Trace Multiple Classes Or Methods Invoke Chain

Trace command syntax to Trace multiple classes or methods invoke chain. Copyable examples, output expectations, and common mistakes.

More Trace

Terminal

trace -E <class-pattern1>|<class-patter2> <method-pattern1>|<method-pattern2>|<method-pattern3>

trace -E <class-pattern1>|<class-patter2> <method-pattern1>|<method-pattern2>|<method-pattern3>

#!/bin/bash

# Trace Multiple Classes Or Methods Invoke Chain
trace -E {{class-pattern1}}|{{class-patter2}} {{method-pattern1}}|{{method-pattern2}}|{{method-pattern3}}

import subprocess

# Trace Multiple Classes Or Methods Invoke Chain
# Make sure to replace <placeholders> with actual values
def run_command():
    cmd = [
        "trace",
        "-E",
        "<class-pattern1>|<class-patter2>",
        "<method-pattern1>|<method-pattern2>|<method-pattern3>"
    ]
    
    try:
        print(f"Executing: {' '.join(cmd)}")
        subprocess.run(cmd, check=True)
    except subprocess.CalledProcessError as e:
        print(f"Error: {e}")
    except FileNotFoundError:
        print("Error: trace not found. Please install it first.")

if __name__ == "__main__":
    run_command()

Terminal Output

Expected runtime feedback

Simulated preview

Output

Tracing methods and classes:

Class/Method        | Location               | Invocation Count
--------------------|-----------------------|------------------
com.example.ClassA  | ClassA.java:22        | 5
com.example.ClassB  | ClassB.java:47        | 8
com.example.ClassC  | ClassC.java:31        | 3

Finished tracing!

Command Breakdown

What each part is doing

trace: Base Command; The executable that performs this operation. Here it runs Trace before the shell applies any redirect operators.
<class-pattern1>: class pattern1; The value supplied for class pattern1.
<class-patter2>: class patter2; The value supplied for class patter2.
<method-pattern1>: method pattern1; The value supplied for method pattern1.
<method-pattern2>: method pattern2; The value supplied for method pattern2.
<method-pattern3>: method pattern3; The value supplied for method pattern3.
-E: Command Option; Tool-specific option used by this command invocation.

How To Run

Execution path

Step 1
Run the command: `trace -E com.example.ClassA|com.example.ClassB methodName1|methodName2|methodName3`
Step 2
Verify the output to check the invocation counts and locations of classes/methods.

Alternative Approaches

Comparable commands in other tools

Alternative observability tools for the same job.

Trace Cmd / Display Recorded Trace Specific Cpu Linux sudo trace-cmd report --cpu <cpu_number> Trace Cmd / Start Tracing With Plugin Linux sudo trace-cmd start -p <function|function_graph|preemptirqsoff|irqsoff|preemptoff|wakeup|...> Trace Cmd / Stop Tracing Retain Buffers Linux sudo trace-cmd stop Trace Cmd / Record Trace With Plugin Linux sudo trace-cmd record -p <plugin> Trace Cmd / Clear Trace Buffers Linux sudo trace-cmd clear

Trace Multiple Classes Or Methods Invoke Chain

Expected runtime feedback

What each part is doing

Execution path

Stay inside the same tool family

Comparable commands in other tools