1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/src/os/solaris/vm/threadCritical_solaris.cpp Sat Dec 01 00:00:00 2007 +0000 1.3 @@ -0,0 +1,83 @@ 1.4 +/* 1.5 + * Copyright 2001-2003 Sun Microsystems, Inc. All Rights Reserved. 1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 1.7 + * 1.8 + * This code is free software; you can redistribute it and/or modify it 1.9 + * under the terms of the GNU General Public License version 2 only, as 1.10 + * published by the Free Software Foundation. 1.11 + * 1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT 1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1.15 + * version 2 for more details (a copy is included in the LICENSE file that 1.16 + * accompanied this code). 1.17 + * 1.18 + * You should have received a copy of the GNU General Public License version 1.19 + * 2 along with this work; if not, write to the Free Software Foundation, 1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1.21 + * 1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or 1.24 + * have any questions. 1.25 + * 1.26 + */ 1.27 + 1.28 +#include "incls/_precompiled.incl" 1.29 +#include "incls/_threadCritical_solaris.cpp.incl" 1.30 + 1.31 +// OS-includes here 1.32 +#include <thread.h> 1.33 +#include <synch.h> 1.34 + 1.35 +// 1.36 +// See threadCritical.hpp for details of this class. 1.37 +// 1.38 +// For some reason, we don't do locking until the 1.39 +// os::init() call completes. I'm not sure why this 1.40 +// is, and have left it that way for now. This should 1.41 +// be reviewed later. 1.42 + 1.43 +static mutex_t global_mut; 1.44 +static thread_t global_mut_owner = -1; 1.45 +static int global_mut_count = 0; 1.46 +static bool initialized = false; 1.47 + 1.48 +ThreadCritical::ThreadCritical() { 1.49 + if (initialized) { 1.50 + thread_t owner = thr_self(); 1.51 + if (global_mut_owner != owner) { 1.52 + if (os::Solaris::mutex_lock(&global_mut)) 1.53 + fatal1("ThreadCritical::ThreadCritical: mutex_lock failed (%s)", strerror(errno)); 1.54 + assert(global_mut_count == 0, "must have clean count"); 1.55 + assert(global_mut_owner == -1, "must have clean owner"); 1.56 + } 1.57 + global_mut_owner = owner; 1.58 + ++global_mut_count; 1.59 + } else { 1.60 + assert (Threads::number_of_threads() == 0, "valid only during initialization"); 1.61 + } 1.62 +} 1.63 + 1.64 +ThreadCritical::~ThreadCritical() { 1.65 + if (initialized) { 1.66 + assert(global_mut_owner == thr_self(), "must have correct owner"); 1.67 + assert(global_mut_count > 0, "must have correct count"); 1.68 + --global_mut_count; 1.69 + if (global_mut_count == 0) { 1.70 + global_mut_owner = -1; 1.71 + if (os::Solaris::mutex_unlock(&global_mut)) 1.72 + fatal1("ThreadCritical::~ThreadCritical: mutex_unlock failed (%s)", strerror(errno)); 1.73 + } 1.74 + } else { 1.75 + assert (Threads::number_of_threads() == 0, "valid only during initialization"); 1.76 + } 1.77 +} 1.78 + 1.79 +void ThreadCritical::initialize() { 1.80 + // This method is called at the end of os::init(). Until 1.81 + // then, we don't do real locking. 1.82 + initialized = true; 1.83 +} 1.84 + 1.85 +void ThreadCritical::release() { 1.86 +}