darling-libobjc2/visibility.h

#if defined _WIN32 || defined __CYGWIN__
#	define PUBLIC __attribute__((dllexport))
#	define PRIVATE
#else
#	define PUBLIC __attribute__ ((visibility("default")))
#	define PRIVATE  __attribute__ ((visibility("hidden")))
#endif
#ifdef NO_LEGACY
#	define LEGACY PRIVATE
#else
#	define LEGACY PUBLIC
#endif

#if defined(DEBUG) || (!defined(__clang__))
#	include <assert.h>
#	define UNREACHABLE(x) assert(0 && x)
#	define ASSERT(x) assert(x)
#else
#	define UNREACHABLE(x) __builtin_unreachable()
#	define ASSERT(x) do { if (x) __builtin_unreachable(); } while(0)
#endif

#define LIKELY(x) __builtin_expect(x, 1)
#define UNLIKELY(x) __builtin_expect(x, 0)
Add visibility attributes on all internal functions so that we aren't ever exporting them outside of libobjc. 2011-04-14 12:25:17 +00:00			`#if defined _WIN32 \|\| defined __CYGWIN__`
			`# define PUBLIC __attribute__((dllexport))`
			`# define PRIVATE`
			`#else`
			`# define PUBLIC __attribute__ ((visibility("default")))`
			`# define PRIVATE __attribute__ ((visibility("hidden")))`
			`#endif`
More cleanups. Stop using __ identifiers for internal stuff now that it's properly marked private and we don't have to worry about conflicts. 2011-04-14 16:44:34 +00:00			`#ifdef NO_LEGACY`
			`# define LEGACY PRIVATE`
			`#else`
			`# define LEGACY PUBLIC`
			`#endif`
Add visibility attributes on all internal functions so that we aren't ever exporting them outside of libobjc. 2011-04-14 12:25:17 +00:00
First pass at implementing Apple-compatible GC using Boehm. Still needs some tidying, but the following work: - __strong pointers, preventing objects from being freed _ __weak pointers are automatically freed when the last remaining __strong pointer goes away - objc_gc_{retain,release}_np() functions, which can be used to implement CFRetain() and CFRelease() (adds an reference count - the object will not be collected until after its last retain is gone. 2011-05-22 23:02:04 +00:00			`#if defined(DEBUG) \|\| (!defined(__clang__))`
			`# include <assert.h>`
			`# define UNREACHABLE(x) assert(0 && x)`
			`# define ASSERT(x) assert(x)`
			`#else`
			`# define UNREACHABLE(x) __builtin_unreachable()`
			`# define ASSERT(x) do { if (x) __builtin_unreachable(); } while(0)`
			`#endif`

			`#define LIKELY(x) __builtin_expect(x, 1)`
			`#define UNLIKELY(x) __builtin_expect(x, 0)`