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-rw-r--r--erts/doc/src/erlang.xml98
1 files changed, 69 insertions, 29 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index a42323b13d..7699f64c25 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -7539,7 +7539,39 @@ ok
</func>
<func>
- <name name="system_flag" arity="2" clause_i="14" since=""/>
+ <name name="system_flag" arity="2" clause_i="14" since="OTP 21.3"/>
+ <fsummary>Set system logger process.</fsummary>
+ <desc>
+ <p>Sets the process that will receive the logging
+ messages generated by ERTS. If set to <c>undefined</c>,
+ all logging messages generated by ERTS will be dropped.
+ The messages will be in the format:</p>
+ <code>
+{log,Level,Format,ArgList,Metadata} where
+
+Level = atom(),
+Format = string(),
+ArgList = list(term()),
+Metadata = #{ pid => pid(),
+ group_leader => pid(),
+ time := logger:timestamp(),
+ error_logger := #{ emulator := true, tag := atom() }
+ </code>
+ <p>If the <c>system_logger</c> process dies,
+ this flag will be reset to <c>logger</c>.</p>
+ <p>The default is the process named <c>logger</c>.</p>
+ <p>Returns the old value of the flag.</p>
+ <note><p>This function is designed to be used by the
+ KERNEL <seealso marker="kernel:logger"><c>logger</c></seealso>.
+ Be careful if you change it to something else as
+ log messages may be lost. If you want to intercept
+ emulator log messages, do it by adding a specialized handler
+ to the KERNEL logger.</p></note>
+ </desc>
+ </func>
+
+ <func>
+ <name name="system_flag" arity="2" clause_i="15" since=""/>
<fsummary>Set system flag trace_control_word.</fsummary>
<desc>
<p>Sets the value of the node trace control word to
@@ -7553,7 +7585,7 @@ ok
</func>
<func>
- <name name="system_flag" arity="2" clause_i="15"
+ <name name="system_flag" arity="2" clause_i="16"
anchor="system_flag_time_offset" since="?"/>
<fsummary>Finalize the time offset.</fsummary>
<desc>
@@ -7703,8 +7735,9 @@ ok
<seealso marker="#system_info_nif_version"><c>nif_version</c></seealso>,
<seealso marker="#system_info_otp_release"><c>otp_release</c></seealso>,
<seealso marker="#system_info_port_parallelism"><c>port_parallelism</c></seealso>,
- <seealso marker="#system_info_system_version"><c>system_version</c></seealso>,
<seealso marker="#system_info_system_architecture"><c>system_architecture</c></seealso>,
+ <seealso marker="#system_info_system_logger"><c>system_logger</c></seealso>,
+ <seealso marker="#system_info_system_version"><c>system_version</c></seealso>,
<seealso marker="#system_info_trace_control_word"><c>trace_control_word</c></seealso>,
<seealso marker="#system_info_version"><c>version</c></seealso>,
<seealso marker="#system_info_wordsize"><c>wordsize</c></seealso>
@@ -7876,7 +7909,7 @@ ok
anchor="system_info_cpu_topology" since=""/> <!-- cpu_topology -->
<name name="system_info" arity="1" clause_i="13" since=""/> <!-- {cpu_topology, _} -->
<name name="system_info" arity="1" clause_i="38" since=""/> <!-- logical_processors -->
- <name name="system_info" arity="1" clause_i="73" since="?"/> <!-- update_cpu_info -->
+ <name name="system_info" arity="1" clause_i="74" since="?"/> <!-- update_cpu_info -->
<fsummary>Information about the CPU topology of the system.</fsummary>
<type name="cpu_topology"/>
<type name="level_entry"/>
@@ -8231,10 +8264,10 @@ ok
<name name="system_info" arity="1" clause_i="50" since="OTP 18.0"/> <!-- os_monotonic_time_source -->
<name name="system_info" arity="1" clause_i="51" since="OTP 18.0"/> <!-- os_system_time_source -->
<name name="system_info" arity="1" clause_i="63" since="OTP 18.0"/> <!-- start_time -->
- <name name="system_info" arity="1" clause_i="68" since="OTP 18.0"/> <!-- time_correction -->
- <name name="system_info" arity="1" clause_i="69" since="OTP 18.0"/> <!-- time_offset -->
- <name name="system_info" arity="1" clause_i="70" since="OTP 18.0"/> <!-- time_warp_mode -->
- <name name="system_info" arity="1" clause_i="71" since="?"/> <!-- tolerant_timeofday -->
+ <name name="system_info" arity="1" clause_i="69" since="OTP 18.0"/> <!-- time_correction -->
+ <name name="system_info" arity="1" clause_i="70" since="OTP 18.0"/> <!-- time_offset -->
+ <name name="system_info" arity="1" clause_i="71" since="OTP 18.0"/> <!-- time_warp_mode -->
+ <name name="system_info" arity="1" clause_i="72" since="?"/> <!-- tolerant_timeofday -->
<fsummary>Information about system time.</fsummary>
<desc>
<marker id="system_info_time_tags"/>
@@ -8466,8 +8499,8 @@ ok
<name name="system_info" arity="1" clause_i="60" since=""/> <!-- scheduler_id -->
<name name="system_info" arity="1" clause_i="61" since=""/> <!-- schedulers -->
<name name="system_info" arity="1" clause_i="62" since=""/> <!-- smp_support -->
- <name name="system_info" arity="1" clause_i="66" since=""/> <!-- threads -->
- <name name="system_info" arity="1" clause_i="67" since=""/> <!-- thread_pool_size -->
+ <name name="system_info" arity="1" clause_i="67" since=""/> <!-- threads -->
+ <name name="system_info" arity="1" clause_i="68" since=""/> <!-- thread_pool_size -->
<fsummary>Information about system schedulers.</fsummary>
<desc>
<marker id="system_info_scheduler_tags"/>
@@ -8889,19 +8922,20 @@ ok
<!-- <name name="system_info" arity="1" clause_i="61"/> schedulers -->
<!-- <name name="system_info" arity="1" clause_i="62"/> smp_support -->
<!-- <name name="system_info" arity="1" clause_i="63"/> start_time -->
- <name name="system_info" arity="1" clause_i="64" since=""/> <!-- system_version -->
- <name name="system_info" arity="1" clause_i="65" since=""/> <!-- system_architecture -->
- <!-- <name name="system_info" arity="1" clause_i="66"/> threads -->
- <!-- <name name="system_info" arity="1" clause_i="67"/> thread_pool_size -->
- <!-- <name name="system_info" arity="1" clause_i="68"/> time_correction -->
- <!-- <name name="system_info" arity="1" clause_i="69"/> time_offset -->
- <!-- <name name="system_info" arity="1" clause_i="70"/> time_warp_mode -->
- <!-- <name name="system_info" arity="1" clause_i="71"/> tolerant_timeofday -->
- <name name="system_info" arity="1" clause_i="72" since=""/> <!-- trace_control_word -->
- <!-- <name name="system_info" arity="1" clause_i="73"/> update_cpu_info -->
- <name name="system_info" arity="1" clause_i="74" since=""/> <!-- version -->
- <name name="system_info" arity="1" clause_i="75" since=""/> <!-- wordsize -->
- <!-- <name name="system_info" arity="1" clause_i="76"/> overview -->
+ <name name="system_info" arity="1" clause_i="64" since=""/> <!-- system_architecture -->
+ <name name="system_info" arity="1" clause_i="65" since="OTP 21.3"/> <!-- system_logger -->
+ <name name="system_info" arity="1" clause_i="66" since=""/> <!-- system_version -->
+ <!-- <name name="system_info" arity="1" clause_i="67"/> threads -->
+ <!-- <name name="system_info" arity="1" clause_i="68"/> thread_pool_size -->
+ <!-- <name name="system_info" arity="1" clause_i="69"/> time_correction -->
+ <!-- <name name="system_info" arity="1" clause_i="70"/> time_offset -->
+ <!-- <name name="system_info" arity="1" clause_i="71"/> time_warp_mode -->
+ <!-- <name name="system_info" arity="1" clause_i="72"/> tolerant_timeofday -->
+ <name name="system_info" arity="1" clause_i="73" since=""/> <!-- trace_control_word -->
+ <!-- <name name="system_info" arity="1" clause_i="74"/> update_cpu_info -->
+ <name name="system_info" arity="1" clause_i="75" since=""/> <!-- version -->
+ <name name="system_info" arity="1" clause_i="76" since=""/> <!-- wordsize -->
+ <!-- <name name="system_info" arity="1" clause_i="77"/> overview -->
<fsummary>Information about the system.</fsummary>
<desc>
<marker id="system_info_misc_tags"/>
@@ -9057,18 +9091,24 @@ ok
<seealso marker="erl#+spp"><c>+spp</c></seealso>
in <c>erl(1)</c>.</p>
</item>
- <tag><marker id="system_info_system_version"/>
- <c>system_version</c></tag>
- <item>
- <p>Returns a string containing version number and
- some important properties, such as the number of schedulers.</p>
- </item>
<tag><marker id="system_info_system_architecture"/>
<c>system_architecture</c></tag>
<item>
<p>Returns a string containing the processor and OS
architecture the emulator is built for.</p>
</item>
+ <tag><marker id="system_info_system_logger"/>
+ <c>system_logger</c></tag>
+ <item>
+ <p>Returns the current <c>system_logger</c> as set by
+ <seealso marker="#system_flag/2"><c>erlang:system_flag(system_logger, _)</c></seealso>.</p>
+ </item>
+ <tag><marker id="system_info_system_version"/>
+ <c>system_version</c></tag>
+ <item>
+ <p>Returns a string containing version number and
+ some important properties, such as the number of schedulers.</p>
+ </item>
<tag><marker id="system_info_trace_control_word"/>
<c>trace_control_word</c></tag>
<item>
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 10:38:59 +0000