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gthr_libobjc: Copy type definitions
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@lhmouse
lhmouse committed Nov 27, 2024
1 parent fa9bedc commit b4b68ea
Showing 1 changed file with 50 additions and 44 deletions.
94 changes: 50 additions & 44 deletions mcfgthread/gthr_libobjc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -10,8 +10,28 @@

#include "fwd.h"
#include "gthr_aux.h"

#ifdef _LIBOBJC
# include <objc/thr.h>
#else
/* These are copied from <objc/thr.h> which seems a public header. These
* types have not been updated for more than a decade, so might be stable
* after all. */
typedef void* objc_thread_t;
typedef struct objc_mutex* objc_mutex_t;
typedef struct objc_condition* objc_condition_t;

struct objc_mutex
{
volatile objc_thread_t owner;
volatile int depth;
void* backend;
};

struct objc_condition
{
void* backend;
};
#endif

__MCF_CXX(extern "C" {)
Expand All @@ -20,9 +40,6 @@ __MCF_CXX(extern "C" {)
# define __MCF_GTHR_LIBOBJC_INLINE __MCF_GNU_INLINE
#endif

/* Copy this declaration from GCC libobjc here. */
typedef void* objc_thread_t;

/* Initialize the threads subsystem. */
__MCF_GTHR_LIBOBJC_IMPORT
int
Expand All @@ -43,13 +60,8 @@ __MCF_FNA(__MCF_gthr_objc_close_thread_system, __gthread_objc_close_thread_syste
# define __MCF_gthr_objc_close_thread_system __gthread_objc_close_thread_system
#endif

/* Below are functions that depend on libobjc types and are thus
* provided static inline only. Nevertheless, it is still possible to
* compile these functions by defining `_LIBOBJC`. */
#ifdef _LIBOBJC

/* Allocate a mutex. */
__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_IMPORT
int
__MCF_gthr_objc_mutex_allocate(objc_mutex_t __objc_mtx) __MCF_noexcept;

Expand All @@ -59,7 +71,7 @@ __MCF_FNA(__MCF_gthr_objc_mutex_allocate, __gthread_objc_mutex_allocate);
#endif

/* Deallocate a mutex. */
__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_IMPORT
int
__MCF_gthr_objc_mutex_deallocate(objc_mutex_t __objc_mtx) __MCF_noexcept;

Expand All @@ -69,7 +81,7 @@ __MCF_FNA(__MCF_gthr_objc_mutex_deallocate, __gthread_objc_mutex_deallocate);
#endif

/* Grab a lock on a mutex. */
__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_IMPORT
int
__MCF_gthr_objc_mutex_lock(objc_mutex_t __objc_mtx) __MCF_noexcept;

Expand All @@ -79,7 +91,7 @@ __MCF_FNA(__MCF_gthr_objc_mutex_lock, __gthread_objc_mutex_lock);
#endif

/* Try to grab a lock on a mutex. */
__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_IMPORT
int
__MCF_gthr_objc_mutex_trylock(objc_mutex_t __objc_mtx) __MCF_noexcept;

Expand All @@ -89,7 +101,7 @@ __MCF_FNA(__MCF_gthr_objc_mutex_trylock, __gthread_objc_mutex_trylock);
#endif

/* Unlock the mutex. */
__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_IMPORT
int
__MCF_gthr_objc_mutex_unlock(objc_mutex_t __objc_mtx) __MCF_noexcept;

Expand All @@ -99,7 +111,7 @@ __MCF_FNA(__MCF_gthr_objc_mutex_unlock, __gthread_objc_mutex_unlock);
#endif

/* Allocate a condition. */
__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_IMPORT
int
__MCF_gthr_objc_condition_allocate(objc_condition_t __objc_cnd) __MCF_noexcept;

Expand All @@ -109,7 +121,7 @@ __MCF_FNA(__MCF_gthr_objc_condition_allocate, __gthread_objc_condition_allocate)
#endif

/* Deallocate a condition. */
__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_IMPORT
int
__MCF_gthr_objc_condition_deallocate(objc_condition_t __objc_cnd) __MCF_noexcept;

Expand All @@ -119,7 +131,7 @@ __MCF_FNA(__MCF_gthr_objc_condition_deallocate, __gthread_objc_condition_dealloc
#endif

/* Wait on the condition. */
__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_IMPORT
int
__MCF_gthr_objc_condition_wait(objc_condition_t __objc_cnd, objc_mutex_t __objc_mtx) __MCF_noexcept;

Expand All @@ -129,7 +141,7 @@ __MCF_FNA(__MCF_gthr_objc_condition_wait, __gthread_objc_condition_wait);
#endif

/* Wake up one thread waiting on this condition. */
__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_IMPORT
int
__MCF_gthr_objc_condition_signal(objc_condition_t __objc_cnd) __MCF_noexcept;

Expand All @@ -139,7 +151,7 @@ __MCF_FNA(__MCF_gthr_objc_condition_signal, __gthread_objc_condition_signal);
#endif

/* Wake up all threads waiting on this condition. */
__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_IMPORT
int
__MCF_gthr_objc_condition_broadcast(objc_condition_t __objc_cnd) __MCF_noexcept;

Expand All @@ -148,8 +160,6 @@ __MCF_FNA(__MCF_gthr_objc_condition_broadcast, __gthread_objc_condition_broadcas
# define __MCF_gthr_objc_condition_broadcast __gthread_objc_condition_broadcast
#endif

#endif /* _LIBOBJC */

/* Create a new thread of execution.
* This function creates a detached thread. */
__MCF_GTHR_LIBOBJC_IMPORT
Expand Down Expand Up @@ -250,18 +260,16 @@ __MCF_gthr_objc_close_thread_system(void) __MCF_noexcept
return 0;
}

#ifdef _LIBOBJC

__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_INLINE
int
__MCF_gthr_objc_mutex_allocate(objc_mutex_t __objc_mtx) __MCF_noexcept
{
_MCF_mutex* __mtx = (_MCF_mutex*)(void*) &(__objc_mtx->backend);
_MCF_mutex* __mtx = __MCF_CAST_PTR(_MCF_mutex, &(__objc_mtx->backend));
_MCF_mutex_init(__mtx);
return 0;
}

__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_INLINE
int
__MCF_gthr_objc_mutex_deallocate(objc_mutex_t __objc_mtx) __MCF_noexcept
{
Expand All @@ -271,83 +279,81 @@ __MCF_gthr_objc_mutex_deallocate(objc_mutex_t __objc_mtx) __MCF_noexcept
return 0;
}

__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_INLINE
int
__MCF_gthr_objc_mutex_lock(objc_mutex_t __objc_mtx) __MCF_noexcept
{
_MCF_mutex* __mtx = (_MCF_mutex*)(void*) &(__objc_mtx->backend);
_MCF_mutex* __mtx = __MCF_CAST_PTR(_MCF_mutex, &(__objc_mtx->backend));
int __err = _MCF_mutex_lock(__mtx, __MCF_nullptr);
__MCF_ASSERT(__err == 0);
return 0;
}

__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_INLINE
int
__MCF_gthr_objc_mutex_trylock(objc_mutex_t __objc_mtx) __MCF_noexcept
{
_MCF_mutex* __mtx = (_MCF_mutex*)(void*) &(__objc_mtx->backend);
_MCF_mutex* __mtx = __MCF_CAST_PTR(_MCF_mutex, &(__objc_mtx->backend));
int64_t __timeout = 0;
int __err = _MCF_mutex_lock(__mtx, &__timeout);
return __err;
}

__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_INLINE
int
__MCF_gthr_objc_mutex_unlock(objc_mutex_t __objc_mtx) __MCF_noexcept
{
_MCF_mutex* __mtx = (_MCF_mutex*)(void*) &(__objc_mtx->backend);
_MCF_mutex* __mtx = __MCF_CAST_PTR(_MCF_mutex, &(__objc_mtx->backend));
_MCF_mutex_unlock(__mtx);
return 0;
}

__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_INLINE
int
__MCF_gthr_objc_condition_allocate(objc_condition_t __objc_cnd) __MCF_noexcept
{
_MCF_cond* __cond = (_MCF_cond*)(void*) &(__objc_cnd->backend);
_MCF_cond* __cond = __MCF_CAST_PTR(_MCF_cond, &(__objc_cnd->backend));
_MCF_cond_init(__cond);
return 0;
}

__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_INLINE
int
__MCF_gthr_objc_condition_deallocate(objc_condition_t __objc_cnd) __MCF_noexcept
{
(void) __objc_cnd;
return 0;
}

__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_INLINE
int
__MCF_gthr_objc_condition_wait(objc_condition_t __objc_cnd, objc_mutex_t __objc_mtx) __MCF_noexcept
{
_MCF_cond* __cond = (_MCF_cond*)(void*) &(__objc_cnd->backend);
_MCF_mutex* __mtx = (_MCF_mutex*)(void*) &(__objc_mtx->backend);
_MCF_cond* __cond = __MCF_CAST_PTR(_MCF_cond, &(__objc_cnd->backend));
_MCF_mutex* __mtx = __MCF_CAST_PTR(_MCF_mutex, &(__objc_mtx->backend));
int __err = __MCF_gthr_cond_mutex_wait(__cond, __mtx, __MCF_nullptr);
__MCF_ASSERT(__err == 0);
return 0;
}

__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_INLINE
int
__MCF_gthr_objc_condition_signal(objc_condition_t __objc_cnd) __MCF_noexcept
{
_MCF_cond* __cond = (_MCF_cond*)(void*) &(__objc_cnd->backend);
_MCF_cond* __cond = __MCF_CAST_PTR(_MCF_cond, &(__objc_cnd->backend));
_MCF_cond_signal(__cond);
return 0;
}

__MCF_ALWAYS_INLINE
__MCF_GTHR_LIBOBJC_INLINE
int
__MCF_gthr_objc_condition_broadcast(objc_condition_t __objc_cnd) __MCF_noexcept
{
_MCF_cond* __cond = (_MCF_cond*)(void*) &(__objc_cnd->backend);
_MCF_cond* __cond = __MCF_CAST_PTR(_MCF_cond, &(__objc_cnd->backend));
_MCF_cond_signal_all(__cond);
return 0;
}

#endif /* _LIBOBJC */

__MCF_GTHR_LIBOBJC_INLINE
objc_thread_t
__MCF_gthr_objc_thread_detach(__MCF_gthr_thread_procedure* __proc, void* __arg) __MCF_noexcept
Expand Down Expand Up @@ -402,7 +408,7 @@ __MCF_gthr_objc_thread_id(void) __MCF_noexcept
return (objc_thread_t)(uintptr_t) _MCF_thread_self_tid();
}

__MCF_GTHR_LIBOBJC_INLINE __MCF_FN_PURE
__MCF_GTHR_LIBOBJC_INLINE
void*
__MCF_gthr_objc_thread_get_data(void) __MCF_noexcept
{
Expand Down

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