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New emulator upgrade mechanism introduced in R15 can only work if the
sasl version to upgrade from is 2.2 or later. I.e. if we are already
running at least R15.
This commit adds backwards compatiblity for upgrades from earlier
versions, meaning that the new code is loaded into the old emulator
and code_change is executed - then after all application code is
updated, the emulator is restarted with the new erts version.
Note that this might cause problems if the new code is compiled with
the new emulator and there have been updates to the beam format. If
this happens, the workaround is to compile the new code with the old
emulator.
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This is needed for sasl_SUITE:appup_test to work, therefore we do not
wait until release time.
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This is an attempt to correct a failing test case. It the test fails
on having restarted only once, we give it another try to see if the
second restart will happen.
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The appup files for kernel, stdlib and sasl did not contain any
UpFromVsn and DownToVsn. This means that it was not possible to create
a relup file with systool:make_relup if any of these applications had
changed.
This commit adds entries in the appup files for a maximum of two major
releases back - all with only one upgrade instruction:
restart_new_emulator. The point is to allow relups to be generated,
but ensure that no soft upgrade is done for these three applications -
i.e. they will always cause a restart of the emulator prior to all
other upgrade instructions from other applications.
Test cases (appup_test) are added to kernel_SUITE, stdlib_SUITE and
sasl_SUITE. These all check that expected versions are matched in the
appups, and illegal versions (older than two major releases, or in any
other way illegal) do not match. The test is written in a general way
where it is assumed that the version of these applications are stepped
according the the rule that major releases step the second number,
maintenance releases step the third number and patches step the fourth
number.
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Earlier, there was only one valid instruction to restart the emulator
in an appup/relup script, 'restart_new_emulator'. A new instuction,
'restart_emulator', is now added, and the meaning is as follows:
'restart_new_emulator' is mainly for the core applications (erts,
kernel, stdlib and sasl), and it indicates that there is new core
functionality in the release and the emulator needs to be restarted
before executing the upgrade scripts. If this instruction exists, a
temporary release will be created which consists of the new version
erts, kernel, stdlib and sasl, and the old versions of all other
applications. After restarting the emulator with this temporary
release, the rest of the upgrade instructions are executed, including
loading of new versions.
'restart_emulator' can be used by any application if a restart of the
emulator is needed after the upgrade instructions have been
executed. In this case, the emulator will be restarted with the new
release (i.e. not a tempoarary one) after all other upgrade
instructions for all applications have been excecuted.
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The sys.config file used for the temporary release in an erts upgrade
is now a hybrid where kernel, stdlib and sasl configuration is taken
from the new release, and other configuration is taken from the old
release. I.e. similar to how the temporary boot file is created.
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In order to avoid duplication of upgrade instructions in .appup files,
we now allow regular expressions to specify the UpFrom and DownTo
versions. To be considered a regular expression, the version
identifier must be specified as a binary, e.g.
<<"2\\.1\\.[0-9]+">> will match versions 2.1.x, where x is any number.
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If the version of erts differs between two releases, the release
handler automatically adds a 'restart_new_emulator' instruction to the
upgrade script (relup). Earlier, this instruction was always added at
the end of the upgrade script, causing the following sequence of
operations during an upgrade (a bit simplified):
1. suspend processes
2. load new code
3. execute code_change functions
4. resume processes
5. restart emulator with new erts version
Obviously, this caused the new code to be loaded into the old emulator
and this would fail if the beam format had been changed in the new
version of the emulator.
To overcome this problem, this commit changes the order of the
instructions, so for upgrade with changed erts version we now have:
1. restart emulator with new erts, kernel, stdlib and sasl versions,
but old versions of all other applications.
2. suspend processes
3. load new code
4. execute code_change functions
5. resume processes
This is implemented by creating a temporary release, including new
erts, kernel, stdlib and sasl from the new release and all other
applications from the old release. A new boot file for this temporary
release is created, which includes a new 'apply' instruction to run
release_handler:new_emulator_upgrade/2. Then the emulator is restarted
using this boot file - and release_handler:new_emulator_upgrade/2
executes the rest of the upgrade script.
For downgrade, the order will be as before:
1. suspend processes
2. execute code_change functions with 'down'-indication
3. load old code
4. resume processes
5. restart emulator with old erts version
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* anders/diameter/make/OTP-9638:
Dumb down release target to Solaris /usr/ucb/install
Dumb down opt/release targets to make 3.80
Minor tweaks and cleanup
Need absolute -pa for bootstrap build
Simpler release targets for src subdirectories
Use secondary expansion for src subdirectory rules
One makefile for src build instead of recursion
Remove app dependency on compiler to avoid forced recompilation
Move diameter_exprecs to compiler directory
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* anders/diameter/dictionaries/OTP-9641:
Add diameter_make as compilation interface
Update documentation
Don't require -i directory to exist
Allow @inherits to be set/cleared with diameterc
Allow @name/@prefix to be set with diameterc
Dependency fix
Move dictionaries into own directory and rename
Whitespace fixes
@result_code -> @define in dictionary files
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* hb/stdlib/fix_testsuites/OTP-9637:
Fix a few tests that used to fail on the HiPE platform
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* rc/epp-include-path-fix:
Make epp search directory of current file first when including another file
OTP-9645
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* hl/fix-ms_transform-scope-warn:
ms_transform: Fix incorrect `variable shadowed' warnings
OTP-9646
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* cf/simple_one_for_one_shutdown:
Explain how dynamic child processes are stopped
Stack errors when dynamic children are stopped
Explicitly kill dynamic children in supervisors
Conflicts:
lib/stdlib/doc/src/supervisor.xml
OTP-9647
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* cf/supervisor_shutdown_infinity:
Add a warning to docs about workers' shutdown strategy
Allow an infinite timeout to shutdown worker processes
OTP-9648
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* bjorn/unicode-noncharacters/OTP-9624:
Allow noncharacter code points in unicode encoding and decoding
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* bjorn/parallel-make/OTP-9451:
corba applications: Fix broken 'make clean'
ic documentation: Support parallel make
Revert "ic documentation: Support parallel make"
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Tweak some comments and variable names, move things around a bit
(default src target is now opt, not debug), only clean what's built,
use +warn_export_vars.
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* maint-r14:
Fix match bug
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Previously removed code erroneously reappeared in a merge to the master
branch (ec36499d7e329b4dc69a1a3be3422eac7907c260).
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* fm/enif_is_number:
Add NIF function enif_is_number
Conflicts:
erts/emulator/beam/erl_nif_api_funcs.h
OTP-9629
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* sverker/random-improved-algo:
Improve algorithm in module random.
Fix a bug in the implementation of the pseudo-random number generator
OTP-8713
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* pg/des-cfb-functions:
[crypto] Remove swedish characters from test code
[crypto] Add DES and Triple DES cipher feedback (CFB) mode functions
OTP-9640
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Otherwise include_lib will fail.
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The expected behaviour of a C-style preprocessor (such as Erlang's epp) is
to allow a header file to include another header file in the same directory
even though that directory is not explicitly in the include path, and even
if the actual include path might reference another directory containing a
file with the same name. For example, if src/foo.erl explicitly includes
"../include/foo.hrl", then foo.hrl should be able to include "bar.hrl" in
that same directory even though "../include" might not be in the search
path, and even if another file named bar.hrl could be found using the search
path it should not override the one in the same directory as foo.hrl.
In Erlang, the most common situation is that a user of an installed
application includes a main public header file using include_lib
("appname/include/foo.hrl") and that file includes a secondary header file
"bar.hrl". However, if it does this using include_lib, it causes a
bootstrapping problem - in the build environment for the application itself,
the application is not necessarily found by name. On the other hand, if
foo.hrl uses a plain include, then bar.hrl might be found when the
application is built (if explicit paths are set in the makefils) but not
later on when a user includes the main header file of the installed
application via include_lib.
By making -include always look in the directory of the current file before
it uses the search path, this problem is remedied, and include directives
behave in a more intuitive way.
This completes a partial fix in R11 that only worked for include_lib().
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Makes for a quieter rule with no recursion.
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Simpler, no duplication of similar makefiles and makes for
better dependencies. (Aka, recursive make considered harmful.)
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As a module-based alternative to the escript diameterc.
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This is to enable dictionaries compiled with --name/--prefix
to be inherited using --inherits.
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Has to follow the release_targets include for make not to
think that a misspelled dictionary is up to date just because
the exprecs dependency is.
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Generated files are unchanged but the separation will be
especially pleasant when more dictionary files are added
as examples. It is still only the rfc3588 and relay
dictionaries that are known to the diameter implementation.
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The section simply results in generated macros and has nothing
specifically to do with result codes. It's still not documented,
and neither are the macros generated from @enum, since the generated
names are typically so long as to be impractical/unreadable in source.
Better to use numeric values with a comment or define your own
shorter macros as the need arises.
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* anders/diameter/testsuites/OTP-9620:
Add failover suite
Use util to simplify connection establishment in suites
Move certificate generation into own testcase
Add beam target to makefile
Add util functions for managing connections
Use tcp/sctp port resolution from testsuites
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* anders/diameter/port_resolution/OTP-9623:
Register tcp listener before transport start return
Add port resolution interface to transport modules
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* hb/stdlib/dets_repair/OTP-9607:
Fix a bug in Dets concerning repair of almost full tables
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A Dets table with sufficiently large buckets could not always be repaired.
(Reported by Gordon Guthrie.)
The format of Dets files has been modified. When downgrading tables
created with the new system will be repaired. Otherwise the
modification should not be noticeable.
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