Indexing: have the indexer put itself in the ionice "idle" class by default (can be changed in the config)

src/index/rclmon.h

@@ -103,6 +103,9 @@ extern bool startMonitor(RclConfig *conf, int flags);
 /** Main routine for the event receiving thread */
 extern void *rclMonRcvRun(void *);
 
+/** Utility routine to try and set ionice */
+extern void rclMonIonice(RclConfig *conf);
+
 // Specific debug macro for monitor synchronization events
 #define MONDEB LOGDEB2
 

src/index/rclmonprc.cpp

@@ -42,6 +42,7 @@
 #include "recollindex.h"
 #include "pathut.h"
 #include "x11mon.h"
+#include "rclionice.h"
 
 typedef unsigned long mttcast;
 
@@ -545,4 +546,15 @@ bool startMonitor(RclConfig *conf, int opts)
     LOGDEB(("Monitor: returning\n"));
     return true;
 }
+
+
+void rclMonIonice(RclConfig *config)
+{
+    string clss, classdata;
+    if (!config->getConfParam("monioniceclass", clss) || clss.empty())
+	clss = "3";
+    config->getConfParam("monioniceclassdata", classdata);
+    rclionice(clss, classdata);
+}
+
 #endif // RCL_MONITOR

src/index/recollindex.cpp

@@ -294,6 +294,8 @@ int main(int argc, const char **argv)
     if (setpriority(PRIO_PROCESS, 0, 20) != 0) {
         LOGINFO(("recollindex: can't setpriority(), errno %d\n", errno));
     }
+    // Try to ionice. This does not work on all platforms
+    rclMonIonice(config);
 
     if (op_flags & (OPT_i|OPT_e)) {
 	lockorexit(&pidfile);
@@ -350,12 +352,16 @@ int main(int argc, const char **argv)
 	      exit(1);
 	    }
 	}
+	pidfile.write_pid();
+
         // Not too sure if I have to redo the nice thing after daemon(),
         // can't hurt anyway (easier than testing on all platforms...)
         if (setpriority(PRIO_PROCESS, 0, 20) != 0) {
             LOGINFO(("recollindex: can't setpriority(), errno %d\n", errno));
         }
-	pidfile.write_pid();
+	// Try to ionice. This does not work on all platforms
+	rclMonIonice(config);
+
 	if (sleepsecs > 0) {
 	    LOGDEB(("recollindex: sleeping %d\n", sleepsecs));
 	    for (int i = 0; i < sleepsecs; i++) {