Mercurial > jdk8-mips64-public > hotspot / annotate
src/os/solaris/vm/threadCritical_solaris.cpp@754c24457b20 (annotated)
src/os/solaris/vm/threadCritical_solaris.cpp
Wed, 27 Mar 2013 19:21:18 +0100
- author
- tschatzl
- date
- Wed, 27 Mar 2013 19:21:18 +0100
- changeset 4854
- 754c24457b20
- parent 4299
- f34d701e952e
- child 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
7112912: Message "Error occurred during initialization of VM" on boxes with lots of RAM
Summary: Ergonomics now also takes available virtual memory into account when deciding for a heap size. The helper method to determine the maximum allocatable memory block now uses the appropriate OS specific calls to retrieve available virtual memory for the java process. In 32 bit environments this method now also searches for the maximum actually reservable amount of memory. Merge previously separate implementations for Linux/BSD/Solaris into a single method.
Reviewed-by: jmasa, tamao
| duke@435 | 1 | /* |
| stefank@2314 | 2 | * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| stefank@2314 | 25 | #include "precompiled.hpp" |
| stefank@4299 | 26 | #include "runtime/thread.inline.hpp" |
| stefank@2314 | 27 | #include "runtime/threadCritical.hpp" |
| duke@435 | 28 | |
| duke@435 | 29 | // OS-includes here |
| duke@435 | 30 | #include <thread.h> |
| duke@435 | 31 | #include <synch.h> |
| duke@435 | 32 | |
| duke@435 | 33 | // |
| duke@435 | 34 | // See threadCritical.hpp for details of this class. |
| duke@435 | 35 | // |
| duke@435 | 36 | // For some reason, we don't do locking until the |
| duke@435 | 37 | // os::init() call completes. I'm not sure why this |
| duke@435 | 38 | // is, and have left it that way for now. This should |
| duke@435 | 39 | // be reviewed later. |
| duke@435 | 40 | |
| duke@435 | 41 | static mutex_t global_mut; |
| duke@435 | 42 | static thread_t global_mut_owner = -1; |
| duke@435 | 43 | static int global_mut_count = 0; |
| duke@435 | 44 | static bool initialized = false; |
| duke@435 | 45 | |
| duke@435 | 46 | ThreadCritical::ThreadCritical() { |
| duke@435 | 47 | if (initialized) { |
| duke@435 | 48 | thread_t owner = thr_self(); |
| duke@435 | 49 | if (global_mut_owner != owner) { |
| duke@435 | 50 | if (os::Solaris::mutex_lock(&global_mut)) |
| jcoomes@1845 | 51 | fatal(err_msg("ThreadCritical::ThreadCritical: mutex_lock failed (%s)", |
| jcoomes@1845 | 52 | strerror(errno))); |
| duke@435 | 53 | assert(global_mut_count == 0, "must have clean count"); |
| duke@435 | 54 | assert(global_mut_owner == -1, "must have clean owner"); |
| duke@435 | 55 | } |
| duke@435 | 56 | global_mut_owner = owner; |
| duke@435 | 57 | ++global_mut_count; |
| duke@435 | 58 | } else { |
| duke@435 | 59 | assert (Threads::number_of_threads() == 0, "valid only during initialization"); |
| duke@435 | 60 | } |
| duke@435 | 61 | } |
| duke@435 | 62 | |
| duke@435 | 63 | ThreadCritical::~ThreadCritical() { |
| duke@435 | 64 | if (initialized) { |
| duke@435 | 65 | assert(global_mut_owner == thr_self(), "must have correct owner"); |
| duke@435 | 66 | assert(global_mut_count > 0, "must have correct count"); |
| duke@435 | 67 | --global_mut_count; |
| duke@435 | 68 | if (global_mut_count == 0) { |
| duke@435 | 69 | global_mut_owner = -1; |
| duke@435 | 70 | if (os::Solaris::mutex_unlock(&global_mut)) |
| jcoomes@1845 | 71 | fatal(err_msg("ThreadCritical::~ThreadCritical: mutex_unlock failed " |
| jcoomes@1845 | 72 | "(%s)", strerror(errno))); |
| duke@435 | 73 | } |
| duke@435 | 74 | } else { |
| duke@435 | 75 | assert (Threads::number_of_threads() == 0, "valid only during initialization"); |
| duke@435 | 76 | } |
| duke@435 | 77 | } |
| duke@435 | 78 | |
| duke@435 | 79 | void ThreadCritical::initialize() { |
| duke@435 | 80 | // This method is called at the end of os::init(). Until |
| duke@435 | 81 | // then, we don't do real locking. |
| duke@435 | 82 | initialized = true; |
| duke@435 | 83 | } |
| duke@435 | 84 | |
| duke@435 | 85 | void ThreadCritical::release() { |
| duke@435 | 86 | } |
