llgs: fix Ctrl-C inferior interrupt handling to do the right thing.
* Sends a SIGSTOP to the process.
* Fixes busted SIGSTOP handling. Now builds a list of non-stopped
that we wait for the PTRACE group-stop for. When the final must-stop
tid gets its group stop, we propagate the process state change.
Only the signal receiving the notification of the pending SIGSTOP
is marked with the SIGSTOP signal. All the rest, if they weren't
already stopped, are marked as stopped with signal 0.
* Fixes a few broken tests.
* Marks the Linux test I added earlier as expect-pass (no longer XFAIL).
Implements fix for http://llvm.org/bugs/show_bug.cgi?id=20908.
llvm-svn: 217647
diff --git a/lldb/source/Plugins/Process/Linux/NativeProcessLinux.h b/lldb/source/Plugins/Process/Linux/NativeProcessLinux.h
index c94a78b..a13570f 100644
--- a/lldb/source/Plugins/Process/Linux/NativeProcessLinux.h
+++ b/lldb/source/Plugins/Process/Linux/NativeProcessLinux.h
@@ -189,6 +189,11 @@
std::unordered_set<lldb::tid_t> m_wait_for_stop_tids;
lldb_private::Mutex m_wait_for_stop_tids_mutex;
+ std::unordered_set<lldb::tid_t> m_wait_for_group_stop_tids;
+ lldb::tid_t m_group_stop_signal_tid;
+ int m_group_stop_signal;
+ lldb_private::Mutex m_wait_for_group_stop_tids_mutex;
+
lldb_private::LazyBool m_supports_mem_region;
std::vector<MemoryRegionInfo> m_mem_region_cache;
lldb_private::Mutex m_mem_region_cache_mutex;
@@ -375,6 +380,17 @@
bool
SingleStep(lldb::tid_t tid, uint32_t signo);
+ /// Safely mark all existing threads as waiting for group stop.
+ /// When the final group stop comes in from the set of group stop threads,
+ /// we'll mark the current thread as signaled_thread_tid and set its stop
+ /// reason as the given signo. All other threads from group stop notification
+ /// will have thread stop reason marked as signaled with no signo.
+ void
+ SetGroupStopTids (lldb::tid_t signaled_thread_tid, int signo);
+
+ void
+ OnGroupStop (lldb::tid_t tid);
+
lldb_private::Error
Detach(lldb::tid_t tid);
};