nostrdb: port everything over to be in as sync as possible

for now

nostrdb/bench.c

@@ -0,0 +1,51 @@
+
+#include "io.h"
+#include "nostrdb.h"
+#include <sys/mman.h>
+#include <time.h>
+#include <stdlib.h>
+
+static int bench_parser(int times, const char *json, int len)
+{
+	static unsigned char buf[2<<18];
+
+	struct timespec t1, t2;
+	int i;
+	long nanos, ms;
+	struct ndb_note *note;
+
+	clock_gettime(CLOCK_MONOTONIC, &t1);
+	for (i = 0; i < times; i++) {
+		if (!ndb_note_from_json(json, len, &note, buf, sizeof(buf))) {
+			return 0;
+		}
+	}
+	clock_gettime(CLOCK_MONOTONIC, &t2);
+
+	nanos = (t2.tv_sec - t1.tv_sec) * (long)1e9 + (t2.tv_nsec - t1.tv_nsec);
+	ms = nanos / 1e6;
+	printf("ns/run\t%ld\nms/run\t%f\nns\t%ld\nms\t%ld\n",
+		nanos/times, (double)ms/(double)times, nanos, ms);
+
+	return 1;
+}
+
+int main(int argc, char *argv[], char **env)
+{
+	static const int alloc_size = 2 << 18;
+	int times = 10000, len = 0;
+	unsigned char buf[alloc_size];
+
+	if (!read_file("testdata/contacts.json", buf, alloc_size, &len))
+		return 1;
+
+	if (argc >= 2)
+		times = atoi(argv[1]);
+
+	fprintf(stderr, "benching parser %d times\n", times);
+	if (!bench_parser(times, (const char*)&buf[0], len))
+		return 2;
+
+	return 0;
+}
+