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The perf_counter is a very very cheap and high resolution timer
that can be used to timestamp system events. It does not have
monoticity guarantees, but should on most OS's expose a monotonous
time.
A special instruction has been created for this counter to further
speed up fetching it.
OTP-12908
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* maint:
Introduce time management in native APIs
Introduce time warp safe replacement for safe_fixed option
Introduce time warp safe trace timestamp formats
Conflicts:
erts/emulator/beam/erl_bif_trace.c
erts/emulator/beam/erl_driver.h
erts/emulator/beam/erl_nif.h
erts/emulator/beam/erl_trace.c
erts/preloaded/ebin/erlang.beam
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* rickard/monotonic-time-improvements/OTP-13222:
Introduce time management in native APIs
Introduce time warp safe replacement for safe_fixed option
Introduce time warp safe trace timestamp formats
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* bjorn/kernel/clean-up-code_server:
code_server: Add specs for all exported functions
code_server: Add types to the state record
code_server: Don't export internal system_* functions
Simplify starting of code server
Remove first argument of code_server:call()
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* maint:
Update documentation for code-loading functions
code: Correct the types for error returns
Eliminate run-time system crash in code:load_abs/1
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The specifications for functions that load code in the 'code'
module (e.g. code:load_file/1) have some problems:
* The specs claim that the functions can return {error,on_load}, but
they never do. However, they can return {error,on_load_failure} if
the -on_load function in a module fails.
* The specs claim that the functions can return {error,native_code},
but they never do.
While we are it, also extend the on_load_errors/1 test case to test
that the load functions return {error,on_load_failure} when an
-on_load function fails.
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There is no reason to export system_continue/3 and system_terminate/4
from code_server. Servers that use proc_lib and 'sys' to handle system
message do need those functions exported, but code_server contains a
modified copy of the system message handling code from 'sys', and that
code only make local calls to system_continue/3 and
system_terminate/4.
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There is unnecessary knowledge about the -nostick option
in the 'kernel' module. -nostick can be handled entirely
in the 'code' module.
There is no need to have both code:start_link/0 and
code:start_link/1. code:start_link/0 is sufficient.
Also get rid of error handling for things that cannot happen:
The 'init' module has made sure that init:get_argument(root)
can't fail, so there is no need for any error-reporting code.
(See e1dc0aa4.)
We also don't need to test the return value from
code_server:start_link/1, because it will always return {ok,Pid}
(or crash).
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Remove the first argument for code_server:call(). It makes no
sense. The only caller is 'code'.
Note that the code_server module is undocumented and that
code_server:call() is an internal helper function.
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The run-time system would terminate if code:load_abs/1 was
called with a filename containing any non-latin1 characters.
The reason is that code_server would attempt to construct a
module name from the filename using list_to_atom/1 and that
atoms currently are limited to the latin1 character set.
But how should the error be reported?
I have decided to that the simplest and least confusing way
is to move the call to list_to_atom/1 to 'code' module and
let it crash the calling process. The resulting stack back
trace will make it clear what the reason for the crash was.
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For some reason, there is a test in code_server that
hipe_unified_loader is loaded before trying to call it. The test was
added in R9B, but it is not clear why. Before starting the code
server, the 'code' module would always load hipe_unified_loader;
thus there is now way that the test can ever fail.
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The following functions in the 'code' module only allow the
module argument to an atom:
load_file/1
load_binary/3
ensure_loaded/1
delete/1
purge/1
soft_purge/1
get_object_code/1
Therefore, there is no reason that the corresponding implementation in
code_server should allow the module to be either an atom or a
string. Only accept an atom and remove the helper functions to_atom/1
and do_mod_call/4.
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New timestamp options for trace, sequential trace, and
system profile:
- monotonic_timestamp
- strict_monotonic_timestamp
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by moving code from code_server to erts_code_purger.
This is more or less a copy-paste from code_server.erl
to erts_code_purger.erl. All the inner mechanics of
code:purge/1 and code:soft_purge/1 are unchanged.
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* bjorn/kernel/remove-code-path-cache/OTP-13191:
Remove the code path cache in the code server
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=== OTP-18.2 ===
Changed Applications:
- asn1-4.0.1
- common_test-1.11.1
- compiler-6.0.2
- crypto-3.6.2
- dialyzer-2.8.2
- diameter-1.11.1
- erl_docgen-0.4.1
- erl_interface-3.8.1
- erts-7.2
- eunit-2.2.12
- hipe-3.14
- inets-6.1
- jinterface-1.6.1
- kernel-4.1.1
- observer-2.1.1
- parsetools-2.1.1
- public_key-1.1
- runtime_tools-1.9.2
- sasl-2.6.1
- snmp-5.2.1
- ssh-4.2
- ssl-7.2
- stdlib-2.7
- test_server-3.9.1
- tools-2.8.2
- typer-0.9.10
- wx-1.6
- xmerl-1.3.9
Unchanged Applications:
- cosEvent-2.2
- cosEventDomain-1.2
- cosFileTransfer-1.2
- cosNotification-1.2
- cosProperty-1.2
- cosTime-1.2
- cosTransactions-1.3
- debugger-4.1.1
- edoc-0.7.17
- eldap-1.2
- et-1.5.1
- gs-1.6
- ic-4.4
- megaco-3.18
- mnesia-4.13.2
- odbc-2.11.1
- orber-3.8
- os_mon-2.4
- ose-1.1
- otp_mibs-1.1
- percept-0.8.11
- reltool-0.7
- syntax_tools-1.7
- webtool-0.9
Conflicts:
OTP_VERSION
erts/vsn.mk
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* lukas/erts/forker: (28 commits)
erts: Never abort in the forked child
erts: Mend ASSERT makro for erl_child_setup
erts: Allow enomem failures in port_SUITE
erts: iter_port sleep longer on freebsd
erts: Allow one dangling fd if there is a gethost port
erts: Only use forker StackAck on freebsd
erts: It is not possible to exit the forker driver
erts: Add forker StartAck for port start flowcontrol
erts: Fix large open_port arg segfault for win32
erts: Fix memory leak at async open port
kernel: Remove cmd server for unix os:cmd
erts: Add testcase for huge port environment
erts: Move os_pid to port hash to child setup
erts: Handle all EINTR and EAGAIN cases in child setup
erts: Make child_setup work with large environments
erts: Fix forker driver ifdefs for win32
erts: Fix uds socket handling for os x
erts: Fix dereferencing of unaligned integer for sparc
erts: Flatten too long io vectors in uds write
erts: Add fd count test for spawn_driver
...
Conflicts:
erts/emulator/beam/erl_node_tables.c
erts/preloaded/src/erts_internal.erl
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Since we no longer to vfork in the emulator there is
no need to serialize the os:cmd calls through a central
command server. This greatly decreases the complexity of
this code and should make it fast+more scalable.
OTP-13089
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In practice, it does not seem that code path cache can
improve performance. Looking for any file that is not found
will cause the cache to be rebuilt, which will negate any
gain of using the cache.
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* bjorn/deprecate-random/OTP-12502:
Deprecate the 'random' module
Eliminate mentions of 'random' in documentation
mnesia tests: Replace 'random' with 'rand'
percept tests: Replace 'random' with 'rand'
system tests: Replace 'random' with 'rand'
common_test tests: Replace 'random' with 'rand'
gs: Remove the contribs directory
wx: Replace 'random' with 'rand'
stdlib tests: Replace 'random' with 'rand'
kernel test: Replace 'random' with 'rand'
debugger tests: Replace 'random' with 'rand'
compiler tests: Replace 'random' with 'rand'
Emulator test suite: Replace use of 'random' with 'rand'
Use 'rand' instead of the obsolete 'random' module
compile: Eliminate use of the obsolete 'random' module
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In most cases, we don't have to seed the random number generator,
as the rand:uniform/1 takes care about that itself.
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to support other terms, not just maps
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Conflicts:
OTP_VERSION
erts/doc/src/notes.xml
erts/vsn.mk
lib/kernel/doc/src/notes.xml
lib/kernel/src/kernel.appup.src
lib/kernel/vsn.mk
lib/ssl/doc/src/notes.xml
lib/ssl/src/ssl.appup.src
lib/ssl/src/ssl_cipher.erl
lib/ssl/vsn.mk
otp_versions.table
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* soranoba/fix-file-position/PR-646:
Unify internal error handling
Fix file:pread and :pwrite to use character encoding
Clean up code for file:position/2
Fix file:position (not raw mode)
OTP-13155
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This commit is just for debugging purposes, will probably be reverted.
It comes with a the erts_debug:copy_shared/1 BIF. If SHCOPY_DISABLE
is defined, SHCOPY starts disabled and is dynamically enabled the first
time that the BIF is called.
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* weiss/case-insensitive-lookups:
inet_res: Make host name lookups case-insensitive
OTP-13083
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A new {line_delimiter, byte()} option allows line-oriented TCP-based
protocols to use a custom line delimiting character. It is to be
used in conjunction with {packet, line}.
This option also works with erlang:decode_packet/3 when its first argument
is 'line'.
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A new {line_delimiter, byte()} option allows line-oriented TCP-based protocols
to use a custom line delimiting character. It is to be used in conjunction
with {packet, line}.
This option also works with erlang:decode_packet/3 when its first argument
is 'line'.
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OTP-13040
* stolen/unified_dist:
kernel: inet6_tcp_dist: reuse inet_tcp_dist code
Conflicts:
lib/kernel/src/inet_tcp_dist.erl
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Record field types have been modified due to commit 8ce35b2:
"Take out automatic insertion of 'undefined' from typed record fields".
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* maint:
Avoid always updating inet_dns in the primary bootstrap
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The include file inet_dns_record_adts.hrl is generated by the
Perl script inet_dns_record_adts.pl in a non-deterministic way.
That is, every time the script is run, the functions will be in
a different order. That will cause inet_dns.beam in the primary
bootstrap to be updated every time the bootstrap is updated,
even though there is no actual code change.
Modify the Perl script to sort the keys pulled out from hashes
to make the order deterministic.
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This partly reverts commit 8152505ea3793037984a7f3349ac95cc20c4e44c.
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* maint:
Update application versions
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