newlib/winsup/cygwin/scandir.cc
Christopher Faylor 84c7d40932 * include/cygwin/version.h: Bump DLL minor version number to 5 due to all of
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.
2000-07-29 16:24:59 +00:00

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C++

/* scandir.cc
Copyright 1998 Cygnus Solutions.
Written by Corinna Vinschen <corinna.vinschen@cityweb.de>
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include <dirent.h>
#include <stdlib.h>
#include <errno.h>
#include "winsup.h"
extern "C"
int
scandir (const char *dir,
struct dirent ***namelist,
int (*select) (const struct dirent *),
int (*compar) (const struct dirent **, const struct dirent **))
{
DIR *dirp;
struct dirent *ent, *etmp, **nl = NULL, **ntmp;
int count = 0;
int allocated = 0;
if (!(dirp = opendir (dir)))
return -1;
int prior_errno = get_errno ();
set_errno (0);
while ((ent = readdir (dirp)))
{
if (!select || select (ent))
{
/* Ignore error from readdir/select. See POSIX specs. */
set_errno (0);
if (count == allocated)
{
if (allocated == 0)
allocated = 10;
else
allocated *= 2;
ntmp = (struct dirent **) realloc (nl, allocated * sizeof *nl);
if (!ntmp)
{
set_errno (ENOMEM);
break;
}
nl = ntmp;
}
if (!(etmp = (struct dirent *) malloc (sizeof *ent)))
{
set_errno (ENOMEM);
break;
}
*etmp = *ent;
nl[count++] = etmp;
}
}
if ((prior_errno = get_errno ()) != 0)
{
closedir (dirp);
if (nl)
{
while (count > 0)
free (nl[--count]);
free (nl);
}
/* Ignore errors from closedir() and what not else. */
set_errno (prior_errno);
return -1;
}
closedir (dirp);
set_errno (prior_errno);
qsort (nl, count, sizeof *nl, (int (*)(const void *, const void *)) compar);
if (namelist)
*namelist = nl;
return count;
}
extern "C"
int
alphasort (const struct dirent **a, const struct dirent **b)
{
return strcoll ((*a)->d_name, (*b)->d_name);
}