--- /dev/null
+/*
+ * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@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 <lttng/condition/condition-internal.h>
+#include <lttng/condition/session-consumed-size-internal.h>
+#include <common/macros.h>
+#include <common/error.h>
+#include <assert.h>
+#include <math.h>
+#include <float.h>
+#include <time.h>
+
+#define IS_CONSUMED_SIZE_CONDITION(condition) ( \
+ lttng_condition_get_type(condition) == LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE \
+ )
+
+#define IS_CONSUMED_SIZE_EVALUATION(evaluation) ( \
+ lttng_evaluation_get_type(evaluation) == LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE \
+ )
+
+static
+void lttng_condition_session_consumed_size_destroy(struct lttng_condition *condition)
+{
+ struct lttng_condition_session_consumed_size *consumed_size;
+
+ consumed_size = container_of(condition,
+ struct lttng_condition_session_consumed_size, parent);
+
+ free(consumed_size->session_name);
+ free(consumed_size);
+}
+
+static
+bool lttng_condition_session_consumed_size_validate(
+ const struct lttng_condition *condition)
+{
+ bool valid = false;
+ struct lttng_condition_session_consumed_size *consumed;
+
+ if (!condition) {
+ goto end;
+ }
+
+ consumed = container_of(condition, struct lttng_condition_session_consumed_size,
+ parent);
+ if (!consumed->session_name) {
+ ERR("Invalid buffer condition: a target session name must be set.");
+ goto end;
+ }
+ if (!consumed->consumed_threshold_bytes.set) {
+ ERR("Invalid session condition: a threshold must be set.");
+ goto end;
+ }
+
+ valid = true;
+end:
+ return valid;
+}
+
+static
+ssize_t lttng_condition_session_consumed_size_serialize(
+ const struct lttng_condition *condition, char *buf)
+{
+ struct lttng_condition_session_consumed_size *consumed;
+ ssize_t ret, size;
+ size_t session_name_len;
+
+ if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition)) {
+ ret = -1;
+ goto end;
+ }
+
+ DBG("Serializing session consumed condition");
+ consumed = container_of(condition, struct lttng_condition_session_consumed_size,
+ parent);
+ size = sizeof(struct lttng_condition_session_consumed_size_comm);
+ session_name_len = strlen(consumed->session_name) + 1;
+ if (session_name_len > LTTNG_NAME_MAX) {
+ ret = -1;
+ goto end;
+ }
+ size += session_name_len;
+ if (buf) {
+ struct lttng_condition_session_consumed_size_comm consumed_comm = {
+ .consumed_threshold_bytes = consumed->consumed_threshold_bytes.value,
+ .session_name_len = session_name_len,
+ };
+
+ memcpy(buf, &consumed_comm, sizeof(consumed_comm));
+ buf += sizeof(consumed_comm);
+ memcpy(buf, consumed->session_name, session_name_len);
+ buf += session_name_len;
+ }
+ ret = size;
+end:
+ return ret;
+}
+
+static
+bool lttng_condition_session_consumed_size_is_equal(const struct lttng_condition *_a,
+ const struct lttng_condition *_b)
+{
+ bool is_equal = false;
+ struct lttng_condition_session_consumed_size *a, *b;
+
+ a = container_of(_a, struct lttng_condition_session_consumed_size, parent);
+ b = container_of(_b, struct lttng_condition_session_consumed_size, parent);
+
+ if (a->consumed_threshold_bytes.set && b->consumed_threshold_bytes.set) {
+ uint64_t a_value, b_value;
+
+ a_value = a->consumed_threshold_bytes.value;
+ b_value = b->consumed_threshold_bytes.value;
+ if (a_value != b_value) {
+ goto end;
+ }
+ }
+
+ if ((a->session_name && !b->session_name) ||
+ (!a->session_name && b->session_name)) {
+ goto end;
+ }
+
+ is_equal = true;
+end:
+ return is_equal;
+}
+
+struct lttng_condition *lttng_condition_session_consumed_size_create(void)
+{
+ struct lttng_condition_session_consumed_size *condition;
+
+ condition = zmalloc(sizeof(struct lttng_condition_session_consumed_size));
+ if (!condition) {
+ return NULL;
+ }
+
+ lttng_condition_init(&condition->parent, LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE);
+ condition->parent.validate = lttng_condition_session_consumed_size_validate;
+ condition->parent.serialize = lttng_condition_session_consumed_size_serialize;
+ condition->parent.equal = lttng_condition_session_consumed_size_is_equal;
+ condition->parent.destroy = lttng_condition_session_consumed_size_destroy;
+ return &condition->parent;
+}
+
+static
+ssize_t init_condition_from_buffer(struct lttng_condition *condition,
+ const struct lttng_buffer_view *src_view)
+{
+ ssize_t ret, condition_size;
+ enum lttng_condition_status status;
+ const struct lttng_condition_session_consumed_size_comm *condition_comm;
+ const char *session_name;
+ struct lttng_buffer_view names_view;
+
+ if (src_view->size < sizeof(*condition_comm)) {
+ ERR("Failed to initialize from malformed condition buffer: buffer too short to contain header");
+ ret = -1;
+ goto end;
+ }
+
+ condition_comm = (const struct lttng_condition_session_consumed_size_comm *) src_view->data;
+ names_view = lttng_buffer_view_from_view(src_view,
+ sizeof(*condition_comm), -1);
+
+ if (condition_comm->session_name_len > LTTNG_NAME_MAX) {
+ ERR("Failed to initialize from malformed condition buffer: name exceeds LTTNG_MAX_NAME");
+ ret = -1;
+ goto end;
+ }
+
+ if (names_view.size < condition_comm->session_name_len) {
+ ERR("Failed to initialize from malformed condition buffer: buffer too short to contain element names");
+ ret = -1;
+ goto end;
+ }
+
+ status = lttng_condition_session_consumed_size_set_threshold(condition,
+ condition_comm->consumed_threshold_bytes);
+ if (status != LTTNG_CONDITION_STATUS_OK) {
+ ERR("Failed to initialize session consumed condition threshold");
+ ret = -1;
+ goto end;
+ }
+
+ session_name = names_view.data;
+ if (*(session_name + condition_comm->session_name_len - 1) != '\0') {
+ ERR("Malformed session name encountered in condition buffer");
+ ret = -1;
+ goto end;
+ }
+
+ status = lttng_condition_session_consumed_size_set_session_name(condition,
+ session_name);
+ if (status != LTTNG_CONDITION_STATUS_OK) {
+ ERR("Failed to set buffer consumed session name");
+ ret = -1;
+ goto end;
+ }
+
+ if (!lttng_condition_validate(condition)) {
+ ret = -1;
+ goto end;
+ }
+
+ condition_size = sizeof(*condition_comm) +
+ (ssize_t) condition_comm->session_name_len;
+ ret = condition_size;
+end:
+ return ret;
+}
+
+LTTNG_HIDDEN
+ssize_t lttng_condition_session_consumed_size_create_from_buffer(
+ const struct lttng_buffer_view *view,
+ struct lttng_condition **_condition)
+{
+ ssize_t ret;
+ struct lttng_condition *condition =
+ lttng_condition_session_consumed_size_create();
+
+ if (!_condition || !condition) {
+ ret = -1;
+ goto error;
+ }
+
+ ret = init_condition_from_buffer(condition, view);
+ if (ret < 0) {
+ goto error;
+ }
+
+ *_condition = condition;
+ return ret;
+error:
+ lttng_condition_destroy(condition);
+ return ret;
+}
+
+static
+struct lttng_evaluation *create_evaluation_from_buffer(
+ enum lttng_condition_type type,
+ const struct lttng_buffer_view *view)
+{
+ const struct lttng_evaluation_session_consumed_size_comm *comm =
+ (const struct lttng_evaluation_session_consumed_size_comm *) view->data;
+ struct lttng_evaluation *evaluation = NULL;
+
+ if (view->size < sizeof(*comm)) {
+ goto end;
+ }
+
+ evaluation = lttng_evaluation_session_consumed_size_create(type,
+ comm->session_consumed);
+end:
+ return evaluation;
+}
+
+LTTNG_HIDDEN
+ssize_t lttng_evaluation_session_consumed_size_create_from_buffer(
+ const struct lttng_buffer_view *view,
+ struct lttng_evaluation **_evaluation)
+{
+ ssize_t ret;
+ struct lttng_evaluation *evaluation = NULL;
+
+ if (!_evaluation) {
+ ret = -1;
+ goto error;
+ }
+
+ evaluation = create_evaluation_from_buffer(
+ LTTNG_CONDITION_TYPE_SESSION_CONSUMED_SIZE, view);
+ if (!evaluation) {
+ ret = -1;
+ goto error;
+ }
+
+ *_evaluation = evaluation;
+ ret = sizeof(struct lttng_evaluation_session_consumed_size_comm);
+ return ret;
+error:
+ lttng_evaluation_destroy(evaluation);
+ return ret;
+}
+
+enum lttng_condition_status
+lttng_condition_session_consumed_size_get_threshold(
+ const struct lttng_condition *condition,
+ uint64_t *consumed_threshold_bytes)
+{
+ struct lttng_condition_session_consumed_size *consumed;
+ enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK;
+
+ if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || !consumed_threshold_bytes) {
+ status = LTTNG_CONDITION_STATUS_INVALID;
+ goto end;
+ }
+
+ consumed = container_of(condition, struct lttng_condition_session_consumed_size,
+ parent);
+ if (!consumed->consumed_threshold_bytes.set) {
+ status = LTTNG_CONDITION_STATUS_UNSET;
+ goto end;
+ }
+ *consumed_threshold_bytes = consumed->consumed_threshold_bytes.value;
+end:
+ return status;
+}
+
+enum lttng_condition_status
+lttng_condition_session_consumed_size_set_threshold(
+ struct lttng_condition *condition, uint64_t consumed_threshold_bytes)
+{
+ struct lttng_condition_session_consumed_size *consumed;
+ enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK;
+
+ if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition)) {
+ status = LTTNG_CONDITION_STATUS_INVALID;
+ goto end;
+ }
+
+ consumed = container_of(condition, struct lttng_condition_session_consumed_size,
+ parent);
+ consumed->consumed_threshold_bytes.set = true;
+ consumed->consumed_threshold_bytes.value = consumed_threshold_bytes;
+end:
+ return status;
+}
+
+enum lttng_condition_status
+lttng_condition_session_consumed_size_get_session_name(
+ const struct lttng_condition *condition,
+ const char **session_name)
+{
+ struct lttng_condition_session_consumed_size *consumed;
+ enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK;
+
+ if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) || !session_name) {
+ status = LTTNG_CONDITION_STATUS_INVALID;
+ goto end;
+ }
+
+ consumed = container_of(condition, struct lttng_condition_session_consumed_size,
+ parent);
+ if (!consumed->session_name) {
+ status = LTTNG_CONDITION_STATUS_UNSET;
+ goto end;
+ }
+ *session_name = consumed->session_name;
+end:
+ return status;
+}
+
+enum lttng_condition_status
+lttng_condition_session_consumed_size_set_session_name(
+ struct lttng_condition *condition, const char *session_name)
+{
+ char *session_name_copy;
+ struct lttng_condition_session_consumed_size *consumed;
+ enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK;
+
+ if (!condition || !IS_CONSUMED_SIZE_CONDITION(condition) ||
+ !session_name || strlen(session_name) == 0) {
+ status = LTTNG_CONDITION_STATUS_INVALID;
+ goto end;
+ }
+
+ consumed = container_of(condition, struct lttng_condition_session_consumed_size,
+ parent);
+ session_name_copy = strdup(session_name);
+ if (!session_name_copy) {
+ status = LTTNG_CONDITION_STATUS_ERROR;
+ goto end;
+ }
+
+ if (consumed->session_name) {
+ free(consumed->session_name);
+ }
+ consumed->session_name = session_name_copy;
+end:
+ return status;
+}
+
+static
+ssize_t lttng_evaluation_session_consumed_size_serialize(
+ struct lttng_evaluation *evaluation, char *buf)
+{
+ ssize_t ret;
+ struct lttng_evaluation_session_consumed_size *consumed;
+
+ consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size,
+ parent);
+ if (buf) {
+ struct lttng_evaluation_session_consumed_size_comm comm = {
+ .session_consumed = consumed->session_consumed,
+ };
+
+ memcpy(buf, &comm, sizeof(comm));
+ }
+
+ ret = sizeof(struct lttng_evaluation_session_consumed_size_comm);
+ return ret;
+}
+
+static
+void lttng_evaluation_session_consumed_size_destroy(
+ struct lttng_evaluation *evaluation)
+{
+ struct lttng_evaluation_session_consumed_size *consumed;
+
+ consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size,
+ parent);
+ free(consumed);
+}
+
+LTTNG_HIDDEN
+struct lttng_evaluation *lttng_evaluation_session_consumed_size_create(
+ enum lttng_condition_type type, uint64_t consumed)
+{
+ struct lttng_evaluation_session_consumed_size *consumed_eval;
+
+ consumed_eval = zmalloc(sizeof(struct lttng_evaluation_session_consumed_size));
+ if (!consumed_eval) {
+ goto end;
+ }
+
+ consumed_eval->parent.type = type;
+ consumed_eval->session_consumed = consumed;
+ consumed_eval->parent.serialize = lttng_evaluation_session_consumed_size_serialize;
+ consumed_eval->parent.destroy = lttng_evaluation_session_consumed_size_destroy;
+end:
+ return &consumed_eval->parent;
+}
+
+enum lttng_evaluation_status
+lttng_evaluation_session_consumed_size_get_consumed_size(
+ const struct lttng_evaluation *evaluation,
+ uint64_t *session_consumed)
+{
+ struct lttng_evaluation_session_consumed_size *consumed;
+ enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK;
+
+ if (!evaluation || !IS_CONSUMED_SIZE_EVALUATION(evaluation) ||
+ !session_consumed) {
+ status = LTTNG_EVALUATION_STATUS_INVALID;
+ goto end;
+ }
+
+ consumed = container_of(evaluation, struct lttng_evaluation_session_consumed_size,
+ parent);
+ *session_consumed = consumed->session_consumed;
+end:
+ return status;
+}
projects / lttng-tools.git / blobdiff