X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Ftracker.c;fp=src%2Fcommon%2Ftracker.c;h=f8a4fba0f3944b4112b2680934a7f91de5bc2a8f;hp=0000000000000000000000000000000000000000;hb=2d97a0067600335f07eecb2c1d9ba68fc164583e;hpb=0dda67289b8a86fd3f117d644f00f2985d399208

diff --git a/src/common/tracker.c b/src/common/tracker.c
new file mode 100644
index 000000000..f8a4fba0f
--- /dev/null
+++ b/src/common/tracker.c
@@ -0,0 +1,223 @@
+/*
+ * Copyright (C) 2019 - Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License, version 2.1 only,
+ * as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <assert.h>
+#include <common/defaults.h>
+#include <common/error.h>
+#include <common/macros.h>
+#include <common/sessiond-comm/sessiond-comm.h>
+#include <common/uri.h>
+#include <lttng/tracker-internal.h>
+#include <stdio.h>
+#include <time.h>
+
+struct lttng_tracker_id *lttng_tracker_id_create(void)
+{
+	struct lttng_tracker_id *id;
+
+	id = zmalloc(sizeof(*id));
+	if (!id) {
+		goto error;
+	}
+
+	id->type = LTTNG_ID_UNKNOWN;
+	id->string = NULL;
+	id->value = -1;
+	return id;
+error:
+	lttng_tracker_id_destroy(id);
+	return NULL;
+}
+
+enum lttng_tracker_id_status lttng_tracker_id_set_value(
+		struct lttng_tracker_id *id, int value)
+{
+	assert(id);
+
+	if (value < 0) {
+		return LTTNG_TRACKER_ID_STATUS_INVALID;
+	}
+
+	id->type = LTTNG_ID_VALUE;
+	id->value = value;
+	return LTTNG_TRACKER_ID_STATUS_OK;
+}
+
+enum lttng_tracker_id_status lttng_tracker_id_set_string(
+		struct lttng_tracker_id *id, const char *value)
+{
+	assert(id);
+	assert(value);
+
+	id->type = LTTNG_ID_STRING;
+	id->string = strdup(value);
+	if (id->string == NULL) {
+		/* No memory left */
+		goto error;
+	}
+
+	return LTTNG_TRACKER_ID_STATUS_OK;
+error:
+	return LTTNG_TRACKER_ID_STATUS_INVALID;
+}
+
+enum lttng_tracker_id_status lttng_tracker_id_set_all(
+		struct lttng_tracker_id *id)
+{
+	assert(id);
+
+	id->type = LTTNG_ID_ALL;
+
+	return LTTNG_TRACKER_ID_STATUS_OK;
+}
+
+void lttng_tracker_id_destroy(struct lttng_tracker_id *id)
+{
+	if (id == NULL) {
+		return;
+	}
+
+	if (id->string != NULL) {
+		free(id->string);
+	}
+
+	free(id);
+}
+
+void lttng_tracker_ids_destroy(struct lttng_tracker_id **ids, size_t nr_ids)
+{
+	if (ids == NULL) {
+		return;
+	}
+
+	for (int i = 0; i < nr_ids; i++) {
+		lttng_tracker_id_destroy(ids[i]);
+	}
+}
+
+enum lttng_tracker_id_type lttng_tracker_id_get_type(
+		const struct lttng_tracker_id *id)
+{
+	assert(id);
+	return id->type;
+}
+
+enum lttng_tracker_id_status lttng_tracker_id_get_value(
+		const struct lttng_tracker_id *id, int *value)
+{
+	assert(id);
+	if (id->type == LTTNG_ID_UNKNOWN) {
+		return LTTNG_TRACKER_ID_STATUS_UNSET;
+	}
+
+	if (id->type != LTTNG_ID_VALUE) {
+		return LTTNG_TRACKER_ID_STATUS_INVALID;
+	}
+
+	*value = id->value;
+	return LTTNG_TRACKER_ID_STATUS_OK;
+}
+
+bool lttng_tracker_id_is_equal(const struct lttng_tracker_id *left,
+		const struct lttng_tracker_id *right)
+{
+	if (left->type != right->type) {
+		return 0;
+	}
+
+	switch (left->type) {
+	case LTTNG_ID_ALL:
+		return 1;
+	case LTTNG_ID_VALUE:
+		if (left->value != right->value) {
+			return 0;
+		}
+		break;
+	case LTTNG_ID_STRING:
+		if (strcmp(left->string, right->string) != 0) {
+			return 0;
+		}
+		break;
+	default:
+		/*
+		 * Normally this should return true, but comparing unset tracker
+		 * id is "invalid".
+		 */
+		return 0;
+	}
+	return 1;
+}
+
+struct lttng_tracker_id *lttng_tracker_id_copy(
+		const struct lttng_tracker_id *orig)
+{
+	struct lttng_tracker_id *copy = NULL;
+	enum lttng_tracker_id_status status;
+
+	copy = lttng_tracker_id_create();
+	if (copy == NULL) {
+		goto error;
+	}
+
+	switch (orig->type) {
+	case LTTNG_ID_ALL:
+		status = lttng_tracker_id_set_all(copy);
+		break;
+	case LTTNG_ID_VALUE:
+		status = lttng_tracker_id_set_value(copy, orig->value);
+		if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+			goto error;
+		}
+		break;
+	case LTTNG_ID_STRING:
+		status = lttng_tracker_id_set_string(copy, orig->string);
+		if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+			goto error;
+		}
+		break;
+	default:
+		status = LTTNG_TRACKER_ID_STATUS_OK;
+		break;
+	}
+
+	if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+		goto error;
+	}
+
+	return copy;
+error:
+	lttng_tracker_id_destroy(copy);
+	return NULL;
+}
+
+enum lttng_tracker_id_status lttng_tracker_id_get_string(
+		const struct lttng_tracker_id *id, const char **value)
+{
+	assert(id);
+	if (id->type == LTTNG_ID_UNKNOWN) {
+		*value = NULL;
+		return LTTNG_TRACKER_ID_STATUS_UNSET;
+	}
+
+	if (id->type != LTTNG_ID_STRING) {
+		*value = NULL;
+		return LTTNG_TRACKER_ID_STATUS_INVALID;
+	}
+
+	*value = id->string;
+	return LTTNG_TRACKER_ID_STATUS_OK;
+}