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* nox/enable-silent-rules-doc:
Document output.mk.in
Fix a typo in erts/lib_src/Makefile.in
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The code related to the introduction of unicode_string() and
unicode_char() has been removed. The types char() and string() have
been extended to include Unicode characters.
In fact char() was changed some time ago; this commit is about
cleaning up the documentation and introduce better names for some
functions.
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* rickard/r16/port-optimizations/OTP-10336:
Bump fewer vreds per task callback
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* sverk/opt-timer-wheel2:
erts: Fixate timer wheel resultion at compile time if possible
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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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Version change to reflect upcoming release candidate
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* sal/float_to_list_2/OTP-10752:
Text representation of a float formatted using given options.
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* egil/fix-win-float-exponent/OTP-10751:
erts: Force windows to use two-digit exponent
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Also, on 64 bit architectures, use 64 bit int's for the
counters and be specific about the counter variables sizes
utilizing datatypes from sys.h.
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* pan/R16/redhat_workaround:
Clean up and make the fix work on windows.
Add workaround for CentOS/RedHat writev bug to inet_drv
OTP-10747
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* lukas/erts/busy-port-tests/OTP-10336:
Add testcases for strange port scheduling scenarios
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* rickard/rg-default/OTP-10737:
Raise default reader group limit to 64
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* rickard/r16/port-optimizations/OTP-10336:
Bump reductions also for immediate driver calls
Add 'port_count' and 'port_limit' to system_info/1 spec
Fix documentation
Replace use of deprecated functions in test cases
Replace use of driver_send_term() with erl_drv_send_term()
Conflicts:
erts/preloaded/ebin/erlang.beam
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* fdm/windows_file_share_delete/OTP-10727:
Use share flags for all file operations on Windows
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This reverts commit 750ecdea08fa5fa7e32b7f3019eed96c1699427e, reversing
changes made to 2cfa0466c3b3c7bd5e3621aff0f3e2ca30addb68.
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* rickard/async-default/OTP-10736:
Use async threads by default
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* rickard/sched-wakeup-other/OTP-10661:
Change proposed scheduler wakeup strategy to be the default
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* rickard/+stbt/OTP-10668:
Add +stbt erl command line switch
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sprintf on windows uses a three-digit exponent default
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* sverk/hipe-debug-compile-fix:
Fix compiler error for hipe in debug emulator
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* lh/forget-mnemosyne/OTP-10729:
Remove what remains of the Mnemosyne code
Remove support for the query keyword and query expressions
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Use am_undefined as it seems to be more releable to exist.
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This BIF solves a problem of float_to_list/1 that doesn't allow
specifying the number of digits after the decimal point when
formatting floats.
float_to_list(Float, Options) -> string()
Float = float()
Options = [Option]
Option = {decimals, Decimals::0..249} |
{scientific, Decimals::0..249} |
compact
Returns a string which corresponds to the text representation of
a `Float` formatted using given options.
When decimals option is specified the returned value will contain
at most `Decimals` number of digits past the decimal point.
When `compact` option is provided the trailing zeros at the end
of the list are truncated (this option is only meaningful together
with the `decimals` option). When `scientific` option is provided,
the float will be formatted using scientific notation with
`Decimals` digits of precision. If `Options` is `[]` the function
behaves like `float_to_list/1`. When using `decimals` option and
the number doesn't fit in the static internal buffer of 256 bytes
the function throws `badarg`.
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* nox/enable-silent-rules/OTP-10726:
Implement ./otp_build configure --enable-silent-rules
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* egil/fix-LM_TRY_ENABLE_CFLAG:
Fix LM_TRY_ENABLE_CFLAG to use correct environment
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* nox/rm-reverse-eta-conversion/OTP-10682:
Don't use fun references in cprof_SUITE
Make trace_local_SUITE work without the reverse eta conversion
Remove the reverse eta-conversion from v3_kernel
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Conflicts:
erts/vsn.mk
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Some file operations provided by the Erlang file module
didn't open the target file with all the file share flags.
This made some concurrent file operations against the
same file fail on Windows, while on other platforms such
as GNU/Linux or Mac OS X they succeed. The operations will
fail only if they're performed concurrently by different
threads (async IO threads or scheduler threads).
For example, one Erlang process does a file:delete/1 call
while another Erlang process is doing a filelib:file_size/1
call. This made the former process get an eacces error from
the file:delete/1 call. On GNU/Linux or Mac OS X the call would
succeed. Another example is if one Erlang process attempts to
open a file for reading while another one is in the middle of
a file:read_file_info/1 call (after it opened the file and
before it closed the file).
It's easy to verify that if a file is not open with all the
share flags, it's impossible for other threads (even if they
belong to the same OS process) to open the file while the
file is not closed by the first thread.
The following test program shows this:
#include <windows.h>
#include <iostream>
// Must be an existing file
//#define SHARE_FLAGS (FILE_SHARE_READ)
static DWORD WINAPI MyThreadFunction(LPVOID lpParam);
static char *lastError();
int main(int argc, char *argv[])
{
DWORD threadId;
HANDLE threadHandle, hFile;
hFile = CreateFile(FILENAME, GENERIC_READ, SHARE_FLAGS, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hFile == INVALID_HANDLE_VALUE) {
std::cerr << "File open error from main: " <<
lastError() << std::endl;
return 1;
}
std::cout << "Main thread opened file successfully" << std::endl;
threadHandle = CreateThread(NULL, 0, MyThreadFunction, NULL, 0, &threadId);
if (threadHandle == INVALID_HANDLE_VALUE) {
std::cerr << "Thread create error from main: " <<
lastError() << std::endl;
return 1;
}
WaitForSingleObject(threadHandle, INFINITE);
CloseHandle(threadHandle);
CloseHandle(hFile);
return 0;
}
static DWORD WINAPI MyThreadFunction( LPVOID lpParam )
{
HANDLE hFile;
hFile = CreateFile(FILENAME, GENERIC_READ, SHARE_FLAGS, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hFile == INVALID_HANDLE_VALUE) {
std::cerr << "File open error from second thread: " <<
lastError() << std::endl;
return 1;
}
std::cout << "Second thread opened file successfully" << std::endl;
CloseHandle(hFile);
return 0;
}
static char *lastError()
{
static char *buf = NULL;
DWORD dw = GetLastError();
if (buf != NULL) {
LocalFree((LPTSTR) &buf);
}
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, dw, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &buf, 0, NULL);
return buf;
}
Rnning this program with SHARE_FLAGS set to 0 (as efile_fileinfo()
does for e.g.), shows that the second thread is unable to open the
file:
C:\cygwin\home\fdmanana\tmp>touch foo.bar
C:\cygwin\home\fdmanana\tmp>threads_fopen_test.exe
Main thread opened file successfully
File open error from second thread: The process cannot access the
file because it is being used by another process.
Changing the program's SHARE_FLAGS to FILE_SHARE_READ, shows that
both threads are able to open the file:
C:\cygwin\home\fdmanana\tmp>touch foo.bar
C:\cygwin\home\fdmanana\tmp>threads_test.exe
Main thread opened file successfully
Second thread opened file successfully
Same logic applies to opening files for writing or deleting and
renaming files while they're open by some other thread that didn't
specify the flags FILE_SHARE_WRITE and FILE_SHARE_DELETE.
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* mh/escript_emulator_flags_vs_shebang/OTP-10691:
escript to accept emulator arguments when script file has no shebang
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