gdb/doc

	* gdbint.texinfo (Testsuite): Document test transcripts.
gdb/testsuite
	* lib/gdb.exp: Handle TRANSCRIPT.
	(remote_spawn, remote_close, send_gdb): New procs.

4 files changed, 76 insertions, 0 deletions

diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index ff5bff6..1455a1e 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,7 @@
+2009-07-09  Tom Tromey  <tromey@redhat.com>
+
+	* gdbint.texinfo (Testsuite): Document test transcripts.
+
 2009-07-10  Phil Muldoon  <pmuldoon@redhat.com>
 
 	* gdb.texinfo (Values From Inferior): Add length parameter
diff --git a/gdb/doc/gdbint.texinfo b/gdb/doc/gdbint.texinfo
index a51f077..3351a15 100644
--- a/gdb/doc/gdbint.texinfo
+++ b/gdb/doc/gdbint.texinfo
@@ -7560,6 +7560,27 @@ will give a result of ``UNRESOLVED'', like this:
 UNRESOLVED: gdb.base/example.exp: This test script does not work on a remote host.
 @end smallexample
 
+Sometimes it is convenient to get a transcript of the commands which
+the testsuite sends to @value{GDBN}.  For example, if @value{GDBN}
+crashes during testing, a transcript can be used to more easily
+reconstruct the failure when running @value{GDBN} under @value{GDBN}.
+
+You can instruct the @value{GDBN} testsuite to write transcripts by
+setting the DejaGNU variable @code{TRANSCRIPT} (to any value)
+before invoking @code{runtest} or @kbd{make check}.  The transcripts
+will be written into DejaGNU's output directory.  One transcript will
+be made for each invocation of @value{GDBN}; they will be named
+@file{transcript.@var{n}}, where @var{n} is an integer.  The first
+line of the transcript file will show how @value{GDBN} was invoked;
+each subsequent line is a command sent as input to @value{GDBN}.
+
+@smallexample
+make check RUNTESTFLAGS=TRANSCRIPT=y
+@end smallexample
+
+Note that the transcript is not always complete.  In particular, tests
+of completion can yield partial command lines.
+
 @section Testsuite Organization
 
 @cindex test suite organization
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index d1ac5a4..ff692ca 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2009-07-09  Tom Tromey  <tromey@redhat.com>
+
+	* lib/gdb.exp: Handle TRANSCRIPT.
+	(remote_spawn, remote_close, send_gdb): New procs.
+
 2009-07-10 Phil Muldoon  <pmuldoon@redhat.com>
 
 	* gdb.python/python-prettyprint.c: Add counted null string
diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index 200ab35..96f7d02 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -2983,3 +2983,49 @@ proc get_sizeof { type default } {
     return [get_integer_valueof "sizeof (${type})" $default]
 }
 
+# Log gdb command line and script if requested.
+if {[info exists TRANSCRIPT]} {
+  rename send_gdb real_send_gdb
+  rename remote_spawn real_remote_spawn
+  rename remote_close real_remote_close
+
+  global gdb_transcript
+  set gdb_transcript ""
+
+  global gdb_trans_count
+  set gdb_trans_count 1
+
+  proc remote_spawn {args} {
+    global gdb_transcript gdb_trans_count outdir
+
+    if {$gdb_transcript != ""} {
+      close $gdb_transcript
+    }
+    set gdb_transcript [open [file join $outdir transcript.$gdb_trans_count] w]
+    puts $gdb_transcript [lindex $args 1]
+    incr gdb_trans_count
+
+    return [uplevel real_remote_spawn $args]
+  }
+
+  proc remote_close {args} {
+    global gdb_transcript
+
+    if {$gdb_transcript != ""} {
+      close $gdb_transcript
+      set gdb_transcript ""
+    }
+
+    return [uplevel real_remote_close $args]
+  }
+
+  proc send_gdb {args} {
+    global gdb_transcript
+
+    if {$gdb_transcript != ""} {
+      puts -nonewline $gdb_transcript [lindex $args 0]
+    }
+
+    return [uplevel real_send_gdb $args]
+  }
+}