newlib/winsup/cygwin/release/1.7.10

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What's new:
-----------
- New getconf tool for querying confstr(3), pathconf(3), sysconf(3), and
limits.h configuration.
- New tzset utility to generate a POSIX-compatible TZ environment
variable from the Windows timezone settings.
- The passwd tool now allows an administrator to use the -R command for
other user accounts: passwd -R username.
- Experimental: Change the way sockets are created so that Cygwin always
circumvents so-called "layered service providers" (LSPs) starting with
Windows Vista.
- signal handler functions are now dispatched in threads other than the
main thread.
- Support NcFsd filesystem.
- clock_gettime(3) and clock_getres(3) accept per-process and per-thread
CPU-time clocks, including CLOCK_PROCESS_CPUTIME_ID and
CLOCK_THREAD_CPUTIME_ID.
- New pthread functions:
- Spin Locks: pthread_spin_destroy, pthread_spin_init, pthread_spin_lock,
pthread_spin_trylock, pthread_spin_unlock.
- Stack management: pthread_attr_getstack, pthread_attr_getstackaddr,
pthread_attr_getguardsize, pthread_attr_setstack, pthread_attr_setstackaddr,
pthread_attr_setguardsize, pthread_getattr_np.
- Clock Selection: pthread_getcpuclockid, pthread_condattr_getclock,
pthread_condattr_setclock.
- Scheduling: pthread_setschedprio.
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- Signalling: pthread_sigqueue.
- Add /proc/devices, /proc/misc, /proc/sysvipc, /proc/swaps.
- Make various system functions thread cancelation points per POSIX.
- Add ioctl FIONREAD handling for non-sockets.
- dlopen now supports the Glibc-specific RTLD_NODELETE and RTLD_NOOPEN flags.
- The printf and wprintf families of functions now support the %m conversion
flag.
- Execed processes now inherit the children of their predecessor.
- Fifos have been rewritten and should now be more reliable.
- GNU/glibc error.h error reporting functions: error, error_at_line,
error_message_count, error_one_per_line, error_print_progname.
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- C99 <tgmath.h> type-generic macros.
- Other new API: clock_getcpuclockid, clock_nanosleep, clock_settime, __fpurge,
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get_current_dir_name, getgrouplist, getpt, ppoll, psiginfo, psignal,
ptsname_r, sys_siglist, sysinfo.
- cygwin_conv_path_list finally supports CCP_WIN_W_TO_POSIX and
CCP_POSIX_TO_WIN_W conversions.
What changed:
-------------
- Drop support for Windows NT4.
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- The CYGWIN=tty mode using pipes to communicate with the console in a pseudo
tty-like mode has been removed. Either just use the normal Windows console
as is, or use a terminal application like mintty.
- The CYGWIN environment variable options "envcache", "strip_title", "title",
"tty", and "upcaseenv" have been removed.
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- New heap management. Drop registry setting "heap_chunk_in_mb" in favor of
a new per-executable setting in the executable file header which can be set
using the peflags tool. Drop registry setting "heap_slop_in_mb" entirely.
- Revamp console and pseudo tty handling. Rename /dev/ttyX to /dev/consX,
/dev/ttyX to /dev/ptyX.
- Improve fork/exec performance on 64 bit systems.
- Improve Ctrl-C handling in console.
- Try harder to let fork not fail if DLLs are moved in memory which should,
in some cases, minimize the need for rebaseall.
- Try harder to send SIGHUP to children when process group leader fails.
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- Deal with Windows problem where non-blocking pipe I/O was not flushed
properly on close.
- Attempt to regularize most syscall-related strace output.
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- Improve behavior of Cygwin when started from a 64-bit process, especially
under Windows 2003.
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- Improve multi-thread/reentrancy safety with syscalls that deal with fds.
- dlopen can now find "cygFOO.dll", even if the caller specified "libFOO.so".
This is supposed to support applications which are no aware of Windows DLLs.
- Make accept(2), poll(2) and shutdown(2) behave more like on Linux.
- Raise max number of mount points from 30 to 64.
- Output of /proc/maps is closer to what Linux prints and much more useful to
examine process VM layout.
- /proc/loadavg now shows the number of currently running processes and the
total number of processes.
- /proc/version now shows the username of whomever compiled the Cygwin DLL
as well as the version of GCC used when compiling.
- Various assorted bugfixes and improvements.
- Preliminary, no guarantee, may be broken in subtle ways, Windows 8 support.