http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58669
Testing:
$ /usr/lib/jvm/icedtea-6/bin/java TestProcessors
Processors: 8
$ /usr/lib/jvm/gcj-jdk/bin/java -version
java version "1.5.0"
gij (GNU libgcj) version 4.8.1
$ /usr/lib/jvm/gcj-jdk/bin/java TestProcessors
Processors: 1
$ /home/andrew/build/gcj/bin/gij -version
java version "1.5.0"
gij (GNU libgcj) version 4.9.0 20131013 (experimental) [trunk revision 203508]
$ /home/andrew/build/gcj/bin/gij TestProcessors
Processors: 8
ChangeLog:
2013-10-12 Andrew John Hughes <gnu.and...@member.fsf.org>
* java/lang/natRuntime.cc:
(availableProcessors()): Implement.
Fixes PR gcc/58669.
Ok for trunk and 4.8?
--
Andrew :)
Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)
PGP Key: 248BDC07 (https://keys.indymedia.org/)
Fingerprint = EC5A 1F5E C0AD 1D15 8F1F 8F91 3B96 A578 248B DC07
Index: libjava/java/lang/natRuntime.cc
===================================================================
--- libjava/java/lang/natRuntime.cc (revision 203508)
+++ libjava/java/lang/natRuntime.cc (working copy)
@@ -48,6 +48,10 @@
#include <langinfo.h>
#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
#ifdef USE_LTDL
@@ -303,8 +307,15 @@
jint
java::lang::Runtime::availableProcessors (void)
{
- // FIXME: find the real value.
- return 1;
+ long procs = -1;
+
+#ifdef HAVE_UNISTD_H
+ procs = sysconf(_SC_NPROCESSORS_ONLN);
+#endif
+
+ if (procs == -1)
+ return 1;
+ return (jint) procs;
}
jstring
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