t/: Add a new performance test.

The new test case always succeeds, it's purpose is to echo the
performance results.

Signed-off-by: Gergely Nagy <algernon@balabit.hu>

1 files changed, 73 insertions, 0 deletions

diff --git a/t/test_perf.c b/t/test_perf.c
new file mode 100644
index 0000000..9e28b20
--- /dev/null
+++ b/t/test_perf.c
@@ -0,0 +1,73 @@
+#define _GNU_SOURCE 1
+
+#include "umberlog.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+static inline struct timespec
+ts_diff (struct timespec start, struct timespec end)
+{
+  struct timespec temp;
+  if ((end.tv_nsec - start.tv_nsec) < 0)
+    {
+      temp.tv_sec = end.tv_sec - start.tv_sec - 1;
+      temp.tv_nsec = 1000000000 + end.tv_nsec - start.tv_nsec;
+    }
+  else
+    {
+      temp.tv_sec = end.tv_sec - start.tv_sec;
+      temp.tv_nsec = end.tv_nsec - start.tv_nsec;
+    }
+  return temp;
+}
+
+static inline void
+test_perf_simple (int flags, unsigned long cnt)
+{
+  char *msg;
+  unsigned long i;
+  struct timespec st, et, dt;
+  long nsec;
+  const char *fls;
+
+  openlog ("umberlog/test_perf_simple", flags, LOG_LOCAL0);
+
+  clock_gettime (CLOCK_MONOTONIC, &st);
+  for (i = 0; i < cnt; i++)
+    {
+      msg = ul_format (LOG_DEBUG, "hello, I'm %s!", __FUNCTION__, NULL);
+      free (msg);
+    }
+  clock_gettime (CLOCK_MONOTONIC, &et);
+
+  closelog ();
+
+  dt = ts_diff (st, et);
+
+  if (flags & LOG_UL_NODISCOVER)
+    fls = "no-discover";
+  else if (flags & LOG_UL_NOTIME)
+    fls = "no-time";
+  else
+    fls = "discover";
+
+  printf ("# test_perf_simple(%s, %lu): %lu.%lus\n",
+          fls, cnt,
+          dt.tv_sec, dt.tv_nsec);
+}
+
+int
+main (void)
+{
+  test_perf_simple (0, 100000);
+  test_perf_simple (0, 1000000);
+
+  test_perf_simple (LOG_UL_NODISCOVER, 100000);
+  test_perf_simple (LOG_UL_NODISCOVER, 1000000);
+
+  test_perf_simple (LOG_UL_NOTIME, 100000);
+  test_perf_simple (LOG_UL_NOTIME, 1000000);
+
+  return 0;
+}