I use clang 12 to build some cpp project that needs semaphore.acquire() function.
System version: MacOs Big Sur 12.0
However, Compiler shows that some function is unavailable.
Detail messages:
/concurrencpp/source/executors/worker_thread_executor.cpp:42:21: error: 'acquire' is unavailable
[build] m_semaphore.acquire();
[build] ^
[build] /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/semaphore:202:10: note: 'acquire' has been explicitly marked unavailable here
[build] void acquire()
[build] ^
[build] /Users/mirocos/master/study/concurrencpp/source/executors/worker_thread_executor.cpp:106:21: error: 'release' is unavailable
[build] m_semaphore.release();
[build] ^
[build] /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/semaphore:197:10: note: 'release' has been explicitly marked unavailable here
[build] void release(ptrdiff_t __update = 1)
[build] ^
[build] /Users/mirocos/master/study/concurrencpp/source/executors/worker_thread_executor.cpp:121:21: error: 'release' is unavailable
[build] m_semaphore.release();
[build] ^
[build] /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/semaphore:197:10: note: 'release' has been explicitly marked unavailable here
[build] void release(ptrdiff_t __update = 1)
[build] ^
[build] /Users/mirocos/master/study/concurrencpp/source/executors/worker_thread_executor.cpp:160:17: error: 'release' is unavailable
[build] m_semaphore.release();
[build] ^
[build] /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/semaphore:197:10: note: 'release' has been explicitly marked unavailable here
[build] void release(ptrdiff_t __update = 1)
[build] ^
[build] /Users/mirocos/master/study/concurrencpp/source/executors/thread_pool_executor.cpp:218:26: error: 'try_acquire_until' is unavailable
[build] if (!m_semaphore.try_acquire_until(deadline)) {
[build] ^
[build] /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/semaphore:219:10: note: 'try_acquire_until' has been explicitly marked unavailable here
[build] bool try_acquire_until(chrono::time_point<Clock, Duration> const& __abs_time)
[build] ^
[build] /Users/mirocos/master/study/concurrencpp/source/executors/thread_pool_executor.cpp:218:26: error: 'try_acquire_until<std::__1::chrono::steady_clock, std::__1::chrono::duration<long long, std::__1::ratio<1, 1000000000>>>' is unavailable
[build] if (!m_semaphore.try_acquire_until(deadline)) {
[build] ^
[build] /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/semaphore:219:10: note: 'try_acquire_until<std::__1::chrono::steady_clock, std::__1::chrono::duration<long long, std::__1::ratio<1, 1000000000>>>' has been explicitly marked unavailable here
[build] bool try_acquire_until(chrono::time_point<Clock, Duration> const& __abs_time)
[build] ^
[build] /Users/mirocos/master/study/concurrencpp/source/executors/thread_pool_executor.cpp:322:25: error: 'release' is unavailable
[build] m_semaphore.release();
[build] ^
[build] /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/semaphore:197:10: note: 'release' has been explicitly marked unavailable here
[build] void release(ptrdiff_t __update = 1)
[build] ^
[build] /Users/mirocos/master/study/concurrencpp/source/executors/thread_pool_executor.cpp:420:17: error: 'release' is unavailable
[build] m_semaphore.release();
[build] ^
[build] /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/semaphore:197:10: note: 'release' has been explicitly marked unavailable here
[build] void release(ptrdiff_t __update = 1)
[build] ^
[build] 4 errors generated.
can anyone could help me with it?
