62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
/* dtable.h: fd table definition.
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Copyright 2000 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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/* Initial and increment values for cygwin's fd table */
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#define NOFILE_INCR 32
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class dtable
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{
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fhandler_base **fds;
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fhandler_base **fds_on_hold;
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int first_fd_for_open;
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int cnt_need_fixup_before;
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public:
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size_t size;
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dtable () : first_fd_for_open(3), cnt_need_fixup_before(0) {}
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void dec_need_fixup_before ()
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{ if (cnt_need_fixup_before > 0) --cnt_need_fixup_before; }
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void inc_need_fixup_before ()
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{ ++cnt_need_fixup_before; }
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BOOL need_fixup_before ()
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{ return cnt_need_fixup_before > 0; }
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int vfork_child_dup ();
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void vfork_parent_restore ();
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fhandler_base *dup_worker (fhandler_base *oldfh);
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int extend (int howmuch);
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void fixup_before_exec (DWORD win_proc_id);
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void fixup_before_fork (DWORD win_proc_id);
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void fixup_after_fork (HANDLE);
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fhandler_base *build_fhandler (int fd, DWORD dev, const char *name,
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int unit = -1);
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fhandler_base *build_fhandler (int fd, const char *name, HANDLE h);
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int not_open (int n) __attribute__ ((regparm(1)));
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int find_unused_handle (int start);
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int find_unused_handle () { return find_unused_handle (first_fd_for_open);}
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void release (int fd);
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void init_std_file_from_handle (int fd, HANDLE handle, DWORD access, const char *name);
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int dup2 (int oldfd, int newfd);
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void fixup_after_exec (HANDLE, size_t, fhandler_base **);
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inline fhandler_base *operator [](int fd) { return fds[fd]; }
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select_record *select_read (int fd, select_record *s);
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select_record *select_write (int fd, select_record *s);
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select_record *select_except (int fd, select_record *s);
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operator fhandler_base **() {return fds;}
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};
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void dtable_init (void);
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void stdio_init (void);
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extern dtable fdtab;
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extern "C" int getfdtabsize ();
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extern "C" void setfdtabsize (int);
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