POctets::malloc: throw new exception type OutOfMemoryError early on malloc failure, also throw IllegalArgumentException on size <= 0

- Add exception type 'direct_bt::OutOfMemoryError' and wire it in helper_base for C++/JNI interoperability.

- std::malloc may not return nullptr on zero size, but a valid dummy pointer usable by free.
  Hence check for malloc(0) and throw IllegalArgumentException

- also throw OutOfMemoryError on nullptr == malloc(size)

2 files changed, 8 insertions, 1 deletions

diff --git a/java/jni/helper_base.cxx b/java/jni/helper_base.cxx
index 518b28a5..344a722f 100644
--- a/java/jni/helper_base.cxx
+++ b/java/jni/helper_base.cxx
@@ -236,6 +236,10 @@ void raise_java_exception(JNIEnv *env, const std::bad_alloc &e, const char* file
     print_native_caught_exception_fwd2java(e, file, line);
     env->ThrowNew(env->FindClass("java/lang/OutOfMemoryError"), e.what());
 }
+void raise_java_exception(JNIEnv *env, const direct_bt::OutOfMemoryError &e, const char* file, int line) {
+    print_native_caught_exception_fwd2java(e, file, line);
+    env->ThrowNew(env->FindClass("java/lang/OutOfMemoryError"), e.what());
+}
 void raise_java_exception(JNIEnv *env, const direct_bt::BluetoothException &e, const char* file, int line) {
     print_native_caught_exception_fwd2java(e, file, line);
     env->ThrowNew(env->FindClass("org/tinyb/BluetoothException"), e.what());
@@ -252,7 +256,9 @@ void rethrow_and_raise_java_exception_impl(JNIEnv *env, const char* file, int li
     try {
         // std::rethrow_exception(e);
         throw; // re-throw current exception
-    } catch (const std::bad_alloc &e) { \
+    } catch (const std::bad_alloc &e) {
+        raise_java_exception(env, e, file, line);
+    } catch (const direct_bt::OutOfMemoryError &e) {
         raise_java_exception(env, e, file, line);
     } catch (const direct_bt::InternalError &e) {
         raise_java_exception(env, e, file, line);
diff --git a/java/jni/helper_base.hpp b/java/jni/helper_base.hpp
index 45372406..164f6793 100644
--- a/java/jni/helper_base.hpp
+++ b/java/jni/helper_base.hpp
@@ -252,6 +252,7 @@ void raise_java_exception(JNIEnv *env, const direct_bt::IllegalStateException &e
 void raise_java_exception(JNIEnv *env, const direct_bt::UnsupportedOperationException &e, const char* file, int line);
 void raise_java_exception(JNIEnv *env, const direct_bt::IndexOutOfBoundsException &e, const char* file, int line);
 void raise_java_exception(JNIEnv *env, const std::bad_alloc &e, const char* file, int line);
+void raise_java_exception(JNIEnv *env, const direct_bt::OutOfMemoryError &e, const char* file, int line);
 void raise_java_exception(JNIEnv *env, const direct_bt::BluetoothException &e, const char* file, int line);
 void raise_java_exception(JNIEnv *env, const tinyb::BluetoothException &e, const char* file, int line);