Mercurial > hg > graal-jvmci-8
diff src/os/solaris/vm/threadCritical_solaris.cpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | f03d0a26bf83 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/os/solaris/vm/threadCritical_solaris.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,83 @@ +/* + * Copyright 2001-2003 Sun Microsystems, Inc. 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. + * + * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +#include "incls/_precompiled.incl" +#include "incls/_threadCritical_solaris.cpp.incl" + +// OS-includes here +#include <thread.h> +#include <synch.h> + +// +// See threadCritical.hpp for details of this class. +// +// For some reason, we don't do locking until the +// os::init() call completes. I'm not sure why this +// is, and have left it that way for now. This should +// be reviewed later. + +static mutex_t global_mut; +static thread_t global_mut_owner = -1; +static int global_mut_count = 0; +static bool initialized = false; + +ThreadCritical::ThreadCritical() { + if (initialized) { + thread_t owner = thr_self(); + if (global_mut_owner != owner) { + if (os::Solaris::mutex_lock(&global_mut)) + fatal1("ThreadCritical::ThreadCritical: mutex_lock failed (%s)", strerror(errno)); + assert(global_mut_count == 0, "must have clean count"); + assert(global_mut_owner == -1, "must have clean owner"); + } + global_mut_owner = owner; + ++global_mut_count; + } else { + assert (Threads::number_of_threads() == 0, "valid only during initialization"); + } +} + +ThreadCritical::~ThreadCritical() { + if (initialized) { + assert(global_mut_owner == thr_self(), "must have correct owner"); + assert(global_mut_count > 0, "must have correct count"); + --global_mut_count; + if (global_mut_count == 0) { + global_mut_owner = -1; + if (os::Solaris::mutex_unlock(&global_mut)) + fatal1("ThreadCritical::~ThreadCritical: mutex_unlock failed (%s)", strerror(errno)); + } + } else { + assert (Threads::number_of_threads() == 0, "valid only during initialization"); + } +} + +void ThreadCritical::initialize() { + // This method is called at the end of os::init(). Until + // then, we don't do real locking. + initialized = true; +} + +void ThreadCritical::release() { +}