Implement vm startup and shutdown

1 files changed, 24 insertions, 0 deletions

diff --git a/bbot/utility.cxx b/bbot/utility.cxx
index 591ff52..95c31e9 100644
--- a/bbot/utility.cxx
+++ b/bbot/utility.cxx
@@ -4,6 +4,9 @@
 
 #include <bbot/utility>
 
+#include <chrono>
+#include <cstdlib> // rand_r()
+
 #include <bbot/diagnostics>
 
 using namespace std;
@@ -11,4 +14,25 @@ using namespace butl;
 
 namespace bbot
 {
+  static unsigned int rand_seed; // Seed for rand_r();
+
+  size_t
+  genrand ()
+  {
+    if (rand_seed == 0)
+      rand_seed = static_cast<unsigned int> (
+        chrono::system_clock::now ().time_since_epoch ().count ());
+
+    return static_cast<size_t> (rand_r (&rand_seed));
+  }
+
+  void
+  run_trace (tracer& t, const char* cmd[], size_t n)
+  {
+    if (verb >= 2)
+    {
+      diag_record dr (t);
+      process::print (dr.os, cmd, n);
+    }
+  }
 }