/*
- * ust-metadata.c
- *
- * LTTng-UST metadata generation
- *
* Copyright (C) 2010-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program 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 General Public License for more details.
+ * SPDX-License-Identifier: GPL-2.0-only
*
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#define _GNU_SOURCE
#define _LGPL_SOURCE
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <inttypes.h>
#include <common/common.h>
+#include <common/time.h>
#include "ust-registry.h"
#include "ust-clock.h"
#define max_t(type, a, b) ((type) ((a) > (b) ? (a) : (b)))
#endif
-#define NSEC_PER_SEC 1000000000ULL
#define NR_CLOCK_OFFSET_SAMPLES 10
struct offset_sample {
- uint64_t offset; /* correlation offset */
+ int64_t offset; /* correlation offset */
uint64_t measure_delta; /* lower is better */
};
-static inline
-int fls(unsigned int x)
-{
- int r = 32;
-
- if (!x)
- return 0;
- if (!(x & 0xFFFF0000U)) {
- x <<= 16;
- r -= 16;
- }
- if (!(x & 0xFF000000U)) {
- x <<= 8;
- r -= 8;
- }
- if (!(x & 0xF0000000U)) {
- x <<= 4;
- r -= 4;
- }
- if (!(x & 0xC0000000U)) {
- x <<= 2;
- r -= 2;
- }
- if (!(x & 0x80000000U)) {
- x <<= 1;
- r -= 1;
- }
- return r;
-}
+static
+int _lttng_field_statedump(struct ust_registry_session *session,
+ const struct lttng_ust_ctl_field *fields, size_t nr_fields,
+ size_t *iter_field, size_t nesting);
static inline
int get_count_order(unsigned int count)
{
int order;
- order = fls(count) - 1;
- if (count & (count - 1))
+ order = lttng_fls(count) - 1;
+ if (count & (count - 1)) {
order++;
+ }
+ LTTNG_ASSERT(order >= 0);
return order;
}
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_ABI_SYM_NAME_LEN; i++) {
+ switch (in[i]) {
+ case '.':
+ case '$':
+ case ':':
+ out[i] = '_';
+ break;
+ default:
+ out[i] = in[i];
+ }
+ }
+}
+
+static
+int print_escaped_ctf_string(struct ust_registry_session *session, const char *string)
+{
+ int ret = 0;
+ size_t i;
+ char cur;
+
+ i = 0;
+ cur = string[i];
+ while (cur != '\0') {
+ switch (cur) {
+ case '\n':
+ ret = lttng_metadata_printf(session, "%s", "\\n");
+ break;
+ case '\\':
+ case '"':
+ ret = lttng_metadata_printf(session, "%c", '\\');
+ if (ret) {
+ goto error;
+ }
+ /* We still print the current char */
+ /* Fallthrough */
+ default:
+ ret = lttng_metadata_printf(session, "%c", cur);
+ break;
+ }
+
+ if (ret) {
+ goto error;
+ }
+
+ cur = string[++i];
+ }
+error:
+ return ret;
+}
+
+/* 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 lttng_ust_ctl_integer_type *container_type,
+ const char *field_name, size_t *iter_field, size_t nesting)
+{
+ struct ust_registry_enum *reg_enum;
+ const struct lttng_ust_ctl_enum_entry *entries;
+ size_t nr_entries;
+ int ret = 0;
+ size_t i;
+ char identifier[LTTNG_UST_ABI_SYM_NAME_LEN];
+
+ rcu_read_lock();
+ reg_enum = ust_registry_lookup_enum_by_id(session, enum_name, enum_id);
+ rcu_read_unlock();
+ /* reg_enum can still be used because session registry mutex is held. */
+ if (!reg_enum) {
+ ret = -ENOENT;
+ goto end;
+ }
+ 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",
+ container_type->size,
+ container_type->alignment,
+ container_type->signedness,
+ (container_type->encoding == lttng_ust_ctl_encode_none)
+ ? "none"
+ : (container_type->encoding == lttng_ust_ctl_encode_UTF8)
+ ? "UTF8"
+ : "ASCII",
+ container_type->base);
+ if (ret) {
+ goto end;
+ }
+ nesting++;
+ /* Dump all entries */
+ for (i = 0; i < nr_entries; i++) {
+ const struct lttng_ust_ctl_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;
+ }
+ len = strlen(entry->string);
+ /* Escape the character '"' */
+ for (j = 0; j < len; j++) {
+ char c = entry->string[j];
+
+ switch (c) {
+ case '"':
+ ret = lttng_metadata_printf(session,
+ "\\\"");
+ break;
+ case '\\':
+ ret = lttng_metadata_printf(session,
+ "\\\\");
+ break;
+ default:
+ ret = lttng_metadata_printf(session,
+ "%c", c);
+ break;
+ }
+ if (ret) {
+ goto end;
+ }
+ }
+ ret = lttng_metadata_printf(session, "\"");
+ if (ret) {
+ goto end;
+ }
+
+ if (entry->u.extra.options &
+ LTTNG_UST_CTL_UST_ENUM_ENTRY_OPTION_IS_AUTO) {
+ ret = lttng_metadata_printf(session, ",\n");
+ if (ret) {
+ goto end;
+ }
+ } else {
+ ret = lttng_metadata_printf(session,
+ " = ");
+ 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,
+ uint32_t nr_choices, const char *tag_name,
+ uint32_t alignment,
+ const struct lttng_ust_ctl_field *fields, size_t nr_fields,
+ size_t *iter_field, size_t nesting)
+{
+ const struct lttng_ust_ctl_field *variant = &fields[*iter_field];
+ uint32_t i;
+ int ret;
+ char identifier[LTTNG_UST_ABI_SYM_NAME_LEN];
+
+ if (variant->type.atype != lttng_ust_ctl_atype_variant) {
+ ret = -EINVAL;
+ goto end;
+ }
+ (*iter_field)++;
+ sanitize_ctf_identifier(identifier, tag_name);
+ if (alignment) {
+ ret = print_tabs(session, nesting);
+ if (ret) {
+ goto end;
+ }
+ ret = lttng_metadata_printf(session,
+ "struct { } align(%u) _%s_padding;\n",
+ alignment * CHAR_BIT,
+ variant->name);
+ if (ret) {
+ goto end;
+ }
+ }
+ 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;
+ }
+ }
+ sanitize_ctf_identifier(identifier, variant->name);
+ ret = print_tabs(session, nesting);
+ if (ret) {
+ goto end;
+ }
+ 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 lttng_ust_ctl_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 lttng_ust_ctl_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:
+ case lttng_ust_ctl_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",
- field->type.u.basic.integer.size,
- field->type.u.basic.integer.alignment,
- field->type.u.basic.integer.signedness,
- (field->type.u.basic.integer.encoding == ustctl_encode_none)
+ "integer { size = %u; align = %u; signed = %u; encoding = %s; base = %u;%s } _%s;\n",
+ field->type.u.integer.size,
+ field->type.u.integer.alignment,
+ field->type.u.integer.signedness,
+ (field->type.u.integer.encoding == lttng_ust_ctl_encode_none)
? "none"
- : (field->type.u.basic.integer.encoding == ustctl_encode_UTF8)
+ : (field->type.u.integer.encoding == lttng_ust_ctl_encode_UTF8)
? "UTF8"
: "ASCII",
- field->type.u.basic.integer.base,
- field->type.u.basic.integer.reverse_byte_order ? bo_reverse : bo_native,
+ field->type.u.integer.base,
+ field->type.u.integer.reverse_byte_order ? bo_reverse : bo_native,
field->name);
+ (*iter_field)++;
+ break;
+ case lttng_ust_ctl_atype_enum:
+ ret = ust_metadata_enum_statedump(session,
+ field->type.u.legacy.basic.enumeration.name,
+ field->type.u.legacy.basic.enumeration.id,
+ &field->type.u.legacy.basic.enumeration.container_type,
+ field->name, iter_field, nesting);
break;
- case ustctl_atype_float:
+ case lttng_ust_ctl_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",
- 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,
+ "floating_point { exp_dig = %u; mant_dig = %u; align = %u;%s } _%s;\n",
+ field->type.u._float.exp_dig,
+ field->type.u._float.mant_dig,
+ field->type.u._float.alignment,
+ field->type.u._float.reverse_byte_order ? bo_reverse : bo_native,
field->name);
+ (*iter_field)++;
break;
- case ustctl_atype_enum:
- return -EINVAL;
- case ustctl_atype_array:
+ case lttng_ust_ctl_atype_array:
{
- const struct ustctl_basic_type *elem_type;
+ const struct lttng_ust_ctl_basic_type *elem_type;
- elem_type = &field->type.u.array.elem_type;
+ ret = print_tabs(session, nesting);
+ if (ret) {
+ goto end;
+ }
+ elem_type = &field->type.u.legacy.array.elem_type;
+ /* Only integers are currently supported in arrays. */
+ if (elem_type->atype != lttng_ust_ctl_atype_integer) {
+ ret = -EINVAL;
+ goto end;
+ }
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,
- (elem_type->u.basic.integer.encoding == ustctl_encode_none)
+ (elem_type->u.basic.integer.encoding == lttng_ust_ctl_encode_none)
? "none"
- : (elem_type->u.basic.integer.encoding == ustctl_encode_UTF8)
+ : (elem_type->u.basic.integer.encoding == lttng_ust_ctl_encode_UTF8)
? "UTF8"
: "ASCII",
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);
+ field->name, field->type.u.legacy.array.length);
+ (*iter_field)++;
+ break;
+ }
+ case lttng_ust_ctl_atype_array_nestable:
+ {
+ uint32_t array_length;
+ const struct lttng_ust_ctl_field *array_nestable;
+ const struct lttng_ust_ctl_type *elem_type;
+
+ array_length = field->type.u.array_nestable.length;
+ (*iter_field)++;
+
+ if (*iter_field >= nr_fields) {
+ ret = -EOVERFLOW;
+ goto end;
+ }
+ array_nestable = &fields[*iter_field];
+ elem_type = &array_nestable->type;
+
+ /* Only integers are currently supported in arrays. */
+ if (elem_type->atype != lttng_ust_ctl_atype_integer) {
+ ret = -EINVAL;
+ goto end;
+ }
+
+ if (field->type.u.array_nestable.alignment) {
+ ret = print_tabs(session, nesting);
+ if (ret) {
+ goto end;
+ }
+ ret = lttng_metadata_printf(session,
+ "struct { } align(%u) _%s_padding;\n",
+ field->type.u.array_nestable.alignment * CHAR_BIT,
+ field->name);
+ 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[%u];\n",
+ elem_type->u.integer.size,
+ elem_type->u.integer.alignment,
+ elem_type->u.integer.signedness,
+ (elem_type->u.integer.encoding == lttng_ust_ctl_encode_none)
+ ? "none"
+ : (elem_type->u.integer.encoding == lttng_ust_ctl_encode_UTF8)
+ ? "UTF8"
+ : "ASCII",
+ elem_type->u.integer.base,
+ elem_type->u.integer.reverse_byte_order ? bo_reverse : bo_native,
+ field->name, array_length);
+ (*iter_field)++;
break;
}
- case ustctl_atype_sequence:
+ case lttng_ust_ctl_atype_sequence:
{
- const struct ustctl_basic_type *elem_type;
- const struct ustctl_basic_type *length_type;
+ const struct lttng_ust_ctl_basic_type *elem_type;
+ const struct lttng_ust_ctl_basic_type *length_type;
+
+ elem_type = &field->type.u.legacy.sequence.elem_type;
+ length_type = &field->type.u.legacy.sequence.length_type;
+ ret = print_tabs(session, nesting);
+ if (ret) {
+ goto end;
+ }
+
+ /* Only integers are currently supported in sequences. */
+ if (elem_type->atype != lttng_ust_ctl_atype_integer) {
+ ret = -EINVAL;
+ goto end;
+ }
- elem_type = &field->type.u.sequence.elem_type;
- length_type = &field->type.u.sequence.length_type;
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,
- (length_type->u.basic.integer.encoding == ustctl_encode_none)
+ (length_type->u.basic.integer.encoding == lttng_ust_ctl_encode_none)
? "none"
- : ((length_type->u.basic.integer.encoding == ustctl_encode_UTF8)
+ : ((length_type->u.basic.integer.encoding == lttng_ust_ctl_encode_UTF8)
? "UTF8"
: "ASCII"),
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,
- (elem_type->u.basic.integer.encoding == ustctl_encode_none)
+ (elem_type->u.basic.integer.encoding == lttng_ust_ctl_encode_none)
? "none"
- : ((elem_type->u.basic.integer.encoding == ustctl_encode_UTF8)
+ : ((elem_type->u.basic.integer.encoding == lttng_ust_ctl_encode_UTF8)
? "UTF8"
: "ASCII"),
elem_type->u.basic.integer.base,
elem_type->u.basic.integer.reverse_byte_order ? bo_reverse : bo_native,
field->name,
field->name);
+ (*iter_field)++;
break;
}
+ case lttng_ust_ctl_atype_sequence_nestable:
+ {
+ const struct lttng_ust_ctl_field *sequence_nestable;
+ const struct lttng_ust_ctl_type *elem_type;
- case ustctl_atype_string:
+ (*iter_field)++;
+ if (*iter_field >= nr_fields) {
+ ret = -EOVERFLOW;
+ goto end;
+ }
+ sequence_nestable = &fields[*iter_field];
+ elem_type = &sequence_nestable->type;
+
+ /* Only integers are currently supported in sequences. */
+ if (elem_type->atype != lttng_ust_ctl_atype_integer) {
+ ret = -EINVAL;
+ goto end;
+ }
+
+ if (field->type.u.sequence_nestable.alignment) {
+ ret = print_tabs(session, nesting);
+ if (ret) {
+ goto end;
+ }
+ ret = lttng_metadata_printf(session,
+ "struct { } align(%u) _%s_padding;\n",
+ field->type.u.sequence_nestable.alignment * CHAR_BIT,
+ field->name);
+ 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 ];\n",
+ elem_type->u.integer.size,
+ (unsigned int) elem_type->u.integer.alignment,
+ elem_type->u.integer.signedness,
+ (elem_type->u.integer.encoding == lttng_ust_ctl_encode_none)
+ ? "none"
+ : ((elem_type->u.integer.encoding == lttng_ust_ctl_encode_UTF8)
+ ? "UTF8"
+ : "ASCII"),
+ elem_type->u.integer.base,
+ elem_type->u.integer.reverse_byte_order ? bo_reverse : bo_native,
+ field->name,
+ field->type.u.sequence_nestable.length_name);
+ (*iter_field)++;
+ break;
+ }
+ case lttng_ust_ctl_atype_string:
/* Default encoding is UTF8 */
+ ret = print_tabs(session, nesting);
+ if (ret) {
+ goto end;
+ }
ret = lttng_metadata_printf(session,
- " string%s _%s;\n",
- field->type.u.basic.string.encoding == ustctl_encode_ASCII ?
+ "string%s _%s;\n",
+ field->type.u.string.encoding == lttng_ust_ctl_encode_ASCII ?
" { encoding = ASCII; }" : "",
field->name);
+ (*iter_field)++;
+ break;
+ case lttng_ust_ctl_atype_variant:
+ ret = _lttng_variant_statedump(session,
+ field->type.u.legacy.variant.nr_choices,
+ field->type.u.legacy.variant.tag_name,
+ 0,
+ fields, nr_fields, iter_field, nesting);
+ if (ret) {
+ goto end;
+ }
+ break;
+ case lttng_ust_ctl_atype_variant_nestable:
+ ret = _lttng_variant_statedump(session,
+ field->type.u.variant_nestable.nr_choices,
+ field->type.u.variant_nestable.tag_name,
+ field->type.u.variant_nestable.alignment,
+ fields, nr_fields, iter_field, nesting);
+ if (ret) {
+ goto end;
+ }
+ break;
+ case lttng_ust_ctl_atype_struct:
+ if (field->type.u.legacy._struct.nr_fields != 0) {
+ /* Currently only 0-length structures are supported. */
+ ret = -EINVAL;
+ goto end;
+ }
+ ret = print_tabs(session, nesting);
+ if (ret) {
+ goto end;
+ }
+ ret = lttng_metadata_printf(session,
+ "struct {} _%s;\n",
+ field->name);
+ (*iter_field)++;
+ break;
+ case lttng_ust_ctl_atype_struct_nestable:
+ if (field->type.u.struct_nestable.nr_fields != 0) {
+ /* Currently only 0-length structures are supported. */
+ ret = -EINVAL;
+ goto end;
+ }
+ ret = print_tabs(session, nesting);
+ if (ret) {
+ goto end;
+ }
+ if (field->type.u.struct_nestable.alignment) {
+ ret = lttng_metadata_printf(session,
+ "struct {} align(%u) _%s;\n",
+ field->type.u.struct_nestable.alignment * CHAR_BIT,
+ field->name);
+ if (ret) {
+ goto end;
+ }
+ } else {
+ ret = lttng_metadata_printf(session,
+ "struct {} _%s;\n",
+ field->name);
+ }
+ (*iter_field)++;
+ break;
+ case lttng_ust_ctl_atype_enum_nestable:
+ {
+ const struct lttng_ust_ctl_field *container_field;
+ const struct lttng_ust_ctl_type *container_type;
+
+ (*iter_field)++;
+ if (*iter_field >= nr_fields) {
+ ret = -EOVERFLOW;
+ goto end;
+ }
+ container_field = &fields[*iter_field];
+ container_type = &container_field->type;
+
+ /* Only integers are supported as container types. */
+ if (container_type->atype != lttng_ust_ctl_atype_integer) {
+ ret = -EINVAL;
+ goto end;
+ }
+ ret = ust_metadata_enum_statedump(session,
+ field->type.u.enum_nestable.name,
+ field->type.u.enum_nestable.id,
+ &container_type->u.integer,
+ field->name, iter_field, nesting);
break;
+ }
default:
- return -EINVAL;
+ ret = -EINVAL;
}
+end:
return ret;
}
static
int _lttng_context_metadata_statedump(struct ust_registry_session *session,
size_t nr_ctx_fields,
- struct ustctl_field *ctx)
+ struct lttng_ust_ctl_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;
}
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;
}
event->name,
event->id,
chan->chan_id);
- if (ret)
+ if (ret) {
goto end;
+ }
ret = lttng_metadata_printf(session,
" loglevel = %d;\n",
- event->loglevel);
- if (ret)
+ event->loglevel_value);
+ if (ret) {
goto end;
+ }
if (event->model_emf_uri) {
ret = lttng_metadata_printf(session,
" model.emf.uri = \"%s\";\n",
event->model_emf_uri);
- if (ret)
+ if (ret) {
goto end;
+ }
}
-#if 0 /* context for events not supported */
- if (event->ctx) {
- ret = lttng_metadata_printf(session,
- " context := struct {\n");
- if (ret)
- goto end;
- }
- ret = _lttng_context_metadata_statedump(session, event->ctx);
- if (ret)
- goto end;
- if (event->ctx) {
- ret = lttng_metadata_printf(session,
- " };\n");
- if (ret)
- goto end;
- }
-#endif
ret = lttng_metadata_printf(session,
" fields := struct {\n"
);
- if (ret)
+ if (ret) {
goto end;
+ }
ret = _lttng_fields_metadata_statedump(session, event);
- if (ret)
+ if (ret) {
goto end;
+ }
ret = lttng_metadata_printf(session,
" };\n"
"};\n\n");
- if (ret)
+ if (ret) {
goto end;
+ }
event->metadata_dumped = 1;
end:
" event.header := %s;\n"
" packet.context := struct packet_context;\n",
chan->chan_id,
- chan->header_type == USTCTL_CHANNEL_HEADER_COMPACT ?
+ chan->header_type == LTTNG_UST_CTL_CHANNEL_HEADER_COMPACT ?
"struct event_header_compact" :
"struct event_header_large");
- if (ret)
+ if (ret) {
goto end;
+ }
if (chan->ctx_fields) {
ret = lttng_metadata_printf(session,
" event.context := struct {\n");
- if (ret)
+ if (ret) {
goto end;
+ }
}
ret = _lttng_context_metadata_statedump(session,
chan->nr_ctx_fields,
chan->ctx_fields);
- if (ret)
+ if (ret) {
goto end;
+ }
if (chan->ctx_fields) {
ret = lttng_metadata_printf(session,
" };\n");
- if (ret)
+ if (ret) {
goto end;
+ }
}
ret = lttng_metadata_printf(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"
);
}
+/*
+ * The offset between monotonic and realtime clock can be negative if
+ * the system sets the REALTIME clock to 0 after boot.
+ */
static
int measure_single_clock_offset(struct offset_sample *sample)
{
- uint64_t offset, monotonic[2], measure_delta, realtime;
+ uint64_t monotonic_avg, monotonic[2], measure_delta, realtime;
uint64_t tcf = trace_clock_freq();
struct timespec rts = { 0, 0 };
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;
}
*/
return 0;
}
- offset = (monotonic[0] + monotonic[1]) >> 1;
+ monotonic_avg = (monotonic[0] + monotonic[1]) >> 1;
realtime = (uint64_t) rts.tv_sec * tcf;
if (tcf == NSEC_PER_SEC) {
realtime += rts.tv_nsec;
} else {
realtime += (uint64_t) rts.tv_nsec * tcf / NSEC_PER_SEC;
}
- offset = realtime - offset;
- sample->offset = offset;
+ sample->offset = (int64_t) realtime - monotonic_avg;
sample->measure_delta = measure_delta;
return 0;
}
* Approximation of NTP time of day to clock monotonic correlation,
* taken at start of trace. Keep the measurement that took the less time
* to complete, thus removing imprecision caused by preemption.
+ * May return a negative offset.
*/
static
-uint64_t measure_clock_offset(void)
+int64_t measure_clock_offset(void)
{
int i;
struct offset_sample offset_best_sample = {
return offset_best_sample.offset;
}
+static
+int print_metadata_session_information(struct ust_registry_session *registry)
+{
+ int ret;
+ struct ltt_session *session = NULL;
+ char creation_datetime[ISO8601_STR_LEN];
+
+ rcu_read_lock();
+ session = session_find_by_id(registry->tracing_id);
+ if (!session) {
+ ret = -1;
+ goto error;
+ }
+
+ /* Print the trace name */
+ ret = lttng_metadata_printf(registry, " trace_name = \"");
+ if (ret) {
+ goto error;
+ }
+
+ /*
+ * This is necessary since the creation time is present in the session
+ * name when it is generated.
+ */
+ if (session->has_auto_generated_name) {
+ ret = print_escaped_ctf_string(registry, DEFAULT_SESSION_NAME);
+ } else {
+ ret = print_escaped_ctf_string(registry, session->name);
+ }
+ if (ret) {
+ goto error;
+ }
+
+ ret = lttng_metadata_printf(registry, "\";\n");
+ if (ret) {
+ goto error;
+ }
+
+ /* Prepare creation time */
+ ret = time_to_iso8601_str(session->creation_time, creation_datetime,
+ sizeof(creation_datetime));
+ if (ret) {
+ goto error;
+ }
+
+ /* Output the reste of the information */
+ ret = lttng_metadata_printf(registry,
+ " trace_creation_datetime = \"%s\";\n"
+ " hostname = \"%s\";\n",
+ creation_datetime, session->hostname);
+ if (ret) {
+ goto error;
+ }
+
+error:
+ if (session) {
+ session_put(session);
+ }
+ rcu_read_unlock();
+ return ret;
+}
+
+static
+int print_metadata_app_information(struct ust_registry_session *registry,
+ struct ust_app *app)
+{
+ int ret;
+ char datetime[ISO8601_STR_LEN];
+
+ if (!app) {
+ ret = 0;
+ goto end;
+ }
+
+ ret = time_to_iso8601_str(
+ app->registration_time, datetime, sizeof(datetime));
+ if (ret) {
+ goto end;
+ }
+
+ ret = lttng_metadata_printf(registry,
+ " tracer_patchlevel = %u;\n"
+ " vpid = %d;\n"
+ " procname = \"%s\";\n"
+ " vpid_datetime = \"%s\";\n",
+ app->version.patchlevel, (int) app->pid, app->name,
+ datetime);
+
+end:
+ return ret;
+}
+
/*
* Should be called with session registry mutex held.
*/
uint32_t major,
uint32_t minor)
{
- unsigned char *uuid_c;
- char uuid_s[UUID_STR_LEN],
- clock_uuid_s[UUID_STR_LEN];
+ char uuid_s[LTTNG_UUID_STR_LEN],
+ clock_uuid_s[LTTNG_UUID_STR_LEN];
int ret = 0;
- char hostname[HOST_NAME_MAX];
- assert(session);
+ LTTNG_ASSERT(session);
- uuid_c = session->uuid;
-
- snprintf(uuid_s, sizeof(uuid_s),
- "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
- uuid_c[0], uuid_c[1], uuid_c[2], uuid_c[3],
- uuid_c[4], uuid_c[5], uuid_c[6], uuid_c[7],
- uuid_c[8], uuid_c[9], uuid_c[10], uuid_c[11],
- uuid_c[12], uuid_c[13], uuid_c[14], uuid_c[15]);
+ lttng_uuid_to_str(session->uuid, uuid_s);
/* For crash ABI */
ret = lttng_metadata_printf(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,
uuid_s,
session->byte_order == BIG_ENDIAN ? "be" : "le"
);
- if (ret)
+ if (ret) {
goto end;
+ }
- /* ignore error, just use empty string if error. */
- hostname[0] = '\0';
- ret = gethostname(hostname, sizeof(hostname));
- if (ret && errno == ENAMETOOLONG)
- hostname[HOST_NAME_MAX - 1] = '\0';
ret = lttng_metadata_printf(session,
"env {\n"
- " hostname = \"%s\";\n"
" domain = \"ust\";\n"
" tracer_name = \"lttng-ust\";\n"
" tracer_major = %u;\n"
- " tracer_minor = %u;\n",
- hostname,
+ " tracer_minor = %u;\n"
+ " tracer_buffering_scheme = \"%s\";\n"
+ " tracer_buffering_id = %u;\n"
+ " architecture_bit_width = %u;\n",
major,
- minor
- );
- if (ret)
+ minor,
+ app ? "pid" : "uid",
+ app ? (int) app->pid : (int) session->tracing_uid,
+ session->bits_per_long);
+ if (ret) {
+ goto end;
+ }
+
+ ret = print_metadata_session_information(session);
+ if (ret) {
goto end;
+ }
/*
* If per-application registry, we can output extra information
* about the application.
*/
- if (app) {
- ret = lttng_metadata_printf(session,
- " tracer_patchlevel = %u;\n"
- " vpid = %d;\n"
- " procname = \"%s\";\n",
- app->version.patchlevel,
- (int) app->pid,
- app->name
- );
- if (ret)
- goto end;
+ ret = print_metadata_app_information(session, app);
+ if (ret) {
+ goto end;
}
ret = lttng_metadata_printf(session,
"};\n\n"
);
- if (ret)
+ if (ret) {
goto end;
-
+ }
ret = lttng_metadata_printf(session,
"clock {\n"
" name = \"%s\";\n",
trace_clock_name()
);
- if (ret)
+ if (ret) {
goto end;
+ }
if (!trace_clock_uuid(clock_uuid_s)) {
ret = lttng_metadata_printf(session,
" uuid = \"%s\";\n",
clock_uuid_s
);
- if (ret)
+ if (ret) {
goto end;
+ }
}
ret = lttng_metadata_printf(session,
" description = \"%s\";\n"
" freq = %" PRIu64 "; /* Frequency, in Hz */\n"
" /* clock value offset from Epoch is: offset * (1/freq) */\n"
- " offset = %" PRIu64 ";\n"
+ " offset = %" PRId64 ";\n"
"};\n\n",
trace_clock_description(),
trace_clock_freq(),
measure_clock_offset()
);
- if (ret)
+ if (ret) {
goto end;
+ }
ret = lttng_metadata_printf(session,
"typealias integer {\n"
session->uint64_t_alignment,
trace_clock_name()
);
- if (ret)
+ if (ret) {
goto end;
+ }
ret = _lttng_stream_packet_context_declare(session);
- if (ret)
+ if (ret) {
goto end;
+ }
ret = _lttng_event_header_declare(session);
- if (ret)
+ if (ret) {
goto end;
+ }
end:
return ret;
projects / lttng-tools.git / blobdiff