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#ifndef AL_THREADS_H
#define AL_THREADS_H
#if defined(__GNUC__) && defined(__i386__)
/* force_align_arg_pointer is required for proper function arguments aligning
* when SSE code is used. Some systems (Windows, QNX) do not guarantee our
* thread functions will be properly aligned on the stack, even though GCC may
* generate code with the assumption that it is. */
#define FORCE_ALIGN __attribute__((force_align_arg_pointer))
#else
#define FORCE_ALIGN
#endif
#if defined(__APPLE__)
#include <dispatch/dispatch.h>
#elif !defined(_WIN32)
#include <semaphore.h>
#endif
void althrd_setname(const char *name);
namespace al {
class semaphore {
#ifdef _WIN32
using native_type = void*;
#elif defined(__APPLE__)
using native_type = dispatch_semaphore_t;
#else
using native_type = sem_t;
#endif
native_type mSem;
public:
semaphore(unsigned int initial=0);
semaphore(const semaphore&) = delete;
~semaphore();
semaphore& operator=(const semaphore&) = delete;
void post();
void wait() noexcept;
bool try_wait() noexcept;
};
} // namespace al
#endif /* AL_THREADS_H */
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