i

19982016 Ericsson AB. All Rights Reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. i

i Debugger/Interpreter Interface.

The i module provides short forms for some of the functions used by the graphical Debugger and some of the functions in module int, the Erlang interpreter.

This module also provides facilities for displaying status information about interpreted processes and break points.

It is possible to attach to interpreted processes by giving the corresponding process identity only. By default, an attachment window is displayed. Processes at other Erlang nodes can be attached manually or automatically.

By preference, these functions can be included in module shell_default. By default, they are included in that module.

im() -> pid() Start a graphical monitor.

Starts a new graphical monitor. This is the Monitor window, the main window of Debugger. All the Debugger and interpreter functionality is accessed from the Monitor window. This window displays the status of all processes that have been or are executing interpreted modules.

ii(AbsModules) -> ok ii(AbsModule) -> {module, Module} | error ini(AbsModules) -> ok ini(AbsModule) -> {module, Module} | error Interpret a module. AbsModules = [AbsModule] AbsModule = Module | File Module = atom() File = string()

Interprets the specified module(s). ii/1 interprets the module(s) only at the current node, see int:i/1. ini/1 interprets the module(s) at all known nodes, see int:ni/1.

iq(AbsModule) -> ok inq(AbsModule) -> ok Stop interpreting a module. AbsModule = Module | File Module = atom() File = string()

Stops interpreting the specified module. iq/1 stops interpreting the module only at the current node. inq/1 stops interpreting the module at all known nodes.

il() -> ok Make a printout of all interpreted modules

Makes a printout of all interpreted modules. Modules are printed together with the full path name of the corresponding source code file.

ip() -> ok Print the current status of all interpreted processes.

Prints the current status of all interpreted processes.

ic() -> ok Clear information about processes executing interpreted code.

Clears information about processes executing interpreted code by removing all information about terminated processes.

iaa(Flags) -> true iaa(Flags, Function) -> true Set when and how to attach to a process. Flags = [init | break | exit] Function = {Module,Name,Args} Module = Name = atom() Args = [term()]

Sets when and how to attach to a debugged process automatically, see int:auto_attach/2. Function defaults to the standard function used by Debugger.

ist(Flag) -> true Set how to save call frames. Flag = all | no_tail | false

Sets how to save call frames in the stack, see int:stack_trace/1.

ia(Pid) -> ok | no_proc Attache to a process. Pid = pid()

Attaches to the debugged process Pid. An Attach Process window is opened for the process.

ia(X,Y,Z) -> ok | no_proc Attache to a process. X = Y = Z = int()

Same as ia(Pid), where Pid is the result of calling the shell function pid(X,Y,Z).

ia(Pid, Function) -> ok | no_proc Attache to a process. Pid = pid() Function = {Module,Name} Module = Name = atom()

Attaches to the debugged process Pid. The interpreter calls spawn(Module, Name, [Pid]) (and ignores the result).

ia(X,Y,Z, Function) -> ok | no_proc Attache to a process. X = Y = Z = int() Function = {Module,Name} Module = Name = atom()

Same as ia(Pid, Function), where Pid is the result of calling the shell function pid(X,Y,Z). An attached process is expected to call the unofficial function int:attached(Pid) and to be able to handle messages from the interpreter. For an example, see dbg_wx_trace.erl.

ib(Module, Line) -> ok | {error, break_exists} Create a breakpoint. Module = atom() Line = int()

Creates a breakpoint at Line in Module.

ib(Module, Name, Arity) -> ok | {error, function_not_found} Create breakpoints in the specified function. Module = Name = atom() Arity = int()

Creates breakpoints at the first line of every clause of function Module:Name/Arity.

ir() -> ok Delete all breakpoints.

Deletes all breakpoints.

ir(Module) -> ok Delete all breakpoints in a module. Module = atom()

Deletes all breakpoints in Module.

ir(Module, Line) -> ok Delete a breakpoint. Module = atom() Line = int()

Deletes the breakpoint at Line in Module.

ir(Module, Name, Arity) -> ok | {error, function_not_found} Delete breakpoints from the specified function. Module = Name = atom() Arity = int()

Deletes the breakpoints at the first line of every clause of function Module:Name/Arity.

ibd(Module, Line) -> ok Make a breakpoint inactive. Module = atom() Line = int()

Makes the breakpoint at Line in Module inactive.

ibe(Module, Line) -> ok Make a breakpoint active. Module = atom() Line = int()

Makes the breakpoint at Line in Module active.

iba(Module, Line, Action) -> ok Set the trigger action of a breakpoint. Module = atom() Line = int() Action = enable | disable | delete

Sets the trigger action of the breakpoint at Line in Module to Action.

ibc(Module, Line, Function) -> ok Set the conditional test of a breakpoint. Module = atom() Line = int() Function = {Module,Name} Name = atom()

Sets the conditional test of the breakpoint at Line in Module to Function.

The conditional test is performed by calling Module:Name(Bindings), where Bindings is the current variable bindings. The function must return true (break) or false (do not break). To retrieve the value of a variable Var, use int:get_binding(Var, Bindings).

ipb() -> ok Print all existing breakpoints.

Prints all existing breakpoints.

ipb(Module) -> ok Print all existing breakpoints in a module. Module = atom()

Prints all existing breakpoints in Module.

iv() -> atom() Return the current version number of the interpreter.

Returns the current version number of the interpreter. Same as the version number of the Debugger application.

help() -> ok Print help text.

Prints help text.