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Diffstat (limited to 'trunk/src/tests/heap-profiler_unittest.cc')
| -rw-r--r-- | trunk/src/tests/heap-profiler_unittest.cc | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/trunk/src/tests/heap-profiler_unittest.cc b/trunk/src/tests/heap-profiler_unittest.cc new file mode 100644 index 0000000..e5dedee --- /dev/null +++ b/trunk/src/tests/heap-profiler_unittest.cc @@ -0,0 +1,163 @@ +// 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: Craig Silverstein +// +// A small program that just exercises our heap profiler by allocating +// memory and letting the heap-profiler emit a profile. We don't test +// threads (TODO). By itself, this unittest tests that the heap-profiler +// doesn't crash on simple programs, but its output can be analyzed by +// another testing script to actually verify correctness. See, eg, +// heap-profiler_unittest.sh. + +#include "config_for_unittests.h" +#include <stdlib.h> +#include <stdio.h> +#include <fcntl.h> // for mkdir() +#include <sys/stat.h> // for mkdir() on freebsd and os x +#ifdef HAVE_UNISTD_H +#include <unistd.h> // for fork() +#endif +#include <sys/wait.h> // for wait() +#include <string> +#include "base/basictypes.h" +#include "base/logging.h" +#include <google/heap-profiler.h> + +using std::string; + +static const int kMaxCount = 100000; +int* g_array[kMaxCount]; // an array of int-vectors + +static ATTRIBUTE_NOINLINE void Allocate(int start, int end, int size) { + for (int i = start; i < end; ++i) { + if (i < kMaxCount) + g_array[i] = new int[size]; + } +} + +static ATTRIBUTE_NOINLINE void Allocate2(int start, int end, int size) { + for (int i = start; i < end; ++i) { + if (i < kMaxCount) + g_array[i] = new int[size]; + } +} + +static void Deallocate(int start, int end) { + for (int i = start; i < end; ++i) { + delete[] g_array[i]; + g_array[i] = 0; + } +} + +static void TestHeapProfilerStartStopIsRunning() { + // If you run this with whole-program heap-profiling on, than + // IsHeapProfilerRunning should return true. + if (!IsHeapProfilerRunning()) { + const char* tmpdir = getenv("TMPDIR"); + if (tmpdir == NULL) + tmpdir = "/tmp"; + mkdir(tmpdir, 0755); // if necessary + HeapProfilerStart((string(tmpdir) + "/start_stop").c_str()); + CHECK(IsHeapProfilerRunning()); + + Allocate(0, 40, 100); + Deallocate(0, 40); + + HeapProfilerStop(); + CHECK(!IsHeapProfilerRunning()); + } +} + +static void TestDumpHeapProfiler() { + // If you run this with whole-program heap-profiling on, than + // IsHeapProfilerRunning should return true. + if (!IsHeapProfilerRunning()) { + const char* tmpdir = getenv("TMPDIR"); + if (tmpdir == NULL) + tmpdir = "/tmp"; + mkdir(tmpdir, 0755); // if necessary + HeapProfilerStart((string(tmpdir) + "/dump").c_str()); + CHECK(IsHeapProfilerRunning()); + + Allocate(0, 40, 100); + Deallocate(0, 40); + + char* output = GetHeapProfile(); + free(output); + HeapProfilerStop(); + } +} + + +int main(int argc, char** argv) { + if (argc > 2 || (argc == 2 && argv[1][0] == '-')) { + printf("USAGE: %s [number of children to fork]\n", argv[0]); + exit(0); + } + int num_forks = 0; + if (argc == 2) { + num_forks = atoi(argv[1]); + } + + TestHeapProfilerStartStopIsRunning(); + TestDumpHeapProfiler(); + + Allocate(0, 40, 100); + Deallocate(0, 40); + + Allocate(0, 40, 100); + Allocate(0, 40, 100); + Allocate2(40, 400, 1000); + Allocate2(400, 1000, 10000); + Deallocate(0, 1000); + + Allocate(0, 100, 100000); + Deallocate(0, 10); + Deallocate(10, 20); + Deallocate(90, 100); + Deallocate(20, 90); + + while (num_forks-- > 0) { + switch (fork()) { + case -1: + printf("FORK failed!\n"); + return 1; + case 0: // child + return execl(argv[0], argv[0], NULL); // run child with no args + default: + wait(NULL); // we'll let the kids run one at a time + } + } + + printf("DONE.\n"); + + return 0; +} |