[PATCH v2 06/25] Always run async signal handlers in the main UI

Pedro Alves
2016-03-21T15:30:37Z

Async signal handlers have no connection to whichever was the current
UI, and thus always run on the main one.
---
gdb/event-loop.c | 4 ++++
gdb/event-top.c | 1 +
gdb/top.h | 1 +
3 files changed, 6 insertions(+)

diff --git a/gdb/event-loop.c b/gdb/event-loop.c
index 0e1cb2b..c7062eb 100644
--- a/gdb/event-loop.c
+++ b/gdb/event-loop.c
@@ -34,6 +34,7 @@
#include "gdb_sys_time.h"
#include "gdb_select.h"
#include "observer.h"
+#include "top.h"

/* Tell create_file_handler what events we are interested in.
This is used by the select version of the event loop. */
@@ -946,6 +947,9 @@ invoke_async_signal_handlers (void)
break;
any_ready = 1;
async_handler_ptr->ready = 0;
+ /* Async signal handlers have no connection to whichever was the
+ current UI, and thus always run on the main one. */
+ current_ui = main_ui;
(*async_handler_ptr->proc) (async_handler_ptr->client_data);
}

diff --git a/gdb/event-top.c b/gdb/event-top.c
index 05df8b8..b40ae93 100644
--- a/gdb/event-top.c
+++ b/gdb/event-top.c
@@ -356,6 +356,7 @@ top_level_prompt (void)

static struct ui main_ui_;

+struct ui *main_ui = &main_ui_;
struct ui *current_ui = &main_ui_;
struct ui *ui_list = &main_ui_;

diff --git a/gdb/top.h b/gdb/top.h
index 2cb0c90..ef05942 100644
--- a/gdb/top.h
+++ b/gdb/top.h
@@ -85,6 +85,7 @@ struct ui
struct ui_file *m_gdb_stdlog;
};

+extern struct ui *main_ui;
extern struct ui *current_ui;
extern struct ui *ui_list;

--
2.5.0