Adding codebase for the Objective-C++ part of the Mac OS X launcher/wrapper.

launchers/macosx/obj-cpp/JavaRunner.cpp

@@ -0,0 +1,30 @@
+#include "JavaRunner.h"
+
+#include <dispatch/dispatch.h>
+#include <subprocess.hpp>
+
+using namespace subprocess;
+
+JavaRunner::JavaRunner(std::string javaBin, const fp_proc_t& execFn, const fp_t& cb)
+  : javaBinaryPath(javaBin), executingFn(execFn), exitCallbackFn(cb)
+{
+  javaProcess = std::shared_ptr<Popen>(new Popen({javaBin.c_str(), "-version"}, defer_spawn{true}));
+}
+
+void JavaRunner::execute()
+{
+  try {
+    auto executingFn = dispatch_block_create(DISPATCH_BLOCK_INHERIT_QOS_CLASS, ^{
+      this->executingFn(this);
+    });
+    dispatch_async(dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), executingFn);
+    dispatch_block_wait(executingFn, DISPATCH_TIME_FOREVER);
+
+    // Here, the process is done executing.
+
+    printf("Finished executingFn - Runs callbackFn\n");
+    this->exitCallbackFn();
+  } catch (std::exception* ex) {
+    printf("ERROR: %s\n", ex->what());
+  }
+}