X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=tests%2Fregression%2Ftools%2Fnotification%2Fnotification.c;h=de8734603fd309ba8d42db1cffac97015b5cd3e9;hp=5de09e2016e1ed33947780d11ab344d78fd76780;hb=ff2b03c86766eba10a9fdee2ebeedf801efe83a3;hpb=eff748d0c31ea521364b356e0bf61b7167298c84 diff --git a/tests/regression/tools/notification/notification.c b/tests/regression/tools/notification/notification.c index 5de09e201..de8734603 100644 --- a/tests/regression/tools/notification/notification.c +++ b/tests/regression/tools/notification/notification.c @@ -35,6 +35,9 @@ #include #include #include +#include +#include +#include #include #include @@ -51,8 +54,37 @@ #include #define NUM_TESTS 104 + int nb_args = 0; int named_pipe_args_start = 0; +pid_t app_pid = -1; +const char *app_state_file = NULL; + +static +void wait_on_file(const char *path, bool file_exist) +{ + if (!path) { + return; + } + for (;;) { + int ret; + struct stat buf; + + ret = stat(path, &buf); + if (ret == -1 && errno == ENOENT) { + if (file_exist) { + (void) poll(NULL, 0, 10); /* 10 ms delay */ + continue; /* retry */ + } + break; /* File does not exist */ + } + if (ret) { + perror("stat"); + exit(EXIT_FAILURE); + } + break; /* found */ + } +} int write_pipe(const char *path, uint8_t data) { @@ -103,6 +135,64 @@ int resume_consumer(const char **argv) return ret; } +int suspend_application() +{ + int ret; + struct stat buf; + + if (!stat(app_state_file, &buf)) { + fail("App is already in a suspended state."); + ret = -1; + goto error; + } + + /* + * Send SIGUSR1 to application instructing it to bypass tracepoint. + */ + ret = kill(app_pid, SIGUSR1); + if (ret) { + fail("SIGUSR1 failed. errno %d", errno); + ret = -1; + goto error; + } + + wait_on_file(app_state_file, true); + +error: + return ret; + +} + +int resume_application() +{ + int ret; + struct stat buf; + + ret = stat(app_state_file, &buf); + if (ret == -1 && errno == ENOENT) { + fail("State file does not exist"); + goto error; + } + if (ret) { + perror("stat"); + goto error; + } + + ret = kill(app_pid, SIGUSR1); + if (ret) { + fail("SIGUSR1 failed. errno %d", errno); + ret = -1; + goto error; + } + + wait_on_file(app_state_file, false); + +error: + return ret; + +} + + void test_triggers_buffer_usage_condition(const char *session_name, const char *channel_name, enum lttng_domain_type domain_type, @@ -284,7 +374,18 @@ end: lttng_action_destroy(action); } -void test_notification_channel(const char *session_name, const char *channel_name, enum lttng_domain_type domain_type, const char **argv) +static +void wait_data_pending(const char *session_name) +{ + int ret; + + do { + ret = lttng_data_pending(session_name); + assert(ret >= 0); + } 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) { int ret = 0; enum lttng_condition_status condition_status; @@ -485,8 +586,8 @@ void test_notification_channel(const char *session_name, const char *channel_nam ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_ALREADY_SUBSCRIBED, "Subscribe to a condition for which subscription was already done"); /* Wait for notification to happen */ - lttng_start_tracing(session_name); stop_consumer(argv); + lttng_start_tracing(session_name); /* Wait for high notification */ nc_status = lttng_notification_channel_get_next_notification(notification_channel, ¬ification); @@ -497,8 +598,10 @@ void test_notification_channel(const char *session_name, const char *channel_nam lttng_notification_destroy(notification); notification = NULL; + suspend_application(); + lttng_stop_tracing_no_wait(session_name); resume_consumer(argv); - lttng_stop_tracing(session_name); + wait_data_pending(session_name); /* * Test that communication still work even if there is notification @@ -520,8 +623,9 @@ void test_notification_channel(const char *session_name, const char *channel_nam notification = NULL; /* Stop consumer to force a high notification */ - lttng_start_tracing(session_name); stop_consumer(argv); + resume_application(); + lttng_start_tracing(session_name); nc_status = lttng_notification_channel_get_next_notification(notification_channel, ¬ification); ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification && @@ -530,9 +634,10 @@ void test_notification_channel(const char *session_name, const char *channel_nam lttng_notification_destroy(notification); notification = NULL; - /* Resume consumer to allow event consumption */ + suspend_application(); + lttng_stop_tracing_no_wait(session_name); resume_consumer(argv); - lttng_stop_tracing(session_name); + wait_data_pending(session_name); nc_status = lttng_notification_channel_get_next_notification(notification_channel, ¬ification); ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification && @@ -541,9 +646,10 @@ void test_notification_channel(const char *session_name, const char *channel_nam lttng_notification_destroy(notification); notification = NULL; + stop_consumer(argv); + resume_application(); /* Stop consumer to force a high notification */ lttng_start_tracing(session_name); - stop_consumer(argv); nc_status = lttng_notification_channel_get_next_notification(notification_channel, ¬ification); ok(nc_status == LTTNG_NOTIFICATION_CHANNEL_STATUS_OK && notification && @@ -553,8 +659,10 @@ void test_notification_channel(const char *session_name, const char *channel_nam notification = NULL; /* Resume consumer to allow event consumption */ + suspend_application(); + lttng_stop_tracing_no_wait(session_name); resume_consumer(argv); - lttng_stop_tracing(session_name); + 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"); @@ -580,19 +688,21 @@ int main(int argc, const char *argv[]) plan_tests(NUM_TESTS); - /* Argument 4 and upward are named pipe location for consumerd control */ - named_pipe_args_start = 4; + /* Argument 6 and upward are named pipe location for consumerd control */ + named_pipe_args_start = 6; - if (argc < 5) { + if (argc < 7) { fail("Missing parameter for tests to run %d", argc); goto error; } nb_args = argc; - session_name = argv[1]; - channel_name = argv[2]; - domain_type_string= argv[3]; + domain_type_string = argv[1]; + session_name = argv[2]; + channel_name = argv[3]; + app_pid = (pid_t) atoi(argv[4]); + app_state_file = argv[5]; if (!strcmp("LTTNG_DOMAIN_UST", domain_type_string)) { domain_type = LTTNG_DOMAIN_UST;