From df5e58e6e5eb2727a185bf9a98a462c18fa3a83d Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 8 Mar 2018 18:06:26 +0200
Subject: Setup project database infrastructure

---
 bdep/diagnostics.hxx | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

(limited to 'bdep/diagnostics.hxx')

diff --git a/bdep/diagnostics.hxx b/bdep/diagnostics.hxx
index 366b6c0..9a233f0 100644
--- a/bdep/diagnostics.hxx
+++ b/bdep/diagnostics.hxx
@@ -5,6 +5,8 @@
 #ifndef BDEP_DIAGNOSTICS_HXX
 #define BDEP_DIAGNOSTICS_HXX
 
+#include <odb/tracer.hxx>
+
 #include <libbutl/diagnostics.mxx>
 
 #include <bdep/types.hxx> // Note: not <bdep/utility.hxx>
@@ -176,11 +178,25 @@ namespace bdep
 
   // trace
   //
-  struct trace_mark_base: basic_mark_base
+  // Also implement the ODB tracer interface so that we can use it to trace
+  // database statement execution.
+  //
+  struct trace_mark_base: basic_mark_base, odb::tracer
   {
     explicit
     trace_mark_base (const char* name, const void* data = nullptr)
         : basic_mark_base ("trace", name, data) {}
+
+    // odb::tracer interface.
+    //
+    virtual void
+    prepare (odb::connection&, const odb::statement&);
+
+    virtual void
+    execute (odb::connection&, const char* statement);
+
+    virtual void
+    deallocate (odb::connection&, const odb::statement&);
   };
   using trace_mark = butl::diag_mark<trace_mark_base>;
 
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