1 files changed, 73 insertions, 0 deletions
diff --git a/lib/dpkg/perf.h b/lib/dpkg/perf.h
new file mode 100644
index 0000000..6b5d0be
--- /dev/null
+++ b/lib/dpkg/perf.h
@@ -0,0 +1,73 @@
+/*
+ * libdpkg - Debian packaging suite library routines
+ * perf.h - performance testing support
+ *
+ * Copyright © 2009-2019 Guillem Jover <guillem@debian.org>
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBDPKG_PERF_H
+#define LIBDPKG_PERF_H
+
+#include <config.h>
+#include <compat.h>
+
+#include <time.h>
+#include <stdio.h>
+
+#define TEST_OMIT_VARIABLES
+#include <dpkg/test.h>
+
+struct perf_slot {
+	struct timespec t_ini, t_end;
+};
+
+static inline void
+perf_ts_sub(struct timespec *a, struct timespec *b, struct timespec *res)
+{
+	res->tv_sec = a->tv_sec - b->tv_sec;
+	res->tv_nsec = a->tv_nsec - b->tv_nsec;
+	if (res->tv_nsec < 0) {
+		res->tv_sec--;
+		res->tv_nsec += 1000000000;
+	}
+}
+
+static void
+perf_ts_mark_print(const char *str)
+{
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+
+	printf("%lu.%.9lu: %s\n", ts.tv_sec, ts.tv_nsec, str);
+}
+
+static void
+perf_ts_slot_print(struct perf_slot *ps, const char *str)
+{
+	struct timespec t_res;
+
+	perf_ts_sub(&ps->t_end, &ps->t_ini, &t_res);
+
+	printf("%lu.%.9lu: %s (%lu.%.9lu sec)\n",
+	       ps->t_end.tv_sec, ps->t_end.tv_nsec,
+	       str, t_res.tv_sec, t_res.tv_nsec);
+}
+
+#define perf_ts_slot_start(ps) clock_gettime(CLOCK_MONOTONIC, &((ps)->t_ini))
+#define perf_ts_slot_stop(ps) clock_gettime(CLOCK_MONOTONIC, &((ps)->t_end))
+
+#endif