--- /dev/null
+/*
+ * event-internal.h
+ *
+ * Linux Trace Toolkit Control Library
+ *
+ * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#ifndef LTTNG_EVENT_INTERNAL_H
+#define LTTNG_EVENT_INTERNAL_H
+
+#include <common/macros.hpp>
+#include <lttng/event.h>
+#include <lttng/lttng-error.h>
+
+struct lttng_event_exclusion;
+struct lttng_userspace_probe_location;
+struct lttng_dynamic_buffer;
+struct lttng_buffer_view;
+
+struct lttng_event_comm {
+ int8_t event_type;
+ int8_t loglevel_type;
+ int32_t loglevel;
+ int8_t enabled;
+ int32_t pid;
+ uint32_t flags;
+
+ /* Payload. */
+ /* Includes terminator `\0`. */
+ uint32_t name_len;
+ uint32_t exclusion_count;
+ /* Includes terminator `\0`. */
+ uint32_t filter_expression_len;
+ uint32_t bytecode_len;
+
+ /* Type specific payload. */
+ uint32_t userspace_probe_location_len;
+ uint32_t lttng_event_probe_attr_len;
+ uint32_t lttng_event_function_attr_len;
+
+ /*
+ * Contain:
+ * - name [name_len],
+ * - exclusions if any
+ * - char filter_expression[filter_expression_len],
+ * - unsigned char filter_bytecode[bytecode_len],
+ * - userspace probe location [userspace_probe_location_len],
+ * - probe or ftrace based on event type.
+ */
+
+ char payload[];
+} LTTNG_PACKED;
+
+struct lttng_event_exclusion_comm {
+ /* Includes terminator `\0`. */
+ uint32_t len;
+ char payload [];
+} LTTNG_PACKED;
+
+struct lttng_event_probe_attr_comm {
+ uint64_t addr;
+ uint64_t offset;
+ /* Includes terminator `\0`. */
+ uint32_t symbol_name_len;
+
+ char payload[];
+} LTTNG_PACKED;
+
+struct lttng_event_function_attr_comm {
+ /* Includes terminator `\0`. */
+ uint32_t symbol_name_len;
+
+ char payload[];
+} LTTNG_PACKED;
+
+struct lttng_event_context_comm {
+ uint32_t type;
+ /*
+ * Depending on the type.
+ * For:
+ * - LTTNG_EVENT_CONTEXT_APP_CONTEXT.
+ *
+ * -> struct lttng_event_context_app_comm
+ *
+ * For
+ * - LTTNG_EVENT_CONTEXT_PERF_COUNTER,
+ * - LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER,
+ * - LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER.
+ *
+ * -> struct lttng_event_context_perf_counter_comm
+ *
+ * Other type -> no payload.
+ */
+ char payload[];
+} LTTNG_PACKED;
+
+struct lttng_event_context_perf_counter_comm {
+ uint32_t type;
+ uint64_t config;
+ /* Includes terminator `\0`. */
+ uint32_t name_len;
+ /*
+ * char name [name_len]
+ */
+ char payload[];
+} LTTNG_PACKED;
+
+struct lttng_event_context_app_comm {
+ /* Includes terminator `\0`. */
+ uint32_t provider_name_len;
+ /* Includes terminator `\0`. */
+ uint32_t ctx_name_len;
+ /*
+ * provider name [provider_name_len]
+ * ctx name [ctx_name_len]
+ */
+ char payload[];
+} LTTNG_PACKED;
+
+struct lttng_event_field_comm {
+ uint8_t type;
+ uint8_t nowrite;
+ /* Includes terminator `\0`. */
+ uint32_t name_len;
+ uint32_t event_len;
+
+ /*
+ * - name [name_len]
+ * - lttng_event object
+ */
+ char payload[];
+} LTTNG_PACKED;
+
+struct lttng_event_extended {
+ /*
+ * exclusions and filter_expression are only set when the lttng_event
+ * was created/allocated by a list operation. These two elements must
+ * not be free'd as they are part of the same contiguous buffer that
+ * contains all events returned by the listing.
+ */
+ char *filter_expression;
+ struct {
+ unsigned int count;
+ /* Array of strings of fixed LTTNG_SYMBOL_NAME_LEN length. */
+ char *strings;
+ } exclusions;
+ struct lttng_userspace_probe_location *probe_location;
+};
+
+struct lttng_event *lttng_event_copy(const struct lttng_event *event);
+
+ssize_t lttng_event_create_from_payload(struct lttng_payload_view *view,
+ struct lttng_event **out_event,
+ struct lttng_event_exclusion **out_exclusion,
+ char **out_filter_expression,
+ struct lttng_bytecode **out_bytecode);
+
+int lttng_event_serialize(const struct lttng_event *event,
+ unsigned int exclusion_count,
+ char **exclusion_list,
+ char *filter_expression,
+ size_t bytecode_len,
+ struct lttng_bytecode *bytecode,
+ struct lttng_payload *payload);
+
+ssize_t lttng_event_context_create_from_payload(
+ struct lttng_payload_view *view,
+ struct lttng_event_context **event_ctx);
+
+int lttng_event_context_serialize(struct lttng_event_context *context,
+ struct lttng_payload *payload);
+
+void lttng_event_context_destroy(struct lttng_event_context *context);
+
+enum lttng_error_code lttng_events_create_and_flatten_from_payload(
+ struct lttng_payload_view *view,
+ unsigned int count,
+ struct lttng_event **events);
+
+ssize_t lttng_event_field_create_from_payload(
+ struct lttng_payload_view *view,
+ struct lttng_event_field **field);
+
+int lttng_event_field_serialize(const struct lttng_event_field *field,
+ struct lttng_payload *payload);
+
+enum lttng_error_code lttng_event_fields_create_and_flatten_from_payload(
+ struct lttng_payload_view *view,
+ unsigned int count,
+ struct lttng_event_field **fields);
+
+#endif /* LTTNG_EVENT_INTERNAL_H */
projects / lttng-tools.git / blobdiff