diff options
Diffstat (limited to 'trunk/src/tests/markidle_unittest.cc')
-rw-r--r-- | trunk/src/tests/markidle_unittest.cc | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/trunk/src/tests/markidle_unittest.cc b/trunk/src/tests/markidle_unittest.cc new file mode 100644 index 0000000..ac9971f --- /dev/null +++ b/trunk/src/tests/markidle_unittest.cc @@ -0,0 +1,108 @@ +// Copyright (c) 2003, 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 +// +// MallocExtension::MarkThreadIdle() testing +#include <stdio.h> + +#include "config_for_unittests.h" +#include "base/logging.h" +#include <google/malloc_extension.h> +#include "tests/testutil.h" // for RunThread() + +// Helper routine to do lots of allocations +static void TestAllocation() { + static const int kNum = 100; + void* ptr[kNum]; + for (int size = 8; size <= 65536; size*=2) { + for (int i = 0; i < kNum; i++) { + ptr[i] = malloc(size); + } + for (int i = 0; i < kNum; i++) { + free(ptr[i]); + } + } +} + +// Routine that does a bunch of MarkThreadIdle() calls in sequence +// without any intervening allocations +static void MultipleIdleCalls() { + for (int i = 0; i < 4; i++) { + MallocExtension::instance()->MarkThreadIdle(); + } +} + +// Routine that does a bunch of MarkThreadIdle() calls in sequence +// with intervening allocations +static void MultipleIdleNonIdlePhases() { + for (int i = 0; i < 4; i++) { + TestAllocation(); + MallocExtension::instance()->MarkThreadIdle(); + } +} + +// Get current thread cache usage +static size_t GetTotalThreadCacheSize() { + size_t result; + CHECK(MallocExtension::instance()->GetNumericProperty( + "tcmalloc.current_total_thread_cache_bytes", + &result)); + return result; +} + +// Check that MarkThreadIdle() actually reduces the amount +// of per-thread memory. +static void TestIdleUsage() { + const size_t original = GetTotalThreadCacheSize(); + + TestAllocation(); + const size_t post_allocation = GetTotalThreadCacheSize(); + CHECK_GT(post_allocation, original); + + MallocExtension::instance()->MarkThreadIdle(); + const size_t post_idle = GetTotalThreadCacheSize(); + CHECK_LE(post_idle, original); + + // Log after testing because logging can allocate heap memory. + VLOG(0, "Original usage: %"PRIuS"\n", original); + VLOG(0, "Post allocation: %"PRIuS"\n", post_allocation); + VLOG(0, "Post idle: %"PRIuS"\n", post_idle); +} + +int main(int argc, char** argv) { + RunThread(&TestIdleUsage); + RunThread(&TestAllocation); + RunThread(&MultipleIdleCalls); + RunThread(&MultipleIdleNonIdlePhases); + + printf("PASS\n"); + return 0; +} |