diff options
| -rw-r--r-- | lib/debugger/doc/src/debugger_chapter.xml | 18 | ||||
| -rw-r--r-- | lib/debugger/doc/src/int.xml | 4 | ||||
| -rw-r--r-- | lib/debugger/src/dbg_iserver.erl | 2 |
3 files changed, 11 insertions, 13 deletions
diff --git a/lib/debugger/doc/src/debugger_chapter.xml b/lib/debugger/doc/src/debugger_chapter.xml index 67e95cd083..2d812b0236 100644 --- a/lib/debugger/doc/src/debugger_chapter.xml +++ b/lib/debugger/doc/src/debugger_chapter.xml @@ -274,17 +274,15 @@ c_break(Bindings) -> <seealso marker="#attach">the Attach Process window</seealso>. </p> - <p>By default, the Debugger saves information about all current + <p>By default, the Debugger only saves information about recursive function calls, that is, function calls that have not yet returned - a value (option 'Stack On, Tail').</p> - - <p>This means, however, that information is saved also for tail - recursive calls. For example, repeated calls to the <c>loop</c> - function of an Erlang process. This may consume unnecessary - amounts of memory for debugged processes with long lifetimes and - many tail recursive calls. It is therefore possible to set - the option 'Stack On, no tail', in which case information about - previous calls are discarded when a tail recursive call is made. + a value (option 'Stack On, No Tail').</p> + + <p>Sometimes, however, it can be useful to save all calls, even + tail-recursive calls. That can be done with the 'Stack On, Tail' + option. Note that this option will consume more memory and slow + down execution of interpreted functions when there are many + tail-recursive calls. </p> <p>It is also possible to turn off the Debugger stack trace diff --git a/lib/debugger/doc/src/int.xml b/lib/debugger/doc/src/int.xml index 8b55461a44..c9d815755d 100644 --- a/lib/debugger/doc/src/int.xml +++ b/lib/debugger/doc/src/int.xml @@ -284,12 +284,12 @@ spawn(Module, Name, [Pid | Args]) <list> <item><c>all</c> - save information about all current calls, that is, function calls that have not yet returned a value. - This is the default.</item> + </item> <item><c>no_tail</c> - save information about current calls, but discard previous information when a tail recursive call is made. This option consumes less memory and may be necessary to use for processes with long lifetimes and many - tail recursive calls.</item> + tail recursive calls. This is the default.</item> <item><c>false</c> - do not save any information about current calls.</item> </list> diff --git a/lib/debugger/src/dbg_iserver.erl b/lib/debugger/src/dbg_iserver.erl index 55ac1cef94..1bb73a43b9 100644 --- a/lib/debugger/src/dbg_iserver.erl +++ b/lib/debugger/src/dbg_iserver.erl @@ -114,7 +114,7 @@ init([]) -> process_flag(trap_exit, true), global:register_name(?MODULE, self()), Db = ets:new(?MODULE, [ordered_set, protected]), - {ok, #state{db=Db, auto=false, stack=all}}. + {ok, #state{db=Db, auto=false, stack=no_tail}}. %% Attaching to a process handle_call({attached, AttPid, Pid}, _From, State) -> |