issue-368: added missing large_heap_fragmentation_unittest.cc

git-svn-id: http://gperftools.googlecode.com/svn/trunk@216 6b5cf1ce-ec42-a296-1ba9-69fdba395a50

src/tests/large_heap_fragmentation_unittest.cc

@@ -0,0 +1,62 @@
+// -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*-
+// 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.
+
+// This is a unit test for exercising fragmentation of large (over 1
+// meg) page spans. It makes sure that allocations/releases of
+// increasing memory chunks do not blowup memory
+// usage. See also https://code.google.com/p/gperftools/issues/detail?id=368
+
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "base/logging.h"
+#include "common.h"
+#include <gperftools/malloc_extension.h>
+
+
+int main (int argc, char** argv) {
+  for (int pass = 1; pass <= 3; pass++) {
+    size_t size = 100*1024*1024;
+    while (size < 500*1024*1024) {
+      void *ptr = malloc(size);
+      free(ptr);
+      size += 20000;
+
+      size_t heap_size = static_cast<size_t>(-1);
+      MallocExtension::instance()->GetNumericProperty("generic.heap_size",
+                                                      &heap_size);
+
+
+      CHECK_LT(heap_size, 1*1024*1024*1024);
+    }
+  }
+
+  printf("PASS\n");
+  return 0;
+}