1 files changed, 80 insertions, 0 deletions
diff --git a/indra/llcommon/llcallstack.h b/indra/llcommon/llcallstack.h
new file mode 100644
index 0000000000..1f7a7689d7
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+++ b/indra/llcommon/llcallstack.h
@@ -0,0 +1,80 @@
+/** 
+ * @file llcallstack.h
+ * @brief run-time extraction of the current callstack
+ *
+ * $LicenseInfo:firstyear=2016&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2016, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include <map>
+
+class LLCallStackImpl;
+
+class LLCallStack
+{
+public:
+    LLCallStack(S32 skip_count=0, bool verbose=false);
+    std::vector<std::string> m_strings;
+    bool m_verbose;
+    bool contains(const std::string& str);
+private:
+    static LLCallStackImpl *s_impl;
+    S32 m_skipCount;
+};
+
+LL_COMMON_API std::ostream& operator<<(std::ostream& s, const LLCallStack& call_stack);
+
+class LLContextStrings
+{
+public:
+    LLContextStrings();
+    static void addContextString(const std::string& str);
+    static void removeContextString(const std::string& str);
+    static void output(std::ostream& os);
+    static LLContextStrings* getThreadLocalInstance();
+    static bool contains(const std::string& str);
+private:
+    std::map<std::string,S32> m_contextStrings;
+};
+
+class LLScopedContextString
+{
+public:
+    LLScopedContextString(const std::string& str):
+        m_str(str)
+    {
+        LLContextStrings::addContextString(m_str);
+    }
+    ~LLScopedContextString()
+    {
+        LLContextStrings::removeContextString(m_str);
+    }
+private:
+    std::string m_str;
+};
+
+// Mostly exists as a class to hook an ostream override to.
+struct LLContextStatus
+{
+    bool contains(const std::string& str);
+};
+
+LL_COMMON_API std::ostream& operator<<(std::ostream& s, const LLContextStatus& context_status);