| libtracecmd(3) |
| ============= |
| |
| NAME |
| ---- |
| libtracecmd - trace-cmd library APIs |
| |
| SYNOPSIS |
| -------- |
| [verse] |
| -- |
| *#include <trace-cmd.h>* |
| |
| Open and close trace file: |
| struct tracecmd_input pass:[*]*tracecmd_open*(const char pass:[*]_file_, int _flags_); |
| struct tracecmd_input pass:[*]*tracecmd_open_fd*(int _fd_, int _flags_); |
| struct tracecmd_input pass:[*]*tracecmd_open_head*(const char pass:[*]_file_, int _flags_); |
| void *tracecmd_close*(struct tracecmd_input pass:[*]_handle_); |
| |
| Read tracing records from a trace file: |
| int *tracecmd_init_data*(struct tracecmd_input pass:[*]_handle_); |
| struct tep_record pass:[*]*tracecmd_read_cpu_first*(struct tracecmd_input pass:[*]_handle_, int _cpu_); |
| struct tep_record pass:[*]*tracecmd_read_data*(struct tracecmd_input pass:[*]_handle_, int _cpu_); |
| struct tep_record pass:[*]*tracecmd_read_at*(struct tracecmd_input pass:[*]_handle_, unsigned long long _offset_, int pass:[*]_cpu_); |
| void *tracecmd_free_record*(struct tep_record pass:[*]_record_); |
| struct tep_handle pass:[*]*tracecmd_get_tep*(struct tracecmd_input pass:[*]_handle_); |
| |
| Read tracing instances from a trace file: |
| int *tracecmd_buffer_instances*(struct tracecmd_input pass:[*]_handle_); |
| const char pass:[*]*tracecmd_buffer_instance_name*(struct tracecmd_input pass:[*]_handle_, int _indx_); |
| struct tracecmd_input pass:[*]*tracecmd_buffer_instance_handle*(struct tracecmd_input pass:[*]_handle_, int _indx_); |
| |
| Get traceing peer information from a trace file: |
| unsigned long long *tracecmd_get_traceid*(struct tracecmd_input pass:[*]_handle_); |
| int *tracecmd_get_guest_cpumap*(struct tracecmd_input pass:[*]_handle_, unsigned long long _trace_id_, const char pass:[*]pass:[*]_name_, int pass:[*]_vcpu_count_, const int pass:[*]pass:[*]_cpu_pid_); |
| |
| Control library logs: |
| int *tracecmd_set_loglevel*(enum tep_loglevel _level_); |
| -- |
| |
| DESCRIPTION |
| ----------- |
| The libtracecmd(3) library provides APIs to read, parse and write |
| _trace-cmd.dat(5)_ files, recorded with _trace-cmd(1)_ application and containing |
| tracing information from ftrace, the official Linux kernel tracer. |
| |
| FILES |
| ----- |
| [verse] |
| -- |
| *trace-cmd.h* |
| Header file to include in order to have access to the library APIs. |
| *-ltracecmd* |
| Linker switch to add when building a program that uses the library. |
| -- |
| |
| SEE ALSO |
| -------- |
| _libtraceevent(3)_ |
| _libtracefs(3)_ |
| _trace-cmd(1)_ |
| _trace-cmd.dat(5)_ |
| |
| AUTHOR |
| ------ |
| [verse] |
| -- |
| *Steven Rostedt* <[email protected]> |
| *Tzvetomir Stoyanov* <[email protected]> |
| -- |
| REPORTING BUGS |
| -------------- |
| Report bugs to <[email protected]> |
| |
| LICENSE |
| ------- |
| libtracecmd is Free Software licensed under the GNU LGPL 2.1 |
| |
| RESOURCES |
| --------- |
| https://git.kernel.org/pub/scm/utils/trace-cmd/trace-cmd.git/ |
| |
| COPYING |
| ------- |
| Copyright \(C) 2020 VMware, Inc. Free use of this software is granted under |
| the terms of the GNU Public License (GPL). |
