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[RFA] Implement 'detach pid'.


This patch makes CLI 'detach' and MI '-target-detach' accept the PID
of the process to detach from.

Is the infcmd.c change OK?

- Volodya

From 8c0569ee17d85cf591426a0b9900d8cad0e02389 Mon Sep 17 00:00:00 2001

	* infcmd.c (_initialize_infcmd): Make 'detach' accept
	parameter.
	* mi/mi-cmds.c (mi_cmds): Make '-target-detach' pass parameter
	to 'detach'.
	* remote.c (remote_detach_1): Interpret the passed
	parameter as a pid to detach from.
---
 gdb/infcmd.c     |    2 +-
 gdb/mi/mi-cmds.c |    2 +-
 gdb/remote.c     |   13 +++++++++++--
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/gdb/infcmd.c b/gdb/infcmd.c
index b3af31f..76b48ae 100644
--- a/gdb/infcmd.c
+++ b/gdb/infcmd.c
@@ -2556,7 +2556,7 @@ to specify the program, and to load its symbol table."));
 Detach a process or file previously attached.\n\
 If a process, it is no longer traced, and it continues its execution.  If\n\
 you were debugging a file, the file is closed and gdb no longer accesses it."),
-		  &detachlist, "detach ", 0, &cmdlist);
+		  &detachlist, "detach ", 1, &cmdlist);
 
   add_com ("disconnect", class_run, disconnect_command, _("\
 Disconnect from a target.\n\
diff --git a/gdb/mi/mi-cmds.c b/gdb/mi/mi-cmds.c
index d38de35..708dcf8 100644
--- a/gdb/mi/mi-cmds.c
+++ b/gdb/mi/mi-cmds.c
@@ -121,7 +121,7 @@ struct mi_cmd mi_cmds[] =
   { "symbol-type", { NULL, 0 }, NULL },
   { "target-attach", { "attach", 1 }, NULL },
   { "target-compare-sections", { NULL, 0 }, NULL },
-  { "target-detach", { "detach", 0 }, 0 },
+  { "target-detach", { "detach", 1 }, 0 },
   { "target-disconnect", { "disconnect", 0 }, 0 },
   { "target-download", { "load", 1 }, NULL},
   { "target-exec-status", { NULL, 0 }, NULL },
diff --git a/gdb/remote.c b/gdb/remote.c
index 5cb36b8..b1adfdb 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -3261,11 +3261,20 @@ remote_open_1 (char *name, int from_tty, struct target_ops *target, int extended
 static void
 remote_detach_1 (char *args, int from_tty, int extended)
 {
-  int pid = ptid_get_pid (inferior_ptid);
+  int pid;
   struct remote_state *rs = get_remote_state ();
 
   if (args)
-    error (_("Argument given to \"detach\" when remotely debugging."));
+    {      
+      char *end = args;
+      pid = strtol (args, &end, 10);
+      if (*end != '\0')
+	error (_("Cannot parse process id '%s'"), args);
+      if (!in_inferior_list (pid))
+	error (_("Invalid process id %d"), pid);
+    }
+  else
+    pid = ptid_get_pid (inferior_ptid);
 
   if (!target_has_execution)
     error (_("No process to detach from."));
-- 
1.5.3.5


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