Document libbabeltrace2's C API
[babeltrace.git] / src / plugins / lttng-utils / debug-info / trace-ir-mapping.c
index 3b694d3b6b7f41d1c4eab8f2cd3324e5760ff293..8faff7bcec6e1013263d211e374ad70cc4d62cea 100644 (file)
 #define BT_LOG_TAG "PLUGIN/FLT.LTTNG-UTILS.DEBUG-INFO/TRACE-IR-MAPPING"
 #include "logging/comp-logging.h"
 
-#include <stdbool.h>
-
 #include "common/assert.h"
 #include <babeltrace2/babeltrace.h>
-/* For bt_property_availability */
-#include <babeltrace2/property.h>
 
 #include "debug-info.h"
 #include "trace-ir-data-copy.h"
@@ -46,41 +42,58 @@ static
 bt_trace_class *create_new_mapped_trace_class(struct trace_ir_maps *ir_maps,
                const bt_trace_class *in_trace_class)
 {
-       int ret;
-       bt_trace_class *out_trace_class;
+       bt_self_component *self_comp = ir_maps->self_comp;
+       enum debug_info_trace_ir_mapping_status status;
+       struct trace_ir_metadata_maps *metadata_maps;
 
        BT_COMP_LOGD("Creating new mapped trace class: in-tc-addr=%p", in_trace_class);
 
        BT_ASSERT(ir_maps);
        BT_ASSERT(in_trace_class);
 
+       metadata_maps = borrow_metadata_maps_from_input_trace_class(ir_maps,
+               in_trace_class);
+
+       BT_ASSERT(!metadata_maps->output_trace_class);
+
        /* Create the ouput trace class. */
-       out_trace_class = bt_trace_class_create(ir_maps->self_comp);
-       if (!out_trace_class) {
-               BT_COMP_LOGE_STR("Error create output trace class");
-               goto end;
+       metadata_maps->output_trace_class  =
+               bt_trace_class_create(ir_maps->self_comp);
+       if (!metadata_maps->output_trace_class) {
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error create output trace class");
+               goto error;
        }
 
-       /* If not, create a new one and add it to the mapping. */
-       ret = copy_trace_class_content(in_trace_class, out_trace_class,
-               ir_maps->log_level, ir_maps->self_comp);
-       if (ret) {
-               BT_COMP_LOGE_STR("Error copy content to output trace class");
-               out_trace_class = NULL;
-               goto end;
+       /* Copy the content over and add to the mapping. */
+       status = copy_trace_class_content(ir_maps, in_trace_class,
+               metadata_maps->output_trace_class, ir_maps->log_level,
+               ir_maps->self_comp);
+       if (status != DEBUG_INFO_TRACE_IR_MAPPING_STATUS_OK) {
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error copy content to output trace class"
+                       "in-tc-addr=%p, out-tc-addr=%p", in_trace_class,
+                       metadata_maps->output_trace_class);
+               goto error;
        }
 
-       BT_COMP_LOGD("Created new mapped trace class: in-tc-addr=%p, out-tc-addr=%p",
-               in_trace_class, out_trace_class);
+       BT_COMP_LOGD("Created new mapped trace class: "
+               "in-tc-addr=%p, out-tc-addr=%p",
+               in_trace_class, metadata_maps->output_trace_class);
 
+       goto end;
+error:
+       BT_TRACE_CLASS_PUT_REF_AND_RESET(metadata_maps->output_trace_class);
 end:
-       return out_trace_class;
+       return metadata_maps->output_trace_class;
 }
 
 static
 bt_trace *create_new_mapped_trace(struct trace_ir_maps *ir_maps,
                const bt_trace *in_trace)
 {
+       bt_self_component *self_comp = ir_maps->self_comp;
+       enum debug_info_trace_ir_mapping_status status;
        struct trace_ir_metadata_maps *metadata_maps;
        const bt_trace_class *in_trace_class;
        bt_trace *out_trace;
@@ -101,6 +114,8 @@ bt_trace *create_new_mapped_trace(struct trace_ir_maps *ir_maps,
                metadata_maps->output_trace_class =
                        create_new_mapped_trace_class(ir_maps, in_trace_class);
                if (!metadata_maps->output_trace_class) {
+                       BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                               "Error create output trace class");
                        out_trace = NULL;
                        goto end;
                }
@@ -109,76 +124,101 @@ bt_trace *create_new_mapped_trace(struct trace_ir_maps *ir_maps,
        /* Create the output trace from the output trace class. */
        out_trace = bt_trace_create(metadata_maps->output_trace_class);
        if (!out_trace) {
-               BT_COMP_LOGE_STR("Error create output trace");
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error create output trace");
                goto end;
        }
 
        /* Copy the content over to the output trace. */
-       copy_trace_content(in_trace, out_trace, ir_maps->log_level,
+       status = copy_trace_content(in_trace, out_trace, ir_maps->log_level,
                ir_maps->self_comp);
+       if (status != DEBUG_INFO_TRACE_IR_MAPPING_STATUS_OK) {
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error copy content to output trace"
+                       "in-t-addr=%p, out-t-addr=%p", in_trace, out_trace);
+               goto error;
+       }
 
        BT_COMP_LOGD("Created new mapped trace: in-t-addr=%p, out-t-addr=%p",
                in_trace, out_trace);
+       goto end;
+
+error:
+       BT_TRACE_PUT_REF_AND_RESET(out_trace);
 end:
        return out_trace;
 }
 
-static
-bt_stream_class *borrow_mapped_stream_class(struct trace_ir_metadata_maps *md_maps,
+BT_HIDDEN
+bt_stream_class *trace_ir_mapping_borrow_mapped_stream_class(
+               struct trace_ir_maps *ir_maps,
                const bt_stream_class *in_stream_class)
 {
-       BT_ASSERT_DBG(md_maps);
+       BT_ASSERT_DBG(ir_maps);
        BT_ASSERT_DBG(in_stream_class);
 
+       struct trace_ir_metadata_maps *md_maps =
+               borrow_metadata_maps_from_input_stream_class(ir_maps,
+                       in_stream_class);
        return g_hash_table_lookup(md_maps->stream_class_map,
                (gpointer) in_stream_class);
 }
 
-static
-bt_stream_class *create_new_mapped_stream_class(struct trace_ir_maps *ir_maps,
+BT_HIDDEN
+bt_stream_class *trace_ir_mapping_create_new_mapped_stream_class(
+               struct trace_ir_maps *ir_maps,
                const bt_stream_class *in_stream_class)
 {
+       bt_self_component *self_comp = ir_maps->self_comp;
+       enum debug_info_trace_ir_mapping_status status;
        struct trace_ir_metadata_maps *md_maps;
        bt_stream_class *out_stream_class;
-       int ret;
 
        BT_COMP_LOGD("Creating new mapped stream class: in-sc-addr=%p",
                in_stream_class);
 
        BT_ASSERT(ir_maps);
        BT_ASSERT(in_stream_class);
+       BT_ASSERT(!trace_ir_mapping_borrow_mapped_stream_class(ir_maps,
+               in_stream_class));
 
        md_maps = borrow_metadata_maps_from_input_stream_class(ir_maps,
                in_stream_class);
 
        BT_ASSERT(md_maps);
-       BT_ASSERT(!borrow_mapped_stream_class(md_maps, in_stream_class));
 
        /* Create the output stream class. */
        out_stream_class = bt_stream_class_create_with_id(
                md_maps->output_trace_class,
                bt_stream_class_get_id(in_stream_class));
        if (!out_stream_class) {
-               BT_COMP_LOGE_STR("Error create output stream class");
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error create output stream class");
                goto end;
        }
 
+       /* Add it to the mapping. The mapping now owns out_stream_class. */
+       g_hash_table_insert(md_maps->stream_class_map,
+               (gpointer) in_stream_class, out_stream_class);
+
        /* Copy the content over to the output stream class. */
-       ret = copy_stream_class_content(ir_maps, in_stream_class,
+       status = copy_stream_class_content(ir_maps, in_stream_class,
                out_stream_class);
-       if (ret) {
-               BT_COMP_LOGE_STR("Error copy content to output stream class");
-               out_stream_class = NULL;
-               goto end;
+       if (status != DEBUG_INFO_TRACE_IR_MAPPING_STATUS_OK) {
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error copy content to output stream class: "
+                       "in-sc-addr=%p, out-sc-addr=%p", in_stream_class,
+                       out_stream_class);
+               goto error;
        }
 
-       /* Add it to the mapping. */
-       g_hash_table_insert(md_maps->stream_class_map,
-               (gpointer) in_stream_class, out_stream_class);
-
-       BT_COMP_LOGD("Created new mapped stream class: in-sc-addr=%p, out-sc-addr=%p",
+       BT_COMP_LOGD("Created new mapped stream class: "
+               "in-sc-addr=%p, out-sc-addr=%p",
                in_stream_class, out_stream_class);
 
+       goto end;
+error:
+       out_stream_class = NULL;
 end:
        return out_stream_class;
 }
@@ -197,8 +237,9 @@ BT_HIDDEN
 bt_stream *trace_ir_mapping_create_new_mapped_stream(
                struct trace_ir_maps *ir_maps, const bt_stream *in_stream)
 {
+       bt_self_component *self_comp = ir_maps->self_comp;
+       enum debug_info_trace_ir_mapping_status status;
        struct trace_ir_data_maps *d_maps;
-       struct trace_ir_metadata_maps *md_maps;
        const bt_stream_class *in_stream_class;
        const bt_trace *in_trace;
        bt_stream_class *out_stream_class;
@@ -215,7 +256,9 @@ bt_stream *trace_ir_mapping_create_new_mapped_stream(
                /* Create the output trace for this input trace. */
                d_maps->output_trace = create_new_mapped_trace(ir_maps, in_trace);
                if (!d_maps->output_trace) {
-                       goto end;
+                       BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                               "Error creating mapped trace");
+                       goto error;
                }
        }
 
@@ -223,14 +266,17 @@ bt_stream *trace_ir_mapping_create_new_mapped_stream(
        BT_ASSERT(!borrow_mapped_stream(d_maps, in_stream));
 
        in_stream_class = bt_stream_borrow_class_const(in_stream);
-       md_maps = borrow_metadata_maps_from_input_stream_class(ir_maps, in_stream_class);
-       out_stream_class = borrow_mapped_stream_class(md_maps, in_stream_class);
+       out_stream_class = trace_ir_mapping_borrow_mapped_stream_class(ir_maps,
+               in_stream_class);
+
        if (!out_stream_class) {
                /* Create the output stream class for this input stream class. */
-               out_stream_class = create_new_mapped_stream_class(ir_maps,
-                       in_stream_class);
+               out_stream_class = trace_ir_mapping_create_new_mapped_stream_class(
+                       ir_maps, in_stream_class);
                if (!out_stream_class) {
-                       goto end;
+                       BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                               "Error creating mapped stream class");
+                       goto error;
                }
        }
        BT_ASSERT(out_stream_class);
@@ -239,21 +285,31 @@ bt_stream *trace_ir_mapping_create_new_mapped_stream(
        out_stream = bt_stream_create_with_id(out_stream_class,
                d_maps->output_trace, bt_stream_get_id(in_stream));
        if (!out_stream) {
-               BT_COMP_LOGE_STR("Error creating output stream");
-               goto end;
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error creating output stream");
+               goto error;
        }
 
-       /* Copy the content over to the output stream. */
-       copy_stream_content(in_stream, out_stream, ir_maps->log_level,
-               ir_maps->self_comp);
-
-       /* Add it to the mapping. */
+       /* Add it to the mapping. The mapping now owns out_stream.*/
        g_hash_table_insert(d_maps->stream_map, (gpointer) in_stream,
                out_stream);
 
+       /* Copy the content over to the output stream. */
+       status = copy_stream_content(in_stream, out_stream, ir_maps->log_level,
+               ir_maps->self_comp);
+       if (status != DEBUG_INFO_TRACE_IR_MAPPING_STATUS_OK) {
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error copy content to output stream: "
+                       "in-s-addr=%p, out-s-addr=%p", in_stream, out_stream);
+               goto error;
+       }
+
        BT_COMP_LOGD("Created new mapped stream: in-s-addr=%p, out-s-addr=%p",
                in_stream, out_stream);
 
+       goto end;
+error:
+       out_stream = NULL;
 end:
        return out_stream;
 }
@@ -285,11 +341,12 @@ bt_event_class *trace_ir_mapping_create_new_mapped_event_class(
                struct trace_ir_maps *ir_maps,
                const bt_event_class *in_event_class)
 {
+       bt_self_component *self_comp = ir_maps->self_comp;
+       enum debug_info_trace_ir_mapping_status status;
        struct trace_ir_metadata_maps *md_maps;
        const bt_stream_class *in_stream_class;
        bt_stream_class *out_stream_class;
        bt_event_class *out_event_class;
-       int ret;
 
        BT_COMP_LOGD("Creating new mapped event class: in-ec-addr=%p",
                in_event_class);
@@ -308,33 +365,40 @@ bt_event_class *trace_ir_mapping_create_new_mapped_event_class(
        BT_ASSERT(!borrow_mapped_event_class(md_maps, in_event_class));
 
        /* Get the right output stream class to add the new event class to it. */
-       out_stream_class = borrow_mapped_stream_class(md_maps, in_stream_class);
+       out_stream_class = trace_ir_mapping_borrow_mapped_stream_class(
+               ir_maps, in_stream_class);
        BT_ASSERT(out_stream_class);
 
        /* Create an output event class. */
        out_event_class = bt_event_class_create_with_id(out_stream_class,
                bt_event_class_get_id(in_event_class));
        if (!out_event_class) {
-               BT_COMP_LOGE_STR("Error creating output event class");
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error creating output event class");
                goto end;
        }
 
+       /* Add it to the mapping. The mapping now owns out_event_class. */
+       g_hash_table_insert(md_maps->event_class_map, (gpointer) in_event_class,
+               out_event_class);
+
        /* Copy the content over to the output event class. */
-       ret = copy_event_class_content(ir_maps, in_event_class,
+       status = copy_event_class_content(ir_maps, in_event_class,
                out_event_class);
-       if (ret) {
-               BT_COMP_LOGE_STR("Error copy content to output event class");
-               out_event_class = NULL;
-               goto end;
+       if (status != DEBUG_INFO_TRACE_IR_MAPPING_STATUS_OK) {
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error copy content to output event class: "
+                       "in-ec-addr=%p, out-ec-addr=%p", in_event_class,
+                       out_event_class);
+               goto error;
        }
 
-       /* Add it to the mapping. */
-       g_hash_table_insert(md_maps->event_class_map,
-               (gpointer) in_event_class, out_event_class);
-
        BT_COMP_LOGD("Created new mapped event class: in-ec-addr=%p, out-ec-addr=%p",
                in_event_class, out_event_class);
 
+       goto end;
+error:
+       out_event_class = NULL;
 end:
        return out_event_class;
 }
@@ -371,6 +435,8 @@ bt_packet *trace_ir_mapping_create_new_mapped_packet(
                struct trace_ir_maps *ir_maps,
                const bt_packet *in_packet)
 {
+       bt_self_component *self_comp = ir_maps->self_comp;
+       enum debug_info_trace_ir_mapping_status status;
        struct trace_ir_data_maps *d_maps;
        const bt_stream *in_stream;
        const bt_trace *in_trace;
@@ -394,21 +460,31 @@ bt_packet *trace_ir_mapping_create_new_mapped_packet(
        /* Create the output packet. */
        out_packet = bt_packet_create(out_stream);
        if (!out_packet) {
-               BT_COMP_LOGE_STR("Error create output packet");
-               goto end;
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error create output packet");
+               goto error;
        }
 
+       /* Add it to the mapping. The mapping now owns out_packet. */
+       g_hash_table_insert(d_maps->packet_map, (gpointer) in_packet,
+               out_packet);
+
        /* Copy the content over to the output packet. */
-       copy_packet_content(in_packet, out_packet, ir_maps->log_level,
+       status = copy_packet_content(in_packet, out_packet, ir_maps->log_level,
                ir_maps->self_comp);
-
-       /* Add it to the mapping. */
-       g_hash_table_insert(d_maps->packet_map,
-               (gpointer) in_packet, out_packet);
+       if (status != DEBUG_INFO_TRACE_IR_MAPPING_STATUS_OK) {
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error copy content to output packet: "
+                       "in-p-addr=%p, out-p-addr=%p", in_packet, out_packet);
+               goto error;
+       }
 
        BT_COMP_LOGD("Created new mapped packet: in-p-addr=%p, out-p-addr=%p",
                in_packet, out_packet);
 
+       goto end;
+error:
+       out_packet = NULL;
 end:
        return out_packet;
 }
@@ -487,11 +563,13 @@ void trace_ir_data_maps_remove_func(const bt_trace *in_trace, void *data)
 struct trace_ir_data_maps *trace_ir_data_maps_create(struct trace_ir_maps *ir_maps,
                const bt_trace *in_trace)
 {
+       bt_self_component *self_comp = ir_maps->self_comp;
        bt_trace_add_listener_status add_listener_status;
        struct trace_ir_data_maps *d_maps = g_new0(struct trace_ir_data_maps, 1);
 
        if (!d_maps) {
-               BT_COMP_LOGE_STR("Error allocating trace_ir_maps");
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error allocating trace_ir_maps");
                goto error;
        }
 
@@ -518,12 +596,14 @@ struct trace_ir_metadata_maps *trace_ir_metadata_maps_create(
                struct trace_ir_maps *ir_maps,
                const bt_trace_class *in_trace_class)
 {
+       bt_self_component *self_comp = ir_maps->self_comp;
        bt_trace_class_add_listener_status add_listener_status;
        struct trace_ir_metadata_maps *md_maps =
                g_new0(struct trace_ir_metadata_maps, 1);
 
        if (!md_maps) {
-               BT_COMP_LOGE_STR("Error allocating trace_ir_maps");
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error allocating trace_ir_maps");
                goto error;
        }
 
@@ -538,7 +618,8 @@ struct trace_ir_metadata_maps *trace_ir_metadata_maps_create(
        md_maps->fc_resolving_ctx =
                g_new0(struct field_class_resolving_context, 1);
        if (!md_maps->fc_resolving_ctx) {
-               BT_COMP_LOGE_STR("Error allocating field_class_resolving_context");
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Error allocating field_class_resolving_context");
                goto error;
        }
 
@@ -687,7 +768,8 @@ struct trace_ir_maps *trace_ir_maps_create(bt_self_component *self_comp,
        /* Copy debug info field name received from the user. */
        ir_maps->debug_info_field_class_name = g_strdup(debug_info_field_name);
        if (!ir_maps->debug_info_field_class_name) {
-               BT_COMP_LOGE_STR("Cannot copy debug info field name");
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Cannot copy debug info field name");
                goto error;
        }
 
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