Squashed 'third_party/gperftools/' content from commit 54505f1
Change-Id: Id02e833828732b0efe7dac722b8485279e67c5fa
git-subtree-dir: third_party/gperftools
git-subtree-split: 54505f1d50c2d1f4676f5e87090b64a117fd980e
diff --git a/src/stacktrace_generic-inl.h b/src/stacktrace_generic-inl.h
new file mode 100644
index 0000000..7d7c22d
--- /dev/null
+++ b/src/stacktrace_generic-inl.h
@@ -0,0 +1,84 @@
+// -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*-
+// 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
+//
+// Portable implementation - just use glibc
+//
+// Note: The glibc implementation may cause a call to malloc.
+// This can cause a deadlock in HeapProfiler.
+
+#ifndef BASE_STACKTRACE_GENERIC_INL_H_
+#define BASE_STACKTRACE_GENERIC_INL_H_
+// Note: this file is included into stacktrace.cc more than once.
+// Anything that should only be defined once should be here:
+
+#include <execinfo.h>
+#include <string.h>
+#include "gperftools/stacktrace.h"
+#endif // BASE_STACKTRACE_GENERIC_INL_H_
+
+// Note: this part of the file is included several times.
+// Do not put globals below.
+
+// The following 4 functions are generated from the code below:
+// GetStack{Trace,Frames}()
+// GetStack{Trace,Frames}WithContext()
+//
+// These functions take the following args:
+// void** result: the stack-trace, as an array
+// int* sizes: the size of each stack frame, as an array
+// (GetStackFrames* only)
+// int max_depth: the size of the result (and sizes) array(s)
+// int skip_count: how many stack pointers to skip before storing in result
+// void* ucp: a ucontext_t* (GetStack{Trace,Frames}WithContext only)
+static int GET_STACK_TRACE_OR_FRAMES {
+ static const int kStackLength = 64;
+ void * stack[kStackLength];
+ int size;
+
+ size = backtrace(stack, kStackLength);
+ skip_count += 2; // we want to skip the current and it's parent frame as well
+ int result_count = size - skip_count;
+ if (result_count < 0)
+ result_count = 0;
+ if (result_count > max_depth)
+ result_count = max_depth;
+ for (int i = 0; i < result_count; i++)
+ result[i] = stack[i + skip_count];
+
+#if IS_STACK_FRAMES
+ // No implementation for finding out the stack frame sizes yet.
+ memset(sizes, 0, sizeof(*sizes) * result_count);
+#endif
+
+ return result_count;
+}