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in code_SUITE:upgrade. Combining both takes time.
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from code_SUITE:upgrade
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The code of add_ref/6 contained an assertion that somehow appeared
twice. Also, a recent commit (2b2de61) suppressed an unmatched
return warning in a non-optimal way. By changing the return type
of hipe_bifs:add_ref/2 to be 'ok' instead of [] the code can be
cleaned up and simplified.
While at it, fixed the wrong indentation of some nearby code.
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* sverker/hipe-code-loadnpurge: (35 commits)
erts: Cleanup dead code
kernel,hipe: Fix dialyzer warnings
erts: Replace unsafe Module.first_hipe_ref
erts: Disable DBG_TRACE_MFA for debug build
kernel: Fix code_SUITE:upgrade for non-hipe
erts: Cleanup hipe trampoline code
erts: Remove dead alloc stats in hipe_amd64.c
erts: Remove code_SUITE:make_stub and make_stub_many_funs
erts: Let code:make_stub_module raise 'notsup'
erts: Fix bug in stack walk on risc
erts: Fix old leak for ppc hipe code
erts: Fix old leak for arm hipe code
erts: Fix old leak of sparc hipe code
erts: Fix old leak of hipe code on x86 32-bit
erts: Enable exec_alloc for all hipe architectures
erts: Remove debug printout for hipe loader state
erts: Free hipe_refs and hipe_sdesc of a failed load
erts: Refactor out hipe_purge_refs/sdesc
erts: Refactor hipe_loader_state_dtor into a true destructor
hipe: TRY fix llvm external calls to own module
...
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when failing to load native code.
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by introducing hipe_bifs:commit_patch_load/1
that creates the HipeModule.
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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 get some coverage in beam_load.c:hash_internal_genop_arg().
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and hipe_bifs:update_code_size
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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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as they are lists of #fundef records
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* rickard/time-unit/OTP-13831:
Replace usage of deprecated time units
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* nathanl/kernel/write_file-uses-writev/PR-1149/OTP-13909:
Let file:write_file/3 use writev
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code:add_pathsa/1 reverts the list of directories when adding it at
the beginning of the code path. The command line option '-pa' behaves
in the same way. This is now documented.
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Previously, this function would turn any input into a single binary
before writing. This meant it could not take advantage of the `writev`
system call if it was given a list of binaries and told to write with
`raw` mode.
To see this, start an erlang shell on the parent commit, and also
start this dtrace script:
https://github.com/evanmiller/tracewrite
like this:
sudo dtrace -s tracewrite.d -p $(pgrep beam)
In the erlang shell, run the following:
file:write_file("/tmp/tmp.txt", [<<97,98>>, <<98,97>>], [raw]).
In the dtrace output, you will see that the system call used is `write`.
Now repeat with this commit, and you will see that `writev` is used.
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* maint:
file_SUITE: Test file:write_file/3
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* sverker/include-erl_nif/PR-1171:
Use more correct delimiters for erl_nif.h include
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Extend file_SUITE:read_write_file/1 to test file:write_file/3
which was not tested at all.
While we are it, remove the superfluous roundtrips tests of
term_to_binary/1 and binary_to_term/1. Those BIFs are tested
in detail in other test suites (for example, binary_SUITE in
emulator_test).
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=== OTP-19.1 ===
Changed Applications:
- asn1-4.0.4
- common_test-1.12.3
- compiler-7.0.2
- crypto-3.7.1
- debugger-4.2.1
- dialyzer-3.0.2
- diameter-1.12.1
- edoc-0.8
- erl_docgen-0.6
- erl_interface-3.9.1
- erts-8.1
- eunit-2.3.1
- gs-1.6.2
- hipe-3.15.2
- ic-4.4.2
- inets-6.3.3
- jinterface-1.7.1
- kernel-5.1
- mnesia-4.14.1
- observer-2.2.2
- odbc-2.11.3
- parsetools-2.1.3
- reltool-0.7.2
- runtime_tools-1.10.1
- sasl-3.0.1
- snmp-5.2.4
- ssh-4.3.2
- ssl-8.0.2
- stdlib-3.1
- syntax_tools-2.1
- tools-2.8.6
- wx-1.7.1
- xmerl-1.3.12
Unchanged Applications:
- cosEvent-2.2.1
- cosEventDomain-1.2.1
- cosFileTransfer-1.2.1
- cosNotification-1.2.2
- cosProperty-1.2.1
- cosTime-1.2.2
- cosTransactions-1.3.2
- eldap-1.2.2
- et-1.6
- megaco-3.18.1
- orber-3.8.2
- os_mon-2.4.1
- otp_mibs-1.1.1
- percept-0.9
- public_key-1.2
- typer-0.9.11
Conflicts:
OTP_VERSION
lib/gs/doc/src/notes.xml
lib/gs/vsn.mk
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Anywhere but the beam sources we shouldn't #include "erl_nif.h", because
what "erl_nif.h" does is: (1) fail to find it outside of -I dirs, (2)
then treat it as if it was written like <erl_nif.h>. Using <erl_nif.h>
skips (1).
More information can be found in 6.10.2 of the C standard.
Because the examples use "erl_nif.h", NIF projects in the Erlang
ecosystem copy this verbatim and make the same mistake.
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* raimo/diffserv-socket-option/OTP-13582:
Tune 'tclass' semantics
Implement IPV6_TCLASS
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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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* bjorn/erts/on_load/ERL-240/OTP-13893:
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
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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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* tuncer/kernel/on_load-error-string/PR-1155:
Print on_load error in a more useful style
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* maint:
kernel: Correct file(3)
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