fb-file: some comments and automatic tests

[libucw.git] / lib / sorter / sort-test.c

diff --git a/lib/sorter/sort-test.c b/lib/sorter/sort-test.c
index 2909599f838d64e245c4126283e7aba70a7331c9..f103710070e9115e4b1544323b5b24ec2e725969 100644 (file)
--- a/lib/sorter/sort-test.c
+++ b/lib/sorter/sort-test.c
@@ -11,6 +11,7 @@
 #include "lib/getopt.h"
 #include "lib/conf.h"
 #include "lib/fastbuf.h"
+#include "lib/ff-binary.h"
 #include "lib/hashfunc.h"
 #include "lib/md5.h"
 
@@ -18,19 +19,24 @@
 #include <stdio.h>
 #include <string.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 /*** Time measurement ***/
 
+static timestamp_t timer;
+
 static void
 start(void)
 {
-  init_timer();
+  sync();
+  init_timer(&timer);
 }
 
 static void
 stop(void)
 {
-  log(L_INFO, "Test took %.3fs", get_timer() / 1000.);
+  sync();
+  log(L_INFO, "Test took %.3fs", get_timer(&timer) / 1000.);
 }
 
 /*** Simple 4-byte integer keys ***/
@@ -45,6 +51,7 @@ struct key1 {
 #define SORT_OUTPUT_FB
 #define SORT_UNIQUE
 #define SORT_INT(k) (k).x
+#define SORT_DELETE_INPUT 0
 
 #include "lib/sorter/sorter.h"
 
@@ -88,13 +95,6 @@ static inline void s2_write_merged(struct fastbuf *f, struct key2 **k, void **d
   bwrite(f, k[0], sizeof(struct key2));
 }
 
-static inline void s2_copy_merged(struct key2 **k, struct fastbuf **d UNUSED, uns n, struct fastbuf *dest)
-{
-  for (uns i=1; i<n; i++)
-    k[0]->cnt += k[i]->cnt;
-  bwrite(dest, k[0], sizeof(struct key2));
-}
-
 #define SORT_KEY_REGULAR struct key2
 #define SORT_PREFIX(x) s2_##x
 #define SORT_INPUT_FB
@@ -407,7 +407,6 @@ static int s5_gen(struct s5_pair *p)
 
 static void s5_write_merged(struct fastbuf *f, struct key5 **keys, void **data, uns n, void *buf)
 {
-  /* FIXME: Allow mode where this function is not defined? */
   u32 *a = buf;
   uns m = 0;
   for (uns i=0; i<n; i++)
@@ -489,6 +488,7 @@ static int s5_presort(struct fastbuf *dest, void *buf, size_t bufsize)
 #define SORT_PREFIX(x) s5_##x
 #define SORT_DATA_SIZE(k) (4*(k).cnt)
 #define SORT_UNIFY
+#define SORT_UNIFY_WORKSPACE(k) SORT_DATA_SIZE(k)
 #define SORT_INPUT_PRESORT
 #define SORT_OUTPUT_THIS_FB
 #define SORT_INT(k) (k).x
@@ -499,6 +499,7 @@ static int s5_presort(struct fastbuf *dest, void *buf, size_t bufsize)
 #define SORT_PREFIX(x) s5b_##x
 #define SORT_DATA_SIZE(k) (4*(k).cnt)
 #define SORT_UNIFY
+#define SORT_UNIFY_WORKSPACE(k) SORT_DATA_SIZE(k)
 #define SORT_INPUT_FB
 #define SORT_OUTPUT_THIS_FB
 #define SORT_INT(k) (k).x
@@ -559,6 +560,47 @@ test_graph(uns mode, u64 size)
   bclose(f);
 }
 
+/*** Simple 8-byte integer keys ***/
+
+struct key6 {
+  u64 x;
+};
+
+#define SORT_KEY_REGULAR struct key6
+#define SORT_PREFIX(x) s6_##x
+#define SORT_INPUT_FB
+#define SORT_OUTPUT_FB
+#define SORT_UNIQUE
+#define SORT_INT64(k) (k).x
+
+#include "lib/sorter/sorter.h"
+
+static void
+test_int64(int mode, u64 size)
+{
+  u64 N = size ? nextprime(MIN(size/8, 0xffff0000)) : 0;
+  u64 K = N/4*3;
+  log(L_INFO, ">>> 64-bit integers (%s, N=%llu)", ((char *[]) { "increasing", "decreasing", "random" })[mode], (long long)N);
+
+  struct fastbuf *f = bopen_tmp(65536);
+  for (u64 i=0; i<N; i++)
+    bputq(f, 777777*((mode==0) ? i : (mode==1) ? N-1-i : ((u64)i * K + 17) % N));
+  brewind(f);
+
+  start();
+  f = s6_sort(f, NULL, 777777*(N-1));
+  stop();
+
+  SORT_XTRACE(2, "Verifying");
+  for (u64 i=0; i<N; i++)
+    {
+      u64 j = bgetq(f);
+      if (777777*i != j)
+       die("Discrepancy: %llu instead of %llu", (long long)j, 777777*(long long)i);
+    }
+  bclose(f);
+}
+
 /*** Main ***/
 
 static void
@@ -592,7 +634,13 @@ run_test(uns i, u64 size)
       test_graph(0, size); break;
     case 12:
       test_graph(1, size); break;
-#define TMAX 13
+    case 13:
+      test_int64(0, size); break;
+    case 14:
+      test_int64(1, size); break;
+    case 15:
+      test_int64(2, size); break;
+#define TMAX 16
     }
 }