lib: trace IR, values: reset pointers to `NULL` on destruction
[babeltrace.git] / lib / trace-ir / trace.c
index 02c18cc6203a2ca9ac491ee0a039584c81f887e2..f5c66cb8332d22087d6ac4f1a0e5ccbd77542bde 100644 (file)
@@ -1,8 +1,4 @@
 /*
- * trace.c
- *
- * Babeltrace trace IR - Trace
- *
  * Copyright 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
  *
  * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
@@ -30,6 +26,7 @@
 #include <babeltrace/lib-logging-internal.h>
 
 #include <babeltrace/assert-pre-internal.h>
+#include <babeltrace/trace-ir/private-trace.h>
 #include <babeltrace/trace-ir/trace-internal.h>
 #include <babeltrace/trace-ir/clock-class-internal.h>
 #include <babeltrace/trace-ir/stream-internal.h>
@@ -46,6 +43,7 @@
 #include <babeltrace/trace-ir/resolve-field-path-internal.h>
 #include <babeltrace/compiler-internal.h>
 #include <babeltrace/values.h>
+#include <babeltrace/private-values.h>
 #include <babeltrace/values-internal.h>
 #include <babeltrace/object.h>
 #include <babeltrace/types.h>
@@ -58,8 +56,8 @@
 #include <stdlib.h>
 
 struct bt_trace_is_static_listener_elem {
-       bt_trace_is_static_listener func;
-       bt_trace_listener_removed removed;
+       bt_private_trace_is_static_listener func;
+       bt_private_trace_listener_removed removed;
        void *data;
 };
 
@@ -86,11 +84,12 @@ void destroy_trace(struct bt_object *obj)
                                        struct bt_trace_is_static_listener_elem, i);
 
                        if (elem.removed) {
-                               elem.removed(trace, elem.data);
+                               elem.removed((void *) trace, elem.data);
                        }
                }
 
                g_array_free(trace->is_static_listeners, TRUE);
+               trace->is_static_listeners = NULL;
        }
 
        bt_object_pool_finalize(&trace->packet_header_field_pool);
@@ -98,28 +97,35 @@ void destroy_trace(struct bt_object *obj)
        if (trace->environment) {
                BT_LOGD_STR("Destroying environment attributes.");
                bt_attributes_destroy(trace->environment);
+               trace->environment = NULL;
        }
 
        if (trace->name.str) {
                g_string_free(trace->name.str, TRUE);
+               trace->name.str = NULL;
+               trace->name.value = NULL;
        }
 
        if (trace->streams) {
                BT_LOGD_STR("Destroying streams.");
                g_ptr_array_free(trace->streams, TRUE);
+               trace->streams = NULL;
        }
 
        if (trace->stream_classes) {
                BT_LOGD_STR("Destroying stream classes.");
                g_ptr_array_free(trace->stream_classes, TRUE);
+               trace->stream_classes = NULL;
        }
 
        if (trace->stream_classes_stream_count) {
                g_hash_table_destroy(trace->stream_classes_stream_count);
+               trace->stream_classes_stream_count = NULL;
        }
 
        BT_LOGD_STR("Putting packet header field classe.");
        bt_object_put_ref(trace->packet_header_fc);
+       trace->packet_header_fc = NULL;
        g_free(trace);
 }
 
@@ -130,7 +136,7 @@ void free_packet_header_field(struct bt_field_wrapper *field_wrapper,
        bt_field_wrapper_destroy(field_wrapper);
 }
 
-struct bt_trace *bt_trace_create(void)
+struct bt_private_trace *bt_private_trace_create(void)
 {
        struct bt_trace *trace = NULL;
        int ret;
@@ -201,7 +207,7 @@ error:
        BT_OBJECT_PUT_REF_AND_RESET(trace);
 
 end:
-       return trace;
+       return (void *) trace;
 }
 
 const char *bt_trace_get_name(struct bt_trace *trace)
@@ -210,8 +216,11 @@ const char *bt_trace_get_name(struct bt_trace *trace)
        return trace->name.value;
 }
 
-int bt_trace_set_name(struct bt_trace *trace, const char *name)
+int bt_private_trace_set_name(struct bt_private_trace *priv_trace,
+               const char *name)
 {
+       struct bt_trace *trace = (void *) priv_trace;
+
        BT_ASSERT_PRE_NON_NULL(trace, "Trace");
        BT_ASSERT_PRE_NON_NULL(name, "Name");
        BT_ASSERT_PRE_TRACE_HOT(trace);
@@ -227,33 +236,32 @@ bt_uuid bt_trace_get_uuid(struct bt_trace *trace)
        return trace->uuid.value;
 }
 
-int bt_trace_set_uuid(struct bt_trace *trace, bt_uuid uuid)
+void bt_private_trace_set_uuid(struct bt_private_trace *priv_trace,
+               bt_uuid uuid)
 {
+       struct bt_trace *trace = (void *) priv_trace;
+
        BT_ASSERT_PRE_NON_NULL(trace, "Trace");
        BT_ASSERT_PRE_NON_NULL(uuid, "UUID");
        BT_ASSERT_PRE_TRACE_HOT(trace);
        memcpy(trace->uuid.uuid, uuid, BABELTRACE_UUID_LEN);
        trace->uuid.value = trace->uuid.uuid;
        BT_LIB_LOGV("Set trace's UUID: %!+t", trace);
-       return 0;
 }
 
 BT_ASSERT_FUNC
 static
 bool trace_has_environment_entry(struct bt_trace *trace, const char *name)
 {
-       struct bt_value *attribute;
-
        BT_ASSERT(trace);
 
-       attribute = bt_attributes_borrow_field_value_by_name(
-               trace->environment, name);
-       return attribute != NULL;
+       return bt_attributes_borrow_field_value_by_name(
+               trace->environment, name) != NULL;
 }
 
 static
 int set_environment_entry(struct bt_trace *trace, const char *name,
-               struct bt_value *value)
+               struct bt_private_value *value)
 {
        int ret;
 
@@ -266,7 +274,7 @@ int set_environment_entry(struct bt_trace *trace, const char *name,
                "%![trace-]+t, entry-name=\"%s\"", trace, name);
        ret = bt_attributes_set_field_value(trace->environment, name,
                value);
-       bt_value_freeze(value);
+       bt_value_freeze(bt_private_value_borrow_value(value));
        if (ret) {
                BT_LIB_LOGE("Cannot set trace's environment entry: "
                        "%![trace-]+t, entry-name=\"%s\"", trace, name);
@@ -278,16 +286,18 @@ int set_environment_entry(struct bt_trace *trace, const char *name,
        return ret;
 }
 
-int bt_trace_set_environment_entry_string(struct bt_trace *trace,
+int bt_private_trace_set_environment_entry_string(
+               struct bt_private_trace *priv_trace,
                const char *name, const char *value)
 {
        int ret;
-       struct bt_value *value_obj;
+       struct bt_private_value *value_obj;
+       struct bt_trace *trace = (void *) priv_trace;
 
        BT_ASSERT_PRE_NON_NULL(trace, "Trace");
        BT_ASSERT_PRE_NON_NULL(name, "Name");
        BT_ASSERT_PRE_NON_NULL(value, "Value");
-       value_obj = bt_value_string_create_init(value);
+       value_obj = bt_private_value_string_create_init(value);
        if (!value_obj) {
                BT_LOGE_STR("Cannot create a string value object.");
                ret = -1;
@@ -302,15 +312,17 @@ end:
        return ret;
 }
 
-int bt_trace_set_environment_entry_integer(
-               struct bt_trace *trace, const char *name, int64_t value)
+int bt_private_trace_set_environment_entry_integer(
+               struct bt_private_trace *priv_trace,
+               const char *name, int64_t value)
 {
        int ret;
-       struct bt_value *value_obj;
+       struct bt_private_value *value_obj;
+       struct bt_trace *trace = (void *) priv_trace;
 
        BT_ASSERT_PRE_NON_NULL(trace, "Trace");
        BT_ASSERT_PRE_NON_NULL(name, "Name");
-       value_obj = bt_value_integer_create_init(value);
+       value_obj = bt_private_value_integer_create_init(value);
        if (!value_obj) {
                BT_LOGE_STR("Cannot create an integer value object.");
                ret = -1;
@@ -344,19 +356,37 @@ void bt_trace_borrow_environment_entry_by_index(
        BT_ASSERT_PRE_NON_NULL(value, "Value");
        BT_ASSERT_PRE_VALID_INDEX(index,
                bt_attributes_get_count(trace->environment));
-       *value = bt_attributes_borrow_field_value(trace->environment, index);
+       *value = bt_private_value_borrow_value(
+               bt_attributes_borrow_field_value(trace->environment, index));
        BT_ASSERT(*value);
        *name = bt_attributes_get_field_name(trace->environment, index);
        BT_ASSERT(*name);
 }
 
+void bt_private_trace_borrow_environment_entry_by_index(
+               struct bt_private_trace *trace, uint64_t index,
+               const char **name, struct bt_private_value **value)
+{
+       bt_trace_borrow_environment_entry_by_index((void *) trace,
+               index, name, (void *) value);
+}
+
 struct bt_value *bt_trace_borrow_environment_entry_value_by_name(
                struct bt_trace *trace, const char *name)
 {
        BT_ASSERT_PRE_NON_NULL(trace, "Trace");
        BT_ASSERT_PRE_NON_NULL(name, "Name");
-       return bt_attributes_borrow_field_value_by_name(trace->environment,
-               name);
+       return bt_private_value_borrow_value(
+               bt_attributes_borrow_field_value_by_name(trace->environment,
+                       name));
+}
+
+struct bt_private_value *
+bt_private_trace_borrow_environment_entry_value_by_name(
+               struct bt_private_trace *trace, const char *name)
+{
+       return (void *) bt_trace_borrow_environment_entry_value_by_name(
+               (void *) trace, name);
 }
 
 uint64_t bt_trace_get_stream_count(struct bt_trace *trace)
@@ -373,6 +403,12 @@ struct bt_stream *bt_trace_borrow_stream_by_index(
        return g_ptr_array_index(trace->streams, index);
 }
 
+struct bt_private_stream *bt_private_trace_borrow_stream_by_index(
+               struct bt_private_trace *trace, uint64_t index)
+{
+       return (void *) bt_trace_borrow_stream_by_index((void *) trace, index);
+}
+
 struct bt_stream *bt_trace_borrow_stream_by_id(
                struct bt_trace *trace, uint64_t id)
 {
@@ -395,6 +431,12 @@ end:
        return stream;
 }
 
+struct bt_private_stream *bt_private_trace_borrow_private_stream_by_id(
+               struct bt_private_trace *trace, uint64_t id)
+{
+       return (void *) bt_trace_borrow_stream_by_id((void *) trace, id);
+}
+
 uint64_t bt_trace_get_stream_class_count(struct bt_trace *trace)
 {
        BT_ASSERT_PRE_NON_NULL(trace, "Trace");
@@ -409,6 +451,14 @@ struct bt_stream_class *bt_trace_borrow_stream_class_by_index(
        return g_ptr_array_index(trace->stream_classes, index);
 }
 
+struct bt_private_stream_class *
+bt_private_trace_borrow_stream_class_by_index(
+               struct bt_private_trace *trace, uint64_t index)
+{
+       return (void *) bt_trace_borrow_stream_class_by_index(
+               (void *) trace, index);
+}
+
 struct bt_stream_class *bt_trace_borrow_stream_class_by_id(
                struct bt_trace *trace, uint64_t id)
 {
@@ -431,6 +481,13 @@ end:
        return stream_class;
 }
 
+struct bt_private_stream_class *
+bt_private_trace_borrow_stream_class_by_id(
+               struct bt_private_trace *trace, uint64_t id)
+{
+       return (void *) bt_trace_borrow_stream_class_by_id((void *) trace, id);
+}
+
 struct bt_field_class *bt_trace_borrow_packet_header_field_class(
                struct bt_trace *trace)
 {
@@ -438,10 +495,13 @@ struct bt_field_class *bt_trace_borrow_packet_header_field_class(
        return trace->packet_header_fc;
 }
 
-int bt_trace_set_packet_header_field_class(struct bt_trace *trace,
-               struct bt_field_class *field_class)
+int bt_private_trace_set_packet_header_field_class(
+               struct bt_private_trace *priv_trace,
+               struct bt_private_field_class *priv_field_class)
 {
        int ret;
+       struct bt_trace *trace = (void *) priv_trace;
+       struct bt_field_class *field_class = (void *) priv_field_class;
        struct bt_resolve_field_path_context resolve_ctx = {
                .packet_header = field_class,
                .packet_context = NULL,
@@ -479,8 +539,9 @@ bt_bool bt_trace_is_static(struct bt_trace *trace)
        return (bt_bool) trace->is_static;
 }
 
-int bt_trace_make_static(struct bt_trace *trace)
+int bt_private_trace_make_static(struct bt_private_trace *priv_trace)
 {
+       struct bt_trace *trace = (void *) priv_trace;
        uint64_t i;
 
        BT_ASSERT_PRE_NON_NULL(trace, "Trace");
@@ -495,18 +556,20 @@ int bt_trace_make_static(struct bt_trace *trace)
                                struct bt_trace_is_static_listener_elem, i);
 
                if (elem.func) {
-                       elem.func(trace, elem.data);
+                       elem.func((void *) trace, elem.data);
                }
        }
 
        return 0;
 }
 
-int bt_trace_add_is_static_listener(struct bt_trace *trace,
-               bt_trace_is_static_listener listener,
-               bt_trace_listener_removed listener_removed, void *data,
+int bt_private_trace_add_is_static_listener(
+               struct bt_private_trace *priv_trace,
+               bt_private_trace_is_static_listener listener,
+               bt_private_trace_listener_removed listener_removed, void *data,
                uint64_t *listener_id)
 {
+       struct bt_trace *trace = (void *) priv_trace;
        uint64_t i;
        struct bt_trace_is_static_listener_elem new_elem = {
                .func = listener,
@@ -558,9 +621,10 @@ bool has_listener_id(struct bt_trace *trace, uint64_t listener_id)
                        listener_id))->func != NULL;
 }
 
-int bt_trace_remove_is_static_listener(
-               struct bt_trace *trace, uint64_t listener_id)
+int bt_private_trace_remove_is_static_listener(
+               struct bt_private_trace *priv_trace, uint64_t listener_id)
 {
+       struct bt_trace *trace = (void *) priv_trace;
        struct bt_trace_is_static_listener_elem *elem;
 
        BT_ASSERT_PRE_NON_NULL(trace, "Trace");
@@ -583,7 +647,7 @@ int bt_trace_remove_is_static_listener(
                        "%![trace-]+t, listener-id=%" PRIu64,
                        trace, listener_id);
                trace->in_remove_listener = true;
-               elem->removed(trace, elem->data);
+               elem->removed((void *) trace, elem->data);
                trace->in_remove_listener = false;
        }
 
@@ -611,15 +675,16 @@ bt_bool bt_trace_assigns_automatic_stream_class_id(struct bt_trace *trace)
        return (bt_bool) trace->assigns_automatic_stream_class_id;
 }
 
-int bt_trace_set_assigns_automatic_stream_class_id(
-               struct bt_trace *trace, bt_bool value)
+void bt_private_trace_set_assigns_automatic_stream_class_id(
+               struct bt_private_trace *priv_trace, bt_bool value)
 {
+       struct bt_trace *trace = (void *) priv_trace;
+
        BT_ASSERT_PRE_NON_NULL(trace, "Trace");
        BT_ASSERT_PRE_TRACE_HOT(trace);
        trace->assigns_automatic_stream_class_id = (bool) value;
        BT_LIB_LOGV("Set trace's automatic stream class ID "
                "assignment property: %!+t", trace);
-       return 0;
 }
 
 BT_HIDDEN
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