/*
- * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
- * Copyright (C) 2011-2013 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * SPDX-License-Identifier: GPL-2.0-only
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License only.
- *
- * 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.
- *
- * 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.
+ * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
+ * Copyright (C) 2011-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
#ifndef _LTTNG_UST_CTL_H
#include <limits.h>
#include <stddef.h>
#include <stdint.h>
+#include <stdbool.h>
#include <sys/types.h>
#include <lttng/ust-abi.h>
struct lttng_ust_object_data **context_data);
int ustctl_set_filter(int sock, struct lttng_ust_filter_bytecode *bytecode,
struct lttng_ust_object_data *obj_data);
+int ustctl_set_capture(int sock, struct lttng_ust_capture_bytecode *bytecode,
+ struct lttng_ust_object_data *obj_data);
int ustctl_set_exclusion(int sock, struct lttng_ust_event_exclusion *exclusion,
struct lttng_ust_object_data *obj_data);
int ustctl_start_session(int sock, int handle);
int ustctl_stop_session(int sock, int handle);
+/*
+ * ustctl_create_event notifier_group creates a event notifier group. It
+ * establishes the connection with the application by providing a file
+ * descriptor of the pipe to be used by the application when a event notifier
+ * of that group is fired. It returns a handle to be used when creating event
+ * notifier in that group.
+ */
+int ustctl_create_event_notifier_group(int sock, int pipe_fd,
+ struct lttng_ust_object_data **event_notifier_group);
+
+/*
+ * ustctl_create_event notifier creates a event notifier in a event notifier
+ * group giving a event notifier description and a event notifier group handle.
+ * It returns a event notifier handle to be used when enabling the event
+ * notifier, attaching filter, attaching exclusion, and disabling the event
+ * notifier.
+ */
+int ustctl_create_event_notifier(int sock,
+ struct lttng_ust_event_notifier *event_notifier,
+ struct lttng_ust_object_data *event_notifier_group,
+ struct lttng_ust_object_data **event_notifier_data);
+
/*
* ustctl_tracepoint_list returns a tracepoint list handle, or negative
* error value.
enum ustctl_channel_header header_type,
int ret_code); /* return code. 0 ok, negative error */
+/*
+ * Counter API.
+ */
+
+enum ustctl_counter_bitness {
+ USTCTL_COUNTER_BITNESS_32 = 0,
+ USTCTL_COUNTER_BITNESS_64 = 1,
+};
+
+enum ustctl_counter_arithmetic {
+ USTCTL_COUNTER_ARITHMETIC_MODULAR = 0,
+ USTCTL_COUNTER_ARITHMETIC_SATURATION = 1,
+};
+
+/* Used as alloc flags. */
+enum ustctl_counter_alloc {
+ USTCTL_COUNTER_ALLOC_PER_CPU = (1 << 0),
+ USTCTL_COUNTER_ALLOC_GLOBAL = (1 << 1),
+};
+
+struct ustctl_daemon_counter;
+
+int ustctl_get_nr_cpu_per_counter(void);
+
+struct ustctl_counter_dimension {
+ uint64_t size;
+ uint64_t underflow_index;
+ uint64_t overflow_index;
+ uint8_t has_underflow;
+ uint8_t has_overflow;
+};
+
+struct ustctl_daemon_counter *
+ ustctl_create_counter(size_t nr_dimensions,
+ const struct ustctl_counter_dimension *dimensions,
+ int64_t global_sum_step,
+ int global_counter_fd,
+ int nr_counter_cpu_fds,
+ const int *counter_cpu_fds,
+ enum ustctl_counter_bitness bitness,
+ enum ustctl_counter_arithmetic arithmetic,
+ uint32_t alloc_flags);
+
+int ustctl_create_counter_data(struct ustctl_daemon_counter *counter,
+ struct lttng_ust_object_data **counter_data);
+
+int ustctl_create_counter_global_data(struct ustctl_daemon_counter *counter,
+ struct lttng_ust_object_data **counter_global_data);
+int ustctl_create_counter_cpu_data(struct ustctl_daemon_counter *counter, int cpu,
+ struct lttng_ust_object_data **counter_cpu_data);
+
+/*
+ * Each counter data and counter cpu data created need to be destroyed
+ * before calling ustctl_destroy_counter().
+ */
+void ustctl_destroy_counter(struct ustctl_daemon_counter *counter);
+
+int ustctl_send_counter_data_to_ust(int sock, int parent_handle,
+ struct lttng_ust_object_data *counter_data);
+int ustctl_send_counter_global_data_to_ust(int sock,
+ struct lttng_ust_object_data *counter_data,
+ struct lttng_ust_object_data *counter_global_data);
+int ustctl_send_counter_cpu_data_to_ust(int sock,
+ struct lttng_ust_object_data *counter_data,
+ struct lttng_ust_object_data *counter_cpu_data);
+
+int ustctl_counter_read(struct ustctl_daemon_counter *counter,
+ const size_t *dimension_indexes,
+ int cpu, int64_t *value,
+ bool *overflow, bool *underflow);
+int ustctl_counter_aggregate(struct ustctl_daemon_counter *counter,
+ const size_t *dimension_indexes,
+ int64_t *value,
+ bool *overflow, bool *underflow);
+int ustctl_counter_clear(struct ustctl_daemon_counter *counter,
+ const size_t *dimension_indexes);
+
#endif /* _LTTNG_UST_CTL_H */
projects / lttng-ust.git / blobdiff