Bootstrap subprocess.

1 files changed, 54 insertions, 0 deletions

diff --git a/include/cru/common/SubProcess.h b/include/cru/common/SubProcess.h
new file mode 100644
index 00000000..341afc5c
--- /dev/null
+++ b/include/cru/common/SubProcess.h
@@ -0,0 +1,54 @@
+#pragma once
+#include "Base.h"
+#include "String.h"
+
+#include <chrono>
+#include <optional>
+#include <vector>
+
+namespace cru {
+enum class PlatformSubProcessStatus {
+  /**
+   * @brief The process has not been created and started.
+   */
+  Prepare,
+  /**
+   * @brief The process is running now.
+   */
+  Running,
+  /**
+   * @brief The process has been exited.
+   */
+  Exited,
+};
+
+/**
+ * Interface of a platform process. It is one-time, which means it starts and
+ * exits and can't start again.
+ */
+struct IPlatformSubProcess : virtual Interface {
+  /**
+   * Create and start a real process.
+   */
+  void Start(String program, std::vector<String> arguments,
+             std::vector<String> environments);
+  void Wait(std::optional<std::chrono::milliseconds> wait_time);
+  void Reap();
+  PlatformSubProcessStatus GetStatus() const;
+  int GetExitCode() const;
+};
+
+class CRU_BASE_API SubProcess : public Object {
+ public:
+  SubProcess();
+
+  CRU_DELETE_COPY(SubProcess)
+
+  SubProcess(SubProcess&& other);
+  SubProcess& operator=(SubProcess&& other);
+
+  ~SubProcess();
+
+ private:
+};
+}  // namespace cru