delve/Documentation/usage/dlv_log.md
Alessandro Arzilli d963eb1057
proc: read context from sigtrampgo, fixes TestCgoStacktrace2 on 1.21 (#3401)
* logflags,proc: flag to log stacktrace execution

Add a log flag to write logs about what the stacktracer does.

* proc: read context from sigtrampgo, fixes TestCgoStacktrace2 on 1.21

Changes stacktrace code to read the signal context from the arguments
of sigtrampgo.
Also changes the automatic fatalthrow breakpoint for go 1.21.
In combination these two changes fix TestCgoStacktrace2 on Go 1.21 on
various platforms.
2023-06-27 09:33:07 -07:00

3.0 KiB

dlv log

Help about logging flags.

Synopsis

Logging can be enabled by specifying the --log flag and using the --log-output flag to select which components should produce logs.

The argument of --log-output must be a comma separated list of component names selected from this list:

debugger	Log debugger commands
gdbwire		Log connection to gdbserial backend
lldbout		Copy output from debugserver/lldb to standard output
debuglineerr	Log recoverable errors reading .debug_line
rpc		Log all RPC messages
dap		Log all DAP messages
fncall		Log function call protocol
minidump	Log minidump loading
stack           Log stacktracer

Additionally --log-dest can be used to specify where the logs should be written. If the argument is a number it will be interpreted as a file descriptor, otherwise as a file path. This option will also redirect the "server listening at" message in headless and dap modes.

Options

  -h, --help   help for log

Options inherited from parent commands

      --accept-multiclient               Allows a headless server to accept multiple client connections via JSON-RPC or DAP.
      --allow-non-terminal-interactive   Allows interactive sessions of Delve that don't have a terminal as stdin, stdout and stderr
      --api-version int                  Selects JSON-RPC API version when headless. New clients should use v2. Can be reset via RPCServer.SetApiVersion. See Documentation/api/json-rpc/README.md. (default 1)
      --backend string                   Backend selection (see 'dlv help backend'). (default "default")
      --build-flags string               Build flags, to be passed to the compiler. For example: --build-flags="-tags=integration -mod=vendor -cover -v"
      --check-go-version                 Exits if the version of Go in use is not compatible (too old or too new) with the version of Delve. (default true)
      --disable-aslr                     Disables address space randomization
      --headless                         Run debug server only, in headless mode. Server will accept both JSON-RPC or DAP client connections.
      --init string                      Init file, executed by the terminal client.
  -l, --listen string                    Debugging server listen address. (default "127.0.0.1:0")
      --log                              Enable debugging server logging.
      --log-dest string                  Writes logs to the specified file or file descriptor (see 'dlv help log').
      --log-output string                Comma separated list of components that should produce debug output (see 'dlv help log')
      --only-same-user                   Only connections from the same user that started this instance of Delve are allowed to connect. (default true)
  -r, --redirect stringArray             Specifies redirect rules for target process (see 'dlv help redirect')
      --wd string                        Working directory for running the program.

SEE ALSO

  • dlv - Delve is a debugger for the Go programming language.