From 5fb277529f5aa51bf928ffebab0a8e32c702f5a2 Mon Sep 17 00:00:00 2001
From: Antonio SJ Musumeci <trapexit@spawn.link>
Date: Tue, 17 Mar 2015 20:39:20 -0400
Subject: [PATCH] attempt to set priority to -10 on startup. closes #65

---
 src/mergerfs.cpp  |  5 ++++-
 src/resources.cpp | 10 +++++++++-
 src/resources.hpp |  3 ++-
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/src/mergerfs.cpp b/src/mergerfs.cpp
index 1f35f95e..254b4d12 100644
--- a/src/mergerfs.cpp
+++ b/src/mergerfs.cpp
@@ -82,7 +82,7 @@ namespace local
   {
     return fs::basename(argv[0]);
   }
-  
+
   static
   void
   get_fuse_operations(struct fuse_operations &ops)
@@ -152,10 +152,13 @@ namespace local
   void
   setup_resources(void)
   {
+    const int prio = -10;
+
     std::srand(time(NULL));
     mergerfs::resources::reset_umask();
     mergerfs::resources::maxout_rlimit_nofile();
     mergerfs::resources::maxout_rlimit_fsize();
+    mergerfs::resources::setpriority(prio);
   }
 }
 
diff --git a/src/resources.cpp b/src/resources.cpp
index 6f31429a..1d81ce93 100644
--- a/src/resources.cpp
+++ b/src/resources.cpp
@@ -40,7 +40,7 @@ namespace mergerfs
     }
 
     int
-    maxout_rlimit(int resource)
+    maxout_rlimit(const int resource)
     {
       int rv;
       struct rlimit rlim;
@@ -78,5 +78,13 @@ namespace mergerfs
     {
       return maxout_rlimit(RLIMIT_FSIZE);
     }
+
+    int
+    setpriority(const int prio)
+    {
+      const int SELF = 0;
+
+      return ::setpriority(PRIO_PROCESS,SELF,prio);
+    }
   }
 }
diff --git a/src/resources.hpp b/src/resources.hpp
index ed0daef0..9d1090ea 100644
--- a/src/resources.hpp
+++ b/src/resources.hpp
@@ -27,8 +27,9 @@ namespace mergerfs
   namespace resources
   {
     int reset_umask(void);
-    int maxout_rlimit(int resource);
+    int maxout_rlimit(const int resource);
     int maxout_rlimit_nofile(void);
     int maxout_rlimit_fsize(void);
+    int setpriority(const int prio);
   }
 }