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All 'EXIT' and monitor messages are sent from 'system'
Timeouts are "sent" from 'clock_service'
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* lemenkov/crash_dump_while_dist_error/PR-947/OTP-13474:
Add patch to crash dump on large distribution
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This commit completes the tracing for processes so that
all messages sent by a process (via nifs or otherwise) will
be traced.
The commit also adds tracing of all types of events from ports.
When enabling tracing using erlang:trace, the 'all' flag now also
enables tracing on all ports.
OTP-13496
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Add the possibility to use modules as trace data receivers. The functions
in the module have to be nifs as otherwise complex trace probes will be
very hard to handle (complex means trace probes for ports for example).
This commit changes the way that the ptab->tracer field works from always
being an immediate, to now be NIL if no tracer is present or else be
the tuple {TracerModule, TracerState} where TracerModule is an atom that
is later used to lookup the appropriate tracer callbacks to call and
TracerState is just passed to the tracer callback. The default process and
port tracers have been rewritten to use the new API.
This commit also changes the order which trace messages are delivered to the
potential tracer process. Any enif_send done in a tracer module may be delayed
indefinitely because of lock order issues. If a message is delayed any other
trace message send from that process is also delayed so that order is preserved
for each traced entity. This means that for some trace events (i.e. send/receive)
the events may come in an unintuitive order (receive before send) to the
trace receiver. Timestamps are taken when the trace message is generated so
trace messages from differented processes may arrive with the timestamp
out of order.
Both the erlang:trace and seq_trace:set_system_tracer accept the new tracer
module tracers and also the backwards compatible arguments.
OTP-10267
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* henrik/update-copyrightyear:
update copyright-year
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https://bugzilla.redhat.com/show_bug.cgi?id=1291822
https://bugzilla.redhat.com/show_bug.cgi?id=1291855
https://bugzilla.redhat.com/show_bug.cgi?id=1291856
https://bugzilla.redhat.com/show_bug.cgi?id=1291857
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This is mostly a pure refactoring.
Except for the buggy cases when calling erlang:halt() with a positive
integer in the range -(INT_MIN+2) to -INT_MIN that got confused with
ERTS_ABORT_EXIT, ERTS_DUMP_EXIT and ERTS_INTR_EXIT.
Outcome OLD erl_exit(n, ) NEW erts_exit(n, )
------- ------------------- -------------------------------------------
exit(Status) n = -Status <= 0 n = Status >= 0
crashdump+abort n > 0, ignore n n = ERTS_ERROR_EXIT < 0
The outcome of the old ERTS_ABORT_EXIT, ERTS_INTR_EXIT and
ERTS_DUMP_EXIT are the same as before (even though their values have
changed).
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Bug introduced in ce8279d6a48d41f9.
Thank you valgrind.
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sverk/dist-ctrl-msg-overflow-master
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that could cause the static factory to overflow
Fix: Introduce a new factory mode FACTORY_TMP
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* sverk/setnode-rename-bug/OTP-13076:
erts: Fix bug in setnode/2
erts: Remove ERTS_PSD_DIST_ENTRY
erts: Remove faulty ASSERT in erts_proc_*_refc
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* rickard/ohmq/OTP-13047:
Fragmented young heap generation and off_heap_message_queue option
Refactor GC
Introduce literal tag
Conflicts:
erts/doc/src/erlang.xml
erts/emulator/beam/erl_gc.c
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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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that could lead strange things to happen when renaming a node with
a name that already exist in node and dist tables.
Problem:
erts_set_this_node() is a bit brutal and does not handle the case
when an old remote node name is reused as the new local node name.
Solution:
Treat erts_this_node and erts_this_dist_entry as all the others
with correct reference counting.
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Not needed as it is always set to erts_this_dist_entry (on net_kernel).
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* hamt_bin2term:
erts: Add erts_factory_trim_and_close
erts: Optimize driver_deliver_term
erts: Remove hashmap probabilistic heap overestimation
Conflicts:
erts/emulator/beam/beam_load.c
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by adding a dynamic heap factory.
"binary_to_term" is now a hybrid solution with both
a call to decoded_size() to calculate needed heap space
AND possible dynamic allocation of more heap space
if needed for big maps.
The heap size returned from decoded_size() is guaranteed
to be sufficient for all term heap data except for hashmap
nodes. All hashmap nodes are created at the end of dec_term()
by invoking the heap factory interface that may allocate more
heap space on process heap or in fragments.
With this commit it is no longer guaranteed that a message
is confined to only one heap fragment.
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to handle the "start of list" case in one place and not seven.
Note that this commit reverts (47d6fd3ccf35) back to using WSTACK
and pushing raw pointers. We disable GC while yielding, so this should not
be a problem.
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* sverk/yielding-distr-send/OTP-12232:
erts: Add constant TERM_TO_BINARY_MEMCPY_FACTOR
erts: Optimize some repeated calls to {E,W}STACK_PUSH
erts: Yield in term_to_binary when encoding big maps
erts: Remove unnecessary goto for fun encoding
erts: Yield in term_to_binary while copying large binaries
erts: Implement yielding for distributed send of large messages
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except the reference counter 'refc', as different callers
have different strategies regarding the lifetime of the binary.
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Use same mechanism as term_to_binary to yield
while encoding large messages for distributed send.
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Whenever string is passed as an argument to a DTrace probe, its length
should be properly computed. Until now in order to get length of the
input buffer size_of(char *) was used - which evalutes to 4 or 8
(depending on the architecture). To get a proper length,
size_of(DTRACE_CHARBUF_NAME(buffer_name)) should be used.
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* sverk/monitor-memory-leak/OTP-11410:
erts: Fix memory leak for distributed monitors
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Introduce unconditional ERTS_ASSERT
and use that for both ASSERT and ASSERT_EXPR.
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Having rwlock could cause high unneccesary contention on the
dist table when calling erlang:nodes() from many schedulers at
the same time.
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* pan/fix-compiler-warnings-clang-and-new-gcc:
Fix compiler warnings from GCC 4.7.1 on ARCH Linux
Fix clang compiler warnings on FreeBSD in erts
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* sverk/r16/utf8-atoms:
erl_interface: Fix bug when transcoding atoms from and to UTF8
erl_interface: Changed erlang_char_encoding interface
erts: Testcase doing unicode atom printout with ~w
erl_interface: even more utf8 atom stuff
erts: Fix bug in analyze_utf8 causing faulty latin1 detection
Add UTF-8 node name support for epmd
workaround...
Fix merge conflict with hasse
UTF-8 atom documentation
test case
erl_interface: utf8 atoms continued
Add utf8 atom distribution test cases
atom fixes for NIFs and atom_to_binary
UTF-8 support for distribution
Implement UTF-8 atom support for jinterface
erl_interface: Enable decode of unicode atoms
stdlib: Fix printing of unicode atoms
erts: Change internal representation of atoms to utf8
erts: Refactor rename DFLAG(S)_INTERNAL_TAGS for conformity
Conflicts:
erts/emulator/beam/io.c
OTP-10753
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The following are deliberately left, as I have only a list of compiler
warnings and no system to test on:
hipe/hipe_x86_signal.c:264:5: warning: no previous prototype for function '_sigaction' [-Wmissing-prototypes]
int __SIGACTION(int signum, const struct sigaction *act, struct sigaction *oldact)
^
hipe/hipe_x86_signal.c:222:21: note: expanded from macro '__SIGACTION'
^
1 warning generated.
sys/unix/sys_float.c:835:16: warning: declaration of 'struct exception' will not be visible outside of this function [-Wvisibility]
matherr(struct exception *exc)
^
sys/unix/sys_float.c:835:1: warning: no previous prototype for function 'matherr' [-Wmissing-prototypes]
matherr(struct exception *exc)
^
2 warnings generated.
drivers/unix/unix_efile.c:1504:11: warning: implicit declaration of function 'sendfile' [-Wimplicit-function-declaration]
retval = sendfile(in_fd, out_fd, *offset, SENDFILE_CHUNK_SIZE,
^
1 warning generated.
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Thanks to Ádám Gólya <[email protected]>
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rickard/r16/port-optimizations/OTP-10336
* rickard/port-optimizations/OTP-10336:
Change annotate level for emacs-22 in cerl
Update etp-commands
Add documentation on communication in Erlang
Add support for busy port message queue
Add driver callback epilogue
Implement true asynchronous signaling between processes and ports
Add erl_drv_[send|output]_term
Move busy port flag
Use rwlock for driver list
Optimize management of port tasks
Improve configuration of process and port tables
Remove R9 compatibility features
Use ptab functionality also for ports
Prepare for use of ptab functionality also for ports
Atomic port state
Generalize process table implementation
Implement functionality for delaying thread progress from unmanaged threads
Conflicts:
erts/doc/src/erl_driver.xml
erts/doc/src/erlang.xml
erts/emulator/beam/beam_bif_load.c
erts/emulator/beam/beam_bp.c
erts/emulator/beam/beam_emu.c
erts/emulator/beam/bif.c
erts/emulator/beam/copy.c
erts/emulator/beam/erl_alloc.c
erts/emulator/beam/erl_alloc.types
erts/emulator/beam/erl_bif_info.c
erts/emulator/beam/erl_bif_port.c
erts/emulator/beam/erl_bif_trace.c
erts/emulator/beam/erl_init.c
erts/emulator/beam/erl_message.c
erts/emulator/beam/erl_port_task.c
erts/emulator/beam/erl_process.c
erts/emulator/beam/erl_process.h
erts/emulator/beam/erl_process_lock.c
erts/emulator/beam/erl_trace.c
erts/emulator/beam/export.h
erts/emulator/beam/global.h
erts/emulator/beam/io.c
erts/emulator/sys/unix/sys.c
erts/emulator/sys/vxworks/sys.c
erts/emulator/test/port_SUITE.erl
erts/etc/unix/cerl.src
erts/preloaded/ebin/erlang.beam
erts/preloaded/ebin/prim_inet.beam
erts/preloaded/src/prim_inet.erl
lib/hipe/cerl/erl_bif_types.erl
lib/kernel/doc/src/inet.xml
lib/kernel/src/inet.erl
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