From 1abf2fbac63c90c315cf6e87d6bce0c285bd4019 Mon Sep 17 00:00:00 2001
From: Egor Tensin <Egor.Tensin@gmail.com>
Date: Sun, 25 Oct 2020 01:57:29 +0300
Subject: Process: add termination methods

---
 src/process.cpp | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

(limited to 'src')

diff --git a/src/process.cpp b/src/process.cpp
index a9f24cc..c5e68d7 100644
--- a/src/process.cpp
+++ b/src/process.cpp
@@ -110,6 +110,22 @@ Process Process::runas(const CommandLine& cmd_line) {
     return Process{shell_execute(cmd_line)};
 }
 
+bool Process::is_running() const {
+    const auto ret = ::WaitForSingleObject(static_cast<HANDLE>(m_handle), 0);
+
+    switch (ret) {
+        case WAIT_OBJECT_0:
+            return false;
+        case WAIT_TIMEOUT:
+            return true;
+        case WAIT_FAILED:
+            throw error::windows(GetLastError(), "WaitForSingleObject");
+        default:
+            // Shouldn't happen.
+            throw error::custom(ret, "WaitForSingleObject");
+    }
+}
+
 void Process::wait() const {
     const auto ret = ::WaitForSingleObject(static_cast<HANDLE>(m_handle), INFINITE);
 
@@ -124,6 +140,17 @@ void Process::wait() const {
     }
 }
 
+void Process::terminate(int ec) const {
+    if (!::TerminateProcess(static_cast<HANDLE>(m_handle), static_cast<UINT>(ec))) {
+        throw error::windows(GetLastError(), "TerminateProcess");
+    }
+}
+
+void Process::shut_down(int ec) const {
+    terminate(ec);
+    wait();
+}
+
 int Process::get_exit_code() const {
     DWORD ec = 0;
 
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