X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=include%2Flttng%2Fevent-internal.hpp;fp=include%2Flttng%2Fevent-internal.hpp;h=daa8fa68e74a5167fe7e8caf4911c98c56d5d596;hp=0000000000000000000000000000000000000000;hb=c9e313bc594f40a86eed237dce222c0fc99c957f;hpb=4878de5c7deb512bbdac4fdfc498907efa06fb7c

diff --git a/include/lttng/event-internal.hpp b/include/lttng/event-internal.hpp
new file mode 100644
index 000000000..daa8fa68e
--- /dev/null
+++ b/include/lttng/event-internal.hpp
@@ -0,0 +1,196 @@
+/*
+ * 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 */