1 files changed, 60 insertions, 0 deletions
diff --git a/deps/jemalloc/test/include/test/bench.h b/deps/jemalloc/test/include/test/bench.h
new file mode 100644
index 0000000..0397c94
--- /dev/null
+++ b/deps/jemalloc/test/include/test/bench.h
@@ -0,0 +1,60 @@
+static inline void
+time_func(timedelta_t *timer, uint64_t nwarmup, uint64_t niter,
+    void (*func)(void)) {
+	uint64_t i;
+
+	for (i = 0; i < nwarmup; i++) {
+		func();
+	}
+	timer_start(timer);
+	for (i = 0; i < niter; i++) {
+		func();
+	}
+	timer_stop(timer);
+}
+
+#define FMT_NSECS_BUF_SIZE 100
+/* Print nanoseconds / iter into the buffer "buf". */
+static inline void
+fmt_nsecs(uint64_t usec, uint64_t iters, char *buf) {
+	uint64_t nsec = usec * 1000;
+	/* We'll display 3 digits after the decimal point. */
+	uint64_t nsec1000 = nsec * 1000;
+	uint64_t nsecs_per_iter1000 = nsec1000 / iters;
+	uint64_t intpart = nsecs_per_iter1000 / 1000;
+	uint64_t fracpart = nsecs_per_iter1000 % 1000;
+	malloc_snprintf(buf, FMT_NSECS_BUF_SIZE, "%"FMTu64".%03"FMTu64, intpart,
+	    fracpart);
+}
+
+static inline void
+compare_funcs(uint64_t nwarmup, uint64_t niter, const char *name_a,
+    void (*func_a), const char *name_b, void (*func_b)) {
+	timedelta_t timer_a, timer_b;
+	char ratio_buf[6];
+	void *p;
+
+	p = mallocx(1, 0);
+	if (p == NULL) {
+		test_fail("Unexpected mallocx() failure");
+		return;
+	}
+
+	time_func(&timer_a, nwarmup, niter, func_a);
+	time_func(&timer_b, nwarmup, niter, func_b);
+
+	uint64_t usec_a = timer_usec(&timer_a);
+	char buf_a[FMT_NSECS_BUF_SIZE];
+	fmt_nsecs(usec_a, niter, buf_a);
+
+	uint64_t usec_b = timer_usec(&timer_b);
+	char buf_b[FMT_NSECS_BUF_SIZE];
+	fmt_nsecs(usec_b, niter, buf_b);
+
+	timer_ratio(&timer_a, &timer_b, ratio_buf, sizeof(ratio_buf));
+	malloc_printf("%"FMTu64" iterations, %s=%"FMTu64"us (%s ns/iter), "
+	    "%s=%"FMTu64"us (%s ns/iter), ratio=1:%s\n",
+	    niter, name_a, usec_a, buf_a, name_b, usec_b, buf_b, ratio_buf);
+
+	dallocx(p, 0);
+}