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* egil/erts/high_accuracy_sleep/OTP-12236:
erts: Add high accuracy poll timeouts
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* aw/native-cpu_sup/OTP-12730:
erts: Fix configure.in
os_mon: rename send() to sendi() in cpu_sup.c
os_mon: cpu_sup should use native sysctl/libkvm calls on BSD
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* sverk/erts-fp-exception-fixes/OTP-12717:
erts: Disable float exceptions for clang/llvm
erts: Increase buffer in erts_fp_check_init_error
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* rickard/time-improvement/OTP-11997:
Allow execution of estone suite on pre OTP-18 systems
Add parallel time monotonicity test-case
Replace usage of erlang:now() in line-tracing
Replace erlang:now() usage in emulator suite
Replace erlang:now() usage in system suite
Misc time improvements
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* henrik/update-javaversion:
update java version
OTP-12715
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- Possibility to chose different clock sources
- Improved mach clock usage
- Improved linux clock_gettime() usage
- ...
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Change erts/configure.in to force-disable FP exceptions if
the VM is compiled by clang/llvm. clang/llvm generates FP
code which does not work with FP exceptions (whether unmasked
as used in the Erlang VM, or masked followed by tests of
which are signalled). This is a known long-standing problem.
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Don't repeat cpu_sup in os_mon_programs - some OS gets confused, i.e. illumos.
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Using 'AC_EGREP_CPP(yes' without restraining the pattern always return
true if it runs from a path containing the string 'yes'.
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The configuration code which canonicalizes the operating system
name into OPSYS requires Linux to be spelled 'linux' or 'Linux'.
This is a problem in some build environments, e.g. RPM, which
supply --build and --host using the longer 'linux-gnu' spelling.
The effect is that OPSYS becomes 'noopsys' and some checks in
erts/configure.in do not work as expected, e.g. the auto-enabling
of HiPE may not happen.
Fixed by matching on 'linux*' not just 'linux'.
On ARM there are even longer variants such as 'linux-gnueabi' and
'linux-gnueabihf': these are also correctly mapped to 'linux' now.
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Different poll/select implementations have different ways
to handle timeouts of < ms accuracy. Most have extended
API like pselect or such, while others rely on using
timerfds (epoll_wait). If no high accuracy timeout is
available, we simply round up to nearest ms. If we do not
roundup we will spin the last ms when waiting for a timeout
which is not desirable.
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* rickard/gcc-atomics/OTP-12383:
Improve ethread atomics based on GCC builtins
Conflicts:
erts/aclocal.m4
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Perfctr is a Linux kernel extension that allows programmatic access
to the performance monitoring counters found in most current CPUs.
However, development of perfctr ceased after 2010, and it cannot be
used with Linux kernels newer than 2.6.32.
Therefore the perfctr support code in the Erlang VM is effectively
dead code, so this patch removes it.
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* oliv3/math_log2/OTP-12411:
Add math:log2/1
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* Use of __atomic builtins when available.
* Improved configure test that checks for missing memory
barrier in __sync_synchronize(). The old approach was to
verify known working gcc versions and check gcc version at
compile time. Besides not being very safe, the old approach
often unnecessarily caused usage of the very expensive
workaround.
* Introduced (no overhead) workaround for missing clobber in
__sync_synchronize() when using buggy LLVM implementation of
__sync_synchronize().
* Implement native memory barriers for ARM processors supporting
the DMB instruction.
* Use of volatile store on Alpha as atomic set operation if no
__atomic_store_n() is available (already used on x86/x86_64
Sparc V9, PowerPC, and MIPS). Fallback used when not using
volatile store is typically very expensive.
* Use volatile load on Alpha and ARM as atomic read operation
if no __atomic_load_n() is available (already used on
x86/x86_64 Sparc V9, PowerPC, and MIPS). Fallback when not
using volatile load is typically very expensive.
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This avoids forking off with os:cmd every time we just want to
collect the load averages. riak does this every second, which
results in a lot of unnecessary load.
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Handle peer addresses that are unconfirmed (i.e. in state SCTP_UNCONFIRMED).
Handle unknown states instead of using ASSERT
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When configuring erts to support dynamic trace via dtrace, be sure to clean
up the temporary file "erts/foo-dtrace.h" used to help check for dtrace
support. Otherwise, it shows up as an untracked file in git.
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* sverk/with-ssl-rpath/OTP-12316:
erts,crypto: Add configure option --with-ssl-rpath
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Signed-off-by: Peter Lemenkov <[email protected]>
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OS X Mavericks builds result in a number of warnings about finite() being
deprecated, like these:
beam/erl_arith.c:451:7: warning: 'finite' is deprecated: first deprecated in OS X 10.9 [-Wdeprecated-declarations]
ERTS_FP_ERROR(p, f1.fd, goto badarith);
^
sys/unix/erl_unix_sys.h:319:33: note: expanded from macro 'ERTS_FP_ERROR'
^
sys/unix/erl_unix_sys.h:244:51: note: expanded from macro '__ERTS_FP_ERROR'
^
/usr/include/math.h:718:12: note: 'finite' has been explicitly marked deprecated here
extern int finite(double) __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_0, __MAC_10_9, __IPHONE_NA, __IPHONE_NA);
Add checks to use isfinite() instead of finite() where available. Verified
on OS X Mavericks 10.9.5 and Ubuntu 12.04.
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* sverk/with-ssl-incl:
Correct SSL_RUNTIME_LIBDIR when erl_xcomp_sysroot ends with a /
Add configure option --with-ssl-incl=PATH
OTP-12215
OTP-12216
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to be used together with --with-ssl=PATH if the include directory
is in another location.
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* lukas/docfixes-17.3/OTP-12152:
Fix some spelling misstakes
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Similar to debugging with Valgrind, it's very useful to enable
-fsanitize= switches to catch bugs at runtime.
$ ./configure
Result: no sanitizer enabled
$ ./configure --enable-sanitizers
Result: -fsanitize=address,undefined
$ ./configure --enable-sanitizers=address,thread,undefined
Result: -fsanitize=address,thread,undefined
$ ./configure --enable-sanitizers=undefined
Result: -fsanitize=undefined
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* Check of atomics on bsd
* Add --enable-systemd for epmd
* Remove unused --enable-tsp option
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* matwey/systemd/OTP-11829:
Add systemd socket activation for epmd.
Conflicts:
erts/epmd/src/epmd_int.h
Extra ticket: OTP-11828
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* sverk/halfword-deprecate/OTP-11777:
erts: Deprecate halfword emulator
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In c7ddafbe, which disabled floating point exceptions on Linux,
floating point exceptions were accidentally enabled on MacOS X.
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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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To enable it you have to modify the OSESSL variable in the
ose xcomp file.
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Make it possible to change the number of write_concurrency locks to use. This
is usefull to change when you for some reason want to use more/less locks
per write_concurrency ets table. eg. OSs with a limit on how many mutexes
can exist at once.
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This port has support for both non-smp and smp.
It contains a new way to do io checking in which erts_poll_wait
receives the payload of the polled entity. This has implications
for all linked-in drivers.
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* rickard/configure-defaults/OTP-11723:
Always default to disabled floating point exceptions on Linux
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This since there exist unresolved stability issues in the implementation
for Linux.
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* rickard/assumed-cacheline-size/OTP-11742:
Introduce configure option --with-assumed-cache-line-size=SIZE
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* vinoski/ds2:
further enhancements for dirty schedulers
allow optional whitespace in dirty scheduler erl options
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Add support for setting the number of dirty CPU schedulers online via
erlang:system_flag/2. Assuming the emulator is built with dirty schedulers
enabled, the number of dirty CPU schedulers online may not be less than 1,
nor greater than the number of dirty CPU schedulers available, nor greater
than the number of normal schedulers online. Dirty CPU scheduler threads
that are taken offline via system_flag/2 are suspended. The number of dirty
CPU schedulers online may be adjusted independently of the number of normal
schedulers online, but if system_flag/2 is used to set the number of normal
schedulers online to a value less than the current number of normal
schedulers online, the number of dirty CPU schedulers online is decreased
proportionally. Likewise, if the number of normal schedulers online is
increased, the number of dirty CPU schedulers online is increased
proportionally. For example, if 8 normal schedulers and 4 dirty CPU
schedulers are online, and system_flag/2 is called to set the number of
normal schedulers online to 4, the number of dirty CPU schedulers online is
also decreased by half, to 2. Subsequently setting the number of normal
schedulers online back to 8 also sets the number of dirty CPU schedulers
online back to 4. Augment the system_flag/2 documentation in the erlang man
page to explain this relationship between schedulers_online and
dirty_cpu_schedulers_online.
Also ensure that all dirty CPU and I/O schedulers are suspended when
multi-scheduling is blocked via system_flag/2, and brought back online when
multi-scheduling is unblocked.
Add Rickard Green's rewritten check_enqueue_in_prio_queue() function that
inspects process state more thoroughly to determine if to enqueue it and if
so on what queue, including dirty queues when appropriate.
Make sure dirty NIF jobs do not trigger erlang:system_monitor long_schedule
messages.
Add more dirty scheduler testing to the scheduler test suite.
Remove the erts_no_dirty_cpu_schedulers_online global variable, since it's
no longer needed.
Execute dirty NIFs on a normal scheduler thread while multi-scheduling
blocking is in effect. Evacuate any dirty jobs residing in the dirty run
queues over to a normal run queue when multi-scheduling is blocked.
Allow dirty schedulers to execute aux work.
Set the dirty run queues halt_in_progress flag when halting the normal
schedulers.
Change dirty scheduler numbers to a structure including both scheduler
number and type, either dirty CPU or dirty I/O. Add some assertions to
ensure that dirty CPU schedulers operate only on dirty CPU scheduler
process flags, and the same for dirty I/O schedulers.
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