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/* pinfo.h: process table info
Copyright 2000, 2001, 2002 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. */
#ifndef _PINFO_H
#define _PINFO_H
/* Signal constants (have to define them here, unfortunately) */
enum
{
__SIGFLUSH = -2,
__SIGSTRACE = -1,
__SIGUNUSED = 0,
__SIGOFFSET = 2
};
#define PSIZE 63
#include <sys/resource.h>
#include "thread.h"
class _pinfo
{
public:
/* Cygwin pid */
pid_t pid;
/* Various flags indicating the state of the process. See PID_
constants below. */
DWORD process_state;
/* If hProcess is set, it's because it came from a
CreateProcess call. This means it's process relative
to the thing which created the process. That's ok because
we only use this handle from the parent. */
HANDLE hProcess;
#define PINFO_REDIR_SIZE ((char *) &myself.procinfo->hProcess - (char *) myself.procinfo)
/* Handle associated with initial Windows pid which started it all. */
HANDLE pid_handle;
/* Handle to the logical parent of this pid. */
HANDLE ppid_handle;
/* Parent process id. */
pid_t ppid;
/* dwProcessId contains the processid used for sending signals. It
* will be reset in a child process when it is capable of receiving
* signals.
*/
DWORD dwProcessId;
/* Used to spawn a child for fork(), among other things. */
char progname[MAX_PATH];
/* User information.
The information is derived from the GetUserName system call,
with the name looked up in /etc/passwd and assigned a default value
if not found. This data resides in the shared data area (allowing
tasks to store whatever they want here) so it's for informational
purposes only. */
__uid32_t uid; /* User ID */
__gid32_t gid; /* Group ID */
pid_t pgid; /* Process group ID */
pid_t sid; /* Session ID */
int ctty; /* Control tty */
bool has_pgid_children;/* True if we've forked or spawned children with our GID. */
/* Resources used by process. */
long start_time;
struct rusage rusage_self;
struct rusage rusage_children;
/* Non-zero if process was stopped by a signal. */
char stopsig;
void exit (UINT n, bool norecord = 0) __attribute__ ((noreturn, regparm(2)));
inline void set_has_pgid_children ()
{
if (pgid == pid)
has_pgid_children = 1;
}
inline void set_has_pgid_children (bool val) {has_pgid_children = val;}
inline struct sigaction& getsig (int sig)
{
return thread2signal ? thread2signal->sigs[sig] : sigs[sig];
}
inline void copysigs (_pinfo *p) {memcpy (sigs, p->sigs, sizeof (sigs));}
inline sigset_t& getsigmask ()
{
return thread2signal ? *thread2signal->sigmask : sig_mask;
}
inline void setsigmask (sigset_t mask)
{
if (thread2signal)
*(thread2signal->sigmask) = mask;
sig_mask = mask;
}
inline LONG* getsigtodo (int sig) {return _sigtodo + __SIGOFFSET + sig;}
inline HANDLE getthread2signal ()
{
return thread2signal ? thread2signal->win32_obj_id : hMainThread;
}
inline void setthread2signal (void *thr) {thread2signal = (pthread *) thr;}
private:
struct sigaction sigs[NSIG];
sigset_t sig_mask; /* one set for everything to ignore. */
LONG _sigtodo[NSIG + __SIGOFFSET];
pthread *thread2signal; // NULL means means thread any other means a pthread
};
class pinfo
{
HANDLE h;
_pinfo *procinfo;
bool destroy;
public:
void init (pid_t n, DWORD create = 0, HANDLE h = NULL) __attribute__ ((regparm(3)));
pinfo () {}
pinfo (_pinfo *x): procinfo (x) {}
pinfo (pid_t n) {init (n);}
pinfo (pid_t n, int create) {init (n, create);}
void release ();
~pinfo ()
{
if (destroy && procinfo)
release ();
}
_pinfo *operator -> () const {return procinfo;}
int operator == (pinfo *x) const {return x->procinfo == procinfo;}
int operator == (pinfo &x) const {return x.procinfo == procinfo;}
int operator == (void *x) const {return procinfo == x;}
int operator == (int x) const {return (int) procinfo == (int) x;}
int operator == (char *x) const {return (char *) procinfo == x;}
_pinfo *operator * () const {return procinfo;}
operator _pinfo * () const {return procinfo;}
// operator bool () const {return (int) h;}
#ifndef _SIGPROC_H
int remember () {system_printf ("remember is not here"); return 0;}
#else
int remember ()
{
int res = proc_subproc (PROC_ADDCHILD, (DWORD) this);
destroy = res ? false : true;
return res;
}
#endif
HANDLE shared_handle () {return h;}
};
#define ISSTATE(p, f) (!!((p)->process_state & f))
#define NOTSTATE(p, f) (!((p)->process_state & f))
class winpids
{
DWORD *pidlist;
DWORD npidlist;
pinfo *pinfolist;
DWORD (winpids::* enum_processes) (bool winpid);
DWORD enum_init (bool winpid);
DWORD enumNT (bool winpid);
DWORD enum9x (bool winpid);
void add (DWORD& nelem, bool, DWORD pid);
public:
DWORD npids;
inline void reset () { npids = 0; release (); }
void init (bool winpid);
winpids (int): enum_processes (&winpids::enum_init) { reset (); }
winpids (): pidlist (NULL), npidlist (0), pinfolist (NULL),
enum_processes (&winpids::enum_init), npids (0) { init (0); }
inline DWORD& winpid (int i) const {return pidlist[i];}
inline _pinfo *operator [] (int i) const {return (_pinfo *) pinfolist[i];}
~winpids ();
void release ();
};
extern __inline pid_t
cygwin_pid (pid_t pid)
{
return (pid_t) (wincap.has_negative_pids ()) ? -(int) pid : pid;
}
void __stdcall pinfo_init (char **, int);
void __stdcall set_myself (pid_t pid, HANDLE h = NULL);
extern pinfo myself;
#define _P_VFORK 0
extern void __stdcall pinfo_fixup_after_fork ();
extern HANDLE hexec_proc;
/* For mmaps across fork(). */
int __stdcall fixup_mmaps_after_fork (HANDLE parent);
/* for shm areas across fork (). */
int __stdcall fixup_shms_after_fork ();
void __stdcall fill_rusage (struct rusage *, HANDLE);
void __stdcall add_rusage (struct rusage *, struct rusage *);
#endif /*_PINFO_H*/
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