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comparison src/os_cpu/linux_zero/vm/os_linux_zero.cpp @ 1176:d11ce1551e8d

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6917698: os::is_allocatable Zero fix for 32-bit platforms Summary: Recent changes call os::is_allocatable which was not implemented in Zero. Reviewed-by: twisti Contributed-by: Edward Nevill <ed@camswl.com>
author twisti
date Mon, 18 Jan 2010 05:02:41 -0800
parents 354d3184f6b2
children 67d74f7a15d9
comparison
equal deleted inserted replaced
1175:614b7e3a9f48 1176:d11ce1551e8d
1 /* 1 /*
2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
3 * Copyright 2007, 2008 Red Hat, Inc. 3 * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 * 5 *
6 * This code is free software; you can redistribute it and/or modify it 6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as 7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation. 8 * published by the Free Software Foundation.
237 void os::Linux::set_fpu_control_word(int fpu) { 237 void os::Linux::set_fpu_control_word(int fpu) {
238 ShouldNotCallThis(); 238 ShouldNotCallThis();
239 } 239 }
240 240
241 bool os::is_allocatable(size_t bytes) { 241 bool os::is_allocatable(size_t bytes) {
242 ShouldNotCallThis(); 242 #ifdef _LP64
243 return true;
244 #else
245 if (bytes < 2 * G) {
246 return true;
247 }
248
249 char* addr = reserve_memory(bytes, NULL);
250
251 if (addr != NULL) {
252 release_memory(addr, bytes);
253 }
254
255 return addr != NULL;
256 #endif // _LP64
243 } 257 }
244 258
245 /////////////////////////////////////////////////////////////////////////////// 259 ///////////////////////////////////////////////////////////////////////////////
246 // thread stack 260 // thread stack
247 261