Virtual Debug¶
This feature will be removed on 0.16.0
To use virtual debug, you need to trace your program with --vdb
using viztracer
vdb <your_json_report>
You can use the following commands in the interactive shell:
(They are very similar to pdb)
- s¶
single step to next function entry/exit
- sb¶
single step back to last function entry/exit
- n¶
go to next function entry/exit without entering other function
- nb¶
go to last function entry/exit without entering other function
- r¶
go forward and return to the caller function
- rb¶
go backward and return to the caller function
- t [<timestamp>]
if
<timestamp>
is not specified, display current timestamp, otherwise go to the time specified by<timestamp>
.<timestamp>
has the unit of us.
- tid [<tid>]
if
<tid>
is not specified, list the current thread ids in the current process, otherwise go to the thread at the current timestamp
- pid [<pid>]
if
<pid>
is not specified, list the current process ids, otherwise go to the first spawned thread in the specified process at the current timestamp
- w¶
list the call stack with
>
showing the current frame
- u¶
go up a level to inspect the outer frame
- d¶
go down a level to inspect the inner frame
- counter¶
print the counter recorded at the current timestamp
- object¶
print the objects recorded at the current timestamp
- a, arg, args
print the function args logged in VizTracer
- q, quit, exit
exit the program