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The driver in the wx application does monitoring (and
demonitoring) from non-scheduler threads. In the non-half-word
emulators, data will be modified without the protection of a
lock (which is potentially bad), but the half-word emulator will
crash in that situation.
While at it, also correct an old bug which make assertions
fail in the Kernel test suite.
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Fix safe_mul in the loader, which caused failures in the bit
syntax test cases.
Fix yet another Uint in erl_alloc.h (ERTS_CACHE_LINE_SIZE) causing
segmentation fault when we have many schedulers (why only in that
situation?).
Clean up erl_mseg (remove old code for the Linux 32-bit mmap flag).
While at it, also remove compilation warnings.
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The following test suites now work:
send_term_SUITE
trace_nif_SUITE
binary_SUITE
match_spec_SUITE
node_container_SUITE
beam_literals_SUITE
Also add a testcases for system_info({wordsize,internal|external}).
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Some test suites need to differentiate between 32-bit terms
and 32-bit pointers.
While at it, remove some more warnings in process.c for SMP and debug.
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Rewrite trace code and external coding. Also slightly correct
the interface to the match-spec engine to make tracing work.
That will make the test suites runnable.
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For cleanliness, use BeamInstr instead of the UWord
data type to any machine-sized words that are used
for BEAM instructions. Only use UWord for untyped
words in general.
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Store Erlang terms in 32-bit entities on the heap, expanding the
pointers to 64-bit when needed. This works because all terms are stored
on addresses in the 32-bit address range (the 32 most significant bits
of pointers to term data are always 0).
Introduce a new datatype called UWord (along with its companion SWord),
which is an integer having the exact same size as the machine word
(a void *), but might be larger than Eterm/Uint.
Store code as machine words, as the instructions are pointers to
executable code which might reside outside the 32-bit address range.
Continuation pointers are stored on the 32-bit stack and hence must
point to addresses in the low range, which means that loaded beam code
much be placed in the low 32-bit address range (but, as said earlier,
the instructions themselves are full words).
No Erlang term data can be stored on C stacks (enforced by an
earlier commit).
This version gives a prompt, but test cases still fail (and dump core).
The loader (and emulator loop) has instruction packing disabled.
The main issues has been in rewriting loader and actual virtual
machine. Subsystems (like distribution) does not work yet.
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The free list is still rudimentary for the mmap wrapper and
a better implementation will be needed for production quality.
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This is the first step in the implementation of the half-word emulator,
a 64-bit emulator where all pointers to heap data will be stored
in 32-bit words. Code specific for this emulator variant is
conditionally compiled when the HALFWORD_HEAP define has
a non-zero value.
First force all pointers to heap data to fall into a single 32-bit range,
but still store them in 64-bit words.
Temporary term data stored on C stack is moved into scheduler specific
storage (allocated as heaps) and macros are added to make this
happen only in emulators where this is needed. For a vanilla VM the
temporary terms are still stored on the C stack.
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* bg/sasl-infinity:
Prepare patch release
sasl: Use gen_server:call/3 with infinity timeout
OTP-8506 bg/sasl-infinity
Use an infinity timeout in all calls to gen_server:call() in the sasl
application.
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This problems occurs in some recent versions of Emacs.
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Driver threads, such as async threads, using <seealso
marker="erl_driver#ErlDrvPDL">port data locks</seealso> peeked at the port
status field without proper locking when looking up the driver queue.
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A race condition in os:cmd/1 could cause the caller to get stuck in
os:cmd/1 forever.
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A call to the BIF unregister(RegName) when a port had the name RegName
registered in the runtime system without SMP support caused a runtime
system crash. (Thanks to Per Hedeland for the bugfix and test case.)
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ODBC now handles the types SQL_WCHAR and SQL_WVARCHAR. ODBC also has a new
connection option to return all strings as binaries and also expect strings
to be binaries in the param_query function. This provides some but not a
full unicode support.
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The empty record (no fields) is now considered typed.
It is more consistent than before; the base case is
the logical one.
A record is typed iff all its fields are typed.
A record is tagged 'typed' iff it is typed.
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The erlang pretty printer (erl_pp) no longer quotes atoms in types.
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* ks/types:
file.hrl: Move out type declarations
kernel: Add types and specs
OTP-8494 ks/types
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gen_server:call/2,3 now sets up a monitor to make sure that
it will be noticed if the called process dies. Therefore,
there is almost never a good reason to use gen_server:call/2
with its default 5 seconds timeout. Use gen_server:call/3
with the 'infinity' timeout instead.
To make sure we use the 'infinity' timeout every time,
wrap the to call gen_server:call/3 in a local call/1 function
in each module.
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Having various type declarations in the file.hrl file was once upon a time
necessary since the system could not really handle remote types. Now it can
and these declarations should not be there but appear in file.erl instead.
This means that files that need to use these types can refer to them using
a remote type reference, and not having to include file.hrl - at least not
for this reason.
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A bug introduced in Parsetools 1.4.4 (R12B-2) has been fixed. (Thanks to
Manolis Papadakis.)
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Yecc failed to report reduce/reduce conflicts where one of the reductions
involved the root symbol. This bug has been fixed. (Thanks to Manolis
Papadakis.)
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Xref has been updated to use the re module instead of the deprecated regexp
module.
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The abstract type 'fun' could not be printed. This bug has been fixed.
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The Erlang code preprocessor (epp) sent extra messages on the form
{eof,Location} to the client when parsing the file attribute. This bug,
introduced in R11B, has been fixed.
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A race condition affecting Cover has been removed.
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Some files used by the asn1 test suite had mixed DOS and
Unix line endings.
Noticed-by: Richard Carlsson
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is_boolean/1 was introduced in R10B, so this is a little
bit late...
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escript:foldl/3 was not completely adapted to the changes introduced
in 6af2ac91005276add18b1c9bbf4c8fe4f8c6e040.
A partial fix has already been applied by Hakan Mattson in
4ec4a06edb5baaa0af2840943230c4a0be3a93cf.
Signed-off-by: Tuncer Ayaz <[email protected]>
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added.
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