102 lines
3.0 KiB
C++
102 lines
3.0 KiB
C++
/* dtable.h: fd table definition.
|
|
|
|
Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
|
|
2011, 2012, 2013, 2014 Red Hat, Inc.
|
|
|
|
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. */
|
|
|
|
#pragma once
|
|
|
|
/* Initial and increment values for cygwin's fd table */
|
|
#define NOFILE_INCR 32
|
|
/* Maximum size we allow expanding to. */
|
|
#define OPEN_MAX_MAX (100 * NOFILE_INCR)
|
|
|
|
#include "thread.h"
|
|
#include "sync.h"
|
|
|
|
class suffix_info;
|
|
|
|
#define BFH_OPTS (PC_NULLEMPTY | PC_FULL | PC_POSIX)
|
|
class dtable
|
|
{
|
|
fhandler_base **fds;
|
|
#ifdef NEWVFORK
|
|
fhandler_base **fds_on_hold;
|
|
#endif
|
|
fhandler_base **archetypes;
|
|
unsigned narchetypes;
|
|
unsigned farchetype;
|
|
static const int initial_archetype_size = 8;
|
|
size_t first_fd_for_open;
|
|
int cnt_need_fixup_before;
|
|
public:
|
|
size_t size;
|
|
|
|
dtable () : archetypes (NULL), narchetypes (0), farchetype (0), first_fd_for_open(3), cnt_need_fixup_before(0) {}
|
|
void init () {first_fd_for_open = 3;}
|
|
|
|
void dec_need_fixup_before ()
|
|
{ if (cnt_need_fixup_before > 0) --cnt_need_fixup_before; }
|
|
void inc_need_fixup_before ()
|
|
{ cnt_need_fixup_before++; }
|
|
bool need_fixup_before ()
|
|
{ return cnt_need_fixup_before > 0; }
|
|
|
|
void move_fd (int, int);
|
|
int vfork_child_dup ();
|
|
void vfork_parent_restore ();
|
|
void vfork_child_fixup ();
|
|
fhandler_base *dup_worker (fhandler_base *oldfh, int flags);
|
|
int extend (size_t, size_t) __reg3;
|
|
void fixup_after_fork (HANDLE);
|
|
void fixup_close (size_t, fhandler_base *);
|
|
|
|
inline int not_open (int fd)
|
|
{
|
|
lock ();
|
|
int res = fd < 0 || fd >= (int) size || fds[fd] == NULL;
|
|
unlock ();
|
|
return res;
|
|
}
|
|
int find_unused_handle (size_t start);
|
|
int find_unused_handle () { return find_unused_handle (first_fd_for_open);}
|
|
void __reg2 release (int fd);
|
|
void init_std_file_from_handle (int fd, HANDLE handle);
|
|
int dup3 (int oldfd, int newfd, int flags);
|
|
void fixup_after_exec ();
|
|
inline fhandler_base *&operator [](int fd) const { return fds[fd]; }
|
|
bool select_read (int fd, select_stuff *);
|
|
bool select_write (int fd, select_stuff *);
|
|
bool select_except (int fd, select_stuff *);
|
|
operator fhandler_base **() {return fds;}
|
|
void stdio_init ();
|
|
void get_debugger_info ();
|
|
void set_file_pointers_for_exec ();
|
|
#ifdef NEWVFORK
|
|
bool in_vfork_cleanup () {return fds_on_hold == fds;}
|
|
#endif
|
|
fhandler_base *find_archetype (device& dev);
|
|
fhandler_base **add_archetype ();
|
|
void delete_archetype (fhandler_base *);
|
|
void fixup_before_exec (DWORD win_proc_id);
|
|
void fixup_before_fork (DWORD win_proc_id);
|
|
void lock () {lock_process::locker.acquire ();}
|
|
void unlock () {lock_process::locker.release ();}
|
|
};
|
|
|
|
fhandler_base *build_fh_dev (const device&, const char * = NULL);
|
|
fhandler_base *build_fh_name (const char *, unsigned = 0, suffix_info * = NULL);
|
|
fhandler_base *build_fh_pc (path_conv& pc);
|
|
|
|
void dtable_init ();
|
|
void stdio_init ();
|
|
extern dtable fdtab;
|
|
|
|
extern "C" int getfdtabsize ();
|
|
extern "C" void setfdtabsize (int);
|