diff options
Diffstat (limited to 'lib/kernel/src/logger_h_common.hrl')
-rw-r--r-- | lib/kernel/src/logger_h_common.hrl | 57 |
1 files changed, 29 insertions, 28 deletions
diff --git a/lib/kernel/src/logger_h_common.hrl b/lib/kernel/src/logger_h_common.hrl index ed365ce6eb..e0a7b6e3ca 100644 --- a/lib/kernel/src/logger_h_common.hrl +++ b/lib/kernel/src/logger_h_common.hrl @@ -4,47 +4,47 @@ %%! *** NOTE *** %%! It's important that: -%%! TOGGLE_SYNC_QLEN < DROP_NEW_REQS_QLEN < FLUSH_REQS_QLEN -%%! and that DROP_NEW_REQS_QLEN >= 2. +%%! SYNC_MODE_QLEN =< DROP_MODE_QLEN =< FLUSH_QLEN +%%! and that DROP_MODE_QLEN >= 2. %%! Otherwise the handler could end up in drop mode with no new %%! log requests to process. This would cause all future requests %%! to be dropped (no switch to async mode would ever take place). %% This specifies the message_queue_len value where the log %% requests switch from asynchronous casts to synchronous calls. --define(TOGGLE_SYNC_QLEN, 10). +-define(SYNC_MODE_QLEN, 10). %% Above this message_queue_len, log requests will be dropped, %% i.e. no log requests get sent to the handler process. --define(DROP_NEW_REQS_QLEN, 200). +-define(DROP_MODE_QLEN, 200). %% Above this message_queue_len, the handler process will flush %% its mailbox and only leave this number of messages in it. --define(FLUSH_REQS_QLEN, 1000). +-define(FLUSH_QLEN, 1000). %% Never flush more than this number of messages in one go, %% or the handler will be unresponsive for seconds (keep this %% number as large as possible or the mailbox could grow large). -define(FLUSH_MAX_N, 5000). -%% BURST_LIMIT is the max number of log requests allowed to be -%% written within a BURST_WINDOW_TIME time frame. --define(ENABLE_BURST_LIMIT, true). --define(BURST_LIMIT_SIZE, 500). --define(BURST_WINDOW_TIME, 1000). +%% BURST_LIMIT_MAX_COUNT is the max number of log requests allowed +%% to be written within a BURST_LIMIT_WINDOW_TIME time frame. +-define(BURST_LIMIT_ENABLE, true). +-define(BURST_LIMIT_MAX_COUNT, 500). +-define(BURST_LIMIT_WINDOW_TIME, 1000). %% This enables/disables the feature to automatically get the %% handler terminated if it gets too loaded (and can't keep up). --define(ENABLE_KILL_OVERLOADED, false). +-define(OVERLOAD_KILL_ENABLE, false). %% If the message_queue_len goes above this size even after %% flushing has been performed, the handler is terminated. --define(HANDLER_OVERLOADED_QLEN, 20000). +-define(OVERLOAD_KILL_QLEN, 20000). %% If the memory usage exceeds this level --define(HANDLER_OVERLOADED_MEM, 3000000). +-define(OVERLOAD_KILL_MEM_SIZE, 3000000). %% This is the default time that the handler will wait before -%% restarting and accepting new requests. The value 'never' +%% restarting and accepting new requests. The value 'infinity' %% disables restarts. --define(HANDLER_RESTART_AFTER, 5000). -%%-define(HANDLER_RESTART_AFTER, never). +-define(OVERLOAD_KILL_RESTART_AFTER, 5000). +%%-define(OVERLOAD_KILL_RESTART_AFTER, infinity). %% The handler sends asynchronous write requests to the process %% controlling the i/o device, but every once in this interval @@ -77,29 +77,30 @@ -define(DISK_LOG_MAX_NO_BYTES, 1048576). %%%----------------------------------------------------------------- +%%% Utility macros + +-define(name_to_reg_name(MODULE,Name), + list_to_atom(lists:concat([MODULE,"_",Name]))). + +%%%----------------------------------------------------------------- %%% Overload protection macros -define(timestamp(), erlang:monotonic_time(microsecond)). --define(get_mode(HandlerName), - case ets:lookup(HandlerName, mode) of - [{mode,sync}] -> - case whereis(HandlerName)==self() of - true -> async; - _ -> sync - end; +-define(get_mode(Tid), + case ets:lookup(Tid, mode) of [{mode,M}] -> M; _ -> async end). --define(set_mode(HandlerName, M), - begin ets:insert(HandlerName, {mode,M}), M end). +-define(set_mode(Tid, M), + begin ets:insert(Tid, {mode,M}), M end). --define(change_mode(HandlerName, M0, M1), +-define(change_mode(Tid, M0, M1), if M0 == M1 -> M0; true -> - ets:insert(HandlerName, {mode,M1}), + ets:insert(Tid, {mode,M1}), M1 end). @@ -124,7 +125,7 @@ %%% slow down execution and therefore should not be include in code %%% to be officially released. --define(TEST_HOOKS, true). +%%-define(TEST_HOOKS, true). -ifdef(TEST_HOOKS). -define(TEST_HOOKS_TAB, logger_h_test_hooks). |