Add JobManager::cancel_all_jobs().

2 files changed, 20 insertions, 0 deletions

diff --git a/src/lib/job_manager.cc b/src/lib/job_manager.cc
index 3fac8e6fa..a53eb6ebd 100644
--- a/src/lib/job_manager.cc
+++ b/src/lib/job_manager.cc
@@ -348,3 +348,21 @@ JobManager::resume ()
 	_paused = false;
 	_schedule_condition.notify_all();
 }
+
+
+void
+JobManager::cancel_all_jobs()
+{
+	boost::mutex::scoped_lock lm(_mutex);
+	auto jobs = _jobs;
+	lm.unlock();
+
+	/* Calling Job::cancel() will result in JobManager::job_finished() being called, so we need
+	 * to do this without a lock on _mutex.  I think the worst case is that we fail to stop a
+	 * job that got started since we lm.unlock()ed.
+	 */
+	for (auto job: jobs) {
+		job->cancel();
+	}
+}
+
diff --git a/src/lib/job_manager.h b/src/lib/job_manager.h
index b4cb49060..9e28c4362 100644
--- a/src/lib/job_manager.h
+++ b/src/lib/job_manager.h
@@ -84,6 +84,8 @@ public:
 		std::function<void (Job::Result)> ready
 		);
 
+	void cancel_all_jobs();
+
 	boost::signals2::signal<void (std::weak_ptr<Job>)> JobAdded;
 	boost::signals2::signal<void ()> JobsReordered;
 	boost::signals2::signal<void (boost::optional<std::string>, boost::optional<std::string>)> ActiveJobsChanged;