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[binutils-gdb] Decouple target_interrupt from all-stop/non-stop modes
- From: Pedro Alves <palves at sourceware dot org>
- To: gdb-cvs at sourceware dot org
- Date: 12 Apr 2016 16:11:15 -0000
- Subject: [binutils-gdb] Decouple target_interrupt from all-stop/non-stop modes
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e42de8c7f8e7326d284f8b53f3bd6971fbf6e7b7
commit e42de8c7f8e7326d284f8b53f3bd6971fbf6e7b7
Author: Pedro Alves <palves@redhat.com>
Date: Tue Apr 12 16:49:31 2016 +0100
Decouple target_interrupt from all-stop/non-stop modes
In non-stop mode, "interrupt" results in a "stop with no signal",
while in all-stop mode, it results in a remote interrupt request /
stop with SIGINT. This is currently implemented in both the Linux and
remote target backends. Move it to the core code instead, making
target_interrupt specifically always about "Interrupting as if with
Ctrl-C", just like it is documented.
gdb/ChangeLog:
2016-04-12 Pedro Alves <palves@redhat.com>
* infcmd.c (interrupt_target_1): Call target_stop is in non-stop
mode.
* linux-nat.c (linux_nat_interrupt): Delete.
(linux_nat_add_target): Don't install linux_nat_interrupt.
* remote.c (remote_interrupt_ns): Change return type to void.
Throw error if interrupting the target is not supported.
(remote_interrupt): Don't call the remote_stop_ns/remote_stop_as.
Diff:
---
gdb/ChangeLog | 10 ++++++++++
gdb/infcmd.c | 6 +++++-
gdb/linux-nat.c | 10 ----------
gdb/remote.c | 35 +++++++++--------------------------
4 files changed, 24 insertions(+), 37 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7f0df5f..2a05df2 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,15 @@
2016-04-12 Pedro Alves <palves@redhat.com>
+ * infcmd.c (interrupt_target_1): Call target_stop is in non-stop
+ mode.
+ * linux-nat.c (linux_nat_interrupt): Delete.
+ (linux_nat_add_target): Don't install linux_nat_interrupt.
+ * remote.c (remote_interrupt_ns): Change return type to void.
+ Throw error if interrupting the target is not supported.
+ (remote_interrupt): Don't call the remote_stop_ns/remote_stop_as.
+
+2016-04-12 Pedro Alves <palves@redhat.com>
+
* defs.h (clear_quit_flag): Remove declaration.
* extension-priv.h (struct extension_language_ops)
<clear_quit_flag>: Remove field and update comments.
diff --git a/gdb/infcmd.c b/gdb/infcmd.c
index d687116..3a0265f 100644
--- a/gdb/infcmd.c
+++ b/gdb/infcmd.c
@@ -3013,7 +3013,11 @@ interrupt_target_1 (int all_threads)
ptid = minus_one_ptid;
else
ptid = inferior_ptid;
- target_interrupt (ptid);
+
+ if (non_stop)
+ target_stop (ptid);
+ else
+ target_interrupt (ptid);
/* Tag the thread as having been explicitly requested to stop, so
other parts of gdb know not to resume this thread automatically,
diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index 0829bcb..b75153c 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -4463,15 +4463,6 @@ linux_nat_stop (struct target_ops *self, ptid_t ptid)
}
static void
-linux_nat_interrupt (struct target_ops *self, ptid_t ptid)
-{
- if (non_stop)
- iterate_over_lwps (ptid, linux_nat_stop_lwp, NULL);
- else
- linux_ops->to_interrupt (linux_ops, ptid);
-}
-
-static void
linux_nat_close (struct target_ops *self)
{
/* Unregister from the event loop. */
@@ -4672,7 +4663,6 @@ linux_nat_add_target (struct target_ops *t)
t->to_close = linux_nat_close;
t->to_stop = linux_nat_stop;
- t->to_interrupt = linux_nat_interrupt;
t->to_supports_multi_process = linux_nat_supports_multi_process;
diff --git a/gdb/remote.c b/gdb/remote.c
index 443beac..1bd2bcf 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -5813,10 +5813,10 @@ remote_interrupt_as (void)
/* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt
the remote target. It is undefined which thread of which process
- reports the interrupt. Returns true if the packet is supported by
- the server, false otherwise. */
+ reports the interrupt. Throws an error if the packet is not
+ supported by the server. */
-static int
+static void
remote_interrupt_ns (void)
{
struct remote_state *rs = get_remote_state ();
@@ -5835,12 +5835,10 @@ remote_interrupt_ns (void)
case PACKET_OK:
break;
case PACKET_UNKNOWN:
- return 0;
+ error (_("No support for interrupting the remote target."));
case PACKET_ERROR:
error (_("Interrupting target failed: %s"), rs->buf);
}
-
- return 1;
}
/* Implement the to_stop function for the remote targets. */
@@ -5866,30 +5864,15 @@ remote_stop (struct target_ops *self, ptid_t ptid)
static void
remote_interrupt (struct target_ops *self, ptid_t ptid)
{
+ struct remote_state *rs = get_remote_state ();
+
if (remote_debug)
fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n");
- if (non_stop)
- {
- /* In non-stop mode, we always stop with no signal instead. */
- remote_stop_ns (ptid);
- }
+ if (target_is_non_stop_p ())
+ remote_interrupt_ns ();
else
- {
- /* In all-stop, we emulate ^C-ing the remote target's
- terminal. */
- if (target_is_non_stop_p ())
- {
- if (!remote_interrupt_ns ())
- {
- /* No support for ^C-ing the remote target. Stop it
- (with no signal) instead. */
- remote_stop_ns (ptid);
- }
- }
- else
- remote_interrupt_as ();
- }
+ remote_interrupt_as ();
}
/* Ask the user what to do when an interrupt is received. */