jdk8-mips64-public/hotspot: src/os/solaris/vm/threadCritical

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

     1 /*

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     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

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    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

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    25 #include "precompiled.hpp"

    26 #include "runtime/thread.inline.hpp"

    27 #include "runtime/threadCritical.hpp"

    29 // OS-includes here

    30 #include <thread.h>

    31 #include <synch.h>

    33 //

    34 // See threadCritical.hpp for details of this class.

    35 //

    36 // For some reason, we don't do locking until the

    37 // os::init() call completes. I'm not sure why this

    38 // is, and have left it that way for now. This should

    39 // be reviewed later.

    41 static  mutex_t  global_mut;

    42 static  thread_t global_mut_owner = -1;

    43 static  int      global_mut_count = 0;

    44 static  bool     initialized = false;

    46 ThreadCritical::ThreadCritical() {

    47   if (initialized) {

    48     thread_t owner = thr_self();

    49     if (global_mut_owner != owner) {

    50       if (os::Solaris::mutex_lock(&global_mut))

    51         fatal(err_msg("ThreadCritical::ThreadCritical: mutex_lock failed (%s)",

    52                       strerror(errno)));

    53       assert(global_mut_count == 0, "must have clean count");

    54       assert(global_mut_owner == -1, "must have clean owner");

    55     }

    56     global_mut_owner = owner;

    57     ++global_mut_count;

    58   } else {

    59     assert (Threads::number_of_threads() == 0, "valid only during initialization");

    60   }

    61 }

    63 ThreadCritical::~ThreadCritical() {

    64   if (initialized) {

    65     assert(global_mut_owner == thr_self(), "must have correct owner");

    66     assert(global_mut_count > 0, "must have correct count");

    67     --global_mut_count;

    68     if (global_mut_count == 0) {

    69       global_mut_owner = -1;

    70       if (os::Solaris::mutex_unlock(&global_mut))

    71         fatal(err_msg("ThreadCritical::~ThreadCritical: mutex_unlock failed "

    72                       "(%s)", strerror(errno)));

    73     }

    74   } else {

    75     assert (Threads::number_of_threads() == 0, "valid only during initialization");

    76   }

    77 }

    79 void ThreadCritical::initialize() {

    80   // This method is called at the end of os::init(). Until

    81   // then, we don't do real locking.

    82   initialized = true;

    83 }

    85 void ThreadCritical::release() {

    86 }

src/os/solaris/vm/threadCritical_solaris.cpp@754c24457b20

src/os/solaris/vm/threadCritical_solaris.cpp

Mercurial > jdk8-mips64-public > hotspot / file revision

src/os/solaris/vm/threadCritical_solaris.cpp@754c24457b20

src/os/solaris/vm/threadCritical_solaris.cpp