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Make JClass more useful and use it in ntcore JNI.

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This commit is contained in:
Peter Johnson
2016-12-14 23:16:09 -08:00
parent 378a145cf7
commit ce7611562f
2 changed files with 29 additions and 47 deletions
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8
wpiutil/include/support/jni_util.h
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@@ -32,7 +32,9 @@ namespace java {
// to potential shutdown issues with doing so.
class JClass {
public:
JClass(JNIEnv* env, const char* name) : m_cls(nullptr) {
JClass() = default;
JClass(JNIEnv* env, const char* name) {
jclass local = env->FindClass(name);
if (!local) return;
m_cls = static_cast<jclass>(env->NewGlobalRef(local));
@@ -40,7 +42,7 @@ class JClass {
}
void free(JNIEnv *env) {
env->DeleteGlobalRef(m_cls);
if (m_cls) env->DeleteGlobalRef(m_cls);
m_cls = nullptr;
}
@@ -49,7 +51,7 @@ class JClass {
operator jclass() const { return m_cls; }
private:
jclass m_cls;
jclass m_cls = nullptr;
};
// Container class for cleaning up Java local references.