* Makefile.common (COMPILE_CXX): Add support for per-file overrides
to exclude $(nostdinc) and $(nostdincxx) from compiler flags.
(COMPILE_CC): Likewise for $(nostdinc).
winsup/cygwin/ChangeLog:
* Makefile.in (DLL_OFILES): Add libstdcxx_wrapper.o
(libstdcxx_wrapper_CFLAGS): Add flags for new module.
(_cygwin_crt0_common_STDINCFLAGS): Define per-file override.
(libstdcxx_wrapper_STDINCFLAGS, cxx_STDINCFLAGS): Likewise.
* cxx.cc: Include "cygwin-cxx.h".
(operator new): Tweak prototype for full standards compliance.
(operator new[]): Likewise.
(operator new (nothrow)): New fallback function.
(operator new[] (nothrow), operator delete (nothrow),
operator delete[] (nothrow)): Likewise.
(default_cygwin_cxx_malloc): New struct of pointers to the above,
for final last-resort fallback default.
* cygwin-cxx.h: New file.
(struct per_process_cxx_malloc): Define.
(default_cygwin_cxx_malloc): Declare extern.
* cygwin.din (__wrap__ZdaPv): Export new wrapper.
(__wrap__ZdaPvRKSt9nothrow_t, __wrap__ZdlPv,
__wrap__ZdlPvRKSt9nothrow_t, __wrap__Znaj,
__wrap__ZnajRKSt9nothrow_t, __wrap__Znwj,
__wrap__ZnwjRKSt9nothrow_t): Likewise.
* globals.cc (__cygwin_user_data): Init newly-repurposed 'forkee'
field (now 'cxx_malloc') to point to default_cygwin_cxx_malloc.
* libstdcxx_wrapper.cc: New file.
(__wrap__ZdaPv, __wrap__ZdaPvRKSt9nothrow_t, __wrap__ZdlPv,
__wrap__ZdlPvRKSt9nothrow_t, __wrap__Znaj,
__wrap__ZnajRKSt9nothrow_t, __wrap__Znwj,
__wrap__ZnwjRKSt9nothrow_t): Define wrapper functions for libstdc++
malloc operators and their overrides.
* winsup.h (default_cygwin_cxx_malloc): Declare extern.
* include/cygwin/version.h (CYGWIN_VERSION_API_MINOR): Bump.
* include/sys/cygwin.h (struct per_process_cxx_malloc): Forward
declare here.
(struct per_process::forkee): Rename and repurpose from this ...
(struct per_process::cxx_malloc): ... to this.
* lib/_cygwin_crt0_common.cc: Include cygwin-cxx.h.
(WEAK): Define shorthand helper macro.
(__cygwin_cxx_malloc): Define and populate with weak references
to whatever libstdc++ malloc operators will be visible at final
link time for Cygwin apps and dlls.
(_cygwin_crt0_common): Always look up cygwin DLL's internal
per_process data, and don't test for (impossible) failure. Inherit
any members of __cygwin_cxx_malloc that we don't have overrides
for from the DLL's default and store the resulting overall set of
overrides back into the DLL's global per_process data.
memory used by socket select functions. Combine them into a single
struct select.
* cygtls.cc: Accommodate above change throughout.
(_cygtls::init_thread): Drop initalizing of sockevt to
INVALID_HANDLE_VALUE.
(_cygtls::fixup_after_fork): Reset sockevt to NULL.
(_cygtls::remove): Don't use sockevt value to bail out prematurely.
Set sockevt to NULL. Free malloced select members.
* select.h (struct select_socket_info): Drop max_w4 member.
* select.cc (thread_socket): Use INFINITE timeout value if number of
objects to wait for is <= MAXIMUM_WAIT_OBJECTS. Use num_w4 member
of select_socket_info struct rather than dropped max_w4.
(init_tls_select_info): New inline function to initialize TLS select
members.
(start_thread_socket): Just call init_tls_select_info to initialize TLS
select members and use them later on.
(socket_cleanup): Don't free select_socket_info pointer members since
they are thread local now.
* fhandler.h (fhandler_console::create_invisible_console): Declare new
function.
(create_invisible_console_workaround): Ditto.
* fhandler_console.cc (fhandler_console::create_invisible_console): Define new
function.
(create_invisible_console_workaround): Ditto. Add too much code to deal with
broken Windows 7. Use a helper app to start an invisible console window.
(fhandler_console::need_invisible): Reorganize to use helper functions to
create invisible console.
* spawn.cc (spawn_guts): Avoid zeroing already zeroed fields in si.
(initial_env): Set jit_debug when we are automatically starting a gdb process.
* dtable.cc (dtable::get_debugger_info): Don't tty tricks when we are being
debugged by our own captive gdb, as determined by jit_debug == true.
(dtable::init_std_file_from_handle): Detect errors when initializing a tty
early rather than at random points later.
* fhandler.h (fhandler_*::init): Return int to indicate success/failure.
* fhandler.cc (fhandler_base::init): Reflect change in return value.
* pipe.cc (fhandler_pipe::init): Ditto.
(fhandler_pipe::create_selectable): Don't say we're retrying when we aren't.
* fhandler_console.cc (fhandler_console::init): Ditto. Return success/failure.
* fhandler_serial.cc (fhandler_serial::init): Ditto.
* fhandler_tty.cc (fhandler_tty_slave::init): Ditto.
(fhandler_tty_slave::open): Make debugging output more detailed.
* tty.cc (tty_list::terminate): Don't close I/O handles before all slaves have
checked in.
(tty::slave_alive): Make a non-inlined function. Check if tty pipe handles can
be created as an additional exists check.
* tty.h (tty::slave_alive): Just define here.
to store and retrieve the SO_RCVBUF and SO_SNDBUF sizes.
* fhandler_socket.cc (fhandler_socket::dup): Duplicate new members.
(fhandler_socket::send_internal): Check for SO_SNDBUF size and
restrict send to 1 byte less per KB 823764. Leave loop immediately
if WSASendMsg has been used.
* net.cc (fdsock): Change comment again. Set buffer sizes to 65536.
Store values in fhandler_socket.
(cygwin_setsockopt): Store SO_RCVBUF and SO_SNDBUF sizes in
fhandler_socket.
(cygwin_sendto): Drop call to sig_dispatch_pending.
(cygwin_recvfrom): Ditto.
(cygwin_recvmsg): Ditto.
(cygwin_sendmsg): Ditto.
(select_record::select_record): Define do-nothing constructor for "new" to
avoid gratuitous zeroing.
(select_info): New base class.
(select_pipe_info): New class with methods for dealing with pipes.
(select_socket_info): New class with methods for dealing with sockets.
(select_serial_info): Dummy class for serial.
(select_mailslot_info): Dummy class for mailslots.
(select_stuff): Define device_specific_* as actual classes rather than void *.
* dtable.h (dtable::select_read): Accommodate return value change to 'bool' and
argument change to "select_stuff".
(dtable::select_write): Ditto.
(dtable::select_except): Ditto.
* dtable.cc (dtable::select_read): Accommodate return value change to 'bool'
and argument change to "select_stuff".
(dtable::select_write): Ditto.
(dtable::select_except): Ditto.
* fhandler.h: Excise select-related classes.
(fhandler_*::select_read): Change argument to select_stuff.
(fhandler_*::select_write): Ditto.
(fhandler_*::select_except): Ditto.
* select.cc (UNIX_FD_ZERO): Use memset rather than bzero.
(select_stuff::test_and_set): Change return type to bool. Allocate
select_record on entry and let fhandler_*::select_* operate on the start.next
field of select_stuff.
(pipeinf): Delete.
(select_pipe_info::select_pipe_info): New constructor. Allocates event for
controlling pipe waits.
(select_pipe_info::~select_pipe_info): New destructor. Destroy event. Stop
thread.
(select_pipe_info::add_watch_handle): New function.
(thread_pipe): Wait for the hEvent part of any overlapped pipes before peeking.
(start_thread_pipe): Don't allocate device_specific_pipe stuff here. Assume
that it has been allocated earlier.
(pipe_cleanup): Rely on select_pipe_info destructor to clean up pipe
paraphenalia.
(fhandler_*::select_*): Derive select_record from new select_stuff argument.
(fhandler_pipe::select_*): Ditto. Allocate pipe-specific field if not already
allocated.
(serialinf): Delete.
(thread_serial): serialinf -> select_serial_info.
(fhandler_base::ready_for_read): Rewrite to accommodate change in argument to
fhandler_*::select_*.
(socketinf): Delete.
(thread_socket): socketinf -> select_socket_info.
(mailslotinf): Delete.
(thread_mailslot): mailslotinf -> select_mailslot_info.
whether the overlapped event should be tested.
(fhandler_base::read_overlapped): Pass is_overlapped state to has_ongoing_io.
(fhandler_base::write_overlapped): Ditto.
* fhandler.h (fhandler_base::has_ongoing_io): Accommodate argument change.
* select.cc (peek_pipe): Ditto.
* fhandler.cc (fhandler_base::has_ongoing_io): Define new function.
(fhandler_base::read_overlapped): Use has_ongoing_io to avoid writing when
handle has not completed last I/O.
(fhandler_base::write_overlapped): Ditto.
* select.cc (peek_pipe): Be more careful about accessing hEvent field from
get_overlapped().
DJ Delorie