Amp is the one place where we generate a per-sample vector for automation playback...

[ardour.git] / libs / pbd / pbd / stacktrace.h

diff --git a/libs/pbd/pbd/stacktrace.h b/libs/pbd/pbd/stacktrace.h
index c6da6ed79dbe69f85ceb73c268510542f449a95c..99fc9d5c574f742e400532f8fb8144928fee9b2c 100644 (file)
--- a/libs/pbd/pbd/stacktrace.h
+++ b/libs/pbd/pbd/stacktrace.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2000-2007 Paul Davis 
+    Copyright (C) 2000-2007 Paul Davis
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -20,10 +20,101 @@
 #ifndef __libpbd_stacktrace_h__
 #define __libpbd_stacktrace_h__
 
+#ifdef HAVE_WAFBUILD
+#include "libpbd-config.h"
+#endif
+
+#include <iostream>
 #include <ostream>
+#include <glibmm/threads.h>
+#include <list>
+
+#ifdef HAVE_EXECINFO
+#include <execinfo.h>
+#include <cstdlib>
+#endif
+
+#include "pbd/libpbd_visibility.h"
+
 
 namespace PBD {
-       void stacktrace (std::ostream& out, int levels = 0);
-}
+
+       LIBPBD_API void stacktrace (std::ostream& out, int levels = 0);
+       LIBPBD_API void trace_twb();
+
+template<typename T>
+class /*LIBPBD_API*/ thing_with_backtrace
+{
+  public:
+    thing_with_backtrace () {
+           trace_twb();
+#ifdef HAVE_EXECINFO
+           allocation_backtrace = new void*[50];
+           allocation_backtrace_size = backtrace (allocation_backtrace, 50);
+#else
+           allocation_backtrace_size = 0;
+#endif
+           Glib::Threads::Mutex::Lock lm (all_mutex);
+           all.push_back (this);
+    }
+
+    thing_with_backtrace (const thing_with_backtrace<T>& other) {
+           trace_twb();
+#ifdef HAVE_EXECINFO
+           allocation_backtrace = new void*[50];
+           allocation_backtrace_size = backtrace (allocation_backtrace, 50);
+#else
+           allocation_backtrace_size = 0;
+#endif
+           Glib::Threads::Mutex::Lock lm (all_mutex);
+           all.push_back (this);
+    }
+
+    ~thing_with_backtrace() {
+           if (allocation_backtrace_size) {
+                   delete [] allocation_backtrace;
+           }
+           Glib::Threads::Mutex::Lock lm (all_mutex);
+           all.remove (this);
+    }
+
+    thing_with_backtrace<T>& operator= (const thing_with_backtrace<T>& other) {
+           /* no copyable members */
+           return *this;
+    }
+
+    static void peek_a_boo (std::ostream& stream) {
+#ifdef HAVE_EXECINFO
+           typename std::list<thing_with_backtrace<T>*>::iterator x;
+           for (x = all.begin(); x != all.end(); ++x) {
+                   char **strings;
+                   size_t i;
+
+                   strings = backtrace_symbols ((*x)->allocation_backtrace, (*x)->allocation_backtrace_size);
+
+                   if (strings) {
+                           stream << "--- ALLOCATED SHARED_PTR @ " << (*x) << std::endl;
+                           for (i = 0; i < (*x)->allocation_backtrace_size && i < 50U; i++) {
+                                   stream << strings[i] << std::endl;
+                           }
+                           free (strings);
+                   }
+           }
+#else
+           stream << "execinfo not defined for this platform" << std::endl;
+#endif
+    }
+
+private:
+    void** allocation_backtrace;
+    int allocation_backtrace_size;
+    static std::list<thing_with_backtrace<T>* > all;
+    static Glib::Threads::Mutex all_mutex;
+};
+
+template<typename T> /*LIBPBD_API*/ std::list<PBD::thing_with_backtrace<T> *> PBD::thing_with_backtrace<T>::all;
+template<typename T> /*LIBPBD_API*/ Glib::Threads::Mutex PBD::thing_with_backtrace<T>::all_mutex;
+
+} // namespace PBD
 
 #endif /* __libpbd_stacktrace_h__ */