Create new process group

Signed-off-by: Michael Carroll <[email protected]>

include/gz/utils/Subprocess.hh

@@ -91,7 +91,7 @@ class Subprocess
   {
   }
 
-
+  /// \brief Create a subprocess
   private: void Create()
   {
     if (this->process != nullptr)

include/gz/utils/detail/subprocess.h

@@ -497,6 +497,7 @@ int subprocess_create_ex(const char *const commandLine[], int options,
   const unsigned long startFUseStdHandles = 0x00000100;
   const unsigned long handleFlagInherit = 0x00000001;
   const unsigned long createNoWindow = 0x08000000;
+  const unsigned long createNewProcessGroup = 0x00000200;
   struct subprocess_subprocess_information_s processInfo;
   struct subprocess_security_attributes_s saAttr = {sizeof(saAttr),
                                                     SUBPROCESS_NULL, 1};
@@ -523,6 +524,7 @@ int subprocess_create_ex(const char *const commandLine[], int options,
   startInfo.cb = sizeof(startInfo);
   startInfo.dwFlags = startFUseStdHandles;
 
+  flags |= createNewProcessGroup;
   if (subprocess_option_no_window == (options & subprocess_option_no_window)) {
     flags |= createNoWindow;
   }