namespace instrumentation { class Instrumentation;
} // namespace instrumentation
namespace jit { class Jit; class JitCodeCache; class JitOptions;
} // namespace jit
namespace jni { class SmallLrtAllocator;
} // namespace jni
namespace mirror { class Array; class ClassLoader; class DexCache; template<class T> class ObjectArray; template<class T> class PrimitiveArray; using ByteArray = PrimitiveArray<int8_t>; class String; class Throwable;
} // namespace mirror namespace ti { class Agent; class AgentSpec;
} // namespace ti namespace verifier { class MethodVerifier; enumclass VerifyMode : int8_t;
} // namespace verifier class ArenaPool; class AssumeValueSignature; class ArtField; class ArtMethod; enumclass CalleeSaveType: uint32_t; class ClassLinker; class CodeSimulatorContainer; class CompilerCallbacks; class Dex2oatImageTest; class DexFile; enumclass InstructionSet; class InstructionSetFeatures; class InternTable; class IsMarkedVisitor; class JavaVMExt; class LinearAlloc; class MonitorList; class MonitorPool; class NullPointerHandler; class OatFileAssistantTest; class OatFileManager; class Plugin; struct RuntimeArgumentMap; class RuntimeCallbacks; class SignalCatcher; class StackOverflowHandler; class SuspensionHandler; class ThreadList; class ThreadPool; class Trace; struct TraceConfig;
using RuntimeOptions = std::vector<std::pair<std::string, constvoid*>>;
class Runtime { public: // Parse raw runtime options.
EXPORT staticbool ParseOptions(const RuntimeOptions& raw_options, bool ignore_unrecognized,
RuntimeArgumentMap* runtime_options);
// Creates and initializes a new runtime.
EXPORT staticbool Create(RuntimeArgumentMap&& runtime_options)
SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_);
// Creates and initializes a new runtime.
EXPORT staticbool Create(const RuntimeOptions& raw_options, bool ignore_unrecognized)
SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_);
enumclass RuntimeDebugState { // This doesn't support any debug features / method tracing. This is the expected state usually.
kNonJavaDebuggable, // This supports method tracing and a restricted set of debug features (for ex: redefinition // isn't supported). We transition to this state when method tracing has started or when the // debugger was attached and transition back to NonDebuggable once the tracing has stopped / // the debugger agent has detached..
kJavaDebuggable, // The runtime was started as a debuggable runtime. This allows us to support the extended set // of debug features (for ex: redefinition). We never transition out of this state.
kJavaDebuggableAtInit
};
// IsAotCompiler for compilers that don't have a running runtime. Only dex2oat currently. bool IsAotCompiler() const { return !UseJitCompilation() && IsCompiler();
}
// IsCompiler is any runtime which has a running compiler, either dex2oat or JIT. bool IsCompiler() const { return compiler_callbacks_ != nullptr;
}
// If a compiler, are we compiling a boot image? bool IsCompilingBootImage() const;
void SetAsZygoteChild(bool is_system_server, bool is_zygote) { // System server should have been set earlier in SetAsSystemServer.
CHECK_EQ(is_system_server_, is_system_server);
is_zygote_ = is_zygote;
is_primary_zygote_ = false;
}
// Set the current runtime to be the given instance. // Note that this function is not responsible for cleaning up the old instance or taking the // ownership of the new instance. // // For test use only. staticvoid TestOnlySetCurrent(Runtime* instance) { instance_ = instance; }
// Set whichever abort message locations are appropriate to copies of the argument. Used by // Abort() and Thread::AbortInThis(). staticvoid SetAbortMessage(constchar* msg) REQUIRES(!Locks::abort_lock_);
// Aborts semi-cleanly. Used in the implementation of LOG(FATAL), which most // callers should prefer.
NO_RETURN EXPORT staticvoid Abort(constchar* msg) REQUIRES(!Locks::abort_lock_);
// Returns the "main" ThreadGroup, used when attaching user threads.
jobject GetMainThreadGroup() const;
// Returns the "system" ThreadGroup, used when attaching our internal threads.
EXPORT jobject GetSystemThreadGroup() const;
// Returns the system ClassLoader which represents the CLASSPATH.
EXPORT jobject GetSystemClassLoader() const;
// Attaches the calling native thread to the runtime.
EXPORT bool AttachCurrentThread(constchar* thread_name, bool as_daemon,
jobject thread_group, bool create_peer, bool should_run_callbacks = true);
EXPORT void CallExitHook(jint status);
// Detaches the current native thread from the runtime.
EXPORT void DetachCurrentThread(bool should_run_callbacks = true) REQUIRES(!Locks::mutator_lock_);
// If we are handling SIQQUIT return the time when we received it.
std::optional<uint64_t> SigQuitNanoTime() const;
// Dynamically adds an element to boot class path.
EXPORT void AppendToBootClassPath( const std::string& filename, const std::string& location, const std::vector<std::unique_ptr<const art::DexFile>>& dex_files);
// Same as above, but takes raw pointers.
EXPORT void AppendToBootClassPath(const std::string& filename, const std::string& location, const std::vector<const art::DexFile*>& dex_files);
// Same as above, but also takes a dex cache for each dex file.
EXPORT void AppendToBootClassPath( const std::string& filename, const std::string& location, const std::vector<std::pair<const art::DexFile*, ObjPtr<mirror::DexCache>>>&
dex_files_and_cache);
// Dynamically adds an element to boot class path and takes ownership of the dex files.
EXPORT void AddExtraBootDexFiles(const std::string& filename, const std::string& location,
std::vector<std::unique_ptr<const art::DexFile>>&& dex_files);
// Returns the checksums for the boot image, extensions and extra boot class path dex files, // based on the image spaces and boot class path dex files loaded in memory. const std::string& GetBootClassPathChecksums() const { return boot_class_path_checksums_;
}
// Is the given object the special object used to mark a cleared JNI weak global? bool IsClearedJniWeakGlobal(ObjPtr<mirror::Object> obj) REQUIRES_SHARED(Locks::mutator_lock_);
// Get the special object used to mark a cleared JNI weak global.
mirror::Object* GetClearedJniWeakGlobal() REQUIRES_SHARED(Locks::mutator_lock_);
void DisallowNewSystemWeaks() REQUIRES_SHARED(Locks::mutator_lock_); void AllowNewSystemWeaks() REQUIRES_SHARED(Locks::mutator_lock_); // broadcast_for_checkpoint is true when we broadcast for making blocking threads to respond to // checkpoint requests. It's false when we broadcast to unblock blocking threads after system weak // access is reenabled. void BroadcastForNewSystemWeaks(bool broadcast_for_checkpoint = false);
// Visit all the roots. If only_dirty is true then non-dirty roots won't be visited. If // clean_dirty is true then dirty roots will be marked as non-dirty after visiting.
EXPORT void VisitRoots(RootVisitor* visitor, VisitRootFlags flags = kVisitRootFlagAllRoots)
REQUIRES(!Locks::classlinker_classes_lock_, !Locks::trace_lock_)
REQUIRES_SHARED(Locks::mutator_lock_);
// Visit image roots, only used for hprof since the GC uses the image space mod union table // instead.
EXPORT void VisitImageRoots(RootVisitor* visitor) REQUIRES_SHARED(Locks::mutator_lock_);
// Visit all of the roots we can safely visit concurrently. void VisitConcurrentRoots(RootVisitor* visitor,
VisitRootFlags flags = kVisitRootFlagAllRoots)
REQUIRES(!Locks::classlinker_classes_lock_, !Locks::trace_lock_)
REQUIRES_SHARED(Locks::mutator_lock_);
// Visit all of the non thread roots, we can do this with mutators unpaused. void VisitNonThreadRoots(RootVisitor* visitor)
REQUIRES_SHARED(Locks::mutator_lock_);
// Sweep system weaks, the system weak is deleted if the visitor return null. Otherwise, the // system weak is updated to be the visitor's returned value.
EXPORT void SweepSystemWeaks(IsMarkedVisitor* visitor) REQUIRES_SHARED(Locks::mutator_lock_);
// Walk all reflective objects and visit their targets as well as any method/fields held by the // runtime threads that are marked as being reflective.
EXPORT void VisitReflectiveTargets(ReflectiveValueVisitor* visitor)
REQUIRES(Locks::mutator_lock_); // Helper for visiting reflective targets with lambdas for both field and method reflective // targets. template <typename FieldVis, typename MethodVis> void VisitReflectiveTargets(FieldVis&& fv, MethodVis&& mv) REQUIRES(Locks::mutator_lock_) {
FunctionReflectiveValueVisitor frvv(fv, mv);
VisitReflectiveTargets(&frvv);
}
// Returns a special method that calls into a trampoline for runtime method resolution
ArtMethod* GetResolutionMethod();
// Returns a special method that calls into a trampoline for runtime imt conflicts.
ArtMethod* GetImtConflictMethod();
ArtMethod* GetImtUnimplementedMethod();
// Returns the build fingerprint, if set. Otherwise an empty string is returned.
std::string GetFingerprint() { return fingerprint_;
}
// Called from class linker. void SetSentinel(ObjPtr<mirror::Object> sentinel) REQUIRES_SHARED(Locks::mutator_lock_); // For testing purpose only. // TODO: Remove this when this is no longer needed (b/116087961).
EXPORT GcRoot<mirror::Object> GetSentinel() REQUIRES_SHARED(Locks::mutator_lock_);
// Use a sentinel for marking entries in a table that have been cleared. // This helps diagnosing in case code tries to wrongly access such // entries. static mirror::Class* GetWeakClassSentinel() { returnreinterpret_cast<mirror::Class*>(0xebadbeef);
}
// Create a normal LinearAlloc or low 4gb version if we are 64 bit AOT compiler.
EXPORT LinearAlloc* CreateLinearAlloc(); // Setup linear-alloc allocators to stop using the current arena so that the // next allocations, which would be after zygote fork, happens in userfaultfd // visited space. void SetupLinearAllocForPostZygoteFork(Thread* self)
REQUIRES(!Locks::mutator_lock_, !Locks::classlinker_classes_lock_);
// Returns true if we currently care about long mutator pause. bool InJankPerceptibleProcessState() const { return process_state_ == kProcessStateJankPerceptible;
}
// Returns true if the process has ever been jank perceptible. bool WasEverJankPerceptible() const { return was_ever_jank_perceptible_;
}
// Returns if the code can be deoptimized asynchronously. Code may be compiled with some // optimization that makes it impossible to deoptimize.
EXPORT bool IsAsyncDeoptimizeable(ArtMethod* method, uintptr_t code) const
REQUIRES_SHARED(Locks::mutator_lock_);
// Returns a saved copy of the environment (getenv/setenv values). // Used by Fork to protect against overwriting LD_LIBRARY_PATH, etc. char** GetEnvSnapshot() const { return env_snapshot_.GetSnapshot();
}
uint32_t GetNumberOfDeoptimizations() const {
uint32_t result = 0; for (size_t i = 0; i <= static_cast<size_t>(DeoptimizationKind::kLast); ++i) {
result += deoptimization_counts_[i];
} return result;
}
// Changes the JniIdType to the given type. Only allowed if CanSetJniIdType(). All threads must be // suspended to call this function.
EXPORT void SetJniIdType(JniIdType t);
// Atomically delete the thread pool if the reference count is 0. bool DeleteThreadPool() REQUIRES(!Locks::runtime_thread_pool_lock_);
// Wait for all the thread workers to be attached. void WaitForThreadPoolWorkersToStart() REQUIRES(!Locks::runtime_thread_pool_lock_);
// Scoped usage of the runtime thread pool. Prevents the pool from being // deleted. Note that the thread pool is only for startup and gets deleted after. class ScopedThreadPoolUsage { public:
ScopedThreadPoolUsage();
~ScopedThreadPoolUsage();
// Return the thread pool.
ThreadPool* GetThreadPool() const { return thread_pool_;
}
// Reset the startup completed status so that we can call NotifyStartupCompleted again. Should // only be used for testing.
EXPORT void ResetStartupCompleted();
// Notify the runtime that application startup is considered completed. Only has effect for the // first call. Returns whether this was the first call. bool NotifyStartupCompleted();
// Notify the runtime that the application finished loading some dex/odex files. This is // called everytime we load a set of dex files in a class loader. void NotifyDexFileLoaded();
// Return true if startup is already completed.
EXPORT bool GetStartupCompleted() const;
// Requests madvise `WILLNEED` for the given file mapping range. // // Returns the actual number of bytes that were madvise'd. This is determined // not only by the provided limit, but also the map region. // This will always be `<= madvise_size_limit_bytes`. // // If provided and valid, the `optional_fd` may be used to optimize readahead behavior. // TODO(b/309384435): Update callsites to provide the appropriate FD when available. static size_t MadviseFileForRange(size_t madvise_size_limit_bytes,
size_t map_size_bytes, const uint8_t* map_begin, const uint8_t* map_end, const std::string& file_name, int optional_fd = -1);
// Whether to madvise runtime artifacts for the given dex location to optimize startup. // We try to avoid madvise for 1) background process starts, and 2) secondary dex artifacts. bool ShouldMadviseForAppStartup(constchar* dex_location);
// Return whether a boot image has a profile. This means it's an in-memory // image rather that an image loaded from disk. bool HasImageWithProfile() const;
// Trigger a flag reload from system properties or device congfigs. // // Should only be called from runtime init and zygote post fork as // we don't want to change the runtime config midway during execution. // // The caller argument should be the name of the function making this call // and will be used to enforce the appropriate names. // // See Flags::ReloadAllFlags as well. staticvoid ReloadAllFlags(const std::string& caller);
// Parses /apex/apex-info-list.xml to build a string containing apex versions of boot classpath // jars, which is encoded into .oat files. static std::string GetApexVersions(ArrayRef<const std::string> boot_class_path_locations);
// Visit all of the thread roots. void VisitThreadRoots(RootVisitor* visitor, VisitRootFlags flags)
REQUIRES_SHARED(Locks::mutator_lock_);
// Visit all other roots which must be done with mutators suspended. void VisitNonConcurrentRoots(RootVisitor* visitor, VisitRootFlags flags)
REQUIRES_SHARED(Locks::mutator_lock_);
// Constant roots are the roots which never change after the runtime is initialized, they only // need to be visited once per GC cycle. void VisitConstantRoots(RootVisitor* visitor)
REQUIRES_SHARED(Locks::mutator_lock_);
// Note: To be lock-free, GetFaultMessage temporarily replaces the lock message with null. // As such, there is a window where a call will return an empty string. In general, // only aborting code should retrieve this data (via GetFaultMessageForAbortLogging // friend).
std::string GetFaultMessage();
// Only used for testing. void SetSdkVersion(uint32_t version) { sdk_version_ = version; }
// Don't use EXPORT ("default" visibility), because quick_entrypoints_x86.o // refers to this symbol and it can't link with R_386_PC32 relocation. // A pointer to the active runtime or null.
LIBART_PROTECTED static Runtime* instance_;
static constexpr uint32_t kCalleeSaveSize = 6u;
// 64 bit so that we can share the same asm offsets for both 32 and 64 bits.
uint64_t callee_save_methods_[kCalleeSaveSize]; // Pre-allocated exceptions (see Runtime::Init).
GcRoot<mirror::Throwable> pre_allocated_OutOfMemoryError_when_throwing_exception_;
GcRoot<mirror::Throwable> pre_allocated_OutOfMemoryError_when_throwing_oome_;
GcRoot<mirror::Throwable> pre_allocated_OutOfMemoryError_when_handling_stack_overflow_;
GcRoot<mirror::Throwable> pre_allocated_NoClassDefFoundError_;
ArtMethod* resolution_method_;
ArtMethod* imt_conflict_method_; // Unresolved method has the same behavior as the conflict method, it is used by the class linker // for differentiating between unfilled imt slots vs conflict slots in superclasses.
ArtMethod* imt_unimplemented_method_;
// Special sentinel object used to invalid conditions in JNI (cleared weak references) and // JDWP (invalid references).
GcRoot<mirror::Object> sentinel_;
// The default stack size for managed threads created by the runtime.
size_t default_stack_size_;
// Finalizers running for longer than this many milliseconds abort the runtime. unsignedint finalizer_timeout_ms_;
gc::Heap* heap_;
std::unique_ptr<ArenaPool> jit_arena_pool_;
std::unique_ptr<ArenaPool> arena_pool_; // This pool is used for linear alloc if we are using userfaultfd GC, or if // low 4gb pool is required for compiler linear alloc. Otherwise, use // arena_pool_. // We need ArtFields to be in low 4gb if we are compiling using a 32 bit image // on a 64 bit compiler in case we resolve things in the image since the field // arrays are int arrays in this case.
std::unique_ptr<ArenaPool> linear_alloc_arena_pool_;
// Shared linear alloc for now.
std::unique_ptr<LinearAlloc> linear_alloc_;
// Linear alloc used for allocations during startup. Will be deleted after // startup. Atomic because the pointer can be concurrently updated to null.
std::atomic<LinearAlloc*> startup_linear_alloc_;
// The number of spins that are done before thread suspension is used to forcibly inflate.
size_t max_spins_before_thin_lock_inflation_;
MonitorList* monitor_list_;
MonitorPool* monitor_pool_;
// Runtime thread pool. The pool is only for startup and gets deleted after.
std::unique_ptr<ThreadPool> thread_pool_ GUARDED_BY(Locks::runtime_thread_pool_lock_);
size_t thread_pool_ref_count_ GUARDED_BY(Locks::runtime_thread_pool_lock_);
// Fault message, printed when we get a SIGSEGV. Stored as a native-heap object and accessed // lock-free, so needs to be atomic.
std::atomic<std::string*> fault_message_;
// A non-zero value indicates that a thread has been created but not yet initialized. Guarded by // the shutdown lock so that threads aren't born while we're shutting down.
size_t threads_being_born_ GUARDED_BY(Locks::runtime_shutdown_lock_);
// Waited upon until no threads are being born.
std::unique_ptr<ConditionVariable> shutdown_cond_ GUARDED_BY(Locks::runtime_shutdown_lock_);
// Set when runtime shutdown is past the point that new threads may attach. Usually // GUARDED_BY(Locks::runtime_shutdown_lock_). But we need to check it in Abort without the // lock, because we may already own it.
std::atomic<bool> shutting_down_;
// The runtime is starting to shutdown but is blocked waiting on shutdown_cond_. bool shutting_down_started_ GUARDED_BY(Locks::runtime_shutdown_lock_);
bool started_;
// New flag added which tells us if the runtime has finished starting. If // this flag is set then the Daemon threads are created and the class loader // is created. This flag is needed for knowing if its safe to request CMS. bool finished_starting_;
// Hooks supported by JNI_CreateJavaVM
jint (*vfprintf_)(FILE* stream, constchar* format, va_list ap); void (*exit_)(jint status); void (*abort_)();
// As returned by ClassLoader.getSystemClassLoader().
jobject system_class_loader_;
// If true, then we dump the GC cumulative timings on shutdown. bool dump_gc_performance_on_shutdown_;
// Transactions are handled by the `AotClassLinker` but we keep a simple flag // in the `Runtime` for quick transaction checks. // Code that's not AOT-specific but needs some transaction-specific behavior // shall check this flag and, for an active transaction, make virtual calls // through `ClassLinker` to `AotClassLinker` to implement that behavior. bool active_transaction_;
// If kNone, verification is disabled. kEnable by default.
verifier::VerifyMode verify_;
// List of supported cpu abis.
std::vector<std::string> cpu_abilist_;
// Specifies target SDK version to allow workarounds for certain API levels.
uint32_t target_sdk_version_;
// SDK version of the running OS. // Field's value is equal to `ro.build.version.sdk` system property if it stores a valid integer // or 0 (`SdkVersion::kUnset`) otherwise. // // Note that this value does not take into account pre-release SDK codenames. To take into account // pre-release SDK codenames, also check `ro.build.version.codename`. // // For making compile-time decisions, DO NOT rely on this value because it may not be correct in // the Pre-reboot Dexopt case. Instead, use `AssumeValueOptions::SdkInt`-related properties as // provided by `CompilerOptions`.
uint32_t sdk_version_;
// ART counterpart for the compat framework (go/compat-framework).
CompatFramework compat_framework_;
// Implicit checks flags. bool implicit_null_checks_; // NullPointer checks are implicit. bool implicit_so_checks_; // StackOverflow checks are implicit. bool implicit_suspend_checks_; // Thread suspension checks are implicit.
// Whether or not the sig chain (and implicitly the fault handler) should be // disabled. Tools like dex2oat don't need them. This enables // building a statically link version of dex2oat. bool no_sig_chain_;
// Force the use of native bridge even if the app ISA matches the runtime ISA. bool force_native_bridge_;
// Whether or not a native bridge has been loaded. // // The native bridge allows running native code compiled for a foreign ISA. The way it works is, // if standard dlopen fails to load native library associated with native activity, it calls to // the native bridge to load it and then gets the trampoline for the entry to native activity. // // The option 'native_bridge_library_filename' specifies the name of the native bridge. // When non-empty the native bridge will be loaded from the given file. An empty value means // that there's no native bridge. bool is_native_bridge_loaded_;
// Whether we are running under native debugger. bool is_native_debuggable_;
// whether or not any async exceptions have ever been thrown. This is used to speed up the // MterpShouldSwitchInterpreters function. bool async_exceptions_thrown_;
// Whether anything is going to be using the shadow-frame APIs to force a function to return // early. Doing this requires that (1) we be debuggable and (2) that mterp is exited. bool non_standard_exits_enabled_;
// Whether Java code needs to be debuggable.
RuntimeDebugState runtime_debug_state_;
// Whether or not this application can be profiled by the shell user, // even when running on a device that is running in user mode. bool is_profileable_from_shell_ = false;
// Whether or not this application can be profiled by system services on a // device running in user mode, but not necessarily by the shell user. bool is_profileable_ = false;
// The maximum number of failed boots we allow before pruning the dalvik cache // and trying again. This option is only inspected when we're running as a // zygote.
uint32_t zygote_max_failed_boots_;
// Enable experimental opcodes that aren't fully specified yet. The intent is to // eventually publish them as public-usable opcodes, but they aren't ready yet. // // Experimental opcodes should not be used by other production code.
ExperimentalFlags experimental_flags_;
// Contains the build fingerprint, if given as a parameter.
std::string fingerprint_;
// Oat file manager, keeps track of what oat files are open.
OatFileManager* oat_file_manager_;
// Whether or not we are on a low RAM device. bool is_low_memory_mode_;
// Limiting size (in bytes) for applying MADV_WILLNEED on vdex files // or uncompressed dex files in APKs. // A 0 for this will turn off madvising to MADV_WILLNEED
size_t madvise_willneed_total_dex_size_;
// Limiting size (in bytes) for applying MADV_WILLNEED on odex files // A 0 for this will turn off madvising to MADV_WILLNEED
size_t madvise_willneed_odex_filesize_;
// Limiting size (in bytes) for applying MADV_WILLNEED on art files // A 0 for this will turn off madvising to MADV_WILLNEED
size_t madvise_willneed_art_filesize_;
// Whether the application should run in safe mode, that is, interpreter only. bool safe_mode_;
// Whether access checks on hidden API should be performed.
hiddenapi::EnforcementPolicy hidden_api_policy_;
// Whether access checks on core platform API should be performed.
hiddenapi::EnforcementPolicy core_platform_api_policy_;
// Whether access checks on test API should be performed.
hiddenapi::EnforcementPolicy test_api_policy_;
// List of signature prefixes of methods that have been removed from the blocklist, and treated // as if SDK.
std::vector<std::string> hidden_api_exemptions_;
// Do not warn about the same hidden API access violation twice. // This is only used for testing. bool dedupe_hidden_api_warnings_;
// How often to log hidden API access to the event log. An integer between 0 // (never) and 0x10000 (always).
uint32_t hidden_api_access_event_log_rate_;
// The package of the app running in this process.
std::string process_package_name_;
// The data directory of the app running in this process.
std::string process_data_directory_;
// Whether threads should dump their native stack on SIGQUIT. bool dump_native_stack_on_sig_quit_;
// Whether or not we currently care about pause times.
ProcessState process_state_;
// Whether zygote code is in a section that should not start threads. bool zygote_no_threads_;
// The string containing requested jdwp options
std::string jdwp_options_;
// The jdwp provider we were configured with.
JdwpProvider jdwp_provider_;
// True if jmethodID and jfieldID are opaque Indices. When false (the default) these are simply // pointers. This is set by -Xopaque-jni-ids:{true,false}.
JniIdType jni_ids_indirection_;
// Set to false in cases where we want to directly control when jni-id // indirection is changed. This is intended only for testing JNI id swapping. bool automatically_set_jni_ids_indirection_;
// True if files in /data/misc/apexdata/com.android.art are considered untrustworthy. bool deny_art_apex_data_files_;
// Whether to allow compiling the boot classpath in memory when the given boot image is unusable. bool allow_in_memory_compilation_ = false;
// Apex timestamps of boot classpath jars concatenated in a string, one timestamp per jar, in the // same order as the boot classpath. Each entry is a slash (`/`) followed by the mtime of the // owning apex, in seconds, stringified without leading zeros, indicating the apex install time. // - If an apex contributes multiple jars to the boot classpath, the apex timestamp is repeated. // - If an apex is in the factory version, we only encode a slash (`/`) (like the third and fourth // entries in the example below). // - If a jar is not owned by an apex, we don't encode it at all (not even a slash). // // The format is of the type: // '/apex_timestamp_1/apex_timestamp_2//'
std::string apex_versions_;
// The info about the application code paths.
AppInfo app_info_;
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