Improve core dump setting

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/ec/trunk@36362 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,9 @@
+2013-03-15  Richard Frith-Macdonald <rfm@gnu.org>
+
+	* EcProcess.h: Document EcCoreSize
+	* EcProcess.m: Change so that if no value is set, we don't use any
+        limit, and so that if a negative value is set we use 1GB
+
 2013-03-13  Richard Frith-Macdonald <rfm@gnu.org>
 
         * GNUmakefile: 1.0.2 release

EcProcess.h

@@ -50,6 +50,13 @@
 	<subsect>
 	  <heading>startup settings</heading>
 	  <deflist>
+	    <term>EcCoreSize</term>
+	    <desc>
+	      Specifies the maximum size (in bytes) for any core-dump of the
+              process.
+              If this is negative, the default size of 1GB is used.<br />
+	      If this is zero (or no value is set) then no limit is set.
+	    </desc>
 	    <term>EcDebug-</term>
 	    <desc>
 	      Any key of the form EcDebug-xxx turns on the xxx debug level

EcProcess.m

@@ -3109,32 +3109,36 @@ NSLog(@"Ignored attempt to set timer interval to %g ... using 10.0", interval);
 	    }
 	}
 
-
       i = [cmdDefs integerForKey: @"CoreSize"];
-      if (i <= 0)
+      if (i < 0)
 	{
-	  i = 250000000;
+	  i = 1024 * 1024 * 1024;       // 1 GB default
-	}
-      if (getrlimit(RLIMIT_CORE, &rlim) < 0)
-	{
-	  NSLog(@"Unable to get core file size limit: %d", errno);
-	}
-      else
-	{
-	  if (rlim.rlim_max < i)
-	    {
-	      NSLog(@"Hard limit for core file size (%lu) less than desired",
-		rlim.rlim_max);
-	    }
-	  else
-	    {
-	      rlim.rlim_cur = i;
-	      if (setrlimit(RLIMIT_CORE, &rlim) < 0)
-		{
-		  NSLog(@"Unable to set core file size limit: %d", errno);
-		}
-	    }
 	}
+      if (i > 0)
+        {
+          if (getrlimit(RLIMIT_CORE, &rlim) < 0)
+            {
+              NSLog(@"Unable to get core file size limit: %d", errno);
+            }
+          else
+            {
+              if (rlim.rlim_max < i)
+                {
+                  NSLog(@"Hard limit for core file size (%"PRIuPTR
+                    @") less than requested (%"PRIdPTR,
+                    (NSUInteger)rlim.rlim_max, i);
+                }
+              else
+                {
+                  rlim.rlim_cur = i;
+                  if (setrlimit(RLIMIT_CORE, &rlim) < 0)
+                    {
+                      NSLog(@"Unable to set core file size limit to %"PRIdPTR
+                        @", errno: %d", i, errno);
+                    }
+                }
+            }
+        }
 
       if (nil == noNetConfig)
 	{