Imported existing code

libraries/i686-linux/include/google/stacktrace.h

@@ -0,0 +1,74 @@
+// Copyright (c) 2005, Google Inc.
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+// 
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// ---
+// Author: Sanjay Ghemawat
+//
+// Routine to extract the current stack trace.
+
+#ifndef _GOOGLE_STACKTRACE_H
+#define _GOOGLE_STACKTRACE_H
+
+// Annoying stuff for windows -- makes sure clients can import these functions
+#ifndef PERFTOOLS_DLL_DECL
+# ifdef WIN32
+#   define PERFTOOLS_DLL_DECL  __declspec(dllimport)
+# else
+#   define PERFTOOLS_DLL_DECL
+# endif
+#endif
+
+
+// Skips the most recent "skip_count" stack frames (also skips the
+// frame generated for the "GetStackTrace" routine itself), and then
+// records the pc values for up to the next "max_depth" frames in
+// "result".  Returns the number of values recorded in "result".
+//
+// Example:
+//      main() { foo(); }
+//      foo() { bar(); }
+//      bar() {
+//        void* result[10];
+//        int depth = GetStackTrace(result, 10, 1);
+//      }
+//
+// The GetStackTrace call will skip the frame for "bar".  It will
+// return 2 and will produce pc values that map to the following
+// procedures:
+//      result[0]       foo
+//      result[1]       main
+// (Actually, there may be a few more entries after "main" to account for
+// startup procedures.)
+//
+// This routine may return fewer stack trace entries than are
+// available.
+extern PERFTOOLS_DLL_DECL int GetStackTrace(void** result, int max_depth,
+                                            int skip_count);
+
+#endif /* _GOOGLE_STACKTRACE_H */