little linear benchmark.HEADmaster

1 files changed, 47 insertions, 0 deletions

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..846c8c9
--- /dev/null
+++ b/main.c
@@ -0,0 +1,47 @@
+#include <u.h>
+#include <libc.h>
+#include <json.h>
+
+enum {
+	MB = 1024*1024
+};
+
+vlong t0, Δt;
+
+void
+usage(void)
+{
+	fprint(2, "usage: %s file\n", argv0);
+	exits("usage");
+}
+
+void
+main(int argc, char *argv[])
+{
+	JSON *j;
+	char buf[8*MB];
+	int fd;
+
+	JSONfmtinstall();
+	ARGBEGIN{
+	default: usage();
+	}ARGEND;
+	if(argc != 1)
+		usage();
+	fd = open(argv[0], OREAD);
+	if(fd < 0)
+		sysfatal("open: %r");
+	if(read(fd, buf, sizeof buf) <= 0)
+		sysfatal("read: %r");
+	t0 = nsec();
+	j = jsonparse(buf);
+	Δt = nsec()-t0;
+	fprint(2, "jsonparse took %lldns\n", Δt);
+	if(j == nil)
+		sysfatal("jsonparse: %r");
+	t0 = nsec();
+	print("%J\n", j);
+	Δt = nsec()-t0;
+	fprint(2, "jsonfmt took %lldns\n", Δt);
+	exits(0);
+}