* emultempl/armelf.em (elf32_arm_add_stub_section): Use

[deliverable/binutils-gdb.git] / gdb / breakpoint.h

diff --git a/gdb/breakpoint.h b/gdb/breakpoint.h
index 80544e4dedd698afc4a19cade6d5425f82851879..2c98d64e8bc6d01902ee3e949d3d2dbbfb3a8cf3 100644 (file)
--- a/gdb/breakpoint.h
+++ b/gdb/breakpoint.h
@@ -298,6 +298,17 @@ struct bp_location
 
   /* Similarly, for the breakpoint at an overlay's LMA, if necessary.  */
   struct bp_target_info overlay_target_info;
+
+  /* In a non-stop mode, it's possible that we delete a breakpoint,
+     but as we do that, some still running thread hits that breakpoint.
+     For that reason, we need to keep locations belonging to deleted
+     breakpoints for a bit, so that don't report unexpected SIGTRAP.
+     We can't keep such locations forever, so we use a heuristic --
+     after we process certain number of inferior events since
+     breakpoint was deleted, we retire all locations of that breakpoint.
+     This variable keeps a number of events still to go, when
+     it becomes 0 this location is retired.  */
+  int events_till_retirement;
 };
 
 /* This structure is a collection of function pointers that, if available,
@@ -865,4 +876,9 @@ void breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr,
 
 extern int breakpoints_always_inserted_mode (void);
 
+/* Called each time new event from target is processed.
+   Retires previously deleted breakpoint locations that
+   in our opinion won't ever trigger.  */
+extern void breakpoint_retire_moribund (void);
+
 #endif /* !defined (BREAKPOINT_H) */