1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "common_runtime_test.h"
18
19#include <cstdio>
20#include <dirent.h>
21#include <dlfcn.h>
22#include <fcntl.h>
23#include <ScopedLocalRef.h>
24#include <stdlib.h>
25
26#include "../../external/icu/icu4c/source/common/unicode/uvernum.h"
27#include "art_field-inl.h"
28#include "base/macros.h"
29#include "base/logging.h"
30#include "base/stl_util.h"
31#include "base/stringprintf.h"
32#include "base/unix_file/fd_file.h"
33#include "class_linker.h"
34#include "compiler_callbacks.h"
35#include "dex_file-inl.h"
36#include "gc_root-inl.h"
37#include "gc/heap.h"
38#include "gtest/gtest.h"
39#include "handle_scope-inl.h"
40#include "interpreter/unstarted_runtime.h"
41#include "jni_internal.h"
42#include "mirror/class-inl.h"
43#include "mirror/class_loader.h"
44#include "mem_map.h"
45#include "native/dalvik_system_DexFile.h"
46#include "noop_compiler_callbacks.h"
47#include "os.h"
48#include "primitive.h"
49#include "runtime-inl.h"
50#include "scoped_thread_state_change.h"
51#include "thread.h"
52#include "well_known_classes.h"
53
54int main(int argc, char **argv) {
55  // Gtests can be very noisy. For example, an executable with multiple tests will trigger native
56  // bridge warnings. The following line reduces the minimum log severity to ERROR and suppresses
57  // everything else. In case you want to see all messages, comment out the line.
58  setenv("ANDROID_LOG_TAGS", "*:e", 1);
59
60  art::InitLogging(argv);
61  LOG(::art::INFO) << "Running main() from common_runtime_test.cc...";
62  testing::InitGoogleTest(&argc, argv);
63  return RUN_ALL_TESTS();
64}
65
66namespace art {
67
68ScratchFile::ScratchFile() {
69  // ANDROID_DATA needs to be set
70  CHECK_NE(static_cast<char*>(nullptr), getenv("ANDROID_DATA")) <<
71      "Are you subclassing RuntimeTest?";
72  filename_ = getenv("ANDROID_DATA");
73  filename_ += "/TmpFile-XXXXXX";
74  int fd = mkstemp(&filename_[0]);
75  CHECK_NE(-1, fd) << strerror(errno) << " for " << filename_;
76  file_.reset(new File(fd, GetFilename(), true));
77}
78
79ScratchFile::ScratchFile(const ScratchFile& other, const char* suffix) {
80  filename_ = other.GetFilename();
81  filename_ += suffix;
82  int fd = open(filename_.c_str(), O_RDWR | O_CREAT, 0666);
83  CHECK_NE(-1, fd);
84  file_.reset(new File(fd, GetFilename(), true));
85}
86
87ScratchFile::ScratchFile(File* file) {
88  CHECK(file != nullptr);
89  filename_ = file->GetPath();
90  file_.reset(file);
91}
92
93ScratchFile::~ScratchFile() {
94  Unlink();
95}
96
97int ScratchFile::GetFd() const {
98  return file_->Fd();
99}
100
101void ScratchFile::Close() {
102  if (file_.get() != nullptr) {
103    if (file_->FlushCloseOrErase() != 0) {
104      PLOG(WARNING) << "Error closing scratch file.";
105    }
106  }
107}
108
109void ScratchFile::Unlink() {
110  if (!OS::FileExists(filename_.c_str())) {
111    return;
112  }
113  Close();
114  int unlink_result = unlink(filename_.c_str());
115  CHECK_EQ(0, unlink_result);
116}
117
118static bool unstarted_initialized_ = false;
119
120CommonRuntimeTestImpl::CommonRuntimeTestImpl() {}
121
122CommonRuntimeTestImpl::~CommonRuntimeTestImpl() {
123  // Ensure the dex files are cleaned up before the runtime.
124  loaded_dex_files_.clear();
125  runtime_.reset();
126}
127
128void CommonRuntimeTestImpl::SetUpAndroidRoot() {
129  if (IsHost()) {
130    // $ANDROID_ROOT is set on the device, but not necessarily on the host.
131    // But it needs to be set so that icu4c can find its locale data.
132    const char* android_root_from_env = getenv("ANDROID_ROOT");
133    if (android_root_from_env == nullptr) {
134      // Use ANDROID_HOST_OUT for ANDROID_ROOT if it is set.
135      const char* android_host_out = getenv("ANDROID_HOST_OUT");
136      if (android_host_out != nullptr) {
137        setenv("ANDROID_ROOT", android_host_out, 1);
138      } else {
139        // Build it from ANDROID_BUILD_TOP or cwd
140        std::string root;
141        const char* android_build_top = getenv("ANDROID_BUILD_TOP");
142        if (android_build_top != nullptr) {
143          root += android_build_top;
144        } else {
145          // Not set by build server, so default to current directory
146          char* cwd = getcwd(nullptr, 0);
147          setenv("ANDROID_BUILD_TOP", cwd, 1);
148          root += cwd;
149          free(cwd);
150        }
151#if defined(__linux__)
152        root += "/out/host/linux-x86";
153#elif defined(__APPLE__)
154        root += "/out/host/darwin-x86";
155#else
156#error unsupported OS
157#endif
158        setenv("ANDROID_ROOT", root.c_str(), 1);
159      }
160    }
161    setenv("LD_LIBRARY_PATH", ":", 0);  // Required by java.lang.System.<clinit>.
162
163    // Not set by build server, so default
164    if (getenv("ANDROID_HOST_OUT") == nullptr) {
165      setenv("ANDROID_HOST_OUT", getenv("ANDROID_ROOT"), 1);
166    }
167  }
168}
169
170void CommonRuntimeTestImpl::SetUpAndroidData(std::string& android_data) {
171  // On target, Cannot use /mnt/sdcard because it is mounted noexec, so use subdir of dalvik-cache
172  if (IsHost()) {
173    const char* tmpdir = getenv("TMPDIR");
174    if (tmpdir != nullptr && tmpdir[0] != 0) {
175      android_data = tmpdir;
176    } else {
177      android_data = "/tmp";
178    }
179  } else {
180    android_data = "/data/dalvik-cache";
181  }
182  android_data += "/art-data-XXXXXX";
183  if (mkdtemp(&android_data[0]) == nullptr) {
184    PLOG(FATAL) << "mkdtemp(\"" << &android_data[0] << "\") failed";
185  }
186  setenv("ANDROID_DATA", android_data.c_str(), 1);
187}
188
189void CommonRuntimeTestImpl::TearDownAndroidData(const std::string& android_data,
190                                                bool fail_on_error) {
191  if (fail_on_error) {
192    ASSERT_EQ(rmdir(android_data.c_str()), 0);
193  } else {
194    rmdir(android_data.c_str());
195  }
196}
197
198// Helper - find directory with the following format:
199// ${ANDROID_BUILD_TOP}/${subdir1}/${subdir2}-${version}/${subdir3}/bin/
200static std::string GetAndroidToolsDir(const std::string& subdir1,
201                                      const std::string& subdir2,
202                                      const std::string& subdir3) {
203  std::string root;
204  const char* android_build_top = getenv("ANDROID_BUILD_TOP");
205  if (android_build_top != nullptr) {
206    root = android_build_top;
207  } else {
208    // Not set by build server, so default to current directory
209    char* cwd = getcwd(nullptr, 0);
210    setenv("ANDROID_BUILD_TOP", cwd, 1);
211    root = cwd;
212    free(cwd);
213  }
214
215  std::string toolsdir = root + "/" + subdir1;
216  std::string founddir;
217  DIR* dir;
218  if ((dir = opendir(toolsdir.c_str())) != nullptr) {
219    float maxversion = 0;
220    struct dirent* entry;
221    while ((entry = readdir(dir)) != nullptr) {
222      std::string format = subdir2 + "-%f";
223      float version;
224      if (std::sscanf(entry->d_name, format.c_str(), &version) == 1) {
225        if (version > maxversion) {
226          maxversion = version;
227          founddir = toolsdir + "/" + entry->d_name + "/" + subdir3 + "/bin/";
228        }
229      }
230    }
231    closedir(dir);
232  }
233
234  if (founddir.empty()) {
235    ADD_FAILURE() << "Cannot find Android tools directory.";
236  }
237  return founddir;
238}
239
240std::string CommonRuntimeTestImpl::GetAndroidHostToolsDir() {
241  return GetAndroidToolsDir("prebuilts/gcc/linux-x86/host",
242                            "x86_64-linux-glibc2.15",
243                            "x86_64-linux");
244}
245
246std::string CommonRuntimeTestImpl::GetAndroidTargetToolsDir(InstructionSet isa) {
247  switch (isa) {
248    case kArm:
249    case kThumb2:
250      return GetAndroidToolsDir("prebuilts/gcc/linux-x86/arm",
251                                "arm-linux-androideabi",
252                                "arm-linux-androideabi");
253    case kArm64:
254      return GetAndroidToolsDir("prebuilts/gcc/linux-x86/aarch64",
255                                "aarch64-linux-android",
256                                "aarch64-linux-android");
257    case kX86:
258    case kX86_64:
259      return GetAndroidToolsDir("prebuilts/gcc/linux-x86/x86",
260                                "x86_64-linux-android",
261                                "x86_64-linux-android");
262    case kMips:
263    case kMips64:
264      return GetAndroidToolsDir("prebuilts/gcc/linux-x86/mips",
265                                "mips64el-linux-android",
266                                "mips64el-linux-android");
267    case kNone:
268      break;
269  }
270  ADD_FAILURE() << "Invalid isa " << isa;
271  return "";
272}
273
274std::string CommonRuntimeTestImpl::GetCoreArtLocation() {
275  return GetCoreFileLocation("art");
276}
277
278std::string CommonRuntimeTestImpl::GetCoreOatLocation() {
279  return GetCoreFileLocation("oat");
280}
281
282std::unique_ptr<const DexFile> CommonRuntimeTestImpl::LoadExpectSingleDexFile(
283    const char* location) {
284  std::vector<std::unique_ptr<const DexFile>> dex_files;
285  std::string error_msg;
286  MemMap::Init();
287  if (!DexFile::Open(location, location, &error_msg, &dex_files)) {
288    LOG(FATAL) << "Could not open .dex file '" << location << "': " << error_msg << "\n";
289    UNREACHABLE();
290  } else {
291    CHECK_EQ(1U, dex_files.size()) << "Expected only one dex file in " << location;
292    return std::move(dex_files[0]);
293  }
294}
295
296void CommonRuntimeTestImpl::SetUp() {
297  SetUpAndroidRoot();
298  SetUpAndroidData(android_data_);
299  dalvik_cache_.append(android_data_.c_str());
300  dalvik_cache_.append("/dalvik-cache");
301  int mkdir_result = mkdir(dalvik_cache_.c_str(), 0700);
302  ASSERT_EQ(mkdir_result, 0);
303
304  std::string min_heap_string(StringPrintf("-Xms%zdm", gc::Heap::kDefaultInitialSize / MB));
305  std::string max_heap_string(StringPrintf("-Xmx%zdm", gc::Heap::kDefaultMaximumSize / MB));
306
307
308  RuntimeOptions options;
309  std::string boot_class_path_string = "-Xbootclasspath";
310  for (const std::string &core_dex_file_name : GetLibCoreDexFileNames()) {
311    boot_class_path_string += ":";
312    boot_class_path_string += core_dex_file_name;
313  }
314
315  options.push_back(std::make_pair(boot_class_path_string, nullptr));
316  options.push_back(std::make_pair("-Xcheck:jni", nullptr));
317  options.push_back(std::make_pair(min_heap_string, nullptr));
318  options.push_back(std::make_pair(max_heap_string, nullptr));
319
320  callbacks_.reset(new NoopCompilerCallbacks());
321
322  SetUpRuntimeOptions(&options);
323
324  // Install compiler-callbacks if SetupRuntimeOptions hasn't deleted them.
325  if (callbacks_.get() != nullptr) {
326    options.push_back(std::make_pair("compilercallbacks", callbacks_.get()));
327  }
328
329  PreRuntimeCreate();
330  if (!Runtime::Create(options, false)) {
331    LOG(FATAL) << "Failed to create runtime";
332    return;
333  }
334  PostRuntimeCreate();
335  runtime_.reset(Runtime::Current());
336  class_linker_ = runtime_->GetClassLinker();
337  class_linker_->FixupDexCaches(runtime_->GetResolutionMethod());
338
339  // Runtime::Create acquired the mutator_lock_ that is normally given away when we
340  // Runtime::Start, give it away now and then switch to a more managable ScopedObjectAccess.
341  Thread::Current()->TransitionFromRunnableToSuspended(kNative);
342
343  // Get the boot class path from the runtime so it can be used in tests.
344  boot_class_path_ = class_linker_->GetBootClassPath();
345  ASSERT_FALSE(boot_class_path_.empty());
346  java_lang_dex_file_ = boot_class_path_[0];
347
348  FinalizeSetup();
349}
350
351void CommonRuntimeTestImpl::FinalizeSetup() {
352  // Initialize maps for unstarted runtime. This needs to be here, as running clinits needs this
353  // set up.
354  if (!unstarted_initialized_) {
355    interpreter::UnstartedRuntime::Initialize();
356    unstarted_initialized_ = true;
357  }
358
359  {
360    ScopedObjectAccess soa(Thread::Current());
361    class_linker_->RunRootClinits();
362  }
363
364  // We're back in native, take the opportunity to initialize well known classes.
365  WellKnownClasses::Init(Thread::Current()->GetJniEnv());
366
367  // Create the heap thread pool so that the GC runs in parallel for tests. Normally, the thread
368  // pool is created by the runtime.
369  runtime_->GetHeap()->CreateThreadPool();
370  runtime_->GetHeap()->VerifyHeap();  // Check for heap corruption before the test
371  // Reduce timinig-dependent flakiness in OOME behavior (eg StubTest.AllocObject).
372  runtime_->GetHeap()->SetMinIntervalHomogeneousSpaceCompactionByOom(0U);
373}
374
375void CommonRuntimeTestImpl::ClearDirectory(const char* dirpath) {
376  ASSERT_TRUE(dirpath != nullptr);
377  DIR* dir = opendir(dirpath);
378  ASSERT_TRUE(dir != nullptr);
379  dirent* e;
380  struct stat s;
381  while ((e = readdir(dir)) != nullptr) {
382    if ((strcmp(e->d_name, ".") == 0) || (strcmp(e->d_name, "..") == 0)) {
383      continue;
384    }
385    std::string filename(dirpath);
386    filename.push_back('/');
387    filename.append(e->d_name);
388    int stat_result = lstat(filename.c_str(), &s);
389    ASSERT_EQ(0, stat_result) << "unable to stat " << filename;
390    if (S_ISDIR(s.st_mode)) {
391      ClearDirectory(filename.c_str());
392      int rmdir_result = rmdir(filename.c_str());
393      ASSERT_EQ(0, rmdir_result) << filename;
394    } else {
395      int unlink_result = unlink(filename.c_str());
396      ASSERT_EQ(0, unlink_result) << filename;
397    }
398  }
399  closedir(dir);
400}
401
402void CommonRuntimeTestImpl::TearDown() {
403  const char* android_data = getenv("ANDROID_DATA");
404  ASSERT_TRUE(android_data != nullptr);
405  ClearDirectory(dalvik_cache_.c_str());
406  int rmdir_cache_result = rmdir(dalvik_cache_.c_str());
407  ASSERT_EQ(0, rmdir_cache_result);
408  TearDownAndroidData(android_data_, true);
409  dalvik_cache_.clear();
410
411  // icu4c has a fixed 10-element array "gCommonICUDataArray".
412  // If we run > 10 tests, we fill that array and u_setCommonData fails.
413  // There's a function to clear the array, but it's not public...
414  typedef void (*IcuCleanupFn)();
415  void* sym = dlsym(RTLD_DEFAULT, "u_cleanup_" U_ICU_VERSION_SHORT);
416  CHECK(sym != nullptr) << dlerror();
417  IcuCleanupFn icu_cleanup_fn = reinterpret_cast<IcuCleanupFn>(sym);
418  (*icu_cleanup_fn)();
419
420  Runtime::Current()->GetHeap()->VerifyHeap();  // Check for heap corruption after the test
421}
422
423static std::string GetDexFileName(const std::string& jar_prefix, bool host) {
424  std::string path;
425  if (host) {
426    const char* host_dir = getenv("ANDROID_HOST_OUT");
427    CHECK(host_dir != nullptr);
428    path = host_dir;
429  } else {
430    path = GetAndroidRoot();
431  }
432
433  std::string suffix = host
434      ? "-hostdex"                 // The host version.
435      : "-testdex";                // The unstripped target version.
436
437  return StringPrintf("%s/framework/%s%s.jar", path.c_str(), jar_prefix.c_str(), suffix.c_str());
438}
439
440std::vector<std::string> CommonRuntimeTestImpl::GetLibCoreDexFileNames() {
441  return std::vector<std::string>({GetDexFileName("core-oj", IsHost()),
442                                   GetDexFileName("core-libart", IsHost())});
443}
444
445std::string CommonRuntimeTestImpl::GetTestAndroidRoot() {
446  if (IsHost()) {
447    const char* host_dir = getenv("ANDROID_HOST_OUT");
448    CHECK(host_dir != nullptr);
449    return host_dir;
450  }
451  return GetAndroidRoot();
452}
453
454// Check that for target builds we have ART_TARGET_NATIVETEST_DIR set.
455#ifdef ART_TARGET
456#ifndef ART_TARGET_NATIVETEST_DIR
457#error "ART_TARGET_NATIVETEST_DIR not set."
458#endif
459// Wrap it as a string literal.
460#define ART_TARGET_NATIVETEST_DIR_STRING STRINGIFY(ART_TARGET_NATIVETEST_DIR) "/"
461#else
462#define ART_TARGET_NATIVETEST_DIR_STRING ""
463#endif
464
465std::string CommonRuntimeTestImpl::GetTestDexFileName(const char* name) {
466  CHECK(name != nullptr);
467  std::string filename;
468  if (IsHost()) {
469    filename += getenv("ANDROID_HOST_OUT");
470    filename += "/framework/";
471  } else {
472    filename += ART_TARGET_NATIVETEST_DIR_STRING;
473  }
474  filename += "art-gtest-";
475  filename += name;
476  filename += ".jar";
477  return filename;
478}
479
480std::vector<std::unique_ptr<const DexFile>> CommonRuntimeTestImpl::OpenTestDexFiles(
481    const char* name) {
482  std::string filename = GetTestDexFileName(name);
483  std::string error_msg;
484  std::vector<std::unique_ptr<const DexFile>> dex_files;
485  bool success = DexFile::Open(filename.c_str(), filename.c_str(), &error_msg, &dex_files);
486  CHECK(success) << "Failed to open '" << filename << "': " << error_msg;
487  for (auto& dex_file : dex_files) {
488    CHECK_EQ(PROT_READ, dex_file->GetPermissions());
489    CHECK(dex_file->IsReadOnly());
490  }
491  return dex_files;
492}
493
494std::unique_ptr<const DexFile> CommonRuntimeTestImpl::OpenTestDexFile(const char* name) {
495  std::vector<std::unique_ptr<const DexFile>> vector = OpenTestDexFiles(name);
496  EXPECT_EQ(1U, vector.size());
497  return std::move(vector[0]);
498}
499
500std::vector<const DexFile*> CommonRuntimeTestImpl::GetDexFiles(jobject jclass_loader) {
501  std::vector<const DexFile*> ret;
502
503  ScopedObjectAccess soa(Thread::Current());
504
505  StackHandleScope<2> hs(soa.Self());
506  Handle<mirror::ClassLoader> class_loader = hs.NewHandle(
507      soa.Decode<mirror::ClassLoader*>(jclass_loader));
508
509  DCHECK_EQ(class_loader->GetClass(),
510            soa.Decode<mirror::Class*>(WellKnownClasses::dalvik_system_PathClassLoader));
511  DCHECK_EQ(class_loader->GetParent()->GetClass(),
512            soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_BootClassLoader));
513
514  // The class loader is a PathClassLoader which inherits from BaseDexClassLoader.
515  // We need to get the DexPathList and loop through it.
516  ArtField* cookie_field = soa.DecodeField(WellKnownClasses::dalvik_system_DexFile_cookie);
517  ArtField* dex_file_field =
518      soa.DecodeField(WellKnownClasses::dalvik_system_DexPathList__Element_dexFile);
519  mirror::Object* dex_path_list =
520      soa.DecodeField(WellKnownClasses::dalvik_system_PathClassLoader_pathList)->
521      GetObject(class_loader.Get());
522  if (dex_path_list != nullptr && dex_file_field!= nullptr && cookie_field != nullptr) {
523    // DexPathList has an array dexElements of Elements[] which each contain a dex file.
524    mirror::Object* dex_elements_obj =
525        soa.DecodeField(WellKnownClasses::dalvik_system_DexPathList_dexElements)->
526        GetObject(dex_path_list);
527    // Loop through each dalvik.system.DexPathList$Element's dalvik.system.DexFile and look
528    // at the mCookie which is a DexFile vector.
529    if (dex_elements_obj != nullptr) {
530      Handle<mirror::ObjectArray<mirror::Object>> dex_elements =
531          hs.NewHandle(dex_elements_obj->AsObjectArray<mirror::Object>());
532      for (int32_t i = 0; i < dex_elements->GetLength(); ++i) {
533        mirror::Object* element = dex_elements->GetWithoutChecks(i);
534        if (element == nullptr) {
535          // Should never happen, fall back to java code to throw a NPE.
536          break;
537        }
538        mirror::Object* dex_file = dex_file_field->GetObject(element);
539        if (dex_file != nullptr) {
540          mirror::LongArray* long_array = cookie_field->GetObject(dex_file)->AsLongArray();
541          DCHECK(long_array != nullptr);
542          int32_t long_array_size = long_array->GetLength();
543          for (int32_t j = kDexFileIndexStart; j < long_array_size; ++j) {
544            const DexFile* cp_dex_file = reinterpret_cast<const DexFile*>(static_cast<uintptr_t>(
545                long_array->GetWithoutChecks(j)));
546            if (cp_dex_file == nullptr) {
547              LOG(WARNING) << "Null DexFile";
548              continue;
549            }
550            ret.push_back(cp_dex_file);
551          }
552        }
553      }
554    }
555  }
556
557  return ret;
558}
559
560const DexFile* CommonRuntimeTestImpl::GetFirstDexFile(jobject jclass_loader) {
561  std::vector<const DexFile*> tmp(GetDexFiles(jclass_loader));
562  DCHECK(!tmp.empty());
563  const DexFile* ret = tmp[0];
564  DCHECK(ret != nullptr);
565  return ret;
566}
567
568jobject CommonRuntimeTestImpl::LoadDex(const char* dex_name) {
569  std::vector<std::unique_ptr<const DexFile>> dex_files = OpenTestDexFiles(dex_name);
570  std::vector<const DexFile*> class_path;
571  CHECK_NE(0U, dex_files.size());
572  for (auto& dex_file : dex_files) {
573    class_path.push_back(dex_file.get());
574    loaded_dex_files_.push_back(std::move(dex_file));
575  }
576
577  Thread* self = Thread::Current();
578  jobject class_loader = Runtime::Current()->GetClassLinker()->CreatePathClassLoader(self,
579                                                                                     class_path);
580  self->SetClassLoaderOverride(class_loader);
581  return class_loader;
582}
583
584std::string CommonRuntimeTestImpl::GetCoreFileLocation(const char* suffix) {
585  CHECK(suffix != nullptr);
586
587  std::string location;
588  if (IsHost()) {
589    const char* host_dir = getenv("ANDROID_HOST_OUT");
590    CHECK(host_dir != nullptr);
591    location = StringPrintf("%s/framework/core.%s", host_dir, suffix);
592  } else {
593    location = StringPrintf("/data/art-test/core.%s", suffix);
594  }
595
596  return location;
597}
598
599CheckJniAbortCatcher::CheckJniAbortCatcher() : vm_(Runtime::Current()->GetJavaVM()) {
600  vm_->SetCheckJniAbortHook(Hook, &actual_);
601}
602
603CheckJniAbortCatcher::~CheckJniAbortCatcher() {
604  vm_->SetCheckJniAbortHook(nullptr, nullptr);
605  EXPECT_TRUE(actual_.empty()) << actual_;
606}
607
608void CheckJniAbortCatcher::Check(const char* expected_text) {
609  EXPECT_TRUE(actual_.find(expected_text) != std::string::npos) << "\n"
610      << "Expected to find: " << expected_text << "\n"
611      << "In the output   : " << actual_;
612  actual_.clear();
613}
614
615void CheckJniAbortCatcher::Hook(void* data, const std::string& reason) {
616  // We use += because when we're hooking the aborts like this, multiple problems can be found.
617  *reinterpret_cast<std::string*>(data) += reason;
618}
619
620}  // namespace art
621
622namespace std {
623
624template <typename T>
625std::ostream& operator<<(std::ostream& os, const std::vector<T>& rhs) {
626os << ::art::ToString(rhs);
627return os;
628}
629
630}  // namespace std
631