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* include/cygwin/version.h: Bump DLL minor version number to 5 due to all of

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the changes below.  Redefine process structure to avoid a fixed size table.
Redefine pinfo/_pinfo classes.  Use these throughout.
* dcrt0.cc (dll_crt0_1): Accomodate set_myself argument change.
(__api_fatal): Accomodate _pinfo::record_death argument change.
* exceptions.cc (really_exit): Ditto.
(sig_handle_tty_stop): Use pinfo constructor to access process info.
(events_init): Don't create pinfo_mutex since it is no longer required.
* external.cc (fillout_pinfo): Use winpids class to iterate over all system
pids.
(cygwin_internal): lock_pinfo_for_update and unlock_pinfo are now noops.
* fhandler_termios.cc (fhandler_termios::set_ctty): Use pinfo constructor to
access process info.
* fork.cc (fork): Reorganize to initialize child info after the child has
started since that is when we know the child's winpid, which is necessary to
allocate the pinfo shared memory.
* mmap.cc (recreate_mmaps_after_fork): Change arg type to _pinfo.
* pinfo.cc: Rename pinfo methods to _pinfo throughout.  Eliminate pinfo_list
stuff.
(set_myself): Accept a pid argument now.  Call pinfo initializer to initialize
myself.  Detect when this is an "execed" process and create an "indirect" pid
block.
(pinfo_init): Accomodate set_myself arg change.
(procinfo): Remove.
(pinfo::lock_pinfo): Remove.
(pinfo::unlock_pinfo): Remove.
(pinfo::init): New method.  Allocates shared memory space for process pinfo
structure.
(pinfo::record_death): Don't call locking functions.
(cygwin_winpid_to_pid): Simplify by using new pinfo constructor.
(EnumProcessesW95): New function for iterating over processes on Windows 95.
(winpids::winpids): New constructor for winpids class.  Sets up a list of
process ids.
(enum_init): Initialize w95/wnt pid enumerators.
* shared.cc (shared-info::initialize): Remove pid initialization.
* shared.h: Move pinfo stuff into pinfo.h.
(class shared_info): Remove pinfo_list element.
* signal.cc (kill_worker): Use pinfo constructor to access process info.
(kill_pgrp): Ditto.  Use winpids methods to access list of processes.
* sigproc.cc: Throughout, modify to use _pinfo where appropriate.
(proc_exists (pid_t)): New function.  Determines if a process exists based on
the pid.
(proc_exists (_pinfo *p): Use new proc_exists function above.
(proc_subproc): Copy pinfo stuff around rather than _pinfo pointers.  Try to be
careful about releasing shared memory when we don't need it anymore.  Remove
pinfo locks.
(remove_zombies): Remove pinfo memory when zombie is going away.
* sigproc.h: Reflect _pinfo/pinfo changes in sigproc.cc.
* spawn.cc (spawn_guts): Eliminate pinfo *child argument.  Reorganize to only
initialize child pinfo after process has been started and we know the windows
pid.
(_spawnve): Reflect spawn_guts changes.
* syscalls.cc (setpgid): Use pinfo constructor to access process info.
(getpgid): Ditto.
(internal_getlogin): Use _pinfo.
* winsup.h: Eliminate pinfo_mutex.  Eliminate spawn_guts declaration since it
is static now.  Reflect set_myself argument change.
* include/sys/cygwin.h: Add some PID_* enums to accomodate new pinfo stuff.
* include/cygwin/version.h: Update minor version for cygdrive changes below.
This commit is contained in:
Christopher Faylor
2000-07-29 16:24:59 +00:00
parent 53211514a0
commit 84c7d40932
29 changed files with 774 additions and 646 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
winsup/cygwin/exceptions.cc
View File

@ -315,7 +315,6 @@ try_to_debug ()
/* if any of these mutexes is owned, we will fail to start any cygwin app
until trapped app exits */
ReleaseMutex (pinfo_mutex);
ReleaseMutex (title_mutex);
/* prevent recursive exception handling */
@ -877,7 +876,7 @@ sig_handle_tty_stop (int sig)
*/
if (my_parent_is_alive ())
{
pinfo *parent = procinfo (myself->ppid);
pinfo parent (myself->ppid);
sig_send (parent, __SIGCHILDSTOPPED);
}
sigproc_printf ("process %d stopped by signal %d, parent_alive %p",
@ -1007,27 +1006,18 @@ signal_exit (int rc)
if (exit_already++)
{
/* We are going down - reset our process_state without locking. */
myself->record_death (FALSE);
myself->record_death ();
ExitProcess (rc);
}
do_exit (rc);
}
HANDLE NO_COPY pinfo_mutex = NULL;
HANDLE NO_COPY title_mutex = NULL;
void
events_init (void)
{
/* pinfo_mutex protects access to process table */
if (!(pinfo_mutex = CreateMutex (&sec_all_nih, FALSE,
shared_name ("pinfo_mutex", 0))))
api_fatal ("catastrophic failure - unable to create pinfo_mutex, %E");
ProtectHandle (pinfo_mutex);
/* title_mutex protects modification of console title. It's neccessary
while finding console window handle */
@ -1056,12 +1046,11 @@ events_init (void)
void
events_terminate (void)
{
//CloseHandle (pinfo_mutex); // Use implicit close on exit to avoid race
ForceCloseHandle (title_mutex);
exit_already = 1;
}
#define pid_offset (unsigned)(((pinfo *)NULL)->pid)
#define pid_offset (unsigned)(((_pinfo *)NULL)->pid)
extern "C" {
static void __stdcall
reset_signal_arrived () __attribute__ ((unused));