7022370: Launcher ergonomics should provide simple default implementation

Summary: Use a common, platform independent, implementation unless an architecture specific implementation exists
Reviewed-by: ksrini, mchung, ohair, gbenson

make/java/jli/Makefile

@@ -79,13 +79,17 @@ FILES_c = \
 	zutil.c
 
 ifneq ($(PLATFORM), windows)
-
-FILES_c += \
-	$(CTARGDIR)ergo.c \
-	$(CTARGDIR)ergo_$(ERGO_FAMILY).c
+  FILES_c += ergo.c 
+  ERGO_ARCH_FILE = ergo_$(ERGO_FAMILY).c
+  # if the architecture specific ergo file exists then
+  # use it, else use the generic definitions from ergo.c
+  ifneq ($(wildcard $(LAUNCHER_PLATFORM_SRC)/$(ERGO_ARCH_FILE)),)
+    FILES_c += $(ERGO_ARCH_FILE)
+  else
+    OTHER_CPPFLAGS += -DUSE_GENERIC_ERGO
+  endif
 endif
 
-
 # Names of arch directories
 LIBARCH_DEFINES = -DLIBARCHNAME='"$(LIBARCH)"'
 ifeq ($(PLATFORM), solaris)

src/solaris/bin/ergo.c

 /*
- * Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -67,6 +67,35 @@ ServerClassMachine(void) {
   }
 }
 
+#ifdef USE_GENERIC_ERGO
+/* Ask the OS how many processors there are. */
+static unsigned long
+physical_processors(void) {
+  const unsigned long sys_processors = sysconf(_SC_NPROCESSORS_CONF);
+  JLI_TraceLauncher("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors);
+  return sys_processors;
+}
+
+jboolean
+ServerClassMachineImpl(void) {
+  jboolean            result            = JNI_FALSE;
+  /* How big is a server class machine? */
+  const unsigned long server_processors = 2UL;
+  const uint64_t      server_memory     = 2UL * GB;
+  const uint64_t      actual_memory     = physical_memory();
+
+  /* Is this a server class machine? */
+  if (actual_memory >= server_memory) {
+    const unsigned long actual_processors = physical_processors();
+    if (actual_processors >= server_processors) {
+      result = JNI_TRUE;
+    }
+  }
+  JLI_TraceLauncher("unix_" LIBARCHNAME "_ServerClassMachine: %s\n",
+           (result == JNI_TRUE ? "JNI_TRUE" : "JNI_FALSE"));
+  return result;
+}
+#endif
 
 /* Compute physical memory by asking the OS */
 uint64_t

src/solaris/bin/ergo_sparc.c

-/*
- * Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-#include "ergo.h"
-
-
-/* Methods for solaris-sparc and linux-sparc: these are easy. */
-
-/* Ask the OS how many processors there are. */
-static unsigned long
-physical_processors(void) {
-  const unsigned long sys_processors = sysconf(_SC_NPROCESSORS_CONF);
-
-  JLI_TraceLauncher("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors);
-  return sys_processors;
-}
-
-/* The sparc version of the "server-class" predicate. */
-jboolean
-ServerClassMachineImpl(void) {
-  jboolean            result            = JNI_FALSE;
-  /* How big is a server class machine? */
-  const unsigned long server_processors = 2UL;
-  const uint64_t      server_memory     = 2UL * GB;
-  const uint64_t      actual_memory     = physical_memory();
-
-  /* Is this a server class machine? */
-  if (actual_memory >= server_memory) {
-    const unsigned long actual_processors = physical_processors();
-    if (actual_processors >= server_processors) {
-      result = JNI_TRUE;
-    }
-  }
-  JLI_TraceLauncher("unix_" LIBARCHNAME "_ServerClassMachine: %s\n",
-           (result == JNI_TRUE ? "JNI_TRUE" : "JNI_FALSE"));
-  return result;
-}

src/solaris/bin/ergo_zero.c

-/*
- * Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-#include "ergo.h"
-
-
-/* Methods for solaris-sparc and linux-sparc: these are easy. */
-
-/* Ask the OS how many processors there are. */
-static unsigned long
-physical_processors(void) {
-  const unsigned long sys_processors = sysconf(_SC_NPROCESSORS_CONF);
-
-  JLI_TraceLauncher("sysconf(_SC_NPROCESSORS_CONF): %lu\n", sys_processors);
-  return sys_processors;
-}
-
-/* The sparc version of the "server-class" predicate. */
-jboolean
-ServerClassMachineImpl(void) {
-  jboolean            result            = JNI_FALSE;
-  /* How big is a server class machine? */
-  const unsigned long server_processors = 2UL;
-  const uint64_t      server_memory     = 2UL * GB;
-  const uint64_t      actual_memory     = physical_memory();
-
-  /* Is this a server class machine? */
-  if (actual_memory >= server_memory) {
-    const unsigned long actual_processors = physical_processors();
-    if (actual_processors >= server_processors) {
-      result = JNI_TRUE;
-    }
-  }
-  JLI_TraceLauncher("unix_" LIBARCHNAME "_ServerClassMachine: %s\n",
-           (result == JNI_TRUE ? "JNI_TRUE" : "JNI_FALSE"));
-  return result;
-}