зеркало из https://github.com/mozilla/gecko-dev.git
310 строки
10 KiB
C++
310 строки
10 KiB
C++
#include "Utils.h"
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#include "Types.h"
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#include <android/log.h>
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#include <pthread.h>
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#include "mozilla/Assertions.h"
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#include "GeneratedJNIWrappers.h"
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#include "nsAppShell.h"
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#ifdef MOZ_CRASHREPORTER
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#include "nsExceptionHandler.h"
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#endif
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namespace mozilla {
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namespace jni {
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namespace detail {
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#define DEFINE_PRIMITIVE_TYPE_ADAPTER(NativeType, JNIType, JNIName, ABIName) \
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\
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constexpr JNIType (JNIEnv::*TypeAdapter<NativeType>::Call) \
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(jobject, jmethodID, jvalue*) MOZ_JNICALL_ABI; \
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constexpr JNIType (JNIEnv::*TypeAdapter<NativeType>::StaticCall) \
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(jclass, jmethodID, jvalue*) MOZ_JNICALL_ABI; \
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constexpr JNIType (JNIEnv::*TypeAdapter<NativeType>::Get) \
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(jobject, jfieldID) ABIName; \
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constexpr JNIType (JNIEnv::*TypeAdapter<NativeType>::StaticGet) \
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(jclass, jfieldID) ABIName; \
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constexpr void (JNIEnv::*TypeAdapter<NativeType>::Set) \
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(jobject, jfieldID, JNIType) ABIName; \
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constexpr void (JNIEnv::*TypeAdapter<NativeType>::StaticSet) \
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(jclass, jfieldID, JNIType) ABIName; \
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constexpr void (JNIEnv::*TypeAdapter<NativeType>::GetArray) \
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(JNIType ## Array, jsize, jsize, JNIType*)
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DEFINE_PRIMITIVE_TYPE_ADAPTER(bool, jboolean, Boolean, /*nothing*/);
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DEFINE_PRIMITIVE_TYPE_ADAPTER(int8_t, jbyte, Byte, /*nothing*/);
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DEFINE_PRIMITIVE_TYPE_ADAPTER(char16_t, jchar, Char, /*nothing*/);
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DEFINE_PRIMITIVE_TYPE_ADAPTER(int16_t, jshort, Short, /*nothing*/);
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DEFINE_PRIMITIVE_TYPE_ADAPTER(int32_t, jint, Int, /*nothing*/);
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DEFINE_PRIMITIVE_TYPE_ADAPTER(int64_t, jlong, Long, /*nothing*/);
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DEFINE_PRIMITIVE_TYPE_ADAPTER(float, jfloat, Float, MOZ_JNICALL_ABI);
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DEFINE_PRIMITIVE_TYPE_ADAPTER(double, jdouble, Double, MOZ_JNICALL_ABI);
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#undef DEFINE_PRIMITIVE_TYPE_ADAPTER
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} // namespace detail
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template<> const char ObjectBase<Object, jobject>::name[] = "java/lang/Object";
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template<> const char ObjectBase<TypedObject<jstring>, jstring>::name[] = "java/lang/String";
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template<> const char ObjectBase<TypedObject<jclass>, jclass>::name[] = "java/lang/Class";
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template<> const char ObjectBase<TypedObject<jthrowable>, jthrowable>::name[] = "java/lang/Throwable";
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template<> const char ObjectBase<BoxedObject<jboolean>, jobject>::name[] = "java/lang/Boolean";
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template<> const char ObjectBase<BoxedObject<jbyte>, jobject>::name[] = "java/lang/Byte";
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template<> const char ObjectBase<BoxedObject<jchar>, jobject>::name[] = "java/lang/Character";
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template<> const char ObjectBase<BoxedObject<jshort>, jobject>::name[] = "java/lang/Short";
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template<> const char ObjectBase<BoxedObject<jint>, jobject>::name[] = "java/lang/Integer";
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template<> const char ObjectBase<BoxedObject<jlong>, jobject>::name[] = "java/lang/Long";
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template<> const char ObjectBase<BoxedObject<jfloat>, jobject>::name[] = "java/lang/Float";
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template<> const char ObjectBase<BoxedObject<jdouble>, jobject>::name[] = "java/lang/Double";
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template<> const char ObjectBase<TypedObject<jbooleanArray>, jbooleanArray>::name[] = "[Z";
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template<> const char ObjectBase<TypedObject<jbyteArray>, jbyteArray>::name[] = "[B";
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template<> const char ObjectBase<TypedObject<jcharArray>, jcharArray>::name[] = "[C";
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template<> const char ObjectBase<TypedObject<jshortArray>, jshortArray>::name[] = "[S";
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template<> const char ObjectBase<TypedObject<jintArray>, jintArray>::name[] = "[I";
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template<> const char ObjectBase<TypedObject<jlongArray>, jlongArray>::name[] = "[J";
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template<> const char ObjectBase<TypedObject<jfloatArray>, jfloatArray>::name[] = "[F";
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template<> const char ObjectBase<TypedObject<jdoubleArray>, jdoubleArray>::name[] = "[D";
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template<> const char ObjectBase<TypedObject<jobjectArray>, jobjectArray>::name[] = "[Ljava/lang/Object;";
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template<> const char ObjectBase<ByteBuffer, jobject>::name[] = "java/nio/ByteBuffer";
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JNIEnv* sGeckoThreadEnv;
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namespace {
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JavaVM* sJavaVM;
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pthread_key_t sThreadEnvKey;
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jclass sOOMErrorClass;
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jobject sClassLoader;
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jmethodID sClassLoaderLoadClass;
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bool sIsFennec;
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void UnregisterThreadEnv(void* env)
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{
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if (!env) {
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// We were never attached.
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return;
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}
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// The thread may have already been detached. In that case, it's still
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// okay to call DetachCurrentThread(); it'll simply return an error.
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// However, we must not access | env | because it may be invalid.
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MOZ_ASSERT(sJavaVM);
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sJavaVM->DetachCurrentThread();
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}
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} // namespace
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void SetGeckoThreadEnv(JNIEnv* aEnv)
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{
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MOZ_ASSERT(aEnv);
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MOZ_ASSERT(!sGeckoThreadEnv || sGeckoThreadEnv == aEnv);
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if (!sGeckoThreadEnv
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&& pthread_key_create(&sThreadEnvKey, UnregisterThreadEnv)) {
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MOZ_CRASH("Failed to initialize required TLS");
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}
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sGeckoThreadEnv = aEnv;
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MOZ_ALWAYS_TRUE(!pthread_setspecific(sThreadEnvKey, aEnv));
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MOZ_ALWAYS_TRUE(!aEnv->GetJavaVM(&sJavaVM));
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MOZ_ASSERT(sJavaVM);
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sOOMErrorClass = Class::GlobalRef(Class::LocalRef::Adopt(
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aEnv->FindClass("java/lang/OutOfMemoryError"))).Forget();
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aEnv->ExceptionClear();
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sClassLoader = Object::GlobalRef(java::GeckoThread::ClsLoader()).Forget();
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sClassLoaderLoadClass = aEnv->GetMethodID(
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Class::LocalRef::Adopt(aEnv->GetObjectClass(sClassLoader)).Get(),
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"loadClass", "(Ljava/lang/String;)Ljava/lang/Class;");
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MOZ_ASSERT(sClassLoader && sClassLoaderLoadClass);
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auto geckoAppClass = Class::LocalRef::Adopt(
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aEnv->FindClass("org/mozilla/gecko/GeckoApp"));
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aEnv->ExceptionClear();
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sIsFennec = !!geckoAppClass;
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}
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JNIEnv* GetEnvForThread()
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{
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MOZ_ASSERT(sGeckoThreadEnv);
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JNIEnv* env = static_cast<JNIEnv*>(pthread_getspecific(sThreadEnvKey));
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if (env) {
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return env;
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}
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// We don't have a saved JNIEnv, so try to get one.
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// AttachCurrentThread() does the same thing as GetEnv() when a thread is
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// already attached, so we don't have to call GetEnv() at all.
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if (!sJavaVM->AttachCurrentThread(&env, nullptr)) {
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MOZ_ASSERT(env);
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MOZ_ALWAYS_TRUE(!pthread_setspecific(sThreadEnvKey, env));
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return env;
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}
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MOZ_CRASH("Failed to get JNIEnv for thread");
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return nullptr; // unreachable
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}
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bool ThrowException(JNIEnv *aEnv, const char *aClass,
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const char *aMessage)
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{
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MOZ_ASSERT(aEnv, "Invalid thread JNI env");
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Class::LocalRef cls = Class::LocalRef::Adopt(aEnv->FindClass(aClass));
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MOZ_ASSERT(cls, "Cannot find exception class");
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return !aEnv->ThrowNew(cls.Get(), aMessage);
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}
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bool HandleUncaughtException(JNIEnv* aEnv)
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{
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MOZ_ASSERT(aEnv, "Invalid thread JNI env");
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if (!aEnv->ExceptionCheck()) {
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return false;
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}
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#ifdef MOZ_CHECK_JNI
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aEnv->ExceptionDescribe();
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#endif
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Throwable::LocalRef e =
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Throwable::LocalRef::Adopt(aEnv, aEnv->ExceptionOccurred());
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MOZ_ASSERT(e);
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aEnv->ExceptionClear();
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String::LocalRef stack = java::GeckoAppShell::GetExceptionStackTrace(e);
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if (stack && ReportException(aEnv, e.Get(), stack.Get())) {
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return true;
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}
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aEnv->ExceptionClear();
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java::GeckoAppShell::HandleUncaughtException(e);
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if (NS_WARN_IF(aEnv->ExceptionCheck())) {
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aEnv->ExceptionDescribe();
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aEnv->ExceptionClear();
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}
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return true;
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}
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bool ReportException(JNIEnv* aEnv, jthrowable aExc, jstring aStack)
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{
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bool result = true;
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#ifdef MOZ_CRASHREPORTER
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result &= NS_SUCCEEDED(CrashReporter::AnnotateCrashReport(
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NS_LITERAL_CSTRING("JavaStackTrace"),
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String::Ref::From(aStack)->ToCString()));
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#endif // MOZ_CRASHREPORTER
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if (sOOMErrorClass && aEnv->IsInstanceOf(aExc, sOOMErrorClass)) {
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NS_ABORT_OOM(0); // Unknown OOM size
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}
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return result;
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}
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namespace {
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jclass sJNIObjectClass;
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jfieldID sJNIObjectHandleField;
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bool EnsureJNIObject(JNIEnv* env, jobject instance) {
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if (!sJNIObjectClass) {
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sJNIObjectClass = Class::GlobalRef(Class::LocalRef::Adopt(GetClassRef(
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env, "org/mozilla/gecko/mozglue/JNIObject"))).Forget();
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sJNIObjectHandleField = env->GetFieldID(
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sJNIObjectClass, "mHandle", "J");
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}
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MOZ_ASSERT(env->IsInstanceOf(instance, sJNIObjectClass));
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return true;
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}
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} // namespace
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uintptr_t GetNativeHandle(JNIEnv* env, jobject instance)
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{
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if (!EnsureJNIObject(env, instance)) {
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return 0;
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}
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return static_cast<uintptr_t>(
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env->GetLongField(instance, sJNIObjectHandleField));
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}
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void SetNativeHandle(JNIEnv* env, jobject instance, uintptr_t handle)
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{
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if (!EnsureJNIObject(env, instance)) {
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return;
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}
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env->SetLongField(instance, sJNIObjectHandleField,
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static_cast<jlong>(handle));
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}
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jclass GetClassRef(JNIEnv* aEnv, const char* aClassName)
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{
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// First try the default class loader.
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auto classRef = Class::LocalRef::Adopt(aEnv, aEnv->FindClass(aClassName));
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if (!classRef && sClassLoader) {
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// If the default class loader failed but we have an app class loader, try that.
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// Clear the pending exception from failed FindClass call above.
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aEnv->ExceptionClear();
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classRef = Class::LocalRef::Adopt(aEnv, jclass(
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aEnv->CallObjectMethod(sClassLoader, sClassLoaderLoadClass,
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StringParam(aClassName, aEnv).Get())));
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}
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if (classRef) {
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return classRef.Forget();
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}
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__android_log_print(
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ANDROID_LOG_ERROR, "Gecko",
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">>> FATAL JNI ERROR! FindClass(className=\"%s\") failed. "
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"Did ProGuard optimize away something it shouldn't have?",
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aClassName);
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aEnv->ExceptionDescribe();
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MOZ_CRASH("Cannot find JNI class");
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return nullptr;
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}
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void DispatchToGeckoThread(UniquePtr<AbstractCall>&& aCall)
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{
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class AbstractCallEvent : public nsAppShell::Event
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{
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UniquePtr<AbstractCall> mCall;
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public:
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AbstractCallEvent(UniquePtr<AbstractCall>&& aCall)
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: mCall(Move(aCall))
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{}
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void Run() override
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{
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(*mCall)();
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}
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};
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nsAppShell::PostEvent(MakeUnique<AbstractCallEvent>(Move(aCall)));
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}
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bool IsFennec()
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{
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return sIsFennec;
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}
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} // jni
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} // mozilla
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