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* hb/file_name_type/OTP-10852:
Introduce new type file:name_all()
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* bjorn/unicode-doc/OTP-10852:
file: Document list_dir_all/1 and read_link_all/1
file: Remove note about Unicode handling being experimental
filelib: Update documentation
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* pan/unicode_filename_warnings:
prim_file: Fix error return from prim_file:list_dir/1
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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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* sverk/is_module_native-fix:
erts: Fix code:is_module_native
OTP-10870
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When the run-time system was started with +fnue, the error tuple
indicating a non-translatable filename was added as a non-proper
list tail inside an {ok,Files} term.
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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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Because {prim_file,file}:list_dir/1 no longer returns untranslatable
filenames, we must use list_dir_all/1 instead. We also need to use
read_link_all/1 instead of read_link/1.
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It produced the same result as file:read_link/1.
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6d516de001dde82c02fe050db8e3aab47914fa90 added prim_file:list_dir_all/1.
Unfortunately, only the first element in the list would be handled
as intended.
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* sc/gen_tcp_send_error_closed/OTP-10839:
Fix type of error Reason on gen_tcp:send/2
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* bjorn/stdlib/filelib-wildcard/OTP-10812:
Remove special case handling "-" at the beginning of a charset
Optimize character sets using gb_sets
Clean up and simplify the inner matching loop
Only sort the result list once, just before returning
Replace filename:join/2 with '++'
Rethink the filelib:wildcard() functions
Don't redefine error/1
Don't allow binaries as the Cwd argument for filelib:wildcard()
Don't handle binaries from file:list_dir/1
Strengthen test suite
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* bjorn/stdlib/types:
Make the file:filename() type more restrictive
c: Remove handling of binaries in return from file:list_dir/1
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Commit 70b5e24c9498225fadc08d19503269c8aad851bf broke
filelib:wildcard(Pattern, ".").
Over the years, the logic for filelib:wilcard() has become a mess
of special cases.
Probably because of premature optimization, filelib:wildcard(Pattern)
and filelib:wildcard(Pattern, Cwd) are handled differently.
They can be consolidated if we use a "." as the default Cwd argument.
We can also simplify things by compiling the Cwd argument into the
wildcard. We did not that in the initial implementation because it
used to be possible to pre-compile a wildcard and pass it to
filelib:wildcard/{1,2}. Since that is no longer possible, there is
no point in keeping the compiled wildcard "portable" (not dependent
on the Cwd argument).
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The recommended type for filenames is a list of characters (which
may be Unicode characters greater than 255). Change the
file:filename() to reflect that.
For the filename module we still need a type that can be either
a string or a binary, so we need to introduce the type
file:filename_all().
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In order to avoid an ummatched return warning in erts and make the code
more sane, the return value of the bif was changed from [] to 'ok'.
(Probably more hipe_bifs need such changes but they will have to wait.)
While at it, the code of various functions in hipe_unified_loader was
shortened by using lists:foreach/1 instead of explicit recursion.
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* pan/unicode_filename_warnings:
Add file:list_dir_all/1 and file:read_link_all/1
prim_file: Add list_dir_all() and read_link_all()
Teach prim_file:set_cwd() to avoid entering non-translatable directories
Make prim_file skip invalid filenames in unicode mode
prim_file: Refactor functions that return filenames
prim_file: Refactor handling of responses
prim_file: Always open non-file ports in binary mode
Test that list_dir("non-existing-dir") fails with the correct error
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When the TCP socket is in passive mode, it is possible that a close
message has not been delivered to the controlling process before
calling send/2. This results in the returning {error, closed} to the
caller, in the same way that recv/2,3 does. This commit adjusts the
type of the error "Reason" to include the atom 'closed'.
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* vd/code_get_mode/OTP-10823:
Added name prefix to code.xml
Add a new function code:get_mode() can be used to detect how the code servers behaves
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* mh/duplicate_name_error_message/OTP-10797:
Slightly nicer error message when node start fails due to duplicate name
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* bjorn/remove-packages/OTP-10348:
kernel docs: Remove references to specs_packages.xml
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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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When starting up an Erlang node using a node name that is already in
use, the new node used to crash with output starting with this message:
{error_logger,{{2013,1,25},{16,0,42}},"Protocol: ~p: register error: ~p~n",["inet_tcp",{{badmatch,{error,duplicate_name}},[{inet_tcp_dist,listen,1,[.....
With this change, the first line in the output changes to:
{error_logger,{{2013,1,25},{16,40,41}},"Protocol: ~tp: the name foo@localhost seems to be in use by another Erlang node",["inet_tcp"]}
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The inline attribute has been simplified due to problems with
compiling to native code. The exact cause it beyond the scope
of this commit.
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The documentation of some Unicode functions in io_lib was committed by
mistake.
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* bjorn/kernel/undefined-function-handler/OTP-10617:
Add a warning to discourage abuse of $handle_undefined_function/2
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* bjorn/warnings-zero-tolerance:
Turn warnings to errors on selected applications
runtime_tools_sup: Eliminate warning
inet_parse: Eliminate a compiler warning
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* sverk/r16/utf8-atoms:
erl_interface: Fix bug when transcoding atoms from and to UTF8
erl_interface: Changed erlang_char_encoding interface
erts: Testcase doing unicode atom printout with ~w
erl_interface: even more utf8 atom stuff
erts: Fix bug in analyze_utf8 causing faulty latin1 detection
Add UTF-8 node name support for epmd
workaround...
Fix merge conflict with hasse
UTF-8 atom documentation
test case
erl_interface: utf8 atoms continued
Add utf8 atom distribution test cases
atom fixes for NIFs and atom_to_binary
UTF-8 support for distribution
Implement UTF-8 atom support for jinterface
erl_interface: Enable decode of unicode atoms
stdlib: Fix printing of unicode atoms
erts: Change internal representation of atoms to utf8
erts: Refactor rename DFLAG(S)_INTERNAL_TAGS for conformity
Conflicts:
erts/emulator/beam/io.c
OTP-10753
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When using the async thread pool and compressed files, when
an efile driver port instance is shutdown, the efile_drv
stop callback closes the file descriptor (a gzFile instance
actually) - this is dangerous if at the same time there's
an async thread performing an operation against the file,
for example calling invoke_read(), which can result in a
segmentation fault, or calling invoke_close() which double
closes the gzFile and this in turn causes 2 consecutive calls
to driver_free() against same gzFile instance (resulting in
later unexpected crashes in erl_bestfit_alloc.c for example).
The following test program makes the emulator crash when using
the async thread pool:
-module(t2).
-export([t/1]).
t(N) ->
file:delete("foo.bar"),
% Use of 'compressed' option, for creating/writing the file,
% is irrelevant. It only matters when opening it later for
% reads - a non-compressed file open with the 'compressed'
% option goes through an internal gzFile handle (instead of
% a plain integer fd), just like a compressed file.
%{ok, Fd} = file:open("foo.bar", [raw, write, binary]),
{ok, Fd} = file:open("foo.bar", [raw, write, binary, compressed]),
ok = file:write(Fd, <<"qwerty">>),
ok = file:close(Fd),
Pid = spawn_link(fun() ->
process_flag(trap_exit, true),
loop(N)
end),
Ref = erlang:monitor(process, Pid),
receive
{'DOWN', Ref, _, _, _} ->
ok
end.
loop(0) ->
ok;
loop(N) ->
Server = self(),
Pid = spawn(fun() ->
{ok, Fd} = file:open("foo.bar", [read, raw, binary, compressed]),
Server ! continue,
% Comment the file:read/2 call to make the file:close/1 call much
% more likely to crash or end up causing efile_drv to close twice
% the fd (gzFile), which will make the emulator crash later in the
% best fit allocator (erl_bestfit_alloc.c).
_ = file:read(Fd, 5),
file:close(Fd)
end),
receive continue -> ok end,
exit(Pid, shutdown),
loop(N - 1).
Running this test when using the async thread pool:
shell> erl +A 4
Erlang R15B03 (erts-5.9.3.1) [source] [64-bit] [smp:4:4] [async-threads:4] [hipe] [kernel-poll:false]
Eshell V5.9.3.1 (abort with ^G)
1> c(t2).
{ok,t2}
2> t2:t(500000).
Segmentation fault (core dumped)
When not using the async thread pool, there are no issues:
shell> erl
Erlang R15B03 (erts-5.9.3.1) [source] [64-bit] [smp:4:4] [async-threads:0] [hipe] [kernel-poll:false]
Eshell V5.9.3.1 (abort with ^G)
1> c(t2).
{ok,t2}
2> t2:t(500000).
ok
3>
An example stack trace when the crash happens because there's
an ongoing read operation is:
Thread 1 (Thread 0x7f021cf2c700 (LWP 10687)):
#0 updatewindow (strm=0x2691bf8, out=5) at zlib/inflate.c:338
#1 0x00000000005a2ba0 in inflate (strm=0x2691bf8, flush=0) at zlib/inflate.c:1141
#2 0x000000000055c46a in erts_gzread (file=0x2691bf8, buf=0x7f0215b29e80, len=5) at drivers/common/gzio.c:523
#3 0x00000000005849ef in invoke_read (data=0x26b2228) at drivers/common/efile_drv.c:1114
#4 0x000000000050adcb in async_main (arg=0x7f021bf5cf40) at beam/erl_async.c:488
#5 0x00000000005c21a0 in thr_wrapper (vtwd=0x7fff69c6ff10) at pthread/ethread.c:106
#6 0x00007f021c573e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#7 0x00007f021c097cbd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#8 0x0000000000000000 in ?? ()
And when there's an ongoing close operation when the driver
is stopped:
Thread 1 (Thread 0x7fe5f5654700 (LWP 747)):
#0 0x0000000000459b64 in bf_unlink_free_block (block=0x10b2a70, allctr=<optimized out>, flags=<optimized out>) at beam/erl_bestfit_alloc.c:792
#1 bf_unlink_free_block (flags=0, block=0x10b2a70, allctr=0x873380) at beam/erl_bestfit_alloc.c:822
#2 bf_get_free_block (allctr=0x873380, size=<optimized out>, cand_blk=<optimized out>, cand_size=<optimized out>, flags=0) at beam/erl_bestfit_alloc.c:869
#3 0x000000000044f0dd in mbc_alloc_block (alcu_flgsp=<synthetic pointer>, blk_szp=<synthetic pointer>, size=200, allctr=0x873380) at beam/erl_alloc_util.c:1198
#4 mbc_alloc (allctr=0x873380, size=200) at beam/erl_alloc_util.c:1345
#5 0x000000000045449b in do_erts_alcu_alloc (size=200, extra=0x873380, type=165) at beam/erl_alloc_util.c:3442
#6 erts_alcu_alloc_thr_pref (type=165, extra=<optimized out>, size=192) at beam/erl_alloc_util.c:3520
#7 0x000000000055c0bf in gz_open (mode=0x5d98b2 "rb", path=0x1103418 "foo.bar") at drivers/common/gzio.c:164
#8 erts_gzopen (path=0x1103418 "foo.bar", mode=0x5d98b2 "rb") at drivers/common/gzio.c:307
#9 0x0000000000584e47 in invoke_open (data=0x1103330) at drivers/common/efile_drv.c:1857
#10 0x000000000050adcb in async_main (arg=0x7fe5f698af80) at beam/erl_async.c:488
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* fh/shell_history_search/OTP-10739:
Add search to Erlang shell's history
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