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sverker/on_load-on_load-bug/OTP-14612
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Symptom: VM crash when erlang:trace_pattern(on_load, ..) is set and
module with -on_load is loaded.
Problem: Tracing and -on_load clash in their use of Export.beam[1]
Solution: Do not do call set_default_trace_pattern in finish_loading_1
for modules with -on_load. finish_after_on_load_2 will do that anyway.
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* john/erts/runtime-lcnt:
Document rt_mask and add warnings about copy_save
Add an emulator test suite for lock counting
Break erts_debug:lock_counters/1 into separate BIFs
Allow toggling lock counting at runtime
Move lock flags to a common header
Enable register_SUITE for lcnt builds
Enable lcnt smoke test on all builds that have lcnt enabled
Make lock counter info independent of the locks being counted
OTP-14412
OTP-13170
OTP-14413
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The implementation is still hidden behind ERTS_ENABLE_LOCK_COUNT, and
all categories are still enabled by default, but the actual counting can be
toggled at will.
OTP-13170
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* rickard/purge-hibernated-19/ERIERL-24/OTP-14444:
Update testcase to check that purge handle hibernated process correct
Do not GC hibernated process from other processes
Fix check_process_code() on hibernated process
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* rickard/purge-hibernated-19:
Do not GC hibernated process from other processes
Fix check_process_code() on hibernated process
Conflicts:
erts/emulator/beam/beam_bif_load.c
erts/emulator/beam/erl_process.c
erts/emulator/beam/erl_process.h
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* rickard/purge-hibernated:
Do not GC hibernated process from other processes
Fix check_process_code() on hibernated process
Conflicts:
erts/emulator/beam/beam_bif_load.c
erts/emulator/beam/erl_gc.c
erts/emulator/beam/erl_process.h
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to replace macro ERTS_INTERNAL_BINARY_FIELDS
as header in Binary and friends.
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OTP-14152
* rickard/ds-features-20:
Remove experimental disclaimer on dirty schedulers
Scheduler wall time support for dirty schedulers
Always return info from system_info(dirty_[cpu|io]_schedulers*)
Improve etp-commands
Switch between scheduler types when multi-scheduling is blocked
Perform potentially long GC on dirty schedulers if available
Return and exception trace for nif-export scheduled BIFs
Optimize handling of BIF errors
Support for dirty BIFs
Reduction counting on non-tail return
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* sverker/make-export-fun-race/OTP-14144:
erts: Fix race bug between export fun creation and code loading
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Symptom: SEGV crash on ARM in delete_code() -> export_list().
Could probably happen on other machines as well.
Problem: Staging export table was iterated in an unsafe way
while an entry was added for a new export fun.
Solution: Correct write order and some memory barriers.
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* maint:
Fix issues with abandoned heap
Conflicts:
erts/emulator/beam/beam_bif_load.c
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OTP-14134
OTP-14135
* rickard/abandoned-heap-bugs:
Fix issues with abandoned heap
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* maint:
Update etp-commands for dirty schedulers
Fix scheduling of system tasks on processes executing dirty
Fix call time tracing with dirty schedulers
Fix send of exit signal to process executing dirty
Fix dirty scheduler process priority
Fix alloc-util hard-debug
Silence debug warning when no beam jump table is used with dirty schedulers
Fix check_process_code() when NifExport is in use
Fix GC when NifExport is in use
Fix saving of original arguments when rescheduling via NifExport
Conflicts:
erts/emulator/beam/beam_bif_load.c
erts/emulator/beam/erl_nif.c
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* rickard/nif-scheduling-fixes:
Fix check_process_code() when NifExport is in use - OTP-14048
Fix GC when NifExport is in use - OTP-14049
Fix saving of original arguments when rescheduling via NifExport - OTP-14050
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Avoid suspending fun caller not just if purge is already done
but also if purge of another module has started. Another purge
of the same module again cannot happen as making current to old
transition includes thread progress.
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Conflicts:
erts/emulator/beam/beam_bif_load.c
erts/emulator/beam/beam_load.c
and added macro DBG_TRACE_MFA_P in beam_load.h
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with hash table mod2mfa_tab
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if hipe is disabled.
Makes the code simpler to just ifdef away
a lot of hipe stuff.
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This is part of commit 1bd508921dd93086b05e7d0038b816b36c421d86.
I did not include the fun-checking as we have a new purge strategy
for funs in OTP 20. That remains to be solved some other way for hipe.
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Just like the BEAM loader state (as returned by
erlang:prepare_loading/2), the HiPE loader state is contained in a magic
binary.
Eventually, we will separate HiPE loading into a prepare and a finalise
phase, like the BEAM loader, where the prepare phase will be implemented
by hipe_unified_loader and the finalise phase be implemented in C by
hipe_load.c and beam_load.c, making prepare side-effect free and
finalise atomic. The finalise phase will be exposed through the
erlang:finish_loading/1 API, just like the BEAM loader, as this will
allow HiPE and BEAM modules to be mixed in the same atomic "commit".
The usage of a loader state makes it easier to keep track of all
resources allocated during loading, and will not only make it easy to
prevent leaks when hipe_unified_loader crashes, but also paves the way
for proper, leak-free, unloading of HiPE modules.
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to avoid scary merge errors.
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This commit adds two new structs to be used to represent
erlang code in erts.
ErtsCodeInfo is used to describe the i_func_info header
that is part of all Export entries and the prelude of
each function. This replaces all the BeamInstr * that
were previously used to point to these locations.
After this change the code should never use BeamInstr *
with offsets to figure out different parts of the
func_info header.
ErtsCodeMFA is a struct that is used to descripe a
MFA in code. It is used within ErtsCodeInfo and also
in Process->current.
All function that previously took Eterm * or BeamInstr *
to identify a MFA now use the ErtsCodeMFA or ErtsCodeInfo
where appropriate.
The code has been tested to work when adding a new field to the
ErtsCodeInfo struct, but some updates are needed in ops.tab to
make it work.
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A step toward better integration of hipe load and purge
Highlights:
* code_server no longer needs to call hipe_unified_loader:post_beam_load/1
Instead new internal function hipe_redirect_to_module()
is called by loading BIFs to patch native call sites if needed.
* hipe_purge_module() is called by erts_internal:purge_module/2
to purge any native code.
* struct hipe_mfa_info redesigned and only used for exported
functions that are called from or implemented by native code.
A list of native call sites (struct hipe_ref) are kept for each hipe_mfa_info.
* struct hipe_sdesc used by hipe_find_mfa_from_ra()
to build native stack traces.
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* maint:
erts: Add nif_SUITE:t_on_load
erts: Improve nif_SUITE:upgrade test
Don't leak old code when loading a modules with an on_load function
Conflicts:
erts/preloaded/ebin/erts_code_purger.beam
erts/preloaded/ebin/erts_internal.beam
erts/preloaded/src/erts_code_purger.erl
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Normally, calling code:delete/1 before re-loading the code for a
module is unnecessary but causes no problem.
But there will be be problems if the new code has an on_load function.
Code with an on_load function will always be loaded as old code
to allowed it to be easily purged if the on_load function would fail.
If the on_load function succeeds, the old and current code will be
swapped.
So in the scenario where code:delete/1 has been called explicitly,
there is old code but no current code. Loading code with an
on_load function will cause the reference to the old code to be
overwritten. That will at best cause a memory leak, and at worst
an emulator crash (especially if NIFs are involved).
To avoid that situation, we will put the code with the on_load
function in a special, third slot in Module.
ERL-240
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* maint:
Introduce literal sweep of native stack in new purge strategy
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* rickard/remove-old-purge-strategy/OTP-13844:
Avoid selective receive in code-purger process
Remove old purge strategy
Conflicts:
erts/emulator/beam/beam_bif_load.c
erts/emulator/beam/global.h
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* maint:
Fix reclaim of literal areas
Conflicts:
erts/emulator/beam/global.h
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* rickard/new-purge-strategy/OTP-13833:
Fix reclaim of literal areas
Conflicts:
erts/emulator/beam/beam_bif_load.c
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* maint:
Fix tracing of processes executing dirty
Perform check_process_code while process is executing dirty
Fix purge of code
Reclaim literal area after purge has completed
Separate literal area from code
Conflicts:
erts/emulator/beam/global.h
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* rickard/ds-purge-module/OTP-13808:
Perform check_process_code while process is executing dirty
Conflicts:
erts/doc/src/erl_nif.xml
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