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[RFC/WIP PATCH 07/14] Expand %ITSET% in the prompt to the current I/T set.
- From: Pedro Alves <pedro at codesourcery dot com>
- To: gdb-patches at sourceware dot org
- Date: Mon, 28 Nov 2011 15:39:31 +0000
- Subject: [RFC/WIP PATCH 07/14] Expand %ITSET% in the prompt to the current I/T set.
- References: <20111128153742.17761.21459.stgit@localhost6.localdomain6>
This adds a simple hook that allows expanding "%ITSET%" in the prompt
to the current set.
Here's how I use it currently:
$ gdb -q -nx -ex "set prompt %ITSET%> " ~/gdb/tests/threads
[all]> info threads
Id Target Id Frame
3 Thread 0x7ffff7028700 (LWP 6890) "threads" 0x00007ffff7bcc78e in __lll_lock_wait_private () from /lib/x86_64-linux-gnu/libpthread.so.0
* 2 Thread 0x7ffff7829700 (LWP 6889) "threads" thread_function0 (arg=0x0) at threads.c:63
1 Thread 0x7ffff7fcb720 (LWP 6884) "threads" 0x00007ffff7910011 in clone () from /lib/x86_64-linux-gnu/libc.so.6
[all]> itfocus [1.1]
New focus: Current inferior is 1.
[1.1]>
Not sure this is the way to go, or whether we'll only support this
through python. This was simple enough to make sure I could work on
the rest of the stuff without getting lost. I'll also make use of
this in all examples in this series.
---
gdb/event-top.c | 40 +++++++++++++++++++++++++++++++++++++++-
1 files changed, 39 insertions(+), 1 deletions(-)
diff --git a/gdb/event-top.c b/gdb/event-top.c
index a276690..de040cb 100644
--- a/gdb/event-top.c
+++ b/gdb/event-top.c
@@ -23,6 +23,7 @@
#include "defs.h"
#include "top.h"
#include "inferior.h"
+#include "itset.h"
#include "target.h"
#include "terminal.h" /* for job_control */
#include "event-loop.h"
@@ -36,6 +37,7 @@
#include "observer.h"
#include "continuations.h"
#include "gdbcmd.h" /* for dont_repeat() */
+#include "gdb_obstack.h"
/* readline include files. */
#include "readline/readline.h"
@@ -215,6 +217,38 @@ change_line_handler (void)
}
}
+static char *
+expand_gdb_prompt (char *prompt)
+{
+ struct obstack obstack;
+ char *p;
+
+ obstack_init (&obstack);
+
+ p = prompt;
+ while (*p)
+ {
+ if (CONST_STRNEQ (p, "%ITSET%"))
+ {
+ obstack_grow_str (&obstack, "[");
+ if (itset_name (current_itset) != NULL)
+ obstack_grow_str (&obstack, itset_name (current_itset));
+ else
+ obstack_grow_str (&obstack, itset_spec (current_itset));
+ obstack_grow_str (&obstack, "]");
+ p += sizeof ("%ITSET%") - 1;
+ continue;
+ }
+
+ obstack_1grow (&obstack, *p);
+ p++;
+ }
+
+ obstack_1grow (&obstack, '\0');
+
+ return xstrdup (obstack_finish (&obstack));
+}
+
/* Displays the prompt. If the argument NEW_PROMPT is NULL, the
prompt that is displayed is the current top level prompt.
Otherwise, it displays whatever NEW_PROMPT is as a local/secondary
@@ -276,8 +310,12 @@ display_gdb_prompt (char *new_prompt)
}
else
{
+ char *top;
+
/* Display the top level prompt. */
- actual_gdb_prompt = top_level_prompt ();
+ top = top_level_prompt ();
+ actual_gdb_prompt = expand_gdb_prompt (top);
+ xfree (top);
}
}
else