| // -*- 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://github.com/gperftools/gperftools/issues/371 |
| #include "config.h" |
| |
| #include <gperftools/malloc_extension.h> |
| #include <gperftools/tcmalloc.h> |
| |
| #include <stddef.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| |
| #include "gtest/gtest.h" |
| |
| TEST(LargeHeapFragmentationTest, Basic) { |
| // First grow heap by single large amount, to ensure that we do have |
| // a big chunk of consecutive memory. Otherwise details of |
| // sys-allocator behavior may trigger fragmentation regardless of |
| // our mitigations. |
| tc_free(tc_malloc(550 << 20)); |
| MallocExtension::instance()->ReleaseFreeMemory(); |
| |
| for (int pass = 1; pass <= 3; pass++) { |
| size_t size = 100*1024*1024; |
| while (size < 500*1024*1024) { |
| void *ptr = tc_malloc(size); |
| free(ptr); |
| size += 20000; |
| |
| size_t heap_size = static_cast<size_t>(-1); |
| ASSERT_TRUE(MallocExtension::instance()->GetNumericProperty( |
| "generic.heap_size", |
| &heap_size)); |
| |
| ASSERT_LT(heap_size, 1 << 30); |
| } |
| } |
| } |