citra: Migrate to tracy profiler from Microprofile

externals/tracy/public/client/TracyFastVector.hpp

@@ -0,0 +1,118 @@
+#ifndef __TRACYFASTVECTOR_HPP__
+#define __TRACYFASTVECTOR_HPP__
+
+#include <assert.h>
+#include <stddef.h>
+
+#include "../common/TracyAlloc.hpp"
+#include "../common/TracyForceInline.hpp"
+
+namespace tracy
+{
+
+template<typename T>
+class FastVector
+{
+public:
+    using iterator = T*;
+    using const_iterator = const T*;
+
+    FastVector( size_t capacity )
+        : m_ptr( (T*)tracy_malloc( sizeof( T ) * capacity ) )
+        , m_write( m_ptr )
+        , m_end( m_ptr + capacity )
+    {
+        assert( capacity != 0 );
+    }
+
+    FastVector( const FastVector& ) = delete;
+    FastVector( FastVector&& ) = delete;
+
+    ~FastVector()
+    {
+        tracy_free( m_ptr );
+    }
+
+    FastVector& operator=( const FastVector& ) = delete;
+    FastVector& operator=( FastVector&& ) = delete;
+
+    bool empty() const { return m_ptr == m_write; }
+    size_t size() const { return m_write - m_ptr; }
+
+    T* data() { return m_ptr; }
+    const T* data() const { return m_ptr; };
+
+    T* begin() { return m_ptr; }
+    const T* begin() const { return m_ptr; }
+    T* end() { return m_write; }
+    const T* end() const { return m_write; }
+
+    T& front() { assert( !empty() ); return m_ptr[0]; }
+    const T& front() const { assert( !empty() ); return m_ptr[0]; }
+
+    T& back() { assert( !empty() ); return m_write[-1]; }
+    const T& back() const { assert( !empty() ); return m_write[-1]; }
+
+    T& operator[]( size_t idx ) { return m_ptr[idx]; }
+    const T& operator[]( size_t idx ) const { return m_ptr[idx]; }
+
+    T* push_next()
+    {
+        if( m_write == m_end ) AllocMore();
+        return m_write++;
+    }
+
+    T* prepare_next()
+    {
+        if( m_write == m_end ) AllocMore();
+        return m_write;
+    }
+
+    void commit_next()
+    {
+        m_write++;
+    }
+
+    void clear()
+    {
+        m_write = m_ptr;
+    }
+
+    void swap( FastVector& vec )
+    {
+        const auto ptr1 = m_ptr;
+        const auto ptr2 = vec.m_ptr;
+        const auto write1 = m_write;
+        const auto write2 = vec.m_write;
+        const auto end1 = m_end;
+        const auto end2 = vec.m_end;
+
+        m_ptr = ptr2;
+        vec.m_ptr = ptr1;
+        m_write = write2;
+        vec.m_write = write1;
+        m_end = end2;
+        vec.m_end = end1;
+    }
+
+private:
+    tracy_no_inline void AllocMore()
+    {
+        const auto cap = size_t( m_end - m_ptr ) * 2;
+        const auto size = size_t( m_write - m_ptr );
+        T* ptr = (T*)tracy_malloc( sizeof( T ) * cap );
+        memcpy( ptr, m_ptr, size * sizeof( T ) );
+        tracy_free_fast( m_ptr );
+        m_ptr = ptr;
+        m_write = m_ptr + size;
+        m_end = m_ptr + cap;
+    }
+
+    T* m_ptr;
+    T* m_write;
+    T* m_end;
+};
+
+}
+
+#endif