241 lines
6.3 KiB
C++
241 lines
6.3 KiB
C++
/* pinfo.h: process table info
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Copyright 2000, 2001, 2002 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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/* Signal constants (have to define them here, unfortunately) */
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enum
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{
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__SIGFLUSH = -2,
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__SIGSTRACE = -1,
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__SIGCOMMUNE = 0,
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__SIGOFFSET = 2
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};
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#define PSIZE 63
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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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};
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enum picom
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{
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PICOM_CMDLINE = 1
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};
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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 below. */
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DWORD process_state;
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/* If hProcess is set, it's because it came from a
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CreateProcess call. This means it's process relative
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to the thing which created the process. That's ok because
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we only use this handle from the parent. */
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HANDLE hProcess;
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#define PINFO_REDIR_SIZE ((char *) &myself.procinfo->hProcess - (char *) myself.procinfo)
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/* Handle associated with initial Windows pid which started it all. */
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HANDLE pid_handle;
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/* Handle to the logical parent of this pid. */
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HANDLE ppid_handle;
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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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*/
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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[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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/* Non-zero if process was stopped by a signal. */
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char stopsig;
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/* commune */
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pid_t hello_pid;
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HANDLE tothem;
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HANDLE fromthem;
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void exit (UINT n, bool norecord = 0) __attribute__ ((noreturn, regparm(2)));
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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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inline struct sigaction& getsig (int sig)
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{
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return thread2signal ? thread2signal->sigs[sig] : sigs[sig];
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}
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inline void copysigs (_pinfo *p) {memcpy (sigs, p->sigs, sizeof (sigs));}
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inline sigset_t& getsigmask ()
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{
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return thread2signal ? *thread2signal->sigmask : sig_mask;
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}
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inline void setsigmask (sigset_t mask)
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{
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if (thread2signal)
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*(thread2signal->sigmask) = mask;
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sig_mask = mask;
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}
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inline LONG* getsigtodo (int sig) {return _sigtodo + __SIGOFFSET + sig;}
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inline HANDLE getthread2signal ()
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{
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return thread2signal ? thread2signal->win32_obj_id : hMainThread;
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}
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inline void setthread2signal (void *thr) {thread2signal = (pthread *) thr;}
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void commune_recv ();
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commune_result commune_send (DWORD);
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bool alive ();
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char *cmdline (size_t &);
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friend void __stdcall set_myself (pid_t, HANDLE);
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private:
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struct sigaction sigs[NSIG];
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sigset_t sig_mask; /* one set for everything to ignore. */
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LONG _sigtodo[NSIG + __SIGOFFSET];
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pthread *thread2signal; // NULL means thread any other means a pthread
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CRITICAL_SECTION lock;
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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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void init (pid_t n, DWORD create = 0, HANDLE h = NULL) __attribute__ ((regparm(3)));
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pinfo () {}
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pinfo (_pinfo *x): procinfo (x) {}
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pinfo (pid_t n) {init (n);}
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pinfo (pid_t n, int create) {init (n, create);}
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void release ();
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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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_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 == (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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#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 ()
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{
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int res = proc_subproc (PROC_ADDCHILD, (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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};
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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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DWORD *pidlist;
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DWORD npidlist;
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pinfo *pinfolist;
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DWORD (winpids::* enum_processes) (bool winpid);
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DWORD enum_init (bool winpid);
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DWORD enumNT (bool winpid);
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DWORD enum9x (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 () { npids = 0; release (); }
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void init (bool winpid);
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winpids (int): enum_processes (&winpids::enum_init) { reset (); }
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winpids (): pidlist (NULL), npidlist (0), pinfolist (NULL),
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enum_processes (&winpids::enum_init), npids (0) { init (0); }
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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_t) (wincap.has_negative_pids ()) ? -(int) pid : pid;
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}
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void __stdcall pinfo_init (char **, int);
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void __stdcall set_myself (pid_t pid, HANDLE h = NULL);
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extern pinfo myself;
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#define _P_VFORK 0
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extern void __stdcall pinfo_fixup_after_fork ();
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extern HANDLE hexec_proc;
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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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