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added tgid support plus miscellaneous cleanup

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ps
   . added tgid support
   . made process/task naming consistent
 top
   . added tgid support
   . standardized pid related width logic
 documents
   . added tgid to ps & top man documents
 library
   . fixed OOMEM_ENABLE readtask bug
   . corrected header typo for tgid
This commit is contained in:
Craig Small
2011-08-17 21:01:35 +10:00
parent bb4f08ba29
commit 0e6ac0db3e
7 changed files with 108 additions and 56 deletions
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@@ -555,9 +555,11 @@ member of a process group, called the process group leader.
17.\fB PID \*(Em Process Id \fR
The task's unique process ID, which periodically wraps, though never
restarting at zero.
In kernel terms, it is a dispatchable entity defined by a 'task_struct'.
This value may also be used as: a process group ID (\*(Xa PGRP);
a session ID for the session leader (\*(Xa SID);
a thread group ID for the thread group leader (\*(Xa TGID);
and a TTY process group ID for the process group leader (\*(Xa TPGID).
.TP 4
@@ -649,7 +651,13 @@ The\fI saved\fR user name.
The non-resident portion of a task's address space.
.TP 4
31.\fB TIME \*(Em \*(PU Time \fR
31.\fB TGID \*(Em Thread Group Id \fR
The ID of the thread group to which a task belongs.
It is the PID of the thread group leader.
In kernel terms, it represents those tasks that share an 'mm_struct'.
.TP 4
32.\fB TIME \*(Em \*(PU Time \fR
Total \*(PU time the task has used since it started.
When 'Cumulative mode' is \*O, each process is listed with the \*(Pu
time that it and its dead children have used.
@@ -657,19 +665,19 @@ You toggle 'Cumulative mode' with 'S', which is both a \*(CO and an \*(CI.
\*(XC 'S' \*(CI for additional information regarding this mode.
.TP 4
32.\fB TIME+ \*(Em \*(PU Time, hundredths \fR
33.\fB TIME+ \*(Em \*(PU Time, hundredths \fR
The same as 'TIME', but reflecting more granularity through hundredths
of a second.
.TP 4
33.\fB TPGID \*(Em Tty Process Group Id \fR
34.\fB TPGID \*(Em Tty Process Group Id \fR
The process group ID of the foreground process for the connected tty,
or -1 if a process is not connected to a terminal.
By convention, this value equals the process ID (\*(Xa PID) of the
the process group leader (\*(Xa PGRP).
.TP 4
34.\fB TTY \*(Em Controlling Tty \fR
35.\fB TTY \*(Em Controlling Tty \fR
The name of the controlling terminal.
This is usually the device (serial port, pty, etc.) from which the
process was started, and which it uses for input or output.
@@ -677,21 +685,21 @@ However, a task need not be associated with a terminal, in which case
you'll see '?' displayed.
.TP 4
35.\fB UID \*(Em User Id \fR
36.\fB UID \*(Em User Id \fR
The\fI effective\fR user ID of the task's owner.
.TP 4
36.\fB USER \*(Em User Name \fR
37.\fB USER \*(Em User Name \fR
The\fI effective\fR user name of the task's owner.
.TP 4
37.\fB VIRT \*(Em Virtual Memory Size (kb) \fR
38.\fB VIRT \*(Em Virtual Memory Size (kb) \fR
The total amount of \*(MV used by the task.
It includes all code, data and shared libraries plus pages that have been
swapped out and pages that have been mapped but not used.
.TP 4
38.\fB WCHAN \*(Em Sleeping in Function \fR
39.\fB WCHAN \*(Em Sleeping in Function \fR
Depending on the availability of the kernel link map ('System.map'), this
field will show the name or the address of the kernel function in which the
task is currently sleeping.