((hb_mutex_impl_t *) m); } + void fini () { hb_mutex_impl_finish ((hb_mutex_impl_t *) m); } +#pragma GCC diagnostic pop }; struct hb_lock_t |