i(3erl)
NAME
i - Debugger/Interpreter Interface.
DESCRIPTION
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.
EXPORTS
im() -> pid()
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
Types:
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
Types:
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
Makes a printout of all interpreted modules. Modules are printed
together with the full path name of the corresponding source
code file.
ip() -> ok
Prints the current status of all interpreted processes.
ic() -> ok
Clears information about processes executing interpreted code by
removing all information about terminated processes.
iaa(Flags) -> true
iaa(Flags, Function) -> true
Types:
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
Types:
Flag = all | no_tail | false
Sets how to save call frames in the stack, see
int:stack_trace/1.
ia(Pid) -> ok | no_proc
Types:
Pid = pid()
Attaches to the debugged process Pid. An Attach Process window
is opened for the process.
ia(X,Y,Z) -> ok | no_proc
Types:
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
Types:
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
Types:
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}
Types:
Module = atom()
Line = int()
Creates a breakpoint at Line in Module.
ib(Module, Name, Arity) -> ok | {error, function_not_found}
Types:
Module = Name = atom()
Arity = int()
Creates breakpoints at the first line of every clause of
function Module:Name/Arity.
ir() -> ok
Deletes all breakpoints.
ir(Module) -> ok
Types:
Module = atom()
Deletes all breakpoints in Module.
ir(Module, Line) -> ok
Types:
Module = atom()
Line = int()
Deletes the breakpoint at Line in Module.
ir(Module, Name, Arity) -> ok | {error, function_not_found}
Types:
Module = Name = atom()
Arity = int()
Deletes the breakpoints at the first line of every clause of
function Module:Name/Arity.
ibd(Module, Line) -> ok
Types:
Module = atom()
Line = int()
Makes the breakpoint at Line in Module inactive.
ibe(Module, Line) -> ok
Types:
Module = atom()
Line = int()
Makes the breakpoint at Line in Module active.
iba(Module, Line, Action) -> ok
Types:
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
Types:
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
Prints all existing breakpoints.
ipb(Module) -> ok
Types:
Module = atom()
Prints all existing breakpoints in Module.
iv() -> atom()
Returns the current version number of the interpreter. Same as
the version number of the Debugger application.
help() -> ok
Prints help text.
SEE ALSO
int(3erl)
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