changelog

cygwin, 著名的在win32下模拟unix操作系统的东东

	Make non-inline.
	(server_shmmgr::segment_t::~segment_t): New method.
	(server_shmmgr::segment_t::is_deleted): Ditto.
	(server_shmmgr::segment_t::is_pending_delete): Ditto.
	(server_shmmgr::segment_t::mark_deleted): Ditto.
	(server_shmmgr::segment_t::attach): Ditto.
	(server_shmmgr::segment_t::detach): Ditto.
	(server_shmmgr::segment_t::find): Ditto.
	(class server_shmmgr::cleanup_t): New class.
	(server_shmmgr::_shm_atts): New private field.
	(server_shmmgr::shmat): Add a process object argument to replace
	the removed process_cache, cygpid and winpid arguments.  Remove
	the process_cache manipulations.  Move body of code to the
	segment_t::attach method.  Increment _shm_atts when required.
	Update tracing statements.
	(server_shmmgr::shmdt): Add a process object argument to replace
	the removed cygpid argument.  Move body of code to the
	segment_t::detach method.  Decrement _shm_atts when required.
	Update tracing statements.
	(server_shmmgr::shmget): Use the new segment_t::is_deleted method.
	(server_shmmgr::server_shmmgr): Initialise the new _shm_atts
	field.
	(server_shmmgr::delete_segment): Remove the CloseHandle code, as
	this is now done in the segment_t destructor.
	(client_request_shm::serve): Look up the client's process object
	and pass to the server_shmmgr::shmat and server_shmmgr::shmdt
	methods rather than passing the cache, winpid and cygpid.
	* cygserver_process.h: Add a cygpid to the process object to make
	it more useful and then pass process objects rather than winpids
	where possible.
	(cleanup_routine::cleanup): Change argument to be a pointer to a
	process object.
	(class process): Re-order fields for no discernible reason.
	(process::_cygpid): New field.
	(process::process): Add a cygpid argument.
	(process::winpid): New method.
	(process::cygpid): Ditto.
	(process::add): Make public, as it always should have been.
	(process_cache::process): Add a cygpid argument.
	* cygserver_process.cc (process::process): Add a cygpid argument
	and use it to initialise the `_cygpid' field.  Re-order
	initialisers to match new field order.
	(process::cleanup): Pass `this' rather than just the winpid to
	cleanup_routine::cleanup.
	(process_cache::process): Add a cygpid argument and pass it to the
	process object constructor.
	* include/sys/shm.h (shmatt_t): Make unsigned as per SUSv3.
	(shm_info::shm_atts): New field.

2002-09-22  Conrad Scott  <[e-mail]>

	* cygserver_shm.cc (class server_shmmgr::segment_t): Add `_'
	prefix to the names of all fields.

2002-09-22  Conrad Scott  <[e-mail]>

	* msg.cc: New file of stub functions, no functionality.
	* sem.cc: Ditto.
	* shm.cc (client_shmmgr::shmctl): Add support for an out shm_info
	buffer for the SHM_INFO command.
	(client_shmmgr::shmget): Use %X to print keys.
	* include/sys/ipc.h: Comment all fields and values.
	(IPC_PRIVATE): Change to be non-negative.
	* include/sys/msg.h: New file with SUSv3 and ipcs(8) interfaces.
	* include/sys/sem.h: Ditto.
	* include/sys/shm.h: Comment all fields and values.
	(struct shm_info): New struct.
	* cygserver_shm.h (client_request_shm::shminfo): Rename.
	(client_request_shm::shm_info): New method.
	(client_request_shm::_parameters.out.hFileMap): Move into union.
	(client_request_shm::_parameters.out.shminfo): Rename.
	(client_request_shm::_parameters.out.shm_info): New field.
	* cygserver_shm.cc (server_shmmgr::_shm_ids): Rename.
	(server_shmmgr::_shm_tot): New field.
	(server_shmmgr::shmctl): Rename `out_shminfo' argument.  Add
	`out_shm_info' argument.  Fill in the `out_shm_info' argument in
	the SHM_INFO command.
	(server_shmmgr::shmget): Check `shmflg' against the mode of
	existing segments as per Stevens 1990, p. 123.
	(server_shmmgr::server_shmmgr): Initialise the new `_shm_tot'
	field.
	(server_shmmgr::new_segment): Set ENOMEM if CreateFileMapping
	fails.  Pass `size' to new_segment.
	(server_shmmgr::new_segment): Add size argument and use it to
	check against and update the new `_shm_tot' field.
	(server_shmmgr::delete_segment): Update the new `_shm_tot' field.
	* Makefile.in (DLL_OFILES): Add new DLL object files.

2002-09-22  Conrad Scott  <[e-mail]>

	* cygserver_transport_pipes.cc: The main change is to make the
	client try harder to connect to the server if it's previously
	connected, and so has good grounds for believing that the server
	is running.
	(MAX_WAIT_NAMED_PIPE_RETRY): Change to be an enumerator.
	(WAIT_NAMED_PIPE_TIMEOUT): Ditto.
	(transport_layer_pipes::accept): Use interlocked operators on
	`pipe_instance'.
	(transport_layer_pipes::close): Rearrange so that FlushFileBuffers
	and DisconnectNamedPipe are only called for accepted endpoints.
	Use interlocked operators on `pipe_instance'.
	(transport_layer_pipes::read): Use set_errno where required.
	(transport_layer_pipes::write): Ditto.
	(transport_layer_pipes::connect): Add local static variable
	`assume_cygserver'.  Set it if a connection is made to cygserver,
	clear it if a connection is not made even after retrying.  If set,
	ignore all errors from CreateFile and retry the connection.  Catch
	the situation where WaitNamedPipe fails to wait [sic] and add a
	`Sleep (0)' so that the server gets a chance to run.

2002-09-22  Conrad Scott  <[e-mail]>

	* dcrt0.cc: Only check for cygserver if and when required.
	(dll_crt0_1): Remove call to `cygserver_init ()'.
	* fhandler_tty.cc (fhandler_tty_slave::open): Change the cygserver
	logic to allow for the fact that `cygserver_init ()' may not yet
	have been called.
	(fhandler_tty_slave::cygserver_attach_tty): Tweak the cygserver
	request logic to conform to the practice elsewhere in the code.
	* tty.cc (tty::common_init): Add an explicit call to
	`cygserver_init ()' if it hasn't already been called.
	* include/cygwin/cygserver.h (CYGSERVER_UNAVAIL): Rename from
	`CYGSERVER_DEAD'.
	(client_request_get_version::check_version): Make available in
	cygserver as well the DLL.
	(check_cygserver_available): Ditto.  Remove `check_version_too'
	argument.
	(cygserver_init): Ditto.  And likewise.
	* cygserver_client.cc (client_request_get_version::check_version):
	Make available in cygserver as well the DLL.
	(client_request::make_request): This may now be called without
	`cygserver_init ()' having been called first.  Detect this and
	call it as required.  Add tracing.
	(check_cygserver_available): Make available in cygserver as well
	the DLL.  Remove `check_version_too' argument and always check the
	version information.  And since this is called from within
	`cygserver_init ()', force `cygserver_running' before calling
	`client_request::make_request ()'.
	(cygserver_init): Make available in cygserver as well the DLL.
	Remove `check_version_too' argument.

2002-09-22  Conrad Scott  <[e-mail]>

	* cygserver_shm.cc: Implement the ipcs(8) interfaces, IPC_INFO,
	SHM_STAT and SHM_INFO.
	(server_shmmgr::segment_t::sequence): New static field.
	(server_shmmgr::segment_t::key): Remove field, use the new
	ds.shm_perm.key field instead.
	(server_shmmgr::segment_t::shmid): Remove field.
	(server_shmmgr::segment_t::intid): New field.
	(server_shmmgr::segment_t::segment_t): Use the `key' argument to
	initialise `ds.shm_perm.key'.  Change from using `shmid' to
	`intid'.
	(server_shmmgr::_shmseg_cnt): Renamed from `_shmid_cnt'.
	(server_shmmgr::_intid_max): Renamed from `_shmid_max.
	(server_shmmgr::shmat): Move the out arguments to the start of the
	argument list.  Rename the `pid' argument as `cygpid'.  Add
	tracing.  Pass an intid to `find ()', not a shmid.
	(server_shmmgr::shmctl): Add separate out arguments.  Rename the
	`pid' argument as `cygpid'.  Add support for the ipcs(8)
	interfaces.  Add tracing.  Pass an intid to `find ()', not a
	shmid.
	(server_shmmgr::shmdt): Rename the `pid' argument as `cygpid'.
	Add tracing.  Pass an intid to `find ()', not a shmid.
	(server_shmmgr::shmget): Add a separate out arguments.  Rename the
	`pid' argument as `cygpid'.  Add tracing.
	(server_shmmgr::server_shmmgr): Update for new field names.
	(server_shmmgr::find_by_key): Update for the new `ds.shm_perm.key'
	field.
	(server_shmmgr::find): Update to use the new `segment_t::intid'
	field.
	(server_shmmgr::new_segment): Rename the `pid' argument as
	`cygpid'.  Check that the requested size is within bounds.  Handle
	new error result from `new_segment (key, HANDLE)'.
	(server_shmmgr::new_segment): Work with intids, not shmids.  Check
	that the new intid is within bounds.  Update for new field names.
	(server_shmmgr::delete_segment): Pass an intid to `find ()', not a
	shmid.  Update for new field names.
	(client_request_shm::serve): Check that the incoming message
	length is the size of the `_parameters.in' struct, not of the
	whole in/out parameter union.  Likewise, set the outgoing message
	length to the size of the `_parameters.out' struct.  Update for
	the new server_shmmgr interfaces.
	* include/sys/ipc.h (ipc_perm::key): New field.
	* include/sys/shm.h (SHM_INFO): New constant.
	* cygserver_ipc.h (IPCMNI): New constant.
	(ipc_int2ext): Add `sequence' argument and munge this into the
	external ipc id.
	(ipc_ext2int_subsys): Unmunge the sequence number from the
	external ipc id.
	(ipc_ext2int): Ditto.
	(ipc_inc_id): Remove.
	(ipc_dec_id): Remove.
	* cygserver_shm.h (SHMMAX): New constant.
	(SHMMIN): Ditto.
	(SHMMNI): Ditto.
	(SHMSEG): Ditto.
	(SHMALL): Ditto.
	(client_request_shm::_parameters): Re-arrange as a union of two
	separate structs, one for in arguments, the other for out.
	(client_request_shm::shmid): Update for the new parameter layout.
	(client_request_shm::ds): Ditto.
	(client_request_shm::info): New method.
	* shm.cc (client_shmmgr::_shmat_cnt): New static field.
	(client_shmmgr::shmat): Add locking.  Add tracing.
	(client_shmmgr::shmctl): Update for ipcs(8) commands.  Add
	tracing.  Add more argument checking.
	(client_shmmgr::shmdt): Add locking.  Add tracing.  Update the new
	`_shmat_cnt' field.
	(client_shmmgr::shmget): Add tracing.
	(client_shmmgr::fixup_shms_after_fork): Add tracing.  Add
	consistency checking.
	(client_shmmgr::attach): Add more tracing.
	(client_shmmgr::new_segment): Update the new `_shmat_cnt' field.
	(client_request_shm::client_request_shm): Update for the new
	parameter layout.  Set the outgoing message length to the size of
	the `_parameters.in' struct, not of the whole in/out parameter
	union.

2002-09-22  Conrad Scott  <[e-mail]>

	* shm.cc: Remove the use of a static client_shmmgr object.
	(client_shmmgr::_instance): New static variable.
	(client_shmmgr::instance): Allocate a new shmmgr on the heap,
	rather than using a local static object.

2002-09-22  Conrad Scott  <[e-mail]>

	* cygserver_transport.cc (create_server_transport): Fix
	cut-and-paste error.

2002-09-22  Conrad Scott  <[e-mail]>

	* cygserver_client.cc (client_request::handle_request): Don't
	bother with the client request activity marker when compiled with
	debugging output.

2002-09-22  Conrad Scott  <[e-mail]>

	* cygserver_transport_pipes.cc
	(MAX_WAIT_NAMED_PIPE_RETRY): New constant.
	(WAIT_NAMED_PIPE_TIMEOUT): Ditto.
	(transport_layer_pipes::close): The `pipe' field is now either
	NULL or a valid handle, and it should never have the value
	`INVALID_HANDLE_VALUE'.
	(transport_layer_pipes::read): Ditto.
	(transport_layer_pipes::write): Ditto.
	(transport_layer_pipes::connect): Ditto.
	(transport_layer_pipes::impersonate_client): Ditto.
	(transport_layer_pipes::connect): Ditto.  New, but still bogus,
	retry logic.

2002-09-22  Conrad Scott  <[e-mail]>

	* cygserver_shm.cc (server_shmmgr::server_shmmgr): All fields have
	to be initialized now that the singleton is no longer static.

2002-09-22  Conrad Scott  <[e-mail]>

	* cygserver_shm.cc (server_shmmgr::_instance): New static field.
	(server_shmmgr::_instance_once): Ditto.
	(server_shmmgr::initialise_instance): New static method.
	(server_shmmgr::instance): Use a pthread_once_t rather than
	relying on a local static variable.

2002-09-22  Conrad Scott  <[e-mail]>

	* woutsup.h: Remove all uses of the C++ new and delete operators
	throughout cygserver until they are fully thread-safe.
	(safe_new0): New macro to replace the C++ new operator.
	(safe_new): Ditto.
	(safe_delete): New macro to replace the C++ delete operator.
	* cygserver_client.cc (client_request::handle_request): Replace
	all uses of the C++ new and delete operators with the new macros
	from "woutsup.h".
	(client_request::make_request): Ditto.
	* cygserver_process.cc (~process_cleanup): Ditto.
	(process::cleanup): Ditto.
	(process_cache::process): Ditto.
	(process_cache::check_and_remove_process): Ditto.
	* cygserver_shm.cc (server_shmmgr::new_segment): Ditto.
	(server_shmmgr::delete_segment): Ditto.
	* cygserver_transport.cc (create_server_transport): Ditto.
	* cygserver_transport_pipes.cc
	(transport_layer_pipes::accept): Ditto.
	* cygserver_transport_sockets.cc
	(transport_layer_sockets::accept): Ditto.
	* threaded_queue.cc (~threaded_queue): Ditto.
	(threaded_queue::worker_loop): Ditto.
	(threaded_queue::stop): Replace sleep(3) with win32 Sleep.
	* cygserver.cc (~server_request): Replace all uses of the C++ new
	and delete operators with the new macros from "woutsup.h".
	(server_submission_loop::request_loop): Ditto.
	(main): Ditto.  Replace sleep(3) with win32 Sleep.  Replace
	iostreams with FILEs.
	(print_usage): Replace iostreams with FILEs.
	(print_version): Ditto.

2002-09-22  Conrad Scott  <[e-mail]>

	* cygserver_transport_sockets.cc
	(transport_layer_sockets::accept): Rename local variable
	`accept_fd' to avoid shadowing the `fd' field.

2002-09-22  Conrad Scott  <[e-mail]>

	* cygwin_ipc.h: Moved (back) to "include/sys/ipc.h".
	* cygwin_shm.h: Moved (back) to "include/sys/shm.h".
	* include/sys/ipc.h: New file.
	* include/sys/shm.h: New file.
	* cygserver_shm.h: Update for new header file locations.
	* ipc.cc: Ditto.

2002-09-22  Conrad Scott  <[e-mail]>

	* cygserver_client.cc (client_request::make_request): Comment out
	a verbose tracing statement.
	* cygserver_process.cc (process_cache::sync_wait_array): Fix
	broken assert.
	* include/cygwin/cygserver.h (class client_request): Remove excess
	use of `class' qualifier in declarations.
	(class client_request_get_version): Ditto.
	(class client_request_shutdown): Ditto.
	(class client_request_attach_tty): Ditto.

2002-09-22  Conrad Scott  <[e-mail]>

	* cygserver_ipc.h: New file.
	* cygserver_shm.h: Re-written from