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Make sure that we don't have to wait in poll before break
handling is done.
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This is not a bugfix. The change is done in order to avoid a
future bug.
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Ets tables using ordered_set could potentially get into an
internally inconsistent state.
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* bjorn/fix-warnings/OTP-9250:
Eliminate alias warning in gcc 4.5.2
erl_trace: Eliminate alias warning
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* bjorn/test-environment-improvements/OTP-9297:
erlexec: Make ERL_<version>_FLAGS behave like ERL_AFLAGS
cerl: Fix several incompatibilities with 'erl'
Teach erlexec the -emu_name_exit option
cerl: Remove ancient obsolete options
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* bjorn/fix-binary-overflow/OTP-9118:
Fix overflow in list_to_bitstring/1
Replace io_list_len() with erts_iolist_size()
Make port_command/2 reject non-byte sized bitstrings
io.c: Make io_list_vec_len() less general
iolist_size/1: Fix truncation of result
Test iolist_size/1 with bad arguments
binary_SUITE: Remove workaround for avoiding stack overflow
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Ets tables using the write_concurrency option could potentially get
into an internally inconsistent state.
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* sverker/halfword-printf-relative-terms/OTP-9292:
ETS usage of erts_printf %R
erts_printf %R for relative ets-terms in halfword-vm
Another halfword is_same-bug for ETS ordered_set
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* sverker/halfword-high-alloc/OTP-9291:
Present 'low' memory count for halfword-vm with erlang:memory()
Fix faulty values from erlang:memory() on halfword-vm
Allow allocator disable for high memory (better valgrind for halfword)
Expand the use of high memory allocation in halfword emulator
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* dc/improved_find_redist:
support new SDKs in find_redist.sh and fallback to $ERL_TOP as last resort
OTP-9287
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* rickard/gc-other/OTP-9211:
Fix bad assertions
Avoid scheduling of processes being garbage collected by others
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The contents of the ERL_<version>_FLAGS undocumented environment
variable would be added at the end of the command line passed
to the BEAM emualator (similar to ERL_ZFLAGS), making it impossible
to override (for example) "-smp" with "-smp disable" on the command
line.
To allow overriding, put the contents of ERL_<version>_FLAGS at
the beginning of the command line (similar to ERL_AFLAGS).
Since the ERL_<version>_FLAGS variable is undocumented and
unsupported, it is OK to change its behaviour in a minor release.
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Invoking 'cerl' like 'cerl -smp' would only start the smp emulator
if default was to start the non-smp emulator, otherwise 'erlexec'
would try to start 'beam.smp.smp'. Furthermore 'cerl -smp disable'
would be handled in the same way as 'cerl -smp'.
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It is difficult/impossible to find out whether an invocation of
'erl' will start the smp emulator or the non-smp emulator
(short of actually starting the emulator). Therefore we will need
a way to ask 'erlexec'.
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The -frag and -smp_frag options was used to start an (at the time)
experimental build of the emulator. The -shared and -hybrid option
was used to start experimental versions of the emulator with
alternate heap architectures.
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Atomic operations with specified barriers have specified barrier semantics.
Set and read operations have undefined barrier semantics. All other atomic
operations implied full memory barriers, except when using the libatomic_ops
library and the tilera atomics api.
Some code in the runtime system assumed that all operations used (except for
set, read and specified) implied full memory barriers. The use of the
libatomic_ops library and the tilera atomics api have therefore been modified
to behave as the other implementations.
Some atomic operations with specified barrier semantics on sparc32 have also
been been relaxed in this commit.
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Avoid creating two variable names referring to the same memory
area, because that can cause aliasing warnings in some versions of
gcc.
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Noticed-by: Jon Meredith
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The io_list_len() function returns an int, where a negative return
value indicates a type error. One problem is that an int only consists
of 32 bits in a 64-bit emulator. Changing the return type to Sint
will solve that problem, but in the 32-bit emulator, a large iolist
and a iolist with a type error will both return a negative number.
(Noticed by Jon Meredith.)
Another problem is that for iolists whose total size exceed the
word size, the result would be truncated, leading to a subsequent
buffer overflow and emulator crash.
Therefore, introduce the new erts_iolist_size() function which
returns a status indication and writes the result size through
a passed pointer. If the result size does not fit in a word,
return an overflow indication.
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Use of Uint instead of UWord could cause overflow errors on systems
with large memory use.
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Also add 'low' field in system_info(allocator)
SHORT_LIVED is still in low memory
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* egil/file-write/OTP-9276:
Update prim_file.beam
Remove unnecessary copy in prim_file:drv_command/3
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Conflicts:
erts/emulator/beam/erl_printf_term.c
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This one is less likely to provoke error as one of the terms is
always NULL-based.
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Also rename the fun_to_port/1 test case to outputv_errors/1 and
test sending more kinds of bad data to an outputv-enabled driver.
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* jf/run_erl-disable-flow-control:
Teach run_erl RUN_ERL_DISABLE_FLOWCNTRL for disabling flow control
OTP-9270
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io_list_vec_len() is slightly more general than it needs to be.
Specifically:
* The only caller always passes ERL_SMALL_IO_BIN_LIMIT as the
value for the bin_limit parameter, so the bin_limit parameter
can be eliminated.
* The only caller never passes any NULL pointers, so there is
no need test the pointers before writing through them.
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* ta/inet_drv-cleanup:
inet_drv: remove unused tcp request id
inet_drv: remove gratuitous assignment
OTP-9263
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* ms/beam-fix-format-specifiers-in-erl_exit-msg:
Fix format specifiers in erl_exit messages
OTP-9262
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Conflicts:
erts/vsn.mk
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iolist_size/1 would silently return a truncated result for iolists
whose size exceeded the word size. For example:
iolist(lists:duplicate(256, <<0:(1 bsl 24)/unit:8>>)).
would return 0 (instead of 4294967296 or 1 bsl 32).
Rewrite iolist_size/1 to accumulate the size in a bignum if
necessary and result the correct result.
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In older releases of Erlang/OTP, the '=:=' operator could run out
of stack if used to compare very deep lists. Since that problem
has been fixed, we can remove the workaround used in the deep/1
test case.
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Flow control can cause unwanted behaviour of the beam process,
if accidentally hit Ctrl-S (instead of Ctrl-D to detach) the
entire beam may be blocked.
Fix this problem by making it possible to turn off flow
control by setting the environment variable RUN_ERL_DISABLE_FLOWCNTRL.
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* ta/driver_entry-typo:
driver_entry: Remove gratuitous paren and fix typo
OTP-9254
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