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Commit ed06dd12ea74018b902a2c4c7924313d23cedb75 made pre-loaded
modules (such as erlang) sticky, and also made it impossible to
unstick them to prevent them from ever be reloaded.
It turns out that there are tools that may want to instrument
the erlang module (such as concuerror), so making it
impossible to unstick modules is harsh. Therefore, revert the
part of the commit that prevented unsticking the pre-loaded
modules.
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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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* dz/inet_getstat_doc_typo_fix:
inet: fix typo in inet:getstat/2 doc
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* egil/fix-erts_debug-size/OTP-11923:
erts: Update preloaded erts_internal.beam
erts: Add spec for erts_internal:map_to_tuple_keys/1
erts: Add testcase for erts_debug:size/1 Map terms
kernel: Fix erts_debug:size/1 to handle Map sizes
erts: Add erts_internal:map_to_tuple_keys/1
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The word 'received' in 'send_dvi' option description seems to be
copy-pasted and not removed
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* siri/cuddle-with-tests:
Fix regexp in release_handler test so versions are correctly replaced
Update kernel, stdlib and sasl appup tests
Minor update to test_server for finding old releases
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* lukas/kernel/fix_sendfile_no_async_tests/OTP-11903:
kernel: Skip sendfile tests that force async threads
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Add test of update instructions from current major to current
minor. Earlier only previous major to current was tested.
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* siri/ac-change_app_data/OTP-11864:
Store expanded config in application_controller:change_application_data
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If the Config given to application_controller:change_application_data
included other config files, it was only expanded for already existing
(loaded) applications. If an upgrade added a new application which had
config data in an included config file, the new application did not
get correct config data.
This is now changed so config data will be expanded for all
applications.
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This makes the pointers to other reference manuals consistent
throughout this page.
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The tests have to be skipped when the emulator running the tests does
not have any async threads.
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Also use this type in the start/2 callback spec.
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heart tests decrease atom table size so node crashes faster
Fix timetrap and sync
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* lukas/ose/master-17.0/OTP-11334:
ose: Fix erts assert failed printouts
ose: fix for packet_bytes in fd/spawn driver.
ose: Prepare slave for running on OSE
ose: Fix bug when hunting for signal proxy
ose: Implement tcp inet driver for OSE
ose: Add ifdefs for HAVE_UDP
ose: Yielding has to be done differently for background processes.
ose: Print faults in aio sys driver calls
ose: Prinout errno when to_erl read fails
ose: erlang display goes to ramlog printf
ose: Initiate stdin/stdout/stderr
ose: Break lmconf into one per load module
ose: Reset busy port when pdq empty
ose: Restore the owner of the signal
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This change relies on the assumption that all arguments before the last --
to the parent beam should be left as they are.
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The inet driver for OSE has to handle signals instead of selects
and thus the wrappers for ready_input/output are a little bit
different. However the majority of the inet code remains the same.
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* sverk/win-long-filenames/OTP-11813:
erts: Cleanup debug tracing in win_efile.c
erts: Fix file:list_dir for windows paths 258 or 259 chars long
erts: Increase MAXPATHLEN to 4096 for windows
erts: Fix bug in efile_readlink for long win paths
kernel: Fix failed tests in prim_file_SUITE for windows
erts: Fix compiler warning in win_efile.c
erts: Skip tests of paths longer than 255 characters as atoms
erts: Skip tests of file:set_cwd for too long path on Windows
erts: Make file:make_symlink/2 return {error,eperm} on Windows
erts: Revert file:set_cwd impl for windows
erts: Ignore reduntant slashes in windows paths
fix file_SUITE:cur_dir_0 for long windows paths
erts: Fix file_SUITE:make_del_dir for long paths
erts: Fix long windows paths for compressed files
erts: Use GetFullPathNameW to construct abs paths from relative ones
erts: Fix file driver to handle long paths on windows
Conflicts:
erts/emulator/drivers/win32/win_efile.c
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if the user has not the privilege SE_CREATE_SYMBOLIC_LINK_NAME
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* fogfish/embedded-arm-android:
Raspberry PI / Android a minimal cross-compile configuration
OTP-11805
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* yiannist/hipe-llvm-backend:
Support the LLVM backend in HiPE
Implement the LLVM backend
Extend RTL API to support the LLVM backend
Add support for llvm unique symbols in hipe_gensym
Add a BIF that only returns the atom ok
Move some common code in hipe_pack_constants
Add better specs in hipe_pack_constants and cleanup
OTP-11801
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Enable a cross compile Erlang/OTP platform to Android or Raspberry PI
using Android NDK. Port emulator and core application to support target
HW platform. Exclude any add-on services required for OTP platform deployment
into target hardware due to device fragmentation and jail-break requirements.
* fix erts/emulator/beam/sys.h
Disable redefinition of __noreturn macro
* port erts/emulator/sys/unix/erl_child_setup.c
Use techniques proposed by https://code.google.com/p/erlang4android to
access system properties
* fix erts/emulator/sys/unix/erl_unix_sys_ddll.c
The static linking of emulator cannot find dlerror(), dlopen() symbols
* port erts/emulator/sys/unix/sys.c
make path to shell configurable at build time
* port erts/etc/common/Makefile.in
disable librt for *-linux-androideabi
* port erts/lib_src/pthread/ethread.c
Use techniques proposed by https://code.google.com/p/erlang4android to
disable emulator crash if kernel threads are on. Replace unreliable
pthread_sigmask() by sigprocmask()
* port lib/erl_interface/src/connect/ei_connect.c
Disable call to undefined gethostid()
* port lib/erl_interface/src/connect/ei_resolve.c
Use gethostbyname_r() on Android platform
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Most dependencies introduced are exactly the dependencies to other
applications found by xref. That is, there might be real dependencies
missing. There might also be pure debug dependencies listed that
probably should be removed. Each application has to be manually
inspected in order to ensure that all real dependencies are listed.
All dependencies introduced are to application versions used in
OTP 17.0. This since the previously used version scheme wasn't
designed for this, and in order to minimize the work of introducing
the dependencies.
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Dialyzer recognizes a certain pattern that makes it possible to get
rid of 'The created fun has no local return' warnings.
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* bjorn/cuddle-with-tests:
cover_SUITE:reconnect/1: Let the other side initiate the disconnect
Attempt to provide more information if a test case fails
prim_file_SUITE: Remove the short 5 seconds timetrap timeout
shell_SUITE: Give bs_match_bin_SUITE/1 more time
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* josevalim/set_cwd-typespec:
Correct file:set_cwd/1 typespec
OTP-11787
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This is just a preparation to allow detection of older nodes
that do not understand maps (R16 and older).
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Windows do not accept long UNC paths for current working directory.
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file:set_cwd/1 accepts binaries as arguments, however the binaries
must be properly encoded as per file:native_name_encoding/0.
Also update the note under no_translation error to refer that passing
a ISO-latin-1 encoded binary under any unicode file name encoding.
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Add flags to enable and use the LLVM backend:
* to_llvm: use the LLVM pipeline for compilation (default optimization level
is O3),
* llvm_save_temps: save the intermediate files in current directory in order
to be able to debug or optimize the LLVM assembly,
* {to_llvm, O}: set the optimization level of LLVM opt and llc tools.
Add some debug support to the loader; no semantic change intented.
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Several tests cases would typically fail because of a timetrap
timeout on our older test machines running with a Linux kernel
with a lower version than 2.6.30 and the ext3 file system.
In http://lwn.net/Articles/328363/, the author desribes peformance
issues with ext3 that were fixed in 2.6.30.
Since common_test nowadays has a default timetrap timeout, there
is no need to explicitly set a timeout in each test case (except
for prolonging the default timeout).
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The loader of native code tries to avoid race condition by bringing
down the system to a single scheduler. Unfortunately, that will not
completely avoid race conditions beacuse other processes may still
run while the code is being loaded. Therefore, we must still make
sure that native code has been fully fixed up before it can be
executed.
Under unlucky circumstances, it was possible for the global name
register process to call a fun in native code before the native
code for the fun had been fully fixed up. The run-time system
would crash when running the not-fully-fixed-up code.
Here is a way to make the bug 100% reproducible. First add this
function to the 'global' module:
silly_looper(List) ->
lists:foreach(fun(E) -> put(any_atom, E) end, List),
silly_looper(List).
Then insert the following code at the beginning of the init/1
function in the 'global' module:
spawn_link(fun() -> silly_looper(lists:seq(1, 100)) end),
The run-time system will crash during start up when the native
code for the 'global' module is being loaded. What will happen
is that lists:foreach/2 (which runs in native code) will call
the native code for the fun in silly_looper/1 before the reference
to 'any_atom' has been changed from a 0 to the proper tagged
atom value. The put/2 BIF will exit when attempting to calculate
the hash value for the illegal value 0 (it is not properly tagged).
To eliminate this race condition, we must delay patching the
native code addresses for a fun into the fun entry until the native
code has been fully fixed up. We will use the new BIFs introduced
in the previous commit.
While we are at it, we will also make sure that we erase any
temporary variables in the process dictionary used by the
hipe_unified_loader module.
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This commit is a preparation for eliminating a race condition
loading the native code for modules whose BEAM code has already
been loaded. Here we introduce two new BIFs so that looking up
a fun entry is separate from setting the native address in the
fun entry.
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* lukas/ose/master/OTP-11334: (71 commits)
erts: Fix unix efile assert
ose: Use -O2 when building
ose: Expand OSE docs
ose: Add dummy ttsl driver
ose: Cleanup cleanup of mutex selection defines
ose: Polish mmap configure checks
ose: Add ose specific x-compile flags
ose: Updating fd_driver and spawn_driver for OSE
ose: Updating event and signal API for OSE
ose: Cleanup of mutex selection defines
win32: Compile erl_log.exe
ose: Remove uneccesary define
ose: Fix ssl configure test for osx
erts: Fix sys_msg_dispatcher assert
ose: Fix broken doc links
ose: Thread priorities configurable from lmconf
ose: Yielding the cpu is done "the OSE" way
ose: Start using ppdata for tse key
ose: Do not use spinlocks on OSE
ose: Fix support for crypto
...
Conflicts:
lib/crypto/c_src/crypto.c
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Create an specific OSE application that mainly contains documentation
around the OSE specific part of Erlang/OTP.
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The interface of this module is made to be as generic as possible
in order for other IPC mechanisms to mimic it and allow porting of
code between different os:es.
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