Port: Add OSX clock_gettime compat
[lttng-tools.git] / src / bin / lttng-sessiond / ust-metadata.c
index e5d4944ed931ca9c2177cf124734a4dc0d3f6cf2..49edb1711254bf9475ddc74f9432aec0e0a38312 100644 (file)
@@ -45,6 +45,11 @@ struct offset_sample {
        uint64_t measure_delta;         /* lower is better */
 };
 
+static
+int _lttng_field_statedump(struct ust_registry_session *session,
+               const struct ustctl_field *fields, size_t nr_fields,
+               size_t *iter_field, size_t nesting);
+
 static inline
 int fls(unsigned int x)
 {
@@ -179,19 +184,54 @@ end:
        return ret;
 }
 
+static
+int print_tabs(struct ust_registry_session *session, size_t nesting)
+{
+       size_t i;
+
+       for (i = 0; i < nesting; i++) {
+               int ret;
+
+               ret = lttng_metadata_printf(session, "  ");
+               if (ret) {
+                       return ret;
+               }
+       }
+       return 0;
+}
+
+static
+void sanitize_ctf_identifier(char *out, const char *in)
+{
+       size_t i;
+
+       for (i = 0; i < LTTNG_UST_SYM_NAME_LEN; i++) {
+               switch (in[i]) {
+               case '.':
+               case '$':
+               case ':':
+                       out[i] = '_';
+                       break;
+               default:
+                       out[i] = in[i];
+               }
+       }
+}
+
 /* Called with session registry mutex held. */
 static
 int ust_metadata_enum_statedump(struct ust_registry_session *session,
                const char *enum_name,
                uint64_t enum_id,
                const struct ustctl_integer_type *container_type,
-               const char *field_name)
+               const char *field_name, size_t *iter_field, size_t nesting)
 {
        struct ust_registry_enum *reg_enum;
        const struct ustctl_enum_entry *entries;
        size_t nr_entries;
        int ret = 0;
        size_t i;
+       char identifier[LTTNG_UST_SYM_NAME_LEN];
 
        rcu_read_lock();
        reg_enum = ust_registry_lookup_enum_by_id(session, enum_name, enum_id);
@@ -204,8 +244,12 @@ int ust_metadata_enum_statedump(struct ust_registry_session *session,
        entries = reg_enum->entries;
        nr_entries = reg_enum->nr_entries;
 
+       ret = print_tabs(session, nesting);
+       if (ret) {
+               goto end;
+       }
        ret = lttng_metadata_printf(session,
-               "               enum : integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u; } {\n",
+               "enum : integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u; } {\n",
                container_type->size,
                container_type->alignment,
                container_type->signedness,
@@ -218,13 +262,18 @@ int ust_metadata_enum_statedump(struct ust_registry_session *session,
        if (ret) {
                goto end;
        }
+       nesting++;
        /* Dump all entries */
        for (i = 0; i < nr_entries; i++) {
                const struct ustctl_enum_entry *entry = &entries[i];
                int j, len;
 
+               ret = print_tabs(session, nesting);
+               if (ret) {
+                       goto end;
+               }
                ret = lttng_metadata_printf(session,
-                               "                       \"");
+                               "\"");
                if (ret) {
                        goto end;
                }
@@ -251,49 +300,152 @@ int ust_metadata_enum_statedump(struct ust_registry_session *session,
                                goto end;
                        }
                }
-               ret = lttng_metadata_printf(session,
-                               "\" = ");
+               ret = lttng_metadata_printf(session, "\"");
                if (ret) {
                        goto end;
                }
-               if (entry->start == entry->end) {
-                       ret = lttng_metadata_printf(session,
-                                       "%d,\n",
-                                       entry->start);
+
+               if (entry->u.extra.options &
+                               USTCTL_UST_ENUM_ENTRY_OPTION_IS_AUTO) {
+                       ret = lttng_metadata_printf(session, ",\n");
+                       if (ret) {
+                               goto end;
+                       }
                } else {
                        ret = lttng_metadata_printf(session,
-                                       "%d ... %d,\n",
-                                       entry->start, entry->end);
+                                       " = ");
+                       if (ret) {
+                               goto end;
+                       }
+
+                       if (entry->start.signedness) {
+                               ret = lttng_metadata_printf(session,
+                                       "%lld", (long long) entry->start.value);
+                       } else {
+                               ret = lttng_metadata_printf(session,
+                                       "%llu", entry->start.value);
+                       }
+                       if (ret) {
+                               goto end;
+                       }
+
+                       if (entry->start.signedness == entry->end.signedness &&
+                                       entry->start.value ==
+                                               entry->end.value) {
+                               ret = lttng_metadata_printf(session, ",\n");
+                       } else {
+                               if (entry->end.signedness) {
+                                       ret = lttng_metadata_printf(session,
+                                               " ... %lld,\n",
+                                               (long long) entry->end.value);
+                               } else {
+                                       ret = lttng_metadata_printf(session,
+                                               " ... %llu,\n",
+                                               entry->end.value);
+                               }
+                       }
+                       if (ret) {
+                               goto end;
+                       }
                }
+       }
+       nesting--;
+       sanitize_ctf_identifier(identifier, field_name);
+       ret = print_tabs(session, nesting);
+       if (ret) {
+               goto end;
+       }
+       ret = lttng_metadata_printf(session, "} _%s;\n",
+                       identifier);
+end:
+       (*iter_field)++;
+       return ret;
+}
+
+static
+int _lttng_variant_statedump(struct ust_registry_session *session,
+               const struct ustctl_field *fields, size_t nr_fields,
+               size_t *iter_field, size_t nesting)
+{
+       const struct ustctl_field *variant = &fields[*iter_field];
+       uint32_t nr_choices, i;
+       int ret;
+       char identifier[LTTNG_UST_SYM_NAME_LEN];
+
+       if (variant->type.atype != ustctl_atype_variant) {
+               ret = -EINVAL;
+               goto end;
+       }
+       nr_choices = variant->type.u.variant.nr_choices;
+       (*iter_field)++;
+       sanitize_ctf_identifier(identifier, variant->type.u.variant.tag_name);
+       ret = print_tabs(session, nesting);
+       if (ret) {
+               goto end;
+       }
+       ret = lttng_metadata_printf(session,
+                       "variant <_%s> {\n",
+                       identifier);
+       if (ret) {
+               goto end;
+       }
+
+       for (i = 0; i < nr_choices; i++) {
+               if (*iter_field >= nr_fields) {
+                       ret = -EOVERFLOW;
+                       goto end;
+               }
+               ret = _lttng_field_statedump(session,
+                               fields, nr_fields,
+                               iter_field, nesting + 1);
                if (ret) {
                        goto end;
                }
        }
-       ret = lttng_metadata_printf(session, "          } _%s;\n",
-                       field_name);
+       sanitize_ctf_identifier(identifier, variant->name);
+       ret = print_tabs(session, nesting);
+       ret = lttng_metadata_printf(session,
+                       "} _%s;\n",
+                       identifier);
+       if (ret) {
+               goto end;
+       }
 end:
        return ret;
 }
 
 static
 int _lttng_field_statedump(struct ust_registry_session *session,
-               const struct ustctl_field *field)
+               const struct ustctl_field *fields, size_t nr_fields,
+               size_t *iter_field, size_t nesting)
 {
        int ret = 0;
        const char *bo_be = " byte_order = be;";
        const char *bo_le = " byte_order = le;";
        const char *bo_native = "";
        const char *bo_reverse;
+       const struct ustctl_field *field;
+
+       if (*iter_field >= nr_fields) {
+               ret = -EOVERFLOW;
+               goto end;
+       }
+       field = &fields[*iter_field];
 
-       if (session->byte_order == BIG_ENDIAN)
+       if (session->byte_order == BIG_ENDIAN) {
                bo_reverse = bo_le;
-       else
+       } else {
                bo_reverse = bo_be;
+       }
 
        switch (field->type.atype) {
        case ustctl_atype_integer:
+               ret = print_tabs(session, nesting);
+               if (ret) {
+                       goto end;
+               }
                ret = lttng_metadata_printf(session,
-                       "               integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s;\n",
+                       "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s;\n",
                        field->type.u.basic.integer.size,
                        field->type.u.basic.integer.alignment,
                        field->type.u.basic.integer.signedness,
@@ -305,30 +457,40 @@ int _lttng_field_statedump(struct ust_registry_session *session,
                        field->type.u.basic.integer.base,
                        field->type.u.basic.integer.reverse_byte_order ? bo_reverse : bo_native,
                        field->name);
+               (*iter_field)++;
                break;
        case ustctl_atype_enum:
                ret = ust_metadata_enum_statedump(session,
                        field->type.u.basic.enumeration.name,
                        field->type.u.basic.enumeration.id,
                        &field->type.u.basic.enumeration.container_type,
-                       field->name);
+                       field->name, iter_field, nesting);
                break;
        case ustctl_atype_float:
+               ret = print_tabs(session, nesting);
+               if (ret) {
+                       goto end;
+               }
                ret = lttng_metadata_printf(session,
-                       "               floating_point { exp_dig = %u; mant_dig = %u; align = %u;%s } _%s;\n",
+                       "floating_point { exp_dig = %u; mant_dig = %u; align = %u;%s } _%s;\n",
                        field->type.u.basic._float.exp_dig,
                        field->type.u.basic._float.mant_dig,
                        field->type.u.basic._float.alignment,
                        field->type.u.basic.integer.reverse_byte_order ? bo_reverse : bo_native,
                        field->name);
+               (*iter_field)++;
                break;
        case ustctl_atype_array:
        {
                const struct ustctl_basic_type *elem_type;
 
+               ret = print_tabs(session, nesting);
+               if (ret) {
+                       goto end;
+               }
                elem_type = &field->type.u.array.elem_type;
                ret = lttng_metadata_printf(session,
-                       "               integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[%u];\n",
+                       "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[%u];\n",
                        elem_type->u.basic.integer.size,
                        elem_type->u.basic.integer.alignment,
                        elem_type->u.basic.integer.signedness,
@@ -340,6 +502,7 @@ int _lttng_field_statedump(struct ust_registry_session *session,
                        elem_type->u.basic.integer.base,
                        elem_type->u.basic.integer.reverse_byte_order ? bo_reverse : bo_native,
                        field->name, field->type.u.array.length);
+               (*iter_field)++;
                break;
        }
        case ustctl_atype_sequence:
@@ -349,8 +512,12 @@ int _lttng_field_statedump(struct ust_registry_session *session,
 
                elem_type = &field->type.u.sequence.elem_type;
                length_type = &field->type.u.sequence.length_type;
+               ret = print_tabs(session, nesting);
+               if (ret) {
+                       goto end;
+               }
                ret = lttng_metadata_printf(session,
-                       "               integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } __%s_length;\n",
+                       "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } __%s_length;\n",
                        length_type->u.basic.integer.size,
                        (unsigned int) length_type->u.basic.integer.alignment,
                        length_type->u.basic.integer.signedness,
@@ -362,11 +529,16 @@ int _lttng_field_statedump(struct ust_registry_session *session,
                        length_type->u.basic.integer.base,
                        length_type->u.basic.integer.reverse_byte_order ? bo_reverse : bo_native,
                        field->name);
-               if (ret)
-                       return ret;
+               if (ret) {
+                       goto end;
+               }
 
+               ret = print_tabs(session, nesting);
+               if (ret) {
+                       goto end;
+               }
                ret = lttng_metadata_printf(session,
-                       "               integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[ __%s_length ];\n",
+                       "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s[ __%s_length ];\n",
                        elem_type->u.basic.integer.size,
                        (unsigned int) elem_type->u.basic.integer.alignment,
                        elem_type->u.basic.integer.signedness,
@@ -379,20 +551,43 @@ int _lttng_field_statedump(struct ust_registry_session *session,
                        elem_type->u.basic.integer.reverse_byte_order ? bo_reverse : bo_native,
                        field->name,
                        field->name);
+               (*iter_field)++;
                break;
        }
 
        case ustctl_atype_string:
                /* Default encoding is UTF8 */
+               ret = print_tabs(session, nesting);
+               if (ret) {
+                       goto end;
+               }
                ret = lttng_metadata_printf(session,
-                       "               string%s _%s;\n",
+                       "string%s _%s;\n",
                        field->type.u.basic.string.encoding == ustctl_encode_ASCII ?
                                " { encoding = ASCII; }" : "",
                        field->name);
+               (*iter_field)++;
+               break;
+       case ustctl_atype_variant:
+               ret = _lttng_variant_statedump(session, fields, nr_fields, iter_field, nesting);
+               if (ret) {
+                       goto end;
+               }
+               break;
+       case ustctl_atype_struct:
+               ret = print_tabs(session, nesting);
+               if (ret) {
+                       goto end;
+               }
+               ret = lttng_metadata_printf(session,
+                       "struct {} _%s;\n",
+                       field->name);
+               (*iter_field)++;
                break;
        default:
-               return -EINVAL;
+               ret = -EINVAL;
        }
+end:
        return ret;
 }
 
@@ -402,16 +597,19 @@ int _lttng_context_metadata_statedump(struct ust_registry_session *session,
                struct ustctl_field *ctx)
 {
        int ret = 0;
-       int i;
+       size_t i = 0;
 
        if (!ctx)
                return 0;
-       for (i = 0; i < nr_ctx_fields; i++) {
-               const struct ustctl_field *field = &ctx[i];
-
-               ret = _lttng_field_statedump(session, field);
-               if (ret)
-                       return ret;
+       for (;;) {
+               if (i >= nr_ctx_fields) {
+                       break;
+               }
+               ret = _lttng_field_statedump(session, ctx,
+                               nr_ctx_fields, &i, 2);
+               if (ret) {
+                       break;
+               }
        }
        return ret;
 }
@@ -421,14 +619,17 @@ int _lttng_fields_metadata_statedump(struct ust_registry_session *session,
                struct ust_registry_event *event)
 {
        int ret = 0;
-       int i;
+       size_t i = 0;
 
-       for (i = 0; i < event->nr_fields; i++) {
-               const struct ustctl_field *field = &event->fields[i];
-
-               ret = _lttng_field_statedump(session, field);
-               if (ret)
-                       return ret;
+       for (;;) {
+               if (i >= event->nr_fields) {
+                       break;
+               }
+               ret = _lttng_field_statedump(session, event->fields,
+                               event->nr_fields, &i, 2);
+               if (ret) {
+                       break;
+               }
        }
        return ret;
 }
@@ -555,6 +756,7 @@ int _lttng_stream_packet_context_declare(struct ust_registry_session *session)
                "       uint64_clock_monotonic_t timestamp_end;\n"
                "       uint64_t content_size;\n"
                "       uint64_t packet_size;\n"
+               "       uint64_t packet_seq_num;\n"
                "       unsigned long events_discarded;\n"
                "       uint32_t cpu_id;\n"
                "};\n\n"
@@ -617,7 +819,7 @@ int measure_single_clock_offset(struct offset_sample *sample)
        int ret;
 
        monotonic[0] = trace_clock_read64();
-       ret = clock_gettime(CLOCK_REALTIME, &rts);
+       ret = lttng_clock_gettime(CLOCK_REALTIME, &rts);
        if (ret < 0) {
                return ret;
        }
@@ -717,6 +919,7 @@ int ust_metadata_session_statedump(struct ust_registry_session *session,
                "               uint32_t magic;\n"
                "               uint8_t  uuid[16];\n"
                "               uint32_t stream_id;\n"
+               "               uint64_t stream_instance_id;\n"
                "       };\n"
                "};\n\n",
                session->uint8_t_alignment,
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