d840165a32
- `etc` module was renamed to `etcpak` and modified to use the new library. - PKM importer is removed in the process, it's obsolete. - Old library `etc2comp` is removed. - S3TC compression no longer done via `squish` (but decompression still is). - Slight modifications to etcpak sources for MinGW compatibility, to fix LLVM `-Wc++11-narrowing` errors, and to allow using vendored or system libpng. Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>
47 lines
830 B
C++
47 lines
830 B
C++
#ifndef __DARKRL__SEMAPHORE_HPP__
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#define __DARKRL__SEMAPHORE_HPP__
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#include <condition_variable>
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#include <mutex>
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class Semaphore
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{
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public:
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Semaphore( int count ) : m_count( count ) {}
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void lock()
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{
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std::unique_lock<std::mutex> lock( m_mutex );
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m_cv.wait( lock, [this](){ return m_count != 0; } );
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m_count--;
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}
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void unlock()
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{
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std::lock_guard<std::mutex> lock( m_mutex );
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m_count++;
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m_cv.notify_one();
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}
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bool try_lock()
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{
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std::lock_guard<std::mutex> lock( m_mutex );
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if( m_count == 0 )
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{
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return false;
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}
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else
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{
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m_count--;
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return true;
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}
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}
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private:
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std::mutex m_mutex;
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std::condition_variable m_cv;
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unsigned int m_count;
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};
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#endif
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