#include <common/macros.h>
#include <common/utils.h>
#include <common/dynamic-buffer.h>
+#include <common/dynamic-array.h>
#include <common/compat/getenv.h>
#include <lttng/lttng-error.h>
#include <libxml/parser.h>
const char * const config_element_channel = "channel";
const char * const config_element_channels = "channels";
+const char * const config_element_map = "map";
+const char * const config_element_maps = "maps";
const char * const config_element_domain = "domain";
const char * const config_element_domains = "domains";
const char * const config_element_event = "event";
const char * const config_output_type_splice = "SPLICE";
const char * const config_output_type_mmap = "MMAP";
+LTTNG_HIDDEN const char * const config_element_bitness = "bitness";
+LTTNG_HIDDEN const char * const config_element_boundary_policy = "boundary_policy";
+LTTNG_HIDDEN const char * const config_element_coalesce_hits = "coalesce_hits";
+LTTNG_HIDDEN const char * const config_element_dimensions = "dimensions";
+LTTNG_HIDDEN const char * const config_element_dimension = "dimension";
+LTTNG_HIDDEN const char * const config_element_dimension_size = "size";
+
+LTTNG_HIDDEN const char * const config_boundary_policy_overflow = "OVERFLOW";
+
const char * const config_loglevel_type_all = "ALL";
const char * const config_loglevel_type_range = "RANGE";
const char * const config_loglevel_type_single = "SINGLE";
return ret;
}
+static
+int process_channel_node(xmlNodePtr channel_node, struct lttng_handle *handle,
+ struct lttng_domain *domain,
+ enum lttng_domain_type original_domain)
+{
+ int ret;
+ struct lttng_channel *channel = NULL;
+ xmlNodePtr contexts_node = NULL;
+ xmlNodePtr events_node = NULL;
+ xmlNodePtr channel_attr_node;
+
+ /*
+ * Channels of the "agent" types cannot be created directly.
+ * They are meant to be created implicitly through the
+ * activation of events in their domain. However, a user
+ * can override the default channel configuration attributes
+ * by creating the underlying UST channel _before_ enabling
+ * an agent domain event.
+ *
+ * Hence, the channel's type is substituted before the creation
+ * and restored by the time the events are created.
+ */
+ switch (domain->type) {
+ case LTTNG_DOMAIN_JUL:
+ case LTTNG_DOMAIN_LOG4J:
+ case LTTNG_DOMAIN_PYTHON:
+ domain->type = LTTNG_DOMAIN_UST;
+ default:
+ break;
+ }
+
+ channel = lttng_channel_create(domain);
+ if (!channel) {
+ ret = -1;
+ goto end;
+ }
+
+ for (channel_attr_node = xmlFirstElementChild(channel_node);
+ channel_attr_node; channel_attr_node =
+ xmlNextElementSibling(channel_attr_node)) {
+ ret = process_channel_attr_node(channel_attr_node,
+ channel, &contexts_node, &events_node);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ ret = lttng_enable_channel(handle, channel);
+ if (ret < 0) {
+ goto end;
+ }
+
+ /* Restore the original channel domain-> */
+ domain->type = original_domain;
+
+ ret = process_events_node(events_node, handle, channel->name);
+ if (ret) {
+ goto end;
+ }
+
+ ret = process_contexts_node(contexts_node, handle,
+ channel->name);
+ if (ret) {
+ goto end;
+ }
+
+end:
+ lttng_channel_destroy(channel);
+ return ret;
+}
+
+static int process_dimension_node(xmlNodePtr dimension_node,
+ struct lttng_dynamic_array *dimension_sizes)
+{
+ int ret;
+ xmlNodePtr node;
+ xmlChar *size_str = NULL;
+ uint64_t size;
+
+ assert(strcmp((const char *) dimension_node->name,
+ config_element_dimension) == 0);
+ assert(dimension_sizes->element_size == sizeof(uint64_t));
+
+ for (node = xmlFirstElementChild(dimension_node); node;
+ node = xmlNextElementSibling(node)) {
+ if (strcmp((const char *) node->name,
+ config_element_dimension_size) == 0) {
+ assert(!size_str);
+ size_str = xmlNodeGetContent(node);
+ if (!size_str) {
+ ERR("Failed to get dimension size node content.");
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
+
+ ret = parse_uint(size_str, &size);
+ assert(!ret);
+
+ ret = lttng_dynamic_array_add_element(dimension_sizes, &size);
+ if (ret) {
+ goto end;
+ }
+ } else {
+ assert(false);
+ }
+ }
+
+ ret = 0;
+
+end:
+ xmlFree(size_str);
+ return ret;
+}
+
+/* `dimensions_sizes` must be initialized to hold uint64_t elements. */
+
+static int process_dimensions_node(xmlNodePtr dimensions_node,
+ struct lttng_dynamic_array *dimension_sizes)
+{
+ xmlNodePtr dimension_node;
+ int ret = 0;
+
+ assert(strcmp((const char *) dimensions_node->name,
+ config_element_dimensions) == 0);
+ assert(dimension_sizes->element_size == sizeof(uint64_t));
+ assert(lttng_dynamic_array_get_count(dimension_sizes) == 0);
+
+ for (dimension_node = xmlFirstElementChild(dimensions_node);
+ dimension_node; dimension_node = xmlNextElementSibling(
+ dimension_node)) {
+ ret = process_dimension_node(dimension_node, dimension_sizes);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ assert(lttng_dynamic_array_get_count(dimension_sizes) > 0);
+
+end:
+ return ret;
+}
+
+static int process_map_node(xmlNodePtr map_node, struct lttng_handle *handle)
+{
+ int ret;
+ xmlNodePtr node;
+ xmlChar *name = NULL;
+ xmlChar *enabled_str = NULL;
+ int enabled;
+ xmlChar *bitness_str = NULL;
+ enum lttng_map_bitness bitness = LTTNG_MAP_BITNESS_32BITS;
+ xmlChar *boundary_policy_str = NULL;
+ enum lttng_map_boundary_policy boundary_policy = LTTNG_MAP_BOUNDARY_POLICY_OVERFLOW;
+ xmlChar *coalesce_hits_str = NULL;
+ int coalesce_hits;
+ enum lttng_map_status map_status;
+ struct lttng_map *map = NULL;
+ struct lttng_dynamic_array dimension_sizes;
+ enum lttng_error_code error_code;
+
+ assert(strcmp((const char *) map_node->name, config_element_map) == 0);
+
+ lttng_dynamic_array_init(&dimension_sizes, sizeof(uint64_t), NULL);
+
+ for (node = xmlFirstElementChild(map_node); node;
+ node = xmlNextElementSibling(node)) {
+ if (strcmp((const char *) node->name, config_element_name) ==
+ 0) {
+ assert(!name);
+ name = xmlNodeGetContent(node);
+ if (!name) {
+ ERR("Failed to get map name node content.");
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
+ } else if (strcmp((const char *) node->name,
+ config_element_enabled) == 0) {
+ assert(!enabled_str);
+ enabled_str = xmlNodeGetContent(node);
+ if (!enabled_str) {
+ ERR("Failed to get map enabled node content.");
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
+
+ ret = parse_bool(enabled_str, &enabled);
+ assert(!ret);
+ } else if (strcmp((const char *) node->name,
+ config_element_bitness) == 0) {
+ assert(!bitness_str);
+ bitness_str = xmlNodeGetContent(node);
+ if (!bitness_str) {
+ ERR("Failed to get map bitness node content.");
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
+
+ if (strcmp((const char *) bitness_str, "32") == 0) {
+ bitness = LTTNG_MAP_BITNESS_32BITS;
+ } else {
+ assert(strcmp((const char *) bitness_str,
+ "64") == 0);
+ bitness = LTTNG_MAP_BITNESS_64BITS;
+ }
+ } else if (strcmp((const char *) node->name,
+ config_element_boundary_policy) ==
+ 0) {
+ assert(!boundary_policy_str);
+ boundary_policy_str = xmlNodeGetContent(node);
+ if (!boundary_policy_str) {
+ ERR("Failed to get map boundary policy node content.");
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
+
+ assert(strcmp((const char *) boundary_policy_str,
+ config_boundary_policy_overflow) ==
+ 0);
+ boundary_policy = LTTNG_MAP_BOUNDARY_POLICY_OVERFLOW;
+ } else if (strcmp((const char *) node->name,
+ config_element_coalesce_hits) == 0) {
+ assert(!coalesce_hits_str);
+ coalesce_hits_str = xmlNodeGetContent(node);
+ if (!coalesce_hits_str) {
+ ERR("Failed to get map coalesce hits node content.");
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
+
+ ret = parse_bool(coalesce_hits_str, &coalesce_hits);
+ assert(!ret);
+ } else if (strcmp((const char *) node->name,
+ config_element_dimensions) == 0) {
+ ret = process_dimensions_node(node, &dimension_sizes);
+ if (ret) {
+ goto end;
+ }
+ } else {
+ assert(false);
+ }
+ }
+
+ assert(name);
+ map_status = lttng_map_create((const char *) name,
+ lttng_dynamic_array_get_count(&dimension_sizes),
+ (uint64_t *) dimension_sizes.buffer.data,
+ handle->domain.type, handle->domain.buf_type, bitness,
+ boundary_policy, coalesce_hits, &map);
+ if (map_status != LTTNG_MAP_STATUS_OK) {
+ ERR("Failed to create map.");
+ ret = -LTTNG_ERR_UNK;
+ goto end;
+ }
+
+ error_code = lttng_add_map(handle, map);
+ if (error_code != LTTNG_OK) {
+ ERR("Adding map \"%s\": %s", (const char *) name,
+ lttng_strerror(error_code));
+ ret = error_code;
+ goto end;
+ }
+
+ // FIXME: disabling the map after creating leaves a window of time
+ // where it is enabled, does it matter?
+ if (!enabled) {
+ ret = lttng_disable_map(handle, (const char *) name);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ ret = 0;
+
+end:
+ xmlFree(name);
+ xmlFree(enabled_str);
+ xmlFree(bitness_str);
+ xmlFree(boundary_policy_str);
+ xmlFree(coalesce_hits_str);
+ lttng_dynamic_array_reset(&dimension_sizes);
+ lttng_map_destroy(map);
+
+ return ret;
+}
+
static
int process_domain_node(xmlNodePtr domain_node, const char *session_name)
{
int ret;
struct lttng_domain domain = { 0 };
struct lttng_handle *handle = NULL;
- struct lttng_channel *channel = NULL;
xmlNodePtr channels_node = NULL;
+ xmlNodePtr maps_node = NULL;
xmlNodePtr trackers_node = NULL;
xmlNodePtr pid_tracker_node = NULL;
xmlNodePtr vpid_tracker_node = NULL;
}
}
- if (!channels_node) {
- goto end;
- }
-
- /* create all channels */
- for (node = xmlFirstElementChild(channels_node); node;
- node = xmlNextElementSibling(node)) {
- const enum lttng_domain_type original_domain = domain.type;
- xmlNodePtr contexts_node = NULL;
- xmlNodePtr events_node = NULL;
- xmlNodePtr channel_attr_node;
-
- /*
- * Channels of the "agent" types cannot be created directly.
- * They are meant to be created implicitly through the
- * activation of events in their domain. However, a user
- * can override the default channel configuration attributes
- * by creating the underlying UST channel _before_ enabling
- * an agent domain event.
- *
- * Hence, the channel's type is substituted before the creation
- * and restored by the time the events are created.
- */
- switch (domain.type) {
- case LTTNG_DOMAIN_JUL:
- case LTTNG_DOMAIN_LOG4J:
- case LTTNG_DOMAIN_PYTHON:
- domain.type = LTTNG_DOMAIN_UST;
- default:
- break;
- }
-
- channel = lttng_channel_create(&domain);
- if (!channel) {
- ret = -1;
- goto end;
- }
+ if (channels_node) {
+ /* create all channels */
+ for (node = xmlFirstElementChild(channels_node); node;
+ node = xmlNextElementSibling(node)) {
+ const enum lttng_domain_type original_domain = domain.type;
- for (channel_attr_node = xmlFirstElementChild(node);
- channel_attr_node; channel_attr_node =
- xmlNextElementSibling(channel_attr_node)) {
- ret = process_channel_attr_node(channel_attr_node,
- channel, &contexts_node, &events_node);
+ ret = process_channel_node(node, handle, &domain,
+ original_domain);
if (ret) {
goto end;
}
}
+ }
- ret = lttng_enable_channel(handle, channel);
- if (ret < 0) {
- goto end;
- }
-
- /* Restore the original channel domain. */
- domain.type = original_domain;
-
- ret = process_events_node(events_node, handle, channel->name);
- if (ret) {
- goto end;
+ /* get the maps node */
+ for (node = xmlFirstElementChild(domain_node); node;
+ node = xmlNextElementSibling(node)) {
+ if (!strcmp((const char *) node->name, config_element_maps)) {
+ maps_node = node;
+ break;
}
+ }
- ret = process_contexts_node(contexts_node, handle,
- channel->name);
- if (ret) {
- goto end;
+ if (maps_node) {
+ /* create all maps */
+ for (node = xmlFirstElementChild(maps_node); node;
+ node = xmlNextElementSibling(node)) {
+ ret = process_map_node(node, handle);
+ if (ret) {
+ goto end;
+ }
}
-
- lttng_channel_destroy(channel);
}
- channel = NULL;
/* get the trackers node */
for (node = xmlFirstElementChild(domain_node); node;
}
end:
- lttng_channel_destroy(channel);
lttng_destroy_handle(handle);
return ret;
}
projects / lttng-tools.git / blobdiff