GTTF: Make net_unittests run successfully with parallel test launcher

net/disk_cache/stress_cache.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This is a simple application that stress-tests the crash recovery of the disk
 // cache. The main application starts a copy of itself on a loop, checking the
 // exit code of the child process. When the child dies in an unexpected way,
 // the main application quits.
 
 // The child application has two threads: one to exercise the cache in an
@@ skipping 11 matching lines @@
 //         NOTREACHED();
 //       }
 
 #include <string>
 #include <vector>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/debug_util.h"
 #include "base/file_path.h"
+#include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "base/platform_thread.h"
 #include "base/process_util.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "base/thread.h"
 #include "base/utf_string_conversions.h"
 #include "net/base/net_errors.h"
 #include "net/base/test_completion_callback.h"
 #include "net/base/io_buffer.h"
 #include "net/disk_cache/backend_impl.h"
 #include "net/disk_cache/disk_cache.h"
 #include "net/disk_cache/disk_cache_test_util.h"
 
 using base::Time;
 
 const int kError = -1;
 const int kExpectedCrash = 100;
 
+FilePath GetStressCacheFilePath() {
+  FilePath path;
+  PathService::Get(base::DIR_TEMP, &path);  // Ignore return value;
+  path = path.AppendASCII("cache_test_stress");
+  if (!file_util::PathExists(path))
+    file_util::CreateDirectory(path);
+
+  return path;
+}
+
 // Starts a new process.
 int RunSlave(int iteration) {
   FilePath exe;
   PathService::Get(base::FILE_EXE, &exe);
 
   CommandLine cmdline(exe);
   cmdline.AppendArg(base::IntToString(iteration));
 
   base::ProcessHandle handle;
   if (!base::LaunchApp(cmdline, false, false, &handle)) {
@@ skipping 22 matching lines @@
   return 0;
 }
 
 // -----------------------------------------------------------------------
 
 // This thread will loop forever, adding and removing entries from the cache.
 // iteration is the current crash cycle, so the entries on the cache are marked
 // to know which instance of the application wrote them.
 void StressTheCache(int iteration) {
   int cache_size = 0x800000;  // 8MB
-  FilePath path = GetCacheFilePath().InsertBeforeExtensionASCII("_stress");
+  FilePath path = GetStressCacheFilePath();
 
   base::Thread cache_thread("CacheThread");
   if (!cache_thread.StartWithOptions(
           base::Thread::Options(MessageLoop::TYPE_IO, 0)))
     return;
 
   TestCompletionCallback cb;
   disk_cache::Backend* cache;
   int rv = disk_cache::BackendImpl::CreateBackend(
                path, false, cache_size, net::DISK_CACHE,
@@ skipping 129 matching lines @@
   long int iteration = strtol(argv[1], &end, 0);
 
   if (!StartCrashThread()) {
     printf("failed to start thread\n");
     return kError;
   }
 
   StressTheCache(iteration);
   return 0;
 }