324 lines
10 KiB
HTML
324 lines
10 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
<meta name="Copyright" content="Copyright (c) 2006 by IBM Corporation">
|
|
<title>Qp0zDump()--Dump Formatted Storage Trace Data</title>
|
|
<!-- Begin Header Records ========================================== -->
|
|
<!-- All rights reserved. Licensed Materials Property of IBM -->
|
|
<!-- US Government Users Restricted Rights -->
|
|
<!-- Use, duplication or disclosure restricted by -->
|
|
<!-- GSA ADP Schedule Contract with IBM Corp. -->
|
|
<!-- Change History: -->
|
|
<!-- YYMMDD USERID Change description -->
|
|
<!-- Direct1 SCRIPT J converted by B2H R4.1 (346) (CMS) by V2KEA304 -->
|
|
<!-- at RCHVMW2 on 17 Feb 1999 at 11:05:09 -->
|
|
<!-- Edited by Kersten Feb 02 -->
|
|
<!-- This file has undergone html cleanup May 2002 by JET -->
|
|
<!-- End Header Records -->
|
|
<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
|
|
</head>
|
|
<body>
|
|
<!-- Java sync-link -->
|
|
<script type="text/javascript" language="Javascript" src="../rzahg/synch.js">
|
|
</script>
|
|
|
|
<a name="Top_Of_Page"></a>
|
|
|
|
<h2>Qp0zDump()--Dump Formatted Storage Trace Data</h2>
|
|
|
|
<div class="box" style="width: 60%;">
|
|
<br>
|
|
Syntax<br>
|
|
<pre>
|
|
#include <qp0ztrc.h>
|
|
|
|
void Qp0zDump(const char <em>*label</em>,
|
|
void <em>*area</em>,
|
|
int <em>len</em>);
|
|
</pre>
|
|
|
|
<br>
|
|
Service Program Name: QP0ZCPA<br>
|
|
<!-- iddvc RMBR -->
|
|
<br>
|
|
Default Public Authority: *USE<br>
|
|
<!-- iddvc RMBR -->
|
|
<br>
|
|
Threadsafe: Yes<br>
|
|
<!-- iddvc RMBR -->
|
|
<br>
|
|
</div>
|
|
|
|
<p>The <strong>Qp0zDump()</strong> function dumps the user storage specified by
|
|
<em>area</em> to the user trace. The user-provided storage is formatted for
|
|
viewing in hexadecimal representation for up to <em>len</em> number of bytes.
|
|
The formatted storage is labeled with the text string specified by <em>
|
|
label</em>.</p>
|
|
|
|
<p>If any input parameters are not valid, or an incorrect or error condition is
|
|
detected, the <strong>Qp0zDump()</strong> function returns immediately and no
|
|
error is indicated.</p>
|
|
|
|
<p>An application should not use the tracing function in performance critical
|
|
code. These functions are intended for debugging exception or error conditions.
|
|
The user trace is a permanent user space object named <em>
|
|
QP0Z<jobnumber></em> in the QUSRSYS library. The user trace is created
|
|
the first time any thread in a job writes trace output. See the Change User
|
|
Trace (CHGUSRTRC), Dump User Trace (DMPUSRTRC) and Delete User Trace
|
|
(DLTUSRTRC) CL commands for information about manipulating the user trace
|
|
properties and objects.</p>
|
|
|
|
<br>
|
|
<h3>Parameters</h3>
|
|
|
|
<dl>
|
|
<dt><strong>label</strong></dt>
|
|
|
|
<dd>(Input) A pointer to a string that is used to label the storage dump.<br>
|
|
<br>
|
|
</dd>
|
|
|
|
<dt><strong>area</strong></dt>
|
|
|
|
<dd>(Input) A pointer to storage area that is to be formatted and dumped to the
|
|
user trace.<br>
|
|
<br>
|
|
</dd>
|
|
|
|
<dt><strong>len</strong></dt>
|
|
|
|
<dd>(Input) The number of bytes of storage to be formatted in the user
|
|
trace.</dd>
|
|
</dl>
|
|
|
|
<br>
|
|
<h3>Authorities</h3>
|
|
|
|
<p>None.</p>
|
|
|
|
<br>
|
|
<h3>Return Value</h3>
|
|
|
|
<p>None.</p>
|
|
|
|
<br>
|
|
<h3>Error Conditions</h3>
|
|
|
|
<p>If <strong>Qp0zDump()</strong> is not successful, the function returns
|
|
immediately and no error is indicated.</p>
|
|
|
|
<br>
|
|
<h3>Usage Notes</h3>
|
|
|
|
<ol>
|
|
<li>No locks are held on the user trace between calls to the tracing functions.
|
|
The user trace can be deleted while in use. The next function that produces
|
|
trace output will create the user trace again.<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li>If another job on the system has the same job number as an existing user
|
|
trace, the existing trace data is cleared, and the trace data from the new job
|
|
replaces it.<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li>As the format of the user trace records can change, only the following CL
|
|
commands can be used to manipulate the user trace properties and objects:<br>
|
|
<br>
|
|
<ul>
|
|
<li>Change User Trace (CHGUSRTRC) can be used to change the characteristics of
|
|
the user trace.<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li>Dump User Trace (DMPUSRTRC) can be used to dump trace records to a file or
|
|
to standard output.<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li>Delete User Trace (DLTUSRTRC) can be used to delete the user trace
|
|
objects.</li>
|
|
</ul>
|
|
</li>
|
|
</ol>
|
|
|
|
<br>
|
|
<h3>Related Information</h3>
|
|
|
|
<ul>
|
|
<li><a href="p0zdmps.htm">Qp0zDumpStack()</a>--Dump Formatted Stack Trace
|
|
Data<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li><a href="p0zdmpt.htm">Qp0zDumpTargetStack()</a>--Dump Formatted Stack Trace
|
|
Data of the Target Thread<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li><a href="p0zlog.htm">Qp0zLprintf()</a>--Print Formatted Job Log Data<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li><a href="p0zprnt.htm">Qp0zUprintf()</a>--Print Formatted User Trace
|
|
Data</li>
|
|
</ul>
|
|
|
|
<br>
|
|
<h3>Example</h3>
|
|
|
|
<p>See <a href="../apiref/aboutapis.htm#codedisclaimer">Code disclaimer information</a>
|
|
for information pertaining to code examples.</p>
|
|
|
|
<p>The following example uses <strong>Qp0zDump()</strong> and <strong>
|
|
Qp0zUprintf()</strong> functions to produce trace output.</p>
|
|
|
|
<pre>
|
|
#define _MULTI_THREADED
|
|
#include <pthread.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <qp0ztrc.h>
|
|
|
|
#define THREADDATAMAX 128
|
|
|
|
void *theThread(void *parm)
|
|
{
|
|
char *myData = parm;
|
|
|
|
printf("Entered the %s thread\n", myData);
|
|
Qp0zUprintf("Tracing in the %s thread\n", myData);
|
|
Qp0zDump("The Data", myData, THREADDATAMAX);
|
|
free(myData);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
pthread_t thread, thread2;
|
|
int rc=0;
|
|
char *threadData;
|
|
|
|
|
|
printf("Enter Testcase - %s\n", argv[0]);
|
|
Qp0zUprintf("Tracing Testcase Entry\n");
|
|
|
|
printf("Create two threads\n");
|
|
Qp0zUprintf("Tracing creation of two threads\n");
|
|
|
|
threadData = (char *)malloc(THREADDATAMAX);
|
|
memset(threadData, 'Z', THREADDATAMAX);
|
|
sprintf(threadData, "50%% Cotton, 50%% Polyester");
|
|
rc = pthread_create(&thread, NULL, theThread, threadData);
|
|
if (rc) {
|
|
printf("Failed to create a %s thread\n", threadData);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
threadData = (char *)malloc(THREADDATAMAX);
|
|
memset(threadData, 'Q', THREADDATAMAX);
|
|
sprintf(threadData, "Lacquered Camel Hair");
|
|
rc = pthread_create(&thread2, NULL, theThread, threadData);
|
|
if (rc) {
|
|
printf("Failed to create a %s thread\n", threadData);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
printf("Wait for threads to complete\n");
|
|
rc = pthread_join(thread, NULL);
|
|
if (rc) { printf("Failed pthread_join() 1\n"); exit(EXIT_FAILURE); }
|
|
|
|
rc = pthread_join(thread2, NULL);
|
|
if (rc) { printf("Failed pthread_join() 2\n"); exit(EXIT_FAILURE); }
|
|
|
|
printf("Testcase complete\n");
|
|
Qp0zUprintf("Tracing completion of the testcase rc=%d\n", rc);
|
|
return 0;
|
|
}
|
|
</pre>
|
|
|
|
<br>
|
|
<h3>Trace Output:</h3>
|
|
|
|
<p>This trace output was generated after the test case was run by using the CL
|
|
command <strong>DMPUSRTRC JOB(100464/USER/TPZDUMP0) OUTPUT(*STDOUT)</strong>.
|
|
The above example program ran as job 100464/USER/TPZDUMP0.</p>
|
|
|
|
<p>Note the following in the trace output:</p>
|
|
|
|
<ol>
|
|
<li>Each trace record is indented by several spaces to aid in readability.
|
|
Trace records from different threads have different indentation levels.<br>
|
|
<br>
|
|
</li>
|
|
|
|
<li>Each trace record is identified by the hexadecimal thread ID, a colon, and
|
|
a timestamp. The timestamp can be used to aid in debugging of waiting or
|
|
looping threads. For example, the third trace record shown below (the Tracing
|
|
Testcase Entry trace point) was created by thread 0x13, and occurred 0.870960
|
|
seconds after the last full date and time label. This means that the trace
|
|
record was created on 5 January 1998 at 14:08:28.870960. A full date and time
|
|
label is placed between those trace points that occur during different whole
|
|
seconds.</li>
|
|
</ol>
|
|
|
|
<br>
|
|
|
|
|
|
<table border width="100%">
|
|
<tr>
|
|
<td><br>
|
|
<pre>
|
|
User Trace Dump for job 100464/USER/TPZDUMP0. Size: 300K, Wrapped 0
|
|
times. --- 01/05/1998 14:08:28 ---
|
|
00000013:870960 Tracing Testcase Entry
|
|
00000013:871720 Tracing creation of two threads
|
|
00000014:879904 Tracing in the 50% Cotton, 50% Polyester thread
|
|
00000014:880256 C66E80F4DF:001F60 L:0080 The Data
|
|
00000014:880968 C66E80F4DF:001F60 F5F06C40 C396A3A3 96956B40 F5F06C40 *50% Cotton, 50% *
|
|
00000014:881680 C66E80F4DF:001F70 D79693A8 85A2A385 9900E9E9 E9E9E9E9 *Polyester.ZZZZZZ*
|
|
00000014:882392 C66E80F4DF:001F80 E9E9E9E9 E9E9E9E9 E9E9E9E9 E9E9E9E9 *ZZZZZZZZZZZZZZZZ*
|
|
00000014:883096 C66E80F4DF:001F90 E9E9E9E9 E9E9E9E9 E9E9E9E9 E9E9E9E9 *ZZZZZZZZZZZZZZZZ*
|
|
00000014:883808 C66E80F4DF:001FA0 E9E9E9E9 E9E9E9E9 E9E9E9E9 E9E9E9E9 *ZZZZZZZZZZZZZZZZ*
|
|
00000014:884512 C66E80F4DF:001FB0 E9E9E9E9 E9E9E9E9 E9E9E9E9 E9E9E9E9 *ZZZZZZZZZZZZZZZZ*
|
|
00000014:885224 C66E80F4DF:001FC0 E9E9E9E9 E9E9E9E9 E9E9E9E9 E9E9E9E9 *ZZZZZZZZZZZZZZZZ*
|
|
00000015:887872 Tracing in the Lacquered Camel Hair thread
|
|
00000015:888216 C66E80F4DF:002000 L:0080 The Data
|
|
00000015:888952 C66E80F4DF:002000 D3818398 A4859985 8440C381 94859340 *Lacquered Camel *
|
|
00000015:889680 C66E80F4DF:002010 C8818999 00D8D8D8 D8D8D8D8 D8D8D8D8 *Hair.QQQQQQQQQQQ*
|
|
00000015:890416 C66E80F4DF:002020 D8D8D8D8 D8D8D8D8 D8D8D8D8 D8D8D8D8 *QQQQQQQQQQQQQQQQ*
|
|
00000015:891152 C66E80F4DF:002030 D8D8D8D8 D8D8D8D8 D8D8D8D8 D8D8D8D8 *QQQQQQQQQQQQQQQQ*
|
|
00000015:891888 C66E80F4DF:002040 D8D8D8D8 D8D8D8D8 D8D8D8D8 D8D8D8D8 *QQQQQQQQQQQQQQQQ*
|
|
00000015:892624 C66E80F4DF:002050 D8D8D8D8 D8D8D8D8 D8D8D8D8 D8D8D8D8 *QQQQQQQQQQQQQQQQ*
|
|
00000015:893352 C66E80F4DF:002060 D8D8D8D8 D8D8D8D8 D8D8D8D8 D8D8D8D8 *QQQQQQQQQQQQQQQQ*
|
|
00000015:894088 C66E80F4DF:002070 D8D8D8D8 D8D8D8D8 D8D8D8D8 D8D8D8D8 *QQQQQQQQQQQQQQQQ*
|
|
00000014:896168 C66E80F4DF:001FD0 E9E9E9E9 E9E9E9E9 E9E9E9E9 E9E9E9E9 *ZZZZZZZZZZZZZZZZ*
|
|
00000013:898832 Tracing completion of the testcase rc=0
|
|
Press ENTER to end terminal session.
|
|
|
|
</pre>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<br>
|
|
<hr>
|
|
API introduced: V4R3
|
|
|
|
<hr>
|
|
<center>
|
|
<table cellpadding="2" cellspacing="2">
|
|
<tr align="center">
|
|
<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
|
|
"unix.htm">UNIX-Type APIs</a> | <a href="aplist.htm">APIs by category</a></td>
|
|
</tr>
|
|
</table>
|
|
</center>
|
|
</body>
|
|
</html>
|
|
|