mirror of https://github.com/axmolengine/axmol.git
44 lines
967 B
C
44 lines
967 B
C
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#ifndef COMMON_ALSEM_H
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#define COMMON_ALSEM_H
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#if defined(__APPLE__)
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#include <AvailabilityMacros.h>
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#include <TargetConditionals.h>
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#if (((MAC_OS_X_VERSION_MIN_REQUIRED > 1050) && !defined(__ppc__)) || TARGET_OS_IOS || TARGET_OS_TV)
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#include <dispatch/dispatch.h>
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#define AL_APPLE_HAVE_DISPATCH 1
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#else
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#include <semaphore.h> /* Fallback option for Apple without a working libdispatch */
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#endif
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#elif !defined(_WIN32)
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#include <semaphore.h>
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#endif
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namespace al {
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class semaphore {
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#ifdef _WIN32
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using native_type = void*;
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#elif defined(AL_APPLE_HAVE_DISPATCH)
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using native_type = dispatch_semaphore_t;
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#else
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using native_type = sem_t;
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#endif
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native_type mSem;
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public:
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semaphore(unsigned int initial=0);
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semaphore(const semaphore&) = delete;
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~semaphore();
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semaphore& operator=(const semaphore&) = delete;
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void post();
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void wait() noexcept;
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bool try_wait() noexcept;
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};
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} // namespace al
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#endif /* COMMON_ALSEM_H */
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