Tool Functions

The Tracer traces the running status of C and C++ applications. It records the call stack and performance information during application running with low performance overhead.

To run the tool, link to the libstdc++.so library whose version is 6.0.28 or later and the glibc library whose version is 2.17 or later.

Prerequisites

You have installed the Tracer. See Installing a Compressed Package (.tar.gz).
The tool is presented in an independent package (logger_device_arm.tar.gz). Decompress the package and switch to the tool directory.

Command Function

The Tracer parses the user-defined configuration file (.ini) and generates a header file. Users can write header file APIs into program code to record log information.
In addition, the Tracer integrates the CTF deserialization function to parse and output log files.

Syntax

./tracelog [-h | --help] COMMAND [ARGS]

Parameter Description

**Table 1** Parameter description
Parameter	Option	Description
-h/--help	-	Obtains help information.
generator	-	Generates the code submodule.
parser	-	Log parsing submodule.

Example

View the functions of the JVM Jitter Detector:

1	./tracelog -h

Command output:

Usage: tracelog [-h | --help] COMMAND [ARGS]

The most commonly used tracelog sub commands are:
   help        Get help information
   generator   Run a command for generate a header file
   parser      Run a command for parsing logs

See 'tracelog COMMAND --help' for more information on a specific command.

Parent topic: Tracer