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* (winpids::add): Make sure to store always a Windows PID in 

pidlist, even if pid is a Cygwin PID.
	(winpids::enum_processes): Fetch Cygwin processes from listing of
	shared cygwin object dir in the native NT namespace.  Only if winpid
	is true, fetch Windows processes using an additional call to
	NtQuerySystemInformation.
This commit is contained in:
Corinna Vinschen 2011-08-11 07:28:42 +00:00
parent 56a85b9cea
commit 3b7cd74bfd
2 changed files with 77 additions and 25 deletions
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9
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,12 @@
2011-08-11 Corinna Vinschen <corinna@vinschen.de>
* (winpids::add): Make sure to store always a Windows PID in
pidlist, even if pid is a Cygwin PID.
(winpids::enum_processes): Fetch Cygwin processes from listing of
shared cygwin object dir in the native NT namespace. Only if winpid
is true, fetch Windows processes using an additional call to
NtQuerySystemInformation.
2011-08-10 Corinna Vinschen <corinna@vinschen.de>
* fhandler_process.cc (format_process_status): Always print process name

93
winsup/cygwin/pinfo.cc
View File

@ -1212,44 +1212,87 @@ out:
}
}
if (p || winpid)
pidlist[nelem++] = pid;
pidlist[nelem++] = !p ? pid : p->dwProcessId;
}
DWORD
winpids::enum_processes (bool winpid)
{
static DWORD szprocs;
static SYSTEM_PROCESSES *procs;
DWORD nelem = 0;
if (!szprocs)
procs = (SYSTEM_PROCESSES *) malloc (sizeof (*procs) + (szprocs = 200 * sizeof (*procs)));
NTSTATUS res;
for (;;)
DWORD cygwin_pid_nelem = 0;
NTSTATUS status;
ULONG context;
struct fdbi
{
res = NtQuerySystemInformation (SystemProcessesAndThreadsInformation,
procs, szprocs, NULL);
if (res == 0)
break;
DIRECTORY_BASIC_INFORMATION dbi;
WCHAR buf[2][NAME_MAX + 1];
} f;
HANDLE dir = get_shared_parent_dir ();
BOOLEAN restart = TRUE;
if (res == STATUS_INFO_LENGTH_MISMATCH)
procs = (SYSTEM_PROCESSES *) realloc (procs, szprocs += 200 * sizeof (*procs));
else
do
{
status = NtQueryDirectoryObject (dir, &f, sizeof f, TRUE, restart,
&context, NULL);
if (NT_SUCCESS (status))
{
system_printf ("error %p reading system process information", res);
return 0;
restart = FALSE;
f.dbi.ObjectName.Buffer[f.dbi.ObjectName.Length / sizeof (WCHAR)]
= L'\0';
if (wcsncmp (f.dbi.ObjectName.Buffer, L"cygpid.", 7) == 0)
{
DWORD pid = wcstoul (f.dbi.ObjectName.Buffer + 7, NULL, 10);
add (nelem, false, pid);
}
}
}
while (NT_SUCCESS (status));
cygwin_pid_nelem = nelem;
SYSTEM_PROCESSES *px = procs;
for (;;)
if (winpid)
{
if (px->ProcessId)
add (nelem, winpid, px->ProcessId);
if (!px->NextEntryDelta)
break;
px = (SYSTEM_PROCESSES *) ((char *) px + px->NextEntryDelta);
static DWORD szprocs;
static SYSTEM_PROCESSES *procs;
if (!szprocs)
procs = (SYSTEM_PROCESSES *) malloc (sizeof (*procs) + (szprocs = 200 * sizeof (*procs)));
NTSTATUS res;
for (;;)
{
res = NtQuerySystemInformation (SystemProcessesAndThreadsInformation,
procs, szprocs, NULL);
if (res == 0)
break;
if (res == STATUS_INFO_LENGTH_MISMATCH)
procs = (SYSTEM_PROCESSES *) realloc (procs, szprocs += 200 * sizeof (*procs));
else
{
system_printf ("error %p reading system process information", res);
return 0;
}
}
SYSTEM_PROCESSES *px = procs;
for (;;)
{
if (px->ProcessId)
{
bool do_add = true;
for (unsigned i = 0; i < cygwin_pid_nelem; ++i)
if (pidlist[i] == px->ProcessId)
{
do_add = false;
break;
}
if (do_add)
add (nelem, true, px->ProcessId);
}
if (!px->NextEntryDelta)
break;
px = (SYSTEM_PROCESSES *) ((char *) px + px->NextEntryDelta);
}
}
return nelem;