t/helper: add a test helper to compute hash speed

diff --git a/t/helper/test-hashmap.c b/t/helper/test-hashmap.c
index 1145d5167115a761d319b1e205500e765cd090cd..23d2b172fe708f711a15613e906637cd948324ef 100644 (file)
--- a/t/helper/test-hashmap.c
+++ b/t/helper/test-hashmap.c
@@ -1,5 +1,7 @@
+#include "test-tool.h"
 #include "git-compat-util.h"
 #include "hashmap.h"
+#include "strbuf.h"
 
 struct test_entry
 {
@@ -29,11 +31,12 @@ static int test_entry_cmp(const void *cmp_data,
                return strcmp(e1->key, key ? key : e2->key);
 }
 
-static struct test_entry *alloc_test_entry(int hash, char *key, int klen,
-               char *value, int vlen)
+static struct test_entry *alloc_test_entry(unsigned int hash,
+                                          char *key, char *value)
 {
-       struct test_entry *entry = malloc(sizeof(struct test_entry) + klen
-                       + vlen + 2);
+       size_t klen = strlen(key);
+       size_t vlen = strlen(value);
+       struct test_entry *entry = xmalloc(st_add4(sizeof(*entry), klen, vlen, 2));
        hashmap_entry_init(entry, hash);
        memcpy(entry->key, key, klen + 1);
        memcpy(entry->key + klen + 1, value, vlen + 1);
@@ -75,7 +78,7 @@ static unsigned int hash(unsigned int method, unsigned int i, const char *key)
 
 /*
  * Test performance of hashmap.[ch]
- * Usage: time echo "perfhashmap method rounds" | test-hashmap
+ * Usage: time echo "perfhashmap method rounds" | test-tool hashmap
  */
 static void perf_hashmap(unsigned int method, unsigned int rounds)
 {
@@ -85,11 +88,11 @@ static void perf_hashmap(unsigned int method, unsigned int rounds)
        unsigned int *hashes;
        unsigned int i, j;
 
-       entries = malloc(TEST_SIZE * sizeof(struct test_entry *));
-       hashes = malloc(TEST_SIZE * sizeof(int));
+       ALLOC_ARRAY(entries, TEST_SIZE);
+       ALLOC_ARRAY(hashes, TEST_SIZE);
        for (i = 0; i < TEST_SIZE; i++) {
-               snprintf(buf, sizeof(buf), "%i", i);
-               entries[i] = alloc_test_entry(0, buf, strlen(buf), "", 0);
+               xsnprintf(buf, sizeof(buf), "%i", i);
+               entries[i] = alloc_test_entry(0, buf, "");
                hashes[i] = hash(method, i, entries[i]->key);
        }
 
@@ -142,9 +145,9 @@ static void perf_hashmap(unsigned int method, unsigned int rounds)
  *
  * perfhashmap method rounds -> test hashmap.[ch] performance
  */
-int cmd_main(int argc, const char **argv)
+int cmd__hashmap(int argc, const char **argv)
 {
-       char line[1024];
+       struct strbuf line = STRBUF_INIT;
        struct hashmap map;
        int icase;
 
@@ -153,44 +156,42 @@ int cmd_main(int argc, const char **argv)
        hashmap_init(&map, test_entry_cmp, &icase, 0);
 
        /* process commands from stdin */
-       while (fgets(line, sizeof(line), stdin)) {
+       while (strbuf_getline(&line, stdin) != EOF) {
                char *cmd, *p1 = NULL, *p2 = NULL;
-               int l1 = 0, l2 = 0, hash = 0;
+               unsigned int hash = 0;
                struct test_entry *entry;
 
                /* break line into command and up to two parameters */
-               cmd = strtok(line, DELIM);
+               cmd = strtok(line.buf, DELIM);
                /* ignore empty lines */
                if (!cmd || *cmd == '#')
                        continue;
 
                p1 = strtok(NULL, DELIM);
                if (p1) {
-                       l1 = strlen(p1);
                        hash = icase ? strihash(p1) : strhash(p1);
                        p2 = strtok(NULL, DELIM);
-                       if (p2)
-                               l2 = strlen(p2);
                }
 
-               if (!strcmp("hash", cmd) && l1) {
+               if (!strcmp("hash", cmd) && p1) {
 
                        /* print results of different hash functions */
-                       printf("%u %u %u %u\n", strhash(p1), memhash(p1, l1),
-                                       strihash(p1), memihash(p1, l1));
+                       printf("%u %u %u %u\n",
+                              strhash(p1), memhash(p1, strlen(p1)),
+                              strihash(p1), memihash(p1, strlen(p1)));
 
-               } else if (!strcmp("add", cmd) && l1 && l2) {
+               } else if (!strcmp("add", cmd) && p1 && p2) {
 
                        /* create entry with key = p1, value = p2 */
-                       entry = alloc_test_entry(hash, p1, l1, p2, l2);
+                       entry = alloc_test_entry(hash, p1, p2);
 
                        /* add to hashmap */
                        hashmap_add(&map, entry);
 
-               } else if (!strcmp("put", cmd) && l1 && l2) {
+               } else if (!strcmp("put", cmd) && p1 && p2) {
 
                        /* create entry with key = p1, value = p2 */
-                       entry = alloc_test_entry(hash, p1, l1, p2, l2);
+                       entry = alloc_test_entry(hash, p1, p2);
 
                        /* add / replace entry */
                        entry = hashmap_put(&map, entry);
@@ -199,7 +200,7 @@ int cmd_main(int argc, const char **argv)
                        puts(entry ? get_value(entry) : "NULL");
                        free(entry);
 
-               } else if (!strcmp("get", cmd) && l1) {
+               } else if (!strcmp("get", cmd) && p1) {
 
                        /* lookup entry in hashmap */
                        entry = hashmap_get_from_hash(&map, hash, p1);
@@ -212,7 +213,7 @@ int cmd_main(int argc, const char **argv)
                                entry = hashmap_get_next(&map, entry);
                        }
 
-               } else if (!strcmp("remove", cmd) && l1) {
+               } else if (!strcmp("remove", cmd) && p1) {
 
                        /* setup static key */
                        struct hashmap_entry key;
@@ -238,7 +239,7 @@ int cmd_main(int argc, const char **argv)
                        printf("%u %u\n", map.tablesize,
                               hashmap_get_size(&map));
 
-               } else if (!strcmp("intern", cmd) && l1) {
+               } else if (!strcmp("intern", cmd) && p1) {
 
                        /* test that strintern works */
                        const char *i1 = strintern(p1);
@@ -252,7 +253,7 @@ int cmd_main(int argc, const char **argv)
                        else
                                printf("%s\n", i1);
 
-               } else if (!strcmp("perfhashmap", cmd) && l1 && l2) {
+               } else if (!strcmp("perfhashmap", cmd) && p1 && p2) {
 
                        perf_hashmap(atoi(p1), atoi(p2));
 
@@ -263,6 +264,7 @@ int cmd_main(int argc, const char **argv)
                }
        }
 
+       strbuf_release(&line);
        hashmap_free(&map, 1);
        return 0;
 }