X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=rts%2FRtsFlags.c;h=69064ea743a7b99f57fa24e8ec6147e891b23a81;hb=1a4ff8d84caf442116e48557f3b8eee353455430;hp=4c1f739e894615e8f62948ece354397c18cd31ef;hpb=1bd1fb932375bc4b065cc8de23f0d251e8075395;p=ghc-hetmet.git

diff --git a/rts/RtsFlags.c b/rts/RtsFlags.c
index 4c1f739..69064ea 100644
--- a/rts/RtsFlags.c
+++ b/rts/RtsFlags.c
@@ -212,6 +212,7 @@ void initRtsFlagsDefaults(void)
     RtsFlags.ParFlags.nNodes	        = 1;
     RtsFlags.ParFlags.migrate           = rtsTrue;
     RtsFlags.ParFlags.wakeupMigrate     = rtsFalse;
+    RtsFlags.ParFlags.gcThreads         = 1;
 #endif
 
 #ifdef PAR
@@ -336,6 +337,7 @@ usage_text[] = {
 "The following run time system options are available:",
 "",
 "  -?       Prints this message and exits; the program is not executed",
+"  --info   Print information about the RTS used by this program",
 "",
 "  -K<size> Sets the maximum stack size (default 8M)  Egs: -K32k   -K512k",
 "  -k<size> Sets the initial thread stack size (default 1k)  Egs: -k4k   -k2m",
@@ -444,6 +446,7 @@ usage_text[] = {
 #endif /* DEBUG */
 #if defined(THREADED_RTS) && !defined(NOSMP)
 "  -N<n>     Use <n> OS threads (default: 1)",
+"  -g<n>     Use <n> OS threads for GC (default: 1)",
 "  -qm       Don't automatically migrate threads between CPUs",
 "  -qw       Migrate a thread to the current CPU when it is woken up",
 #endif
@@ -684,18 +687,7 @@ error = rtsTrue;
                   }
                   else if (strequal("info",
                                &rts_argv[arg][2])) {
-                      char *s;
-                      printf("RTS info:\n");
-                      printf("RTS from GHC " ProjectVersion "\n");
-                      printf("RTS way " RtsWay "\n");
-                      printf("Host platform " HostPlatform "\n");
-                      printf("Build platform " BuildPlatform "\n");
-                      printf("Target platform " TargetPlatform "\n");
-                      s = strcmp(GhcUnregisterised, "YES") == 0 ? "un" : "";
-                      printf("Compiler is %sregisterised\n", s);
-                      s = strcmp(GhcEnableTablesNextToCode, "YES") == 0
-                        ? "" : "not ";
-                      printf("Tables are %snext to code\n", s);
+                      printRtsInfo();
                       exit(0);
                   }
                   else {
@@ -1130,6 +1122,24 @@ error = rtsTrue;
 		}
 		) break;
 
+	      case 'g':
+		THREADED_BUILD_ONLY(
+		if (rts_argv[arg][2] != '\0') {
+		    RtsFlags.ParFlags.gcThreads
+		      = strtol(rts_argv[arg]+2, (char **) NULL, 10);
+		    if (RtsFlags.ParFlags.nNodes <= 0) {
+		      errorBelch("bad value for -g");
+		      error = rtsTrue;
+		    }
+#if defined(PROFILING)
+                    if (RtsFlags.ParFlags.nNodes > 1) {
+                        errorBelch("bad option %s: only -N1 is supported with profiling", rts_argv[arg]);
+		      error = rtsTrue;
+                    }
+#endif
+		}
+		) break;
+
 	      case 'q':
 		    switch (rts_argv[arg][2]) {
 		    case '\0':