From: Siraaj Khandkar <siraaj@khandkar.net>
Date: Wed, 16 Sep 2015 22:00:53 +0000 (-0400)
Subject: Implement printing process stats.
X-Git-Tag: 0.7.0^2~4
X-Git-Url: https://git.xandkar.net/?p=beam_stats.git;a=commitdiff_plain;h=fa175c943c5d08ca2fdf2156abc3023ccf8b9baa

Implement printing process stats.
---

diff --git a/src/beam_stats_process.erl b/src/beam_stats_process.erl
index a06c48e..412b4f8 100644
--- a/src/beam_stats_process.erl
+++ b/src/beam_stats_process.erl
@@ -9,6 +9,7 @@
 
 -export(
     [ of_pid/1
+    , print/1
     ]).
 
 -type status() ::
@@ -25,6 +26,10 @@
 -type t() ::
     ?T{}.
 
+%% ============================================================================
+%% Public API
+%% ============================================================================
+
 -spec of_pid(pid()) ->
     t().
 of_pid(Pid) ->
@@ -42,6 +47,52 @@ of_pid(Pid) ->
     , message_queue_len = pid_info_exn(Pid, message_queue_len)
     }.
 
+-spec print(t()) ->
+    ok.
+print(
+    ?T
+    { pid               = Pid
+    , registered_name   = RegisteredNameOpt
+    , raw_initial_call  = InitialCallRaw
+    , otp_initial_call  = InitialCallOTPOpt
+    , otp_ancestors     = AncestorsOpt
+    , status            = Status
+    , memory            = Memory
+    , total_heap_size   = TotalHeapSize
+    , stack_size        = StackSize
+    , message_queue_len = MsgQueueLen
+    }
+) ->
+    io:format("--------------------------------------------------~n"),
+    io:format(
+        "Pid               : ~p~n"
+        "RegisteredNameOpt : ~p~n"
+        "InitialCallRaw    : ~p~n"
+        "InitialCallOTPOpt : ~p~n"
+        "AncestorsOpt      : ~p~n"
+        "Status            : ~p~n"
+        "Memory            : ~p~n"
+        "TotalHeapSize     : ~p~n"
+        "StackSize         : ~p~n"
+        "MsgQueueLen       : ~p~n"
+        "~n",
+        [ Pid
+        , RegisteredNameOpt
+        , InitialCallRaw
+        , InitialCallOTPOpt
+        , AncestorsOpt
+        , Status
+        , Memory
+        , TotalHeapSize
+        , StackSize
+        , MsgQueueLen
+        ]
+    ).
+
+%% ============================================================================
+%% Private helpers
+%% ============================================================================
+
 pid_info_exn(Pid, Key) ->
     {some, Value} = pid_info_opt(Pid, Key),
     Value.
diff --git a/src/beam_stats_processes.erl b/src/beam_stats_processes.erl
index 707a534..2505178 100644
--- a/src/beam_stats_processes.erl
+++ b/src/beam_stats_processes.erl
@@ -9,6 +9,8 @@
 
 -export(
     [ collect/0
+    , collect_and_print/0
+    , print/1
     ]).
 
 -define(T, #?MODULE).
@@ -40,3 +42,51 @@ collect() ->
     , count_waiting
         = length([P || P <- Ps, P#beam_stats_process.status =:= waiting])
     }.
+
+collect_and_print() ->
+    print(collect()).
+
+-spec print(t()) ->
+    ok.
+print(
+    ?T
+    { individual_stats         = PerProcessStats
+    , count_all                = CountAll
+    , count_exiting            = CountExiting
+    , count_garbage_collecting = CountGarbageCollecting
+    , count_registered         = CountRegistered
+    , count_runnable           = CountRunnable
+    , count_running            = CountRunning
+    , count_suspended          = CountSuspended
+    , count_waiting            = CountWaiting
+    }
+) ->
+    PerProcessStatsSorted = lists:sort(
+        fun (#beam_stats_process{memory=A}, #beam_stats_process{memory=B}) ->
+            % From lowest to highest:
+            A < B
+        end,
+        PerProcessStats
+    ),
+    lists:foreach(fun beam_stats_process:print/1, PerProcessStatsSorted),
+    io:format("==================================================~n"),
+    io:format(
+        "CountAll               : ~b~n"
+        "CountExiting           : ~b~n"
+        "CountGarbageCollecting : ~b~n"
+        "CountRegistered        : ~b~n"
+        "CountRunnable          : ~b~n"
+        "CountRunning           : ~b~n"
+        "CountSuspended         : ~b~n"
+        "CountWaiting           : ~b~n"
+        "~n",
+        [ CountAll
+        , CountExiting
+        , CountGarbageCollecting
+        , CountRegistered
+        , CountRunnable
+        , CountRunning
+        , CountSuspended
+        , CountWaiting
+        ]
+    ).