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File 0158-erts-Clarify-ERL_CRASH_DUMP_SECONDS-docs.patch of Package erlang (Revision 9be24adab77ea185ad105591993319cb)

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From f8dadb1c97e952e79e4df558c76f99664757441c Mon Sep 17 00:00:00 2001
From: Sverker Eriksson <sverker@erlang.org>
Date: Wed, 24 May 2017 15:30:42 +0200
Subject: [PATCH] erts: Clarify ERL_CRASH_DUMP_SECONDS docs

especially default behavior without -heart,
which is wait indefinitely for crash dump.
---
 erts/doc/src/erl.xml | 35 +++++++++++++++--------------------
 1 file changed, 15 insertions(+), 20 deletions(-)

diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index 8b152b83f..638e88ca3 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -1553,32 +1553,27 @@
 <item>
 Unix systems: This variable gives the number of seconds
 that the emulator is allowed to spend writing a crash dump. When the
- given number of seconds have elapsed, the emulator is terminated by a
- <c>SIGALRM</c> signal.
- If the variable is not set or set to <c>0</c> seconds
- (<c><![CDATA[ERL_CRASH_DUMP_SECONDS=0]]></c>), the runtime system does
- not even attempt to write the crash dump file. It only terminates.
- If the variable is set to negative value, such as
- <c><![CDATA[ERL_CRASH_DUMP_SECONDS=-1]]></c>, the runtime system
- waits indefinitely for the crash dump file to be written.
- This variable is used with <seealso marker="kernel:heart">
- <c>heart(3)</c></seealso> if <c>heart</c> is running:
+ given number of seconds have elapsed, the emulator is terminated.
 <taglist>
 <tag><c><![CDATA[ERL_CRASH_DUMP_SECONDS=0]]></c></tag>
- <item>Suppresses the writing a crash dump file entirely, thus
- rebooting the runtime system immediately. This is the same as not
- setting the environment variable.
+	 <item>If the variable is set to <c>0</c> seconds, the runtime system does
+ not even attempt to write the crash dump file. It only terminates.
+	 This is the default if option <c>-heart</c> is passed to <c>erl</c>
+	 and <c>ERL_CRASH_DUMP_SECONDS</c> is not set.
+	 </item>
+ <tag><c><![CDATA[ERL_CRASH_DUMP_SECONDS=S]]></c></tag>
+ <item>If the variable is set to a positive value <c>S</c>,
+	 wait for <c>S</c> seconds to complete the crash dump file and
+ then terminates the runtime system with a <c>SIGALRM</c> signal.
 </item>
 <tag><c><![CDATA[ERL_CRASH_DUMP_SECONDS=-1]]></c></tag>
- <item>Setting the environment variable to a negative value causes the
- termination of the runtime system to wait until the crash dump file
- has been completly written.
- </item>
- <tag><c><![CDATA[ERL_CRASH_DUMP_SECONDS=S]]></c></tag>
- <item>Waits for <c>S</c> seconds to complete the crash dump file and
- then terminates the runtime system.
+ <item>A negative value causes the termination of the runtime system
+	 to wait indefinitely until the crash dump file has been completly
+	 written. This is the default if option <c>-heart</c> is not
+	 passed to <c>erl</c> and <c>ERL_CRASH_DUMP_SECONDS</c> is not set.
 </item>
 </taglist>
+ See also <seealso marker="kernel:heart"><c>heart(3)</c></seealso>.
 </item>
 <tag><c><![CDATA[ERL_CRASH_DUMP_BYTES]]></c></tag>
 <item>
-- 
2.13.0

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