Thread hardening part 3. Now lldb_private::Thread objects have std::weak_ptr

objects for the backlink to the lldb_private::Process. The issues we were
running into before was someone was holding onto a shared pointer to a 
lldb_private::Thread for too long, and the lldb_private::Process parent object
would get destroyed and the lldb_private::Thread had a "Process &m_process"
member which would just treat whatever memory that used to be a Process as a
valid Process. This was mostly happening for lldb_private::StackFrame objects
that had a member like "Thread &m_thread". So this completes the internal
strong/weak changes.

Documented the ExecutionContext and ExecutionContextRef classes so that our
LLDB developers can understand when and where to use ExecutionContext and 
ExecutionContextRef objects.

llvm-svn: 151009

1 files changed, 1 insertions, 1 deletions

diff --git a/lldb/source/Plugins/OperatingSystem/Darwin-Kernel/OperatingSystemDarwinKernel.cpp b/lldb/source/Plugins/OperatingSystem/Darwin-Kernel/OperatingSystemDarwinKernel.cpp
index 8294861365f..7315a825071 100644
--- a/lldb/source/Plugins/OperatingSystem/Darwin-Kernel/OperatingSystemDarwinKernel.cpp
+++ b/lldb/source/Plugins/OperatingSystem/Darwin-Kernel/OperatingSystemDarwinKernel.cpp
@@ -249,7 +249,7 @@ OperatingSystemDarwinKernel::UpdateThreadList (ThreadList &old_thread_list, Thre
 
         ThreadSP thread_sp (old_thread_list.FindThreadByID (tid, false));
         if (!thread_sp)
-            thread_sp.reset (new ThreadMemory (*m_process, tid, valobj_sp));
+            thread_sp.reset (new ThreadMemory (m_process->shared_from_this(), tid, valobj_sp));
 
         new_thread_list.AddThread(thread_sp);