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@@ -193,7 +193,120 @@ test_buffers_basic(void *arg)
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buf_free(buf);
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if (buf2)
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buf_free(buf2);
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+ buf_shrink_freelists(1);
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}
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+
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+static void
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+test_buffer_pullup(void *arg)
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+{
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+ buf_t *buf;
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+ char *stuff, *tmp;
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+ const char *cp;
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+ size_t sz;
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+ (void)arg;
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+ stuff = tor_malloc(16384);
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+ tmp = tor_malloc(16384);
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+
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+ /* Note: this test doesn't check the nulterminate argument to buf_pullup,
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+ since nothing actually uses it. We should remove it some time. */
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+
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+ buf = buf_new_with_capacity(3000); /* rounds up to next power of 2. */
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+
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+ tt_assert(buf);
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+ tt_int_op(buf_get_default_chunk_size(buf), ==, 4096);
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+
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+ tt_int_op(buf_get_total_allocation(), ==, 0);
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+
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+ /* There are a bunch of cases for pullup. One is the trivial case. Let's
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+ mess around with an empty buffer. */
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+ buf_pullup(buf, 16, 1);
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+ buf_get_first_chunk_data(buf, &cp, &sz);
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+ tt_ptr_op(cp, ==, NULL);
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+ tt_ptr_op(sz, ==, 0);
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+
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+ /* Let's make sure nothing got allocated */
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+ tt_int_op(buf_get_total_allocation(), ==, 0);
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+
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+ /* Case 1: everything puts into the first chunk with some moving. */
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+
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+ /* Let's add some data. */
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+ crypto_rand(stuff, 16384);
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+ write_to_buf(stuff, 3000, buf);
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+ write_to_buf(stuff+3000, 3000, buf);
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+ buf_get_first_chunk_data(buf, &cp, &sz);
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+ tt_ptr_op(cp, !=, NULL);
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+ tt_int_op(sz, <=, 4096);
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+
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+ /* Make room for 3000 bytes in the first chunk, so that the pullup-move code
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+ * can get tested. */
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+ tt_int_op(fetch_from_buf(tmp, 3000, buf), ==, 3000);
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+ test_memeq(tmp, stuff, 3000);
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+ buf_pullup(buf, 2048, 0);
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+ assert_buf_ok(buf);
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+ buf_get_first_chunk_data(buf, &cp, &sz);
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+ tt_ptr_op(cp, !=, NULL);
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+ tt_int_op(sz, >=, 2048);
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+ test_memeq(cp, stuff+3000, 2048);
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+ tt_int_op(3000, ==, buf_datalen(buf));
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+ tt_int_op(fetch_from_buf(tmp, 3000, buf), ==, 0);
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+ test_memeq(tmp, stuff+3000, 2048);
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+
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+ buf_free(buf);
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+
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+ /* Now try the large-chunk case. */
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+ buf = buf_new_with_capacity(3000); /* rounds up to next power of 2. */
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+ write_to_buf(stuff, 4000, buf);
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+ write_to_buf(stuff+4000, 4000, buf);
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+ write_to_buf(stuff+8000, 4000, buf);
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+ write_to_buf(stuff+12000, 4000, buf);
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+ tt_int_op(buf_datalen(buf), ==, 16000);
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+ buf_get_first_chunk_data(buf, &cp, &sz);
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+ tt_ptr_op(cp, !=, NULL);
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+ tt_int_op(sz, <=, 4096);
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+
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+ buf_pullup(buf, 12500, 0);
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+ assert_buf_ok(buf);
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+ buf_get_first_chunk_data(buf, &cp, &sz);
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+ tt_ptr_op(cp, !=, NULL);
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+ tt_int_op(sz, >=, 12500);
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+ test_memeq(cp, stuff, 12500);
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+ tt_int_op(buf_datalen(buf), ==, 16000);
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+
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+ fetch_from_buf(tmp, 12400, buf);
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+ test_memeq(tmp, stuff, 12400);
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+ tt_int_op(buf_datalen(buf), ==, 3600);
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+ fetch_from_buf(tmp, 3500, buf);
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+ test_memeq(tmp, stuff+12400, 3500);
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+ fetch_from_buf(tmp, 100, buf);
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+ test_memeq(tmp, stuff+15900, 10);
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+
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+ buf_free(buf);
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+
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+ /* Make sure that the pull-up-whole-buffer case works */
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+ buf = buf_new_with_capacity(3000); /* rounds up to next power of 2. */
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+ write_to_buf(stuff, 4000, buf);
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+ write_to_buf(stuff+4000, 4000, buf);
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+ fetch_from_buf(tmp, 100, buf); /* dump 100 bytes from first chunk */
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+ buf_pullup(buf, 16000, 0); /* Way too much. */
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+ assert_buf_ok(buf);
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+ buf_get_first_chunk_data(buf, &cp, &sz);
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+ tt_ptr_op(cp, !=, NULL);
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+ tt_int_op(sz, ==, 7900);
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+ test_memeq(cp, stuff+100, 7900);
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+
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+ buf_free(buf);
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+ buf = NULL;
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+
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+ buf_shrink_freelists(1);
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+
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+ tt_int_op(buf_get_total_allocation(), ==, 0);
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+ done:
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+ buf_free(buf);
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+ buf_shrink_freelists(1);
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+ tor_free(stuff);
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+ tor_free(tmp);
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+}
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+
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static void
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test_buffer_copy(void *arg)
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{
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@@ -257,6 +370,7 @@ test_buffer_copy(void *arg)
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generic_buffer_free(buf);
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if (buf2)
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generic_buffer_free(buf2);
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+ buf_shrink_freelists(1);
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}
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static void
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@@ -331,12 +445,40 @@ test_buffer_ext_or_cmd(void *arg)
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ext_or_cmd_free(cmd);
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generic_buffer_free(buf);
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tor_free(tmp);
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+ buf_shrink_freelists(1);
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+}
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+
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+static void
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+test_buffer_allocation_tracking(void *arg)
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+{
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+ buf_t *buf1 = NULL, *buf2 = NULL;
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+
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+ (void)arg;
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+
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+ tt_int_op(buf_get_total_allocation(), ==, 0);
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+
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+ buf1 = buf_new();
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+ tt_assert(buf1);
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+ buf2 = buf_new();
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+ tt_assert(buf2);
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+
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+ //xXXXXXX buf_add
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+
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+ tt_int_op(buf_get_total_allocation(), ==, 0);
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+
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+ done:
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+ buf_free(buf1);
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+ buf_free(buf2);
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+ buf_shrink_freelists(1);
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}
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struct testcase_t buffer_tests[] = {
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- { "basic", test_buffers_basic, 0, NULL, NULL },
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- { "copy", test_buffer_copy, 0, NULL, NULL },
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- { "ext_or_cmd", test_buffer_ext_or_cmd, 0, NULL, NULL },
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+ { "basic", test_buffers_basic, TT_FORK, NULL, NULL },
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+ { "copy", test_buffer_copy, TT_FORK, NULL, NULL },
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+ { "pullup", test_buffer_pullup, TT_FORK, NULL, NULL },
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+ { "ext_or_cmd", test_buffer_ext_or_cmd, TT_FORK, NULL, NULL },
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+ { "allocation_tracking", test_buffer_allocation_tracking, TT_FORK,
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+ NULL, NULL },
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END_OF_TESTCASES
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};
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