Agents may OOM during recovery if there are too many tasks or executors

diff --git a/src/examples/long_lived_framework.cpp b/src/examples/long_lived_framework.cpp
index 7c57eb5..1263d82 100644
--- a/src/examples/long_lived_framework.cpp
+++ b/src/examples/long_lived_framework.cpp
@@ -358,16 +358,6 @@ private:
   // Helper to launch a task using an offer.
   void launch(const Offer& offer)
   {
-    int taskId = tasksLaunched++;
-    ++metrics.tasks_launched;
-
-    TaskInfo task;
-    task.set_name("Task " + stringify(taskId));
-    task.mutable_task_id()->set_value(stringify(taskId));
-    task.mutable_agent_id()->MergeFrom(offer.agent_id());
-    task.mutable_resources()->CopyFrom(taskResources);
-    task.mutable_executor()->CopyFrom(executor);
-
     Call call;
     call.set_type(Call::ACCEPT);
 
@@ -380,7 +370,23 @@ private:
     Offer::Operation* operation = accept->add_operations();
     operation->set_type(Offer::Operation::LAUNCH);
 
-    operation->mutable_launch()->add_task_infos()->CopyFrom(task);
+    // Launch as many tasks as possible in the given offer.
+    Resources remaining = Resources(offer.resources()).flatten();
+    while (remaining.contains(taskResources)) {
+      int taskId = tasksLaunched++;
+      ++metrics.tasks_launched;
+
+      TaskInfo task;
+      task.set_name("Task " + stringify(taskId));
+      task.mutable_task_id()->set_value(stringify(taskId));
+      task.mutable_agent_id()->MergeFrom(offer.agent_id());
+      task.mutable_resources()->CopyFrom(taskResources);
+      task.mutable_executor()->CopyFrom(executor);
+
+      operation->mutable_launch()->add_task_infos()->CopyFrom(task);
+
+      remaining -= taskResources;
+    }
 
     mesos->send(call);
   }