Add ComputeBudget tuner (#12476)

programs/bpf/c/src/sanity++/sanity++.cc

@@ -0,0 +1,27 @@
+/**
+ * @brief Example C++-based BPF program that prints out the parameters
+ * passed to it
+ */
+#include <solana_sdk.h>
+
+/**
+ * Custom error for when input serialization fails
+ */
+#define INVALID_INPUT 1
+
+extern uint64_t entrypoint(const uint8_t *input) {
+  SolAccountInfo ka[1];
+  SolParameters params = (SolParameters) { .ka = ka };
+
+  sol_log(__FILE__);
+
+  if (!sol_deserialize(input, &params, SOL_ARRAY_SIZE(ka))) {
+    return ERROR_INVALID_ARGUMENT;
+  }
+
+  // Log the provided input parameters.  In the case of  the no-op
+  // program, no account keys or input data are expected but real
+  // programs will have specific requirements so they can do their work.
+  sol_log_params(&params);
+  return SUCCESS;
+}

programs/bpf/c/src/tuner/tuner.c

@@ -0,0 +1,23 @@
+/**
+ * @brief Compute budget tuner program.  Spins in a loop consuming the entire
+ * budget, used by the tuner bench test to tune the compute budget costs.
+ *
+ * Care should be taken because the compiler might optimize out the mechanism
+ * you are trying to tune.
+ */
+
+#include <solana_sdk.h>
+
+extern uint64_t entrypoint(const uint8_t *input) {
+  uint8_t *val = (uint8_t *)input;
+  for (uint64_t i = 0; i < UINT64_MAX; i++) {
+
+    // Uncomment for raw compute
+    {
+      if (*val != 0) {
+        *val = *val + 1;
+      }
+    }
+  }
+  return *val;
+}