gcov / test framework: sigterm not sigkill

Otherwise, gcov data vanishes without a trace.

Add a __gcov_flush() call to the unix signal handler, under #ifdef
CLIB_GCOV. Add -DCLIB_GCOV to vpp_gcov_TAG_CFLAGS.

Change-Id: I2726e671b26dfbe7fae88f46a8207bb2b5106884
Signed-off-by: Dave Barach <dave@barachs.net>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/vlib/unix/main.c b/src/vlib/unix/main.c
index ed909b65feb..82de8ec7632 100755
--- a/src/vlib/unix/main.c
+++ b/src/vlib/unix/main.c
@@ -139,6 +139,17 @@ unix_signal_handler (int signum, siginfo_t * si, ucontext_t * uc)
       break;
     }
 
+#ifdef CLIB_GCOV
+  /*
+   * Test framework sends SIGTERM, so we need to flush the
+   * code coverage stats here.
+   */
+  {
+    void __gcov_flush (void);
+    __gcov_flush ();
+  }
+#endif
+
   /* Null terminate. */
   vec_add1 (syslog_msg, 0);