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, 2 deletions

diff --git a/lldb/source/Plugins/UnwindAssembly/x86/UnwindAssembly-x86.h b/lldb/source/Plugins/UnwindAssembly/x86/UnwindAssembly-x86.h
index f5d039141b2..ac64e2c5194 100644
--- a/lldb/source/Plugins/UnwindAssembly/x86/UnwindAssembly-x86.h
+++ b/lldb/source/Plugins/UnwindAssembly/x86/UnwindAssembly-x86.h
@@ -32,8 +32,7 @@ public:
     // thread may be NULL in which case we only use the Target (e.g. if this is called pre-process-launch).
     virtual bool
     FirstNonPrologueInsn (lldb_private::AddressRange& func, 
-                          lldb_private::Target& target, 
-                          lldb_private::Thread* thread, 
+                          const lldb_private::ExecutionContext &exe_ctx,
                           lldb_private::Address& first_non_prologue_insn);
 
     static lldb_private::UnwindAssembly *