From: "Steven Rostedt (Google)" <rostedt@xxxxxxxxxxx>
Add more tests to test tracecmd_iterate_events() and
tracecmd_iterate_events_reverse(), as well as stopping and restarting.
Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
---
utest/tracecmd-utest.c | 110 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 110 insertions(+)
diff --git a/utest/tracecmd-utest.c b/utest/tracecmd-utest.c
index d67678e36554..5dce3e94df6a 100644
--- a/utest/tracecmd-utest.c
+++ b/utest/tracecmd-utest.c
@@ -461,6 +461,15 @@ static int read_events(struct tracecmd_input *handle, struct tep_record *record,
return 0;
}
+static int read_events_10(struct tracecmd_input *handle, struct tep_record *record,
+ int cpu, void *data)
+{
+ struct callback_data *cd = data;
+
+ read_events(handle, record, cpu, data);
+ return cd->counter < 10 ? 0 : 1;
+}
+
static void test_trace_library_read(void)
{
struct tracecmd_input *handle;
@@ -488,6 +497,103 @@ static void test_trace_library_read(void)
trace_seq_destroy(&data.seq);
}
+static void test_trace_library_read_inc(void)
+{
+ struct tracecmd_input *handle;
+ struct callback_data data;
+ struct stat st;
+ long save_count;
+ long total = 0;
+ int ret;
+
+ data.counter = 0;
+ trace_seq_init(&data.seq);
+
+ /* If the trace data is already created, just use it, otherwise make it again */
+ if (stat(TRACECMD_FILE, &st) < 0) {
+ ret = run_trace("record", TRACECMD_OUT, "-e", "sched", "sleep", "1", NULL);
+ CU_TEST(ret == 0);
+ }
+
+ /* First read all again */
+ handle = tracecmd_open(TRACECMD_FILE, 0);
+ CU_TEST(handle != NULL);
+ ret = tracecmd_iterate_events(handle, NULL, 0, read_events, &data);
+ CU_TEST(ret == 0);
+ CU_TEST(data.counter > 0);
+
+ /* Save the counter */
+ save_count = data.counter;
+
+ tracecmd_iterate_reset(handle);
+
+ /* Read 10 at a time */
+ do {
+ data.counter = 0;
+ ret = tracecmd_iterate_events(handle, NULL, 0, read_events_10, &data);
+ CU_TEST(ret >= 0);
+ CU_TEST(data.counter <= 10);
+ total += data.counter;
+ } while (data.counter);
+ CU_TEST(ret == 0);
+
+ CU_TEST(total == save_count);
+
+ trace_seq_destroy(&data.seq);
+ tracecmd_close(handle);
+}
+
+static void test_trace_library_read_back(void)
+{
+ struct tracecmd_input *handle;
+ struct callback_data data;
+ struct stat st;
+ long save_count;
+ int ret;
+
+ data.counter = 0;
+ trace_seq_init(&data.seq);
+
+ /* If the trace data is already created, just use it, otherwise make it again */
+ if (stat(TRACECMD_FILE, &st) < 0) {
+ ret = run_trace("record", TRACECMD_OUT, "-e", "sched", "sleep", "1", NULL);
+ CU_TEST(ret == 0);
+ }
+
+ /* First read all again */
+ handle = tracecmd_open(TRACECMD_FILE, 0);
+ CU_TEST(handle != NULL);
+ ret = tracecmd_iterate_events(handle, NULL, 0, read_events, &data);
+ CU_TEST(ret == 0);
+ CU_TEST(data.counter > 0);
+
+ /* Save the counter */
+ save_count = data.counter;
+
+ tracecmd_iterate_reset(handle);
+
+ /* Read backwards */
+ data.counter = 0;
+ ret = tracecmd_iterate_events_reverse(handle, NULL, 0, read_events, &data, false);
+ CU_TEST(ret == 0);
+ CU_TEST(data.counter == save_count);
+
+ /* Read forward again */
+ data.counter = 0;
+ ret = tracecmd_iterate_events(handle, NULL, 0, read_events, &data);
+ CU_TEST(ret == 0);
+ CU_TEST(data.counter == save_count);
+
+ /* Read backwards from where we left off */
+ data.counter = 0;
+ ret = tracecmd_iterate_events_reverse(handle, NULL, 0, read_events, &data, true);
+ CU_TEST(ret == 0);
+ CU_TEST(data.counter == save_count);
+
+ trace_seq_destroy(&data.seq);
+ tracecmd_close(handle);
+}
+
static int test_suite_destroy(void)
{
unlink(TRACECMD_FILE);
@@ -540,6 +646,10 @@ void test_tracecmd_lib(void)
test_trace_convert6);
CU_add_test(suite, "Use libraries to read file",
test_trace_library_read);
+ CU_add_test(suite, "Use libraries to read file incremental",
+ test_trace_library_read_inc);
+ CU_add_test(suite, "Use libraries to read file backwards",
+ test_trace_library_read_back);
CU_add_test(suite, "Test max length",
test_trace_record_max);
}
--
2.43.0
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