dirbench hacks to work-around broken copy-on-write

3fea2693 · Silas Boyd-Wickizer · 0372a8b5 · 3fea2693
--- a/bin/dirbench.cc
+++ b/bin/dirbench.cc
@@ -7,17 +7,11 @@
 static const bool pinit = true;
-#ifdef HW_qemu
-enum { nloop = 50 };
-#else
-enum { nloop = 1000 };
-#endif
 enum { nfile = 10 };
 enum { nlookup = 100 };
 void
-bench(u32 tid)
+bench(u32 tid, int nloop)
 {
  char pn[MAXNAME];
@@ -58,11 +52,20 @@ int
 main(int ac, char** av)
 {
  int nthread;
+  int nloop;
+#ifdef HW_qemu
+  nloop = 50;
+#else
+  nloop = 1000;
+#endif
  if (ac < 2)
-    die("usage: %s nthreads", av[0]);
+    die("usage: %s nthreads [nloop]", av[0]);
  nthread = atoi(av[1]);
+  if (ac > 2)
+    nloop = atoi(av[2]);
  mkdir("/dbx");
@@ -71,7 +74,7 @@ main(int ac, char** av)
  for(u32 i = 0; i < nthread; i++) {
    int pid = fork(0);
    if (pid == 0)
-      bench(i);
+      bench(i, nloop);
    else if (pid < 0)
      die("fork");
  }