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/tests/sampling_test.cc b/src/tests/sampling_test.cc
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--- /dev/null
+++ b/src/tests/sampling_test.cc
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+// -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*-
+// Copyright (c) 2008, 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: Craig Silverstein
+//
+// This tests ReadStackTraces and ReadGrowthStackTraces. It does this
+// by doing a bunch of allocations and then calling those functions.
+// A driver shell-script can call this, and then call pprof, and
+// verify the expected output. The output is written to
+// argv[1].heap and argv[1].growth
+
+#include "config_for_unittests.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string>
+#include "base/logging.h"
+#include <gperftools/malloc_extension.h>
+
+using std::string;
+
+extern "C" void* AllocateAllocate() ATTRIBUTE_NOINLINE;
+
+extern "C" void* AllocateAllocate() {
+ // The VLOG's are mostly to discourage inlining
+ VLOG(1, "Allocating some more");
+ void* p = malloc(10000);
+ VLOG(1, "Done allocating");
+ return p;
+}
+
+static void WriteStringToFile(const string& s, const string& filename) {
+ FILE* fp = fopen(filename.c_str(), "w");
+ fwrite(s.data(), 1, s.length(), fp);
+ fclose(fp);
+}
+
+int main(int argc, char** argv) {
+ if (argc < 2) {
+ fprintf(stderr, "USAGE: %s <base of output files>\n", argv[0]);
+ exit(1);
+ }
+ for (int i = 0; i < 8000; i++) {
+ AllocateAllocate();
+ }
+
+ string s;
+ MallocExtension::instance()->GetHeapSample(&s);
+ WriteStringToFile(s, string(argv[1]) + ".heap");
+
+ s.clear();
+ MallocExtension::instance()->GetHeapGrowthStacks(&s);
+ WriteStringToFile(s, string(argv[1]) + ".growth");
+
+ return 0;
+}