SimX timing simulation

sim/simX/ibuffer.h

@@ -0,0 +1,39 @@
+#pragma once
+
+#include "pipeline.h"
+#include <queue>
+
+namespace vortex {
+
+class IBuffer {
+private:
+    std::queue<pipeline_state_t> entries_;
+    uint32_t capacity_;
+
+public:    
+    IBuffer(uint32_t size) 
+        : capacity_(size)
+    {}
+
+    bool empty() const {
+        return entries_.empty();
+    }
+    
+    bool full() const {
+        return (entries_.size() == capacity_);
+    }
+
+    const pipeline_state_t& top() const {
+        return entries_.front();
+    }
+
+    void push(const pipeline_state_t& state) {
+        entries_.emplace(state);
+    }
+
+    void pop() {
+        return entries_.pop();
+    }
+};
+
+}