--- /dev/null
+/*
+ * stream.c
+ *
+ * Babeltrace trace IR - Stream
+ *
+ * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#define BT_LOG_TAG "STREAM"
+#include <babeltrace/lib-logging-internal.h>
+
+#include <babeltrace/assert-pre-internal.h>
+#include <babeltrace/trace-ir/stream.h>
+#include <babeltrace/trace-ir/stream-internal.h>
+#include <babeltrace/trace-ir/stream-class.h>
+#include <babeltrace/trace-ir/stream-class-internal.h>
+#include <babeltrace/trace-ir/trace.h>
+#include <babeltrace/trace-ir/trace-internal.h>
+#include <babeltrace/trace-ir/packet-internal.h>
+#include <babeltrace/ref.h>
+#include <babeltrace/compiler-internal.h>
+#include <babeltrace/align-internal.h>
+#include <babeltrace/assert-internal.h>
+#include <babeltrace/property-internal.h>
+#include <inttypes.h>
+#include <unistd.h>
+
+#define BT_ASSERT_PRE_STREAM_HOT(_stream) \
+ BT_ASSERT_PRE_HOT((_stream), "Stream", ": %!+s", (_stream))
+
+static
+void destroy_stream(struct bt_object *obj)
+{
+ struct bt_stream *stream = (void *) obj;
+
+ BT_LIB_LOGD("Destroying stream object: %!+s", stream);
+
+ if (stream->name.str) {
+ g_string_free(stream->name.str, TRUE);
+ }
+
+ bt_object_pool_finalize(&stream->packet_pool);
+ g_free(stream);
+}
+
+static
+void bt_stream_free_packet(struct bt_packet *packet, struct bt_stream *stream)
+{
+ bt_packet_destroy(packet);
+}
+
+BT_ASSERT_PRE_FUNC
+static inline
+bool stream_id_is_unique(struct bt_trace *trace,
+ struct bt_stream_class *stream_class, uint64_t id)
+{
+ uint64_t i;
+ bool is_unique = true;
+
+ for (i = 0; i < trace->streams->len; i++) {
+ struct bt_stream *stream = trace->streams->pdata[i];
+
+ if (stream->class != stream_class) {
+ continue;
+ }
+
+ if (stream->id == id) {
+ is_unique = false;
+ goto end;
+ }
+ }
+
+end:
+ return is_unique;
+}
+
+static
+struct bt_stream *create_stream_with_id(struct bt_stream_class *stream_class,
+ uint64_t id)
+{
+ int ret;
+ struct bt_stream *stream;
+ struct bt_trace *trace;
+
+ BT_ASSERT(stream_class);
+ trace = bt_stream_class_borrow_trace_inline(stream_class);
+ BT_ASSERT_PRE(stream_id_is_unique(trace, stream_class, id),
+ "Duplicate stream ID: %![trace-]+t, id=%" PRIu64, trace, id);
+ BT_ASSERT_PRE(!trace->is_static,
+ "Trace is static: %![trace-]+t", trace);
+ BT_LIB_LOGD("Creating stream object: %![trace-]+t, id=%" PRIu64,
+ trace, id);
+ stream = g_new0(struct bt_stream, 1);
+ if (!stream) {
+ BT_LOGE_STR("Failed to allocate one stream.");
+ goto error;
+ }
+
+ bt_object_init_shared_with_parent(&stream->base, destroy_stream);
+ stream->name.str = g_string_new(NULL);
+ if (!stream->name.str) {
+ BT_LOGE_STR("Failed to allocate a GString.");
+ goto error;
+ }
+
+ stream->id = id;
+ ret = bt_object_pool_initialize(&stream->packet_pool,
+ (bt_object_pool_new_object_func) bt_packet_new,
+ (bt_object_pool_destroy_object_func) bt_stream_free_packet,
+ stream);
+ if (ret) {
+ BT_LOGE("Failed to initialize packet pool: ret=%d", ret);
+ goto error;
+ }
+
+ stream->class = stream_class;
+ bt_trace_add_stream(trace, stream);
+ bt_stream_class_freeze(stream_class);
+ BT_LIB_LOGD("Created stream object: %!+s", stream);
+ goto end;
+
+error:
+ BT_PUT(stream);
+
+end:
+ return stream;
+}
+
+struct bt_stream *bt_stream_create(struct bt_stream_class *stream_class)
+{
+ uint64_t id;
+
+ BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
+ BT_ASSERT_PRE(stream_class->assigns_automatic_stream_id,
+ "Stream class does not automatically assigns stream IDs: "
+ "%![sc-]+S", stream_class);
+ id = bt_trace_get_automatic_stream_id(
+ bt_stream_class_borrow_trace_inline(stream_class),
+ stream_class);
+ return create_stream_with_id(stream_class, id);
+}
+
+struct bt_stream *bt_stream_create_with_id(struct bt_stream_class *stream_class,
+ uint64_t id)
+{
+ BT_ASSERT_PRE(!stream_class->assigns_automatic_stream_id,
+ "Stream class automatically assigns stream IDs: "
+ "%![sc-]+S", stream_class);
+ return create_stream_with_id(stream_class, id);
+}
+
+struct bt_stream_class *bt_stream_borrow_class(struct bt_stream *stream)
+{
+ BT_ASSERT_PRE_NON_NULL(stream, "Stream");
+ return stream->class;
+}
+
+const char *bt_stream_get_name(struct bt_stream *stream)
+{
+ BT_ASSERT_PRE_NON_NULL(stream, "Stream class");
+ return stream->name.value;
+}
+
+int bt_stream_set_name(struct bt_stream *stream, const char *name)
+{
+ BT_ASSERT_PRE_NON_NULL(stream, "Clock class");
+ BT_ASSERT_PRE_NON_NULL(name, "Name");
+ BT_ASSERT_PRE_STREAM_HOT(stream);
+ g_string_assign(stream->name.str, name);
+ stream->name.value = stream->name.str->str;
+ BT_LIB_LOGV("Set stream class's name: %!+S", stream);
+ return 0;
+}
+
+uint64_t bt_stream_get_id(struct bt_stream *stream)
+{
+ BT_ASSERT_PRE_NON_NULL(stream, "Stream class");
+ return stream->id;
+}
+
+BT_HIDDEN
+void _bt_stream_freeze(struct bt_stream *stream)
+{
+ /* The field types and default clock class are already frozen */
+ BT_ASSERT(stream);
+ BT_LIB_LOGD("Freezing stream: %!+s", stream);
+ stream->frozen = true;
+}
projects / babeltrace.git / blobdiff