1 files changed, 83 insertions, 0 deletions
diff --git a/core/ephermal_checkpoint.hpp b/core/ephermal_checkpoint.hpp
new file mode 100644
index 0000000..1ca59e4
--- /dev/null
+++ b/core/ephermal_checkpoint.hpp
@@ -0,0 +1,83 @@
+// like Checkpoint, but memory-backed instead of file-backed and only
+// storing the last time/value-paiir -> NO ACTUAL CHECKPOINTS
+#ifndef kR1Z42gIzRShmbO3sKvSk0HIEo
+#define kR1Z42gIzRShmbO3sKvSk0HIEo
+
+#include <boost/static_assert.hpp>
+
+#include "array.hpp"
+#include "string_helpers.hpp"
+#include "simlimits.hpp"
+#include "template_helpers.hpp"
+#include "time.hpp"
+
+template<typename T, uint32_t size>
+class EphermalCheckpoint {
+public:
+  typedef uint32_t ptr_t;
+
+  EphermalCheckpoint(string name, const T initialValue);
+
+  // read access
+  inline Time getTime (const Time t, const ptr_t i);
+  inline T    getValue(const Time t, const ptr_t i);
+  inline Time getTime (const Time t); // only with size == 1
+  inline T    getValue(const Time t); // only with size == 1
+
+  // write access
+  inline void set(const Time t, const ptr_t i, const T val);
+  inline void set(const Time t, const T val); // only with size == 1
+
+  void sync() const {};
+
+  // memory backed data; they store for each element the ...
+  Array<T, size> content;  // ... last known content
+  Array<Time, size> times; // ... associated time
+
+private:
+  EphermalCheckpoint();
+};
+
+template<typename T, uint32_t size>
+inline void EphermalCheckpoint<T, size>::set(const Time t, const ptr_t i, const T val) {
+  times.set(i, t);
+  content.set(i, val);
+}
+
+template<typename T, uint32_t size>
+inline void EphermalCheckpoint<T, size>::set(const Time t, const T val) {
+  BOOST_STATIC_ASSERT(size == 1);
+  setValue(t, 0, val);
+}
+
+template<typename T, uint32_t size>
+inline Time EphermalCheckpoint<T, size>::getTime(const Time t, const ptr_t i) {
+  return times.get(i);
+}
+
+template<typename T, uint32_t size>
+inline Time EphermalCheckpoint<T, size>::getTime(const Time t) {
+  BOOST_STATIC_ASSERT(size == 1);
+  return getTime(t, 0);
+}
+
+template<typename T, uint32_t size>
+inline T EphermalCheckpoint<T, size>::getValue(const Time t, const ptr_t i) {
+  return content.get(i);
+}
+
+template<typename T, uint32_t size>
+inline T EphermalCheckpoint<T, size>::getValue(const Time t) {
+  BOOST_STATIC_ASSERT(size == 1);
+  return getValue(t, 0);
+}
+
+template<typename T, uint32_t size>
+EphermalCheckpoint<T, size>::EphermalCheckpoint(string name, const T initialValue) {
+  for (ptr_t i=0; i<size; i++) {
+    content.set(i, initialValue);
+    times.set(i, 0);
+  }
+}
+
+#endif // kR1Z42gIzRShmbO3sKvSk0HIEo