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authorBjörn-Egil Dahlberg <[email protected]>2012-10-24 14:20:26 +0200
committerBjörn-Egil Dahlberg <[email protected]>2012-10-24 14:20:26 +0200
commitd5733bc3e34449affde2594d85b905c8ab440d42 (patch)
tree4744a65c8d163ef261f56d70ff7b4bf975a2aa28 /erts/doc/src/erl.xml
parente85c4dda93e416e8e97c0dcfadc5eeaf5bd8b4e1 (diff)
parent6f0a76a0f78f3483b561b5e59260e8ca968b052c (diff)
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Merge branch 'egil/ensure-erl_crash.dump/OTP-10422' into maint
* egil/ensure-erl_crash.dump/OTP-10422: test: Relax timeouts for heart_SUITE erts: Fix crash dump write to port hack erts: Fix lock check assertion doc: Document ERL_CRASH_DUMP_SECONDS behaviour test: Add test for heart restart on crash test: Add test for heart restart on crash erts: Change ERL_CRASH_DUMP_SECONDS behaviour test: Refactor away ?line macros in heart_SUITE erts: Search for heart in ports that are alive heart: Refactor heart debugging erts, heart: Ensure erl_crash.dump is written
Diffstat (limited to 'erts/doc/src/erl.xml')
-rw-r--r--erts/doc/src/erl.xml31
1 files changed, 31 insertions, 0 deletions
diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index 2dea477d99..f931445a3e 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -1040,6 +1040,37 @@
the emulator will be allowed to spend writing a crash dump. When
the given number of seconds have elapsed, the emulator will be
terminated by a SIGALRM signal.</p>
+
+ <p> If the environment variable is <em>not</em> set or it is set to zero seconds, <c><![CDATA[ERL_CRASH_DUMP_SECONDS=0]]></c>,
+ the runtime system will not even attempt to write the crash dump file. It will just terminate.
+ </p>
+ <p> If the environment variable is set to negative valie, e.g. <c><![CDATA[ERL_CRASH_DUMP_SECONDS=-1]]></c>,
+ the runtime system will wait indefinitely for the crash dump file to be written.
+ </p>
+ <p> This environment variable is used in conjuction with
+ <seealso marker="kernel:heart"><c>heart</c></seealso> if <c>heart</c> is running:
+ </p>
+ <taglist>
+ <tag><c><![CDATA[ERL_CRASH_DUMP_SECONDS=0]]></c></tag>
+ <item><p>
+ Suppresses the writing a crash dump file entirely,
+ thus rebooting the runtime system immediately.
+ This is the same as not setting the environment variable.
+ </p>
+ </item>
+ <tag><c><![CDATA[ERL_CRASH_DUMP_SECONDS=-1]]></c></tag>
+ <item><p>Setting the environment variable to a negative value will cause the
+ termination of the runtime system to wait until the crash dump file
+ has been completly written.
+ </p>
+ </item>
+ <tag><c><![CDATA[ERL_CRASH_DUMP_SECONDS=S]]></c></tag>
+ <item><p>
+ Will wait for <c>S</c> seconds to complete the crash dump file and
+ then terminate the runtime system.
+ </p>
+ </item>
+ </taglist>
</item>
<tag><c><![CDATA[ERL_AFLAGS]]></c></tag>
<item>