Tests: test_notification_ust: reduce number of event generated
[lttng-tools.git] / tests / regression / tools / notification / notification.c
index f076bbd0e5f5373740061b13f47ef4efdfcd2ad9..97a056b6ab94b49a694c81dbecae4a1b28e9426f 100644 (file)
@@ -21,9 +21,9 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <signal.h>
-#include <errno.h>
 #include <poll.h>
 
+#include <common/compat/errno.h>
 #include <lttng/action/action.h>
 #include <lttng/action/notify.h>
 #include <lttng/condition/buffer-usage.h>
@@ -87,6 +87,7 @@ void wait_on_file(const char *path, bool file_exist)
        }
 }
 
+static
 int write_pipe(const char *path, uint8_t data)
 {
        int ret = 0;
@@ -118,6 +119,7 @@ end:
        return ret;
 }
 
+static
 int stop_consumer(const char **argv)
 {
        int ret = 0, i;
@@ -128,6 +130,7 @@ int stop_consumer(const char **argv)
        return ret;
 }
 
+static
 int resume_consumer(const char **argv)
 {
        int ret = 0, i;
@@ -138,7 +141,8 @@ int resume_consumer(const char **argv)
        return ret;
 }
 
-int suspend_application()
+static
+int suspend_application(void)
 {
        int ret;
        struct stat buf;
@@ -166,7 +170,8 @@ error:
 
 }
 
-int resume_application()
+static
+int resume_application(void)
 {
        int ret;
        struct stat buf;
@@ -196,6 +201,7 @@ error:
 }
 
 
+static
 void test_triggers_buffer_usage_condition(const char *session_name,
                const char *channel_name,
                enum lttng_domain_type domain_type,
@@ -315,7 +321,7 @@ void test_triggers_buffer_usage_condition(const char *session_name,
                        assert("Logic error for test vector generation");
                }
 
-               loop_ret = asprintf(&test_tuple_string, "session name %s, channel name  %s, threshold ratio %s, threshold byte %s, domain type %s",
+               loop_ret = asprintf(&test_tuple_string, "session name %s, channel name %s, threshold ratio %s, threshold byte %s, domain type %s",
                                session_name_set ? "set" : "unset",
                                channel_name_set ? "set" : "unset",
                                threshold_ratio_set ? "set" : "unset",
@@ -389,7 +395,52 @@ void wait_data_pending(const char *session_name)
        } while (ret != 0);
 }
 
-void test_notification_channel(const char *session_name, const char *channel_name, const enum lttng_domain_type domain_type, const char **argv)
+static
+int setup_buffer_usage_condition(struct lttng_condition *condition,
+               const char *condition_name,
+               const char *session_name,
+               const char *channel_name,
+               const enum lttng_domain_type domain_type)
+{
+       enum lttng_condition_status condition_status;
+       int ret = 0;
+
+       condition_status = lttng_condition_buffer_usage_set_session_name(
+                       condition, session_name);
+       if (condition_status != LTTNG_CONDITION_STATUS_OK) {
+               fail("Failed to set session name on creation of condition `%s`",
+                               condition_name);
+               ret = -1;
+               goto end;
+       }
+
+       condition_status = lttng_condition_buffer_usage_set_channel_name(
+                       condition, channel_name);
+       if (condition_status != LTTNG_CONDITION_STATUS_OK) {
+               fail("Failed to set channel name on creation of condition `%s`",
+                               condition_name);
+               ret = -1;
+               goto end;
+       }
+
+       condition_status = lttng_condition_buffer_usage_set_domain_type(
+                       condition, domain_type);
+       if (condition_status != LTTNG_CONDITION_STATUS_OK) {
+               fail("Failed to set domain type on creation of condition `%s`",
+                               condition_name);
+               ret = -1;
+               goto end;
+       }
+
+end:
+       return ret;
+}
+
+static
+void test_notification_channel(const char *session_name,
+               const char *channel_name,
+               const enum lttng_domain_type domain_type,
+               const char **argv)
 {
        int ret = 0;
        enum lttng_condition_status condition_status;
@@ -406,7 +457,7 @@ void test_notification_channel(const char *session_name, const char *channel_nam
        struct lttng_condition *dummy_condition = NULL;
 
        double low_ratio = 0.0;
-       double high_ratio = 0.99;
+       double high_ratio = 0.90;
 
        /* Set-up */
        action = lttng_action_notify_create();
@@ -436,22 +487,10 @@ void test_notification_channel(const char *session_name, const char *channel_nam
                goto end;
        }
 
-       condition_status = lttng_condition_buffer_usage_set_session_name(
-                       dummy_condition, session_name);
-       if (condition_status != LTTNG_CONDITION_STATUS_OK) {
-               fail("Setup error on dummy_condition creation");
-               goto end;
-       }
-       condition_status = lttng_condition_buffer_usage_set_channel_name(
-                       dummy_condition, channel_name);
-       if (condition_status != LTTNG_CONDITION_STATUS_OK) {
-               fail("Setup error on dummy_condition creation");
-               goto end;
-       }
-       condition_status = lttng_condition_buffer_usage_set_domain_type(
-                       dummy_condition, domain_type);
-       if (condition_status != LTTNG_CONDITION_STATUS_OK) {
-               fail("Setup error on dummy_condition creation");
+       ret = setup_buffer_usage_condition(dummy_condition, "dummy_condition",
+                       session_name, channel_name, domain_type);
+       if (ret) {
+               fail("Setup error on dummy condition creation");
                goto end;
        }
 
@@ -468,24 +507,11 @@ void test_notification_channel(const char *session_name, const char *channel_nam
                goto end;
        }
 
-       condition_status = lttng_condition_buffer_usage_set_session_name(
-                       low_condition, session_name);
-       if (condition_status != LTTNG_CONDITION_STATUS_OK) {
-               fail("Setup error on low_condition creation");
-               goto end;
-       }
-       condition_status = lttng_condition_buffer_usage_set_channel_name(
-                       low_condition, channel_name);
-       if (condition_status != LTTNG_CONDITION_STATUS_OK) {
-               fail("Setup error on low_condition creation");
-               goto end;
-       }
-       condition_status = lttng_condition_buffer_usage_set_domain_type(
-                       low_condition, domain_type);
-       if (condition_status != LTTNG_CONDITION_STATUS_OK) {
-               fail("Setup error on low_condition creation");
+       ret = setup_buffer_usage_condition(low_condition, "low_condition",
+                       session_name, channel_name, domain_type);
+       if (ret) {
+               fail("Setup error on low condition creation");
                goto end;
-
        }
 
        /* Register a high condition with a ratio */
@@ -502,22 +528,10 @@ void test_notification_channel(const char *session_name, const char *channel_nam
                goto end;
        }
 
-       condition_status = lttng_condition_buffer_usage_set_session_name(
-                       high_condition, session_name);
-       if (condition_status != LTTNG_CONDITION_STATUS_OK) {
-               fail("Setup error on high_condition creation");
-               goto end;
-       }
-       condition_status = lttng_condition_buffer_usage_set_channel_name(
-                       high_condition, channel_name);
-       if (condition_status != LTTNG_CONDITION_STATUS_OK) {
-               fail("Setup error on high_condition creation");
-               goto end;
-       }
-       condition_status = lttng_condition_buffer_usage_set_domain_type(
-                       high_condition, domain_type);
-       if (condition_status != LTTNG_CONDITION_STATUS_OK) {
-               fail("Setup error on high_condition creation");
+       ret = setup_buffer_usage_condition(high_condition, "high_condition",
+                       session_name, channel_name, domain_type);
+       if (ret) {
+               fail("Setup error on high condition creation");
                goto end;
        }
 
@@ -550,7 +564,8 @@ void test_notification_channel(const char *session_name, const char *channel_nam
        }
 
        /* Begin testing */
-       notification_channel = lttng_notification_channel_create(lttng_session_daemon_notification_endpoint);
+       notification_channel = lttng_notification_channel_create(
+                       lttng_session_daemon_notification_endpoint);
        ok(notification_channel, "Notification channel object creation");
        if (!notification_channel) {
                goto end;
@@ -558,46 +573,69 @@ void test_notification_channel(const char *session_name, const char *channel_nam
 
        /* Basic error path check */
        nc_status = lttng_notification_channel_subscribe(NULL, NULL);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID, "Notification channel subscription is invalid: NULL, NULL");
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID,
+                       "Notification channel subscription is invalid: NULL, NULL");
 
        nc_status = lttng_notification_channel_subscribe(notification_channel, NULL);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID, "Notification channel subscription is invalid: NON-NULL, NULL");
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID,
+                       "Notification channel subscription is invalid: NON-NULL, NULL");
 
        nc_status = lttng_notification_channel_subscribe(NULL, low_condition);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID, "Notification channel subscription is invalid: NULL, NON-NULL");
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID,
+                       "Notification channel subscription is invalid: NULL, NON-NULL");
 
-       nc_status = lttng_notification_channel_subscribe(notification_channel, dummy_invalid_condition);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID, "Subscribing to an invalid condition");
+       nc_status = lttng_notification_channel_subscribe(
+                       notification_channel, dummy_invalid_condition);
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID,
+                       "Subscribing to an invalid condition");
 
-       nc_status = lttng_notification_channel_unsubscribe(notification_channel, dummy_invalid_condition);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID, "Unsubscribing from an invalid condition");
+       nc_status = lttng_notification_channel_unsubscribe(
+                       notification_channel, dummy_invalid_condition);
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INVALID,
+                       "Unsubscribing from an invalid condition");
 
-       nc_status = lttng_notification_channel_unsubscribe(notification_channel, dummy_condition);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_UNKNOWN_CONDITION, "Unsubscribing from a valid unknown condition");
+       nc_status = lttng_notification_channel_unsubscribe(
+                       notification_channel, dummy_condition);
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_UNKNOWN_CONDITION,
+                       "Unsubscribing from a valid unknown condition");
 
        /* Subscribe a valid low condition */
-       nc_status = lttng_notification_channel_subscribe(notification_channel, low_condition);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK, "Subscribe to condition");
+       nc_status = lttng_notification_channel_subscribe(
+                       notification_channel, low_condition);
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK,
+                       "Subscribe to condition");
 
        /* Subscribe a valid high condition */
-       nc_status = lttng_notification_channel_subscribe(notification_channel, high_condition);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK, "Subscribe to condition");
+       nc_status = lttng_notification_channel_subscribe(
+                       notification_channel, high_condition);
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK,
+                       "Subscribe to condition");
+
+       nc_status = lttng_notification_channel_subscribe(
+                       notification_channel, low_condition);
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_ALREADY_SUBSCRIBED,
+                       "Subscribe to a condition for which subscription was already done");
 
-       nc_status = lttng_notification_channel_subscribe(notification_channel, low_condition);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_ALREADY_SUBSCRIBED, "Subscribe to a condition for which subscription was already done");
+       nc_status = lttng_notification_channel_subscribe(
+                       notification_channel, high_condition);
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_ALREADY_SUBSCRIBED,
+                       "Subscribe to a condition for which subscription was already done");
 
-       nc_status = lttng_notification_channel_subscribe(notification_channel, high_condition);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_ALREADY_SUBSCRIBED, "Subscribe to a condition for which subscription was already done");
+       resume_application();
 
        /* Wait for notification to happen */
        stop_consumer(argv);
        lttng_start_tracing(session_name);
 
        /* Wait for high notification */
-       nc_status = lttng_notification_channel_get_next_notification(notification_channel, &notification);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK
-                       && notification
-                       && lttng_condition_get_type(lttng_notification_get_condition(notification)) == LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH,
+       do {
+               nc_status = lttng_notification_channel_get_next_notification(
+                               notification_channel, &notification);
+       } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED);
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification &&
+                                       lttng_condition_get_type(lttng_notification_get_condition(
+                                                       notification)) ==
+                                                       LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH,
                        "High notification received after intermediary communication");
        lttng_notification_destroy(notification);
        notification = NULL;
@@ -612,16 +650,24 @@ void test_notification_channel(const char *session_name, const char *channel_nam
         * waiting for consumption.
         */
 
-       nc_status = lttng_notification_channel_unsubscribe(notification_channel, low_condition);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK, "Unsubscribe with pending notification");
+       nc_status = lttng_notification_channel_unsubscribe(
+                       notification_channel, low_condition);
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK,
+                       "Unsubscribe with pending notification");
 
-       nc_status = lttng_notification_channel_subscribe(notification_channel, low_condition);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK, "subscribe with pending notification");
+       nc_status = lttng_notification_channel_subscribe(
+                       notification_channel, low_condition);
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK,
+                       "Subscribe with pending notification");
 
-       nc_status = lttng_notification_channel_get_next_notification(notification_channel, &notification);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK
-                       && notification
-                       && lttng_condition_get_type(lttng_notification_get_condition(notification)) == LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW,
+       do {
+               nc_status = lttng_notification_channel_get_next_notification(
+                               notification_channel, &notification);
+       } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED);
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification &&
+                                       lttng_condition_get_type(lttng_notification_get_condition(
+                                                       notification)) ==
+                                                       LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW,
                        "Low notification received after intermediary communication");
        lttng_notification_destroy(notification);
        notification = NULL;
@@ -631,9 +677,14 @@ void test_notification_channel(const char *session_name, const char *channel_nam
        resume_application();
        lttng_start_tracing(session_name);
 
-       nc_status = lttng_notification_channel_get_next_notification(notification_channel, &notification);
+       do {
+               nc_status = lttng_notification_channel_get_next_notification(
+                               notification_channel, &notification);
+       } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED);
        ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification &&
-                       lttng_condition_get_type(lttng_notification_get_condition(notification)) == LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH,
+                                       lttng_condition_get_type(lttng_notification_get_condition(
+                                                       notification)) ==
+                                                       LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH,
                        "High notification received after intermediary communication");
        lttng_notification_destroy(notification);
        notification = NULL;
@@ -643,9 +694,14 @@ void test_notification_channel(const char *session_name, const char *channel_nam
        resume_consumer(argv);
        wait_data_pending(session_name);
 
-       nc_status = lttng_notification_channel_get_next_notification(notification_channel, &notification);
+       do {
+               nc_status = lttng_notification_channel_get_next_notification(
+                               notification_channel, &notification);
+       } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED);
        ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification &&
-                       lttng_condition_get_type(lttng_notification_get_condition(notification)) == LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW,
+                                       lttng_condition_get_type(lttng_notification_get_condition(
+                                                       notification)) ==
+                                                       LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW,
                        "Low notification received after re-subscription");
        lttng_notification_destroy(notification);
        notification = NULL;
@@ -655,23 +711,34 @@ void test_notification_channel(const char *session_name, const char *channel_nam
        /* Stop consumer to force a high notification */
        lttng_start_tracing(session_name);
 
-       nc_status = lttng_notification_channel_get_next_notification(notification_channel, &notification);
+       do {
+               nc_status = lttng_notification_channel_get_next_notification(
+                               notification_channel, &notification);
+       } while (nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_INTERRUPTED);
        ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification &&
-                       lttng_condition_get_type(lttng_notification_get_condition(notification)) == LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH,
+                                       lttng_condition_get_type(lttng_notification_get_condition(
+                                                       notification)) ==
+                                                       LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH,
                        "High notification");
        lttng_notification_destroy(notification);
        notification = NULL;
 
-       /* Resume consumer to allow event consumption */
        suspend_application();
+
+       /* Resume consumer to allow event consumption */
        lttng_stop_tracing_no_wait(session_name);
        resume_consumer(argv);
        wait_data_pending(session_name);
 
-       nc_status = lttng_notification_channel_unsubscribe(notification_channel, low_condition);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK, "Unsubscribe low condition with pending notification");
-       nc_status = lttng_notification_channel_unsubscribe(notification_channel, high_condition);
-       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK, "Unsubscribe high condition with pending notification");
+       nc_status = lttng_notification_channel_unsubscribe(
+                       notification_channel, low_condition);
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK,
+                       "Unsubscribe low condition with pending notification");
+
+       nc_status = lttng_notification_channel_unsubscribe(
+                       notification_channel, high_condition);
+       ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK,
+                       "Unsubscribe high condition with pending notification");
 
 end:
        lttng_notification_channel_destroy(notification_channel);
@@ -719,6 +786,12 @@ int main(int argc, const char *argv[])
                goto error;
        }
 
+       /*
+        * Test cases are responsible for resuming the app when needed and
+        * making sure it's suspended when returning.
+        */
+       suspend_application();
+
        diag("Test trigger for domain %s with buffer_usage_low condition", domain_type_string);
        test_triggers_buffer_usage_condition(session_name, channel_name, domain_type, LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW);
        diag("Test trigger for domain %s with buffer_usage_high condition", domain_type_string);
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