9ac421686a
* pinfo.cc (pinfo::thisproc): Define. Rename from set_myself. Set procinfo to NULL to avoid confusing subsequent init. (pinfo_init): Accommodate set_myself -> pinfo::thisproc rename. * dcrt0.cc (child_info_fork::handle_fork): Ditto. (child_info_spawn::handle_spawn): Ditto.
240 lines
6.5 KiB
C++
240 lines
6.5 KiB
C++
/* pinfo.h: process table info
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Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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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#ifndef _PINFO_H
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#define _PINFO_H
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#include <sys/resource.h>
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#include "thread.h"
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struct commune_result
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{
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char *s;
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int n;
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HANDLE handles[2];
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};
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enum picom
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{
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PICOM_EXTRASTR = 0x80000000,
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PICOM_CMDLINE = 1,
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PICOM_CWD = 2,
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PICOM_ROOT = 3,
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PICOM_FDS = 4,
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PICOM_FD = 5,
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PICOM_PIPE_FHANDLER = 6
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};
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#define EXITCODE_SET 0x8000000
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#define EXITCODE_NOSET 0x4000000
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#define EXITCODE_RETRY 0x2000000
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#define EXITCODE_OK 0x1000000
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class fhandler_pipe;
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class _pinfo
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{
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public:
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/* Cygwin pid */
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pid_t pid;
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/* Various flags indicating the state of the process. See PID_
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constants in <sys/cygwin.h>. */
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DWORD process_state;
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DWORD exitcode; /* set when process exits */
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#define PINFO_REDIR_SIZE ((char *) &myself.procinfo->exitcode - (char *) myself.procinfo)
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/* > 0 if started by a cygwin process */
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DWORD cygstarted;
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/* Parent process id. */
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pid_t ppid;
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/* dwProcessId contains the processid used for sending signals. It
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will be reset in a child process when it is capable of receiving
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signals. */
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DWORD dwProcessId;
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/* Used to spawn a child for fork(), among other things. */
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char progname[NT_MAX_PATH];
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/* User information.
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The information is derived from the GetUserName system call,
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with the name looked up in /etc/passwd and assigned a default value
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if not found. This data resides in the shared data area (allowing
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tasks to store whatever they want here) so it's for informational
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purposes only. */
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__uid32_t uid; /* User ID */
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__gid32_t gid; /* Group ID */
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pid_t pgid; /* Process group ID */
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pid_t sid; /* Session ID */
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int ctty; /* Control tty */
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bool has_pgid_children;/* True if we've forked or spawned children with our GID. */
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/* Resources used by process. */
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long start_time;
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struct rusage rusage_self;
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struct rusage rusage_children;
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int nice;
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/* Non-zero if process was stopped by a signal. */
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char stopsig;
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inline void set_has_pgid_children ()
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{
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if (pgid == pid)
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has_pgid_children = 1;
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}
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inline void set_has_pgid_children (bool val) {has_pgid_children = val;}
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commune_result commune_request (__uint32_t, ...);
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bool alive ();
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fhandler_pipe *pipe_fhandler (HANDLE, size_t &);
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char *fd (int fd, size_t &);
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char *fds (size_t &);
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char *root (size_t &);
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char *cwd (size_t &);
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char *cmdline (size_t &);
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void set_ctty (class tty_min *, int, class fhandler_tty_slave *);
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HANDLE dup_proc_pipe (HANDLE) __attribute__ ((regparm(2)));
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void sync_proc_pipe ();
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bool alert_parent (char);
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int __stdcall kill (siginfo_t&) __attribute__ ((regparm (2)));
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bool __stdcall exists () __attribute__ ((regparm (1)));
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const char *_ctty (char *);
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/* signals */
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HANDLE sendsig;
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HANDLE exec_sendsig;
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DWORD exec_dwProcessId;
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public:
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HANDLE wr_proc_pipe;
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DWORD wr_proc_pipe_owner;
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friend class pinfo;
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};
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DWORD WINAPI commune_process (void *);
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enum parent_alerter
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{
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__ALERT_REPARENT = 111, // arbitrary non-signal value
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__ALERT_ALIVE = 112
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};
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class pinfo
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{
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HANDLE h;
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_pinfo *procinfo;
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bool destroy;
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public:
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HANDLE rd_proc_pipe;
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HANDLE hProcess;
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bool waiter_ready;
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class cygthread *wait_thread;
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void init (pid_t, DWORD, HANDLE) __attribute__ ((regparm(3)));
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pinfo () {}
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pinfo (_pinfo *x): procinfo (x), hProcess (NULL) {}
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pinfo (pid_t n) : rd_proc_pipe (NULL), hProcess (NULL) {init (n, 0, NULL);}
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pinfo (pid_t n, DWORD flag) : rd_proc_pipe (NULL), hProcess (NULL), waiter_ready (0), wait_thread (NULL) {init (n, flag, NULL);}
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void thisproc (HANDLE) __attribute__ ((regparm (2)));
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void release ();
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int wait () __attribute__ ((regparm (1)));
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~pinfo ()
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{
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if (destroy && procinfo)
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release ();
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}
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void exit (DWORD n) __attribute__ ((noreturn, regparm(2)));
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void maybe_set_exit_code_from_windows () __attribute__ ((regparm(1)));
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_pinfo *operator -> () const {return procinfo;}
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int operator == (pinfo *x) const {return x->procinfo == procinfo;}
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int operator == (pinfo &x) const {return x.procinfo == procinfo;}
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int operator == (_pinfo *x) const {return x == procinfo;}
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int operator == (void *x) const {return procinfo == x;}
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int operator == (int x) const {return (int) procinfo == (int) x;}
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int operator == (char *x) const {return (char *) procinfo == x;}
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_pinfo *operator * () const {return procinfo;}
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operator _pinfo * () const {return procinfo;}
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// operator bool () const {return (int) h;}
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void preserve () { destroy = false; }
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#ifndef _SIGPROC_H
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int remember () {system_printf ("remember is not here"); return 0;}
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#else
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int remember (bool detach)
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{
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int res = proc_subproc (detach ? PROC_DETACHED_CHILD : PROC_ADDCHILD,
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(DWORD) this);
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destroy = res ? false : true;
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return res;
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}
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#endif
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HANDLE shared_handle () {return h;}
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void set_acl ();
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friend class _pinfo;
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friend class winpids;
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};
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#define ISSTATE(p, f) (!!((p)->process_state & f))
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#define NOTSTATE(p, f) (!((p)->process_state & f))
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class winpids
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{
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bool make_copy;
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DWORD npidlist;
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DWORD *pidlist;
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pinfo *pinfolist;
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DWORD pinfo_access; // access type for pinfo open
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DWORD enum_processes (bool winpid);
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DWORD enum_init (bool winpid);
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void add (DWORD& nelem, bool, DWORD pid);
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public:
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DWORD npids;
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inline void reset () { release (); npids = 0;}
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void set (bool winpid);
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winpids (): make_copy (true) {}
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winpids (int): make_copy (false), npidlist (0), pidlist (NULL),
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pinfolist (NULL), pinfo_access (0), npids (0) {}
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winpids (DWORD acc): make_copy (false), npidlist (0), pidlist (NULL),
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pinfolist (NULL), pinfo_access (acc), npids (0)
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{
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set (0);
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}
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inline DWORD& winpid (int i) const {return pidlist[i];}
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inline _pinfo *operator [] (int i) const {return (_pinfo *) pinfolist[i];}
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~winpids ();
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void release ();
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};
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extern __inline pid_t
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cygwin_pid (pid_t pid)
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{
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return pid;
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}
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void __stdcall pinfo_init (char **, int);
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extern pinfo myself;
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#define _P_VFORK 0
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#define _P_SYSTEM 512
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#define __ctty() _ctty ((char *) alloca (sizeof ("ctty /dev/tty") + 20))
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#define myctty() myself->__ctty ()
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/* For mmaps across fork(). */
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int __stdcall fixup_mmaps_after_fork (HANDLE parent);
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/* for shm areas across fork (). */
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int __stdcall fixup_shms_after_fork ();
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void __stdcall fill_rusage (struct rusage *, HANDLE);
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void __stdcall add_rusage (struct rusage *, struct rusage *);
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#endif /*_PINFO_H*/
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