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* The youngest generation of the heap can now consist of multiple
blocks. Heap fragments and message fragments are added to the
youngest generation when needed without triggering a GC. After
a GC the youngest generation is contained in one single block.
* The off_heap_message_queue process flag has been added. When
enabled all message data in the queue is kept off heap. When
a message is selected from the queue, the message fragment (or
heap fragment) containing the actual message is attached to the
youngest generation. Messages stored off heap is not part of GC.
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to use real C struct with correct types
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to use a real C struct instead of array.
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And remove old case of using only page alignment (12 bits).
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and remove that magic "-40" from default mmbcs for ll_alloc
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* sverk/hipe-fix-literal-crc:
erts,hipe,dialyzer: Fix hipe checkum of target runtime system
erts: Change THE_NON_VALUE to not be hard coded in hipe compiler
OTP-12962
OTP-12963
OTP-12964
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Main problem:
A faulty HIPE_LITERAL_CRC was not detected by the loader.
Strangeness #1:
Dialyzer should ask the hipe compiler about the target checksum,
not an internal bif.
Strangeness #2:
The HIPE_SYSTEM_CRC checksum was based on the HIPE_LITERALS_CRC
checksum.
Solution:
New HIPE_ERTS_CHECKSUM which is an bxor of the two (now independent)
HIPE_LITERALS_CRC and HIPE_SYSTEM_CRC.
HIPE_LITERALS_CRC represents values that are assumed to stay constant
for different VM configurations of the same arch, and are therefor
hard coded into the hipe compiler.
HIPE_SYSTEM_CRC represents values that may differ between VM variants.
By default the hipe compiler asks the running VM for this checksum,
in order to create beam files for the same running VM.
The hipe compiler can be configured (with "make XCOMP=yes ...") to
create beam files for another VM variant, in which case HIPE_SYSTEM_CRC
is also hard coded.
ToDo:
Treat all erts properties the same. Either ask the running VM or hard
coded into hipe (if XCOMP=yes). This will simplify and reduce the risk
of dangerous mismatches. One concern might be the added overhead
from more frequent calls to hipe_bifs:get_rts_param.
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* sverk/hipe-maps-merge-wrapper:
erts: Fix hipe bug for maps:merge/2
erts: Beautify hipe wrapper macro
OTP-12965
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Add forgotten HIPE_WRAPPER_BIF_DISABLE_GC which
could lead to stack-heap overrun if unlucky with the
yielding during maps:merge when called by native hipe code.
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Instead ask running VM for the value of THE_NON_VALUE,
which is different between opt and debug VM.
Same hipe compiler can now compile for both opt and debug VM.
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Conflicts:
OTP_VERSION
erts/vsn.mk
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* maint:
erts: Make sure to unlock status lock when setting process prio
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* lukas/erts/process_priority_unlock/OTP-12943:
erts: Make sure to unlock status lock when setting process prio
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* vinoski/stderr-eagain/OTP-12942:
Handle ERRNO_BLOCK in fd_driver async functions
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Several users on erlang-questions have reported problems with recent
releases where output to standard_error causes standard_error_sup to
die from receiving an unexpected eagain error. In the fd_driver,
change the fd_async() function to handle EINTR, and change
fd_ready_async() to handle ERRNO_BLOCK. Add a new test to
standard_error_SUITE to generate output to standard_error and ensure
that standard_error_sup does not die. Thanks to Kota Uenishi for
contributing the test case.
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* maint:
erts: Don't abort when a system process is terminated
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* lukas/erts/system_process_core/OTP-12934:
erts: Don't abort when a system process is terminated
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* maint:
Teach smp VM how to deal with crash of a linked trace port
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* sverk/smp-trace-port-exit-bug/OTP-12901:
Teach smp VM how to deal with crash of a linked trace port
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Problem: The sys-msg-dispather crashes the VM when trying to send
exit signals from the links of the terminating trace port.
If try-lock of the linked process fails, a pending exit is
scheduled and erts_scheduler_data() is then called to find
"my" run queue. But sys-msg-dispatcher is not a scheduler
and has no scheduler data, hence SEGV.
Fix: If not a scheduler and we cannot get process locks,
schedule process in its previous run-queue.
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* maint:
Fix crash when disassembling modules with BIFs
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* bjorn/erts/beam_debug:
Fix crash when disassembling modules with BIFs
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* lukas/ose/remove/OTP-12573:
Remove OSE from erl_interface
ose: Remove all code related to the OSE port
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The OSE port is no longer supported and this commit removed it
and any changes related to it. The things that were general
improvements have been left in the code.
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* maint:
Updated OTP version
Prepare release
Fix calculation of end time
Prefer monotonic time that stop during suspend
Avoid unnecessary copying of data when retrieving corrected monotonic time
Add the --enable-gettimeofday-as-os-system-time configure switch
Conflicts:
OTP_VERSION
erts/vsn.mk
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* maint-18:
Updated OTP version
Prepare release
Fix calculation of end time
Prefer monotonic time that stop during suspend
Avoid unnecessary copying of data when retrieving corrected monotonic time
Add the --enable-gettimeofday-as-os-system-time configure switch
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* rickard/end-time-fix/OTP-12896:
Fix calculation of end time
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* rickard/monotonic-clock-source/OTP-12895:
Prefer monotonic time that stop during suspend
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* rickard/read_corrected_time/OTP-12894:
Avoid unnecessary copying of data when retrieving corrected monotonic time
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* rickard/gettimeofday/OTP-12892:
Add the --enable-gettimeofday-as-os-system-time configure switch
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* rickard/non-smp-trace-port-exit-bug/OTP-12889:
Teach non-smp VM how to deal with trace port crash
Test case testing crash in tracer port
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