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Move from dependency on JNI and Implement AtomicMutex

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This commit is the start of moving towards a lockless and faster kernel which can run multiple independent threads with fast userspace synchronization.
This commit is contained in:
◱ PixelyIon
2019-12-26 23:40:29 +05:30
committed by ◱ PixelyIon
parent 3e9bfaec0e
commit 48d47a2b25
9 changed files with 128 additions and 35 deletions
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26
app/src/main/cpp/skyline/jvm.cpp
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@ -1,7 +1,27 @@
#include "jvm.h"
thread_local JNIEnv *env;
namespace skyline {
JvmManager::JvmManager(JNIEnv *env, jobject instance) : env(env), instance(instance), instanceClass(env->GetObjectClass(instance)) {}
JvmManager::JvmManager(JNIEnv *environ, jobject instance) : instance(instance), instanceClass(reinterpret_cast<jclass>(environ->NewGlobalRef(environ->GetObjectClass(instance)))) {
env = environ;
if(env->GetJavaVM(&vm) < 0)
throw exception("Cannot get JavaVM from environment");
}
void JvmManager::AttachThread() {
if(!env)
vm->AttachCurrentThread(&env, nullptr);
}
void JvmManager::DetachThread() {
if(env)
vm->DetachCurrentThread();
}
JNIEnv* JvmManager::GetEnv() {
return env;
}
jobject JvmManager::GetField(const char *key, const char *signature) {
return env->GetObjectField(instance, env->GetFieldID(instanceClass, key, signature));
@ -10,4 +30,8 @@ namespace skyline {
bool JvmManager::CheckNull(const char *key, const char *signature) {
return env->IsSameObject(env->GetObjectField(instance, env->GetFieldID(instanceClass, key, signature)), nullptr);
}
bool JvmManager::CheckNull(jobject& object) {
return env->IsSameObject(object, nullptr);
}
}