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Replace with io:format/2 or ct:pal/3.
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?config is ugly and not recommended. Use proplists:get_value/2
instead.
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* maint:
io_SUITE: Don't fail on fast computers with rough timers
Fix code_SUITE after test_server change
Set default value for crash_dump_dir
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test_server:start_node does no longer add the test_server path to the
new node, since the needed code is present in the default path. This
caused two test cases in code_SUITE to fail.
code_SUITE:mult_lib_roots: Expected the test_server path to be first
in the code path. This check is removed.
code_SUITE:bad_erl_libs: Started a node with "-env ERL_LIBS ",
i.e. not giving any value to the ERL_LIBS variable. This test
succeeded by accident, since the combination with arguments set by
test_server_node.erl and by slave.erl caused the node start to work,
and no further checks were present in the test. This part of the test
case is now removed.
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Add functions to 'code' to allow loading of multiple modules
at once.
code:atomic_load(Modules) will load all modules at once, or fail
having loaded none of them. Since we cannot guarantee the atomicity if
there are modules with -on_load functions, the list of modules must
not contain any modules with an -on_load function.
Also, to make it possible to put an application into an inactive state
for as short time as possible, also add code:prepare_loading/1 and
code:finish_loading/1. They are used like this:
{ok,Prepared} = code:prepare_loading(Modules)
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ok = code:finish_loading(Prepared)
code:ensure_modules_loaded/1 is useful as a pure optimization to
ensure that modules that will be needed soon have indeed been
loaded. It will not reload modules that have already been loaded and
it *will* accept modules that have an on_load function. Therefore, it
does not make sense to give any atomicity guarantees.
I did consider overloading the existing code:ensure_loaded/1
function, but rejected it because the return value is very
different. Having different forms of return values depending
on the types of arguments is confusing.
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The test_server application has previously been deprecated.
In OTP 19, we will move relevant parts of test_server into the
common_test application. Test suites that include test_server.hrl
must be updated to include ct.hrl instead. Test suites that include
test_server_line.hrl must removed that inclusion. Test suites that
call the test_server module directly will continue to work in OTP 19.
The test suites for Erlang/OTP are built and executed in exactly
the same way as previously.
Here are some more details.
The modules test_server*.erl and erl2html2.erl in lib/test_server/src
have been moved to common_test/src.
The test_server.hrl and test_server_line.hrl include files have
been deleted. The macros in test_server.hrl have been copied into
lib/common_test/include/ct.hrl.
The ts*.erl modules and their associated data files in
lib/test_server/src has been been moved to the new directory
lib/common_test/test_server. The ts* modules are no longer built
to lib/common_test/ebin. They will only built when 'make release_tests'
is executed.
The test suite for test_server has been moved to lib/common_test/test.
The rest of the files have been deleted.
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As a first step to removing the test_server application as
as its own separate application, change the inclusion of
test_server.hrl to an inclusion of ct.hrl and remove the
inclusion of test_server_line.hrl.
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* bjorn/kernel/clean-up-code_server:
code_server: Add specs for all exported functions
code_server: Add types to the state record
code_server: Don't export internal system_* functions
Simplify starting of code server
Remove first argument of code_server:call()
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* maint:
Update documentation for code-loading functions
code: Correct the types for error returns
Eliminate run-time system crash in code:load_abs/1
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The specifications for functions that load code in the 'code'
module (e.g. code:load_file/1) have some problems:
* The specs claim that the functions can return {error,on_load}, but
they never do. However, they can return {error,on_load_failure} if
the -on_load function in a module fails.
* The specs claim that the functions can return {error,native_code},
but they never do.
While we are it, also extend the on_load_errors/1 test case to test
that the load functions return {error,on_load_failure} when an
-on_load function fails.
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There is no reason to export system_continue/3 and system_terminate/4
from code_server. Servers that use proc_lib and 'sys' to handle system
message do need those functions exported, but code_server contains a
modified copy of the system message handling code from 'sys', and that
code only make local calls to system_continue/3 and
system_terminate/4.
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The run-time system would terminate if code:load_abs/1 was
called with a filename containing any non-latin1 characters.
The reason is that code_server would attempt to construct a
module name from the filename using list_to_atom/1 and that
atoms currently are limited to the latin1 character set.
But how should the error be reported?
I have decided to that the simplest and least confusing way
is to move the call to list_to_atom/1 to 'code' module and
let it crash the calling process. The resulting stack back
trace will make it clear what the reason for the crash was.
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Problem: erlang:purge_module/1 is not safe in the sense
that very bad things may happen if the code to be purged
is still referred to by live processes.
Introduce erts_internal:purge_module which is the same as the old
erlang:purge_module BIF (except it returns false if no such old module).
Implement erlang:purge_module in Erlang and let it invoke
erts_code_purger for safe purging where all clogging processes
first are killed.
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by moving code from code_server to erts_code_purger.
This is more or less a copy-paste from code_server.erl
to erts_code_purger.erl. All the inner mechanics of
code:purge/1 and code:soft_purge/1 are unchanged.
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In practice, it does not seem that code path cache can
improve performance. Looking for any file that is not found
will cause the cache to be rebuilt, which will negate any
gain of using the cache.
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* richcarl/warnings-by-default/OTP-12781:
stdlib: Use warning channel in test qlc_SUITE:otp_6964/1
stdlib: Fix testcase for qlc_SUITE
kernel: Fix code_SUITE with respect to new logger default
Map error logger warnings to warning messages by default
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Modules in the kernel, stdlib, and compiler applications are by
default "sticky", meaning that the code server will refuse to
re-load them.
The pre-loaded modules (those that are part of the run-time system
itself, such as 'erlang') are, however, not sticky. They used to be
sticky a long time ago when the pre-loaded modules were part of
the kernel application. Now they are part of the erts application.
Since re-loading a pre-loaded module can be catastrophic (especially
re-loading the 'erlang' module), the pre-loaded modules must be
sticky. Furthermore, it should not be allowed to unstick them.
The sticky_dir/1 test case in code_SUITE is never actually run and
is broken. Rewrite it.
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The following sequence will NOT leave the code path unchanged:
code:add_path("/some/app/"),
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code:del_path("/some/app/")
The reason is that code:add_path/1 will normalize the path name
(removing the trailing slash), while code:del_path/1 does not
normalize the path before searching for it in the code path.
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re needs unicode option
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When the code_server is about to purge a module it will now issue
asynchronous check_process_code requests to all processes at once
instead of one at a time. These check_process_code operation can
execute in parallel.
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* ks/hipe_bif-remove_refs_from/OTP-10851:
Fixed test to allow for lists:foreach/2 call
Change the return value of hipe_bifs:remove_refs_from/1
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code:is_module_native returned false for hipe compiled module if
the first function in the module was a BIF stub
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servers behaves
Rationale:
Some applications (like erlide) have code to be loaded dynamically on a
node. It may be slow to load everything upfront every time, so if the
node is in interactive mode, we would like to just append to the load
path. Currently, there is no direct way to detect if the node is running
in embedded mode or not so that we can do the right thing.
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code_SUITE:ext_mod_dep used code:which(kernel) to get the path to the
kernel ebin directory. This failed when kernel was cover compiled,
since code:which then returns 'cover_compiled'. Using code:lib_dir
instead solved the problem.
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Conflicts:
erts/preloaded/ebin/init.beam
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Workaround for crash in code_server.
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For now we only test beam as hipe doesn't pass the test
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OTP-10106
OTP-10107
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In "13.4 Running a function when a module is loaded" in the
Reference Manual, it is said that:
A process that calls any function in a module whose on_load
function has not yet returned will be suspended until the
on_load function has returned.
That did not work if the module was loaded using code:load_binary/3.
Instead, the callers would get an 'undef' exception.
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* dev:
Skip create_big_boot on platforms without crypto
Remove test_server path instead of cwd for clash test
Skip getaddr_v6 test if on the ipv4_only host
Use static port for old solaris versions
Extend time to wait for zone files to be loaded
Allow out of memory exception for max_port checks
Extend slave start timeout for windows tests
Double timeout to make sure debug builds pass
Use now instead of os:timestamp
Increase timeout in scheduler_suspend for slow platforms
Skip update_cpu_info if 'taskset' cannot be found
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This has to be done as many other applications depend
on that crypto is present.
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With the introduction of common_test as test framework
the working directory of the tests changed to be the
emulator_test directory. So we now have to remove the
../test_server directory instead. This change only affect
tests run with a emulator which has not been installed.
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* dev:
Fix a couple of minor bugs with hook priority
Update to reflect addition of CTH priority addition
Update CTH priority default to be 0
Update to reflect new cth callback api
Update the return from init/2 to be {ok, NewState} or {ok,NewState,Priority} instead of NewState.
Add priority functionality and tests for ct hooks
Update internal hooks state to use a record instead of tuples
Improve and correct types and specifications in Kernel and STDLIB
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Running Dialyzer on the test suites revealed a few type errors.
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This commit is a preparation for introducing location information
(filename/line number) in stacktraces in exceptions. Currently
a stack trace looks like:
[{Mod1,Function1,Arity1},
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{ModN,FunctionN,ArityN}]
Add a forth element to each tuple that can be used indication
the filename and line number of the source file:
[{Mod1,Function1,Arity1,Location1},
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{ModN,FunctionN,ArityN,LocationN}]
In this commit, the fourth element will just be an empty list,
and we will change all code that look at or manipulate stacktraces.
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