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- <a name="tdump"></a>
- <div class="header">
- <p>
- Next: <a href="save-tracepoints.html#save-tracepoints" accesskey="n" rel="next">save tracepoints</a>, Previous: <a href="tfind.html#tfind" accesskey="p" rel="prev">tfind</a>, Up: <a href="Analyze-Collected-Data.html#Analyze-Collected-Data" accesskey="u" rel="up">Analyze Collected Data</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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- <a name="tdump-1"></a>
- <h4 class="subsection">13.2.2 <code>tdump</code></h4>
- <a name="index-tdump"></a>
- <a name="index-dump-all-data-collected-at-tracepoint"></a>
- <a name="index-tracepoint-data_002c-display"></a>
-
- <p>This command takes no arguments. It prints all the data collected at
- the current trace snapshot.
- </p>
- <div class="smallexample">
- <pre class="smallexample">(gdb) <b>trace 444</b>
- (gdb) <b>actions</b>
- Enter actions for tracepoint #2, one per line:
- > collect $regs, $locals, $args, gdb_long_test
- > end
-
- (gdb) <b>tstart</b>
-
- (gdb) <b>tfind line 444</b>
- #0 gdb_test (p1=0x11, p2=0x22, p3=0x33, p4=0x44, p5=0x55, p6=0x66)
- at gdb_test.c:444
- 444 printp( "%s: arguments = 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X\n", )
-
- (gdb) <b>tdump</b>
- Data collected at tracepoint 2, trace frame 1:
- d0 0xc4aa0085 -995491707
- d1 0x18 24
- d2 0x80 128
- d3 0x33 51
- d4 0x71aea3d 119204413
- d5 0x22 34
- d6 0xe0 224
- d7 0x380035 3670069
- a0 0x19e24a 1696330
- a1 0x3000668 50333288
- a2 0x100 256
- a3 0x322000 3284992
- a4 0x3000698 50333336
- a5 0x1ad3cc 1758156
- fp 0x30bf3c 0x30bf3c
- sp 0x30bf34 0x30bf34
- ps 0x0 0
- pc 0x20b2c8 0x20b2c8
- fpcontrol 0x0 0
- fpstatus 0x0 0
- fpiaddr 0x0 0
- p = 0x20e5b4 "gdb-test"
- p1 = (void *) 0x11
- p2 = (void *) 0x22
- p3 = (void *) 0x33
- p4 = (void *) 0x44
- p5 = (void *) 0x55
- p6 = (void *) 0x66
- gdb_long_test = 17 '\021'
-
- (gdb)
- </pre></div>
-
- <p><code>tdump</code> works by scanning the tracepoint’s current collection
- actions and printing the value of each expression listed. So
- <code>tdump</code> can fail, if after a run, you change the tracepoint’s
- actions to mention variables that were not collected during the run.
- </p>
- <p>Also, for tracepoints with <code>while-stepping</code> loops, <code>tdump</code>
- uses the collected value of <code>$pc</code> to distinguish between trace
- frames that were collected at the tracepoint hit, and frames that were
- collected while stepping. This allows it to correctly choose whether
- to display the basic list of collections, or the collections from the
- body of the while-stepping loop. However, if <code>$pc</code> was not collected,
- then <code>tdump</code> will always attempt to dump using the basic collection
- list, and may fail if a while-stepping frame does not include all the
- same data that is collected at the tracepoint hit.
- </p>
- <hr>
- <div class="header">
- <p>
- Next: <a href="save-tracepoints.html#save-tracepoints" accesskey="n" rel="next">save tracepoints</a>, Previous: <a href="tfind.html#tfind" accesskey="p" rel="prev">tfind</a>, Up: <a href="Analyze-Collected-Data.html#Analyze-Collected-Data" accesskey="u" rel="up">Analyze Collected Data</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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