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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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from debug and example code
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Conflicts:
OTP_VERSION
erts/doc/src/notes.xml
erts/vsn.mk
lib/runtime_tools/doc/src/notes.xml
lib/runtime_tools/vsn.mk
otp_versions.table
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* raimo/64-bit-driver-api/OTP-9795: (22 commits)
driver_SUITE.erl: Fix sys info drivers
emulator test drivers: Conform to updated driver API
runtime_tools's drivers: Conform to updated driver API
ws's xwe_driver.c: Conform to updated driver API
megaco's flex scanner: Conform to updated driver API
seq_trace_SUITE_data/echo_drv.c: Conform to updated driver API
erl_interface tests: Conform port_call_drv.c updated driver API
erl_drv_thread_SUITE_data/testcase_driver.c: Conform to updated driver API
float_SUITE_data/fp_drv.c: Conform to updated driver API
port_SUITE_data/*_drv.c: Conform to updated driver API
port_bif_SUITE_data/control_drv.c: Conform to updated driver API
send_term_SUITE_data/send_term_drv.c: Conform to updated driver API
system_profile_SUITE_data/echo_drv.c: Conform to updated driver API
trace_port_SUITE_data/echo_drv.c: Conform to updated driver API
Remove support for old drivers without ERL_DRV_EXTENDED_MARKER
built-in drivers: Add ERL_DRV_EXTENDED_MARKER and version numbers
Bump driver version to 2.0
erl_driver.h: Enlarge type on return value from call
erl_driver.h: Enlarge types on driver callbacks output, control and call
erl_driver.h: Enlarge types in driver output functions
...
Conflicts:
erts/emulator/test/driver_SUITE_data/monitor_drv.c
erts/emulator/test/driver_SUITE_data/timer_drv.c
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Use CreateFile to open files in trace_file_drv
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