X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;ds=sidebyside;f=src%2Flib%2Flttng-ctl%2Fevent.cpp;fp=src%2Flib%2Flttng-ctl%2Fevent.cpp;h=3a6bf22b2ec90987014acd5f085230d04fdf638e;hb=4bd69c5f1161cd065f487da0f4c1aa03a73c47e4;hp=0000000000000000000000000000000000000000;hpb=657d1bf105996bf8f6e13af697fb1112afa61b28;p=lttng-tools.git

diff --git a/src/lib/lttng-ctl/event.cpp b/src/lib/lttng-ctl/event.cpp
new file mode 100644
index 000000000..3a6bf22b2
--- /dev/null
+++ b/src/lib/lttng-ctl/event.cpp
@@ -0,0 +1,197 @@
+/*
+ * event.c
+ *
+ * Linux Trace Toolkit Control Library
+ *
+ * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#define _LGPL_SOURCE
+#include <stddef.h>
+
+#include <common/error.h>
+#include <common/sessiond-comm/sessiond-comm.h>
+#include <lttng/event-internal.h>
+#include <lttng/event.h>
+#include <lttng/lttng-error.h>
+#include <lttng/userspace-probe-internal.h>
+
+struct lttng_event *lttng_event_create(void)
+{
+	struct lttng_event *event;
+	struct lttng_event_extended *event_extended;
+
+	event = (lttng_event *) zmalloc(sizeof(*event));
+	if (!event) {
+		PERROR("Error allocating event structure");
+		goto end;
+	}
+
+	event_extended = (lttng_event_extended *) zmalloc(sizeof(*event_extended));
+	if (!event_extended) {
+		PERROR("Error allocating event extended structure");
+		goto error;
+	}
+	event->extended.ptr = event_extended;
+end:
+	return event;
+error:
+	free(event);
+	event = NULL;
+	goto end;
+}
+
+void lttng_event_destroy(struct lttng_event *event)
+{
+	struct lttng_event_extended *event_extended;
+
+	if (!event) {
+		return;
+	}
+
+	event_extended = (struct lttng_event_extended *) event->extended.ptr;
+
+	if (event_extended) {
+		if (event_extended->probe_location) {
+			lttng_userspace_probe_location_destroy(
+				event_extended->probe_location);
+		}
+		free(event_extended);
+	}
+	free(event);
+}
+
+int lttng_event_get_filter_expression(struct lttng_event *event,
+	const char **filter_expression)
+{
+	int ret = 0;
+	struct lttng_event_extended *event_extended;
+
+	if (!event || !filter_expression) {
+		ret = -LTTNG_ERR_INVALID;
+		goto end;
+	}
+
+	event_extended = (struct lttng_event_extended *) event->extended.ptr;
+	if (!event_extended) {
+		/*
+		 * This can happen since the lttng_event structure is
+		 * used for other tasks where this pointer is never set.
+		 */
+		*filter_expression = NULL;
+		goto end;
+	}
+
+	*filter_expression = event_extended->filter_expression;
+end:
+	return ret;
+}
+
+int lttng_event_get_exclusion_name_count(struct lttng_event *event)
+{
+	int ret = 0;
+	struct lttng_event_extended *event_extended;
+
+	if (!event) {
+		ret = -LTTNG_ERR_INVALID;
+		goto end;
+	}
+
+	event_extended = (struct lttng_event_extended *) event->extended.ptr;
+	if (!event_extended) {
+		/*
+		 * This can happen since the lttng_event structure is
+		 * used for other tasks where this pointer is never set.
+		 */
+		goto end;
+	}
+
+	if (event_extended->exclusions.count > INT_MAX) {
+		ret = -LTTNG_ERR_OVERFLOW;
+		goto end;
+	}
+	ret = (int) event_extended->exclusions.count;
+end:
+	return ret;
+}
+
+int lttng_event_get_exclusion_name(struct lttng_event *event,
+		size_t index, const char **exclusion_name)
+{
+	int ret = 0;
+	struct lttng_event_extended *event_extended;
+
+	if (!event || !exclusion_name) {
+		ret = -LTTNG_ERR_INVALID;
+		goto end;
+	}
+
+	if (index > UINT_MAX) {
+		ret = -LTTNG_ERR_OVERFLOW;
+		goto end;
+	}
+
+	event_extended = (struct lttng_event_extended *) event->extended.ptr;
+	if (!event_extended) {
+		/*
+		 * This can happen since the lttng_event structure is
+		 * used for other tasks where this pointer is never set.
+		 */
+		ret = -LTTNG_ERR_INVALID;
+		goto end;
+	}
+
+	if (index >= event_extended->exclusions.count) {
+		ret = -LTTNG_ERR_INVALID;
+		goto end;
+	}
+
+	*exclusion_name = event_extended->exclusions.strings +
+		(index * LTTNG_SYMBOL_NAME_LEN);
+end:
+	return ret;
+}
+
+const struct lttng_userspace_probe_location *
+lttng_event_get_userspace_probe_location(const struct lttng_event *event)
+{
+	struct lttng_userspace_probe_location *probe_location = NULL;
+	struct lttng_event_extended *event_extended;
+
+	if (!event) {
+		goto end;
+	}
+
+	event_extended = (struct lttng_event_extended *) event->extended.ptr;
+	if (!event_extended) {
+		goto end;
+	}
+	probe_location = event_extended->probe_location;
+end:
+	return probe_location;
+}
+
+int lttng_event_set_userspace_probe_location(struct lttng_event *event,
+		struct lttng_userspace_probe_location *probe_location)
+{
+	int ret = 0;
+	struct lttng_event_extended *event_extended;
+
+	if (!event || !probe_location) {
+		ret = -LTTNG_ERR_INVALID;
+		goto end;
+	}
+
+	event_extended = (struct lttng_event_extended *) event->extended.ptr;
+	LTTNG_ASSERT(event_extended);
+	if (event_extended->probe_location) {
+		lttng_userspace_probe_location_destroy(
+			event_extended->probe_location);
+	}
+	event_extended->probe_location = probe_location;
+end:
+	return ret;
+}