Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/runtime/os.cpp
src/share/vm/runtime/os.cpp
- changeset 8661
- 27ae9bbef86a
- parent 8329
- d2dd79a4fd69
- child 8856
- ac27a9c85bea
- child 9301
- d47844b56aaf
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| 8659:c70ebf41026a | 8661:27ae9bbef86a |
|---|---|
| 1 /* | 1 /* |
| 2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved. |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | 4 * |
| 5 * This code is free software; you can redistribute it and/or modify it | 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 | 6 * under the terms of the GNU General Public License version 2 only, as |
| 7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
| 76 address os::_polling_page = NULL; | 76 address os::_polling_page = NULL; |
| 77 volatile int32_t* os::_mem_serialize_page = NULL; | 77 volatile int32_t* os::_mem_serialize_page = NULL; |
| 78 uintptr_t os::_serialize_page_mask = 0; | 78 uintptr_t os::_serialize_page_mask = 0; |
| 79 long os::_rand_seed = 1; | 79 long os::_rand_seed = 1; |
| 80 int os::_processor_count = 0; | 80 int os::_processor_count = 0; |
| 81 int os::_initial_active_processor_count = 0; | |
| 81 size_t os::_page_sizes[os::page_sizes_max]; | 82 size_t os::_page_sizes[os::page_sizes_max]; |
| 82 | 83 |
| 83 #ifndef PRODUCT | 84 #ifndef PRODUCT |
| 84 julong os::num_mallocs = 0; // # of calls to malloc/realloc | 85 julong os::num_mallocs = 0; // # of calls to malloc/realloc |
| 85 julong os::alloc_bytes = 0; // # of bytes allocated | 86 julong os::alloc_bytes = 0; // # of bytes allocated |
| 320 } | 321 } |
| 321 } | 322 } |
| 322 } | 323 } |
| 323 | 324 |
| 324 void os::init_before_ergo() { | 325 void os::init_before_ergo() { |
| 326 initialize_initial_active_processor_count(); | |
| 325 // We need to initialize large page support here because ergonomics takes some | 327 // We need to initialize large page support here because ergonomics takes some |
| 326 // decisions depending on large page support and the calculated large page size. | 328 // decisions depending on large page support and the calculated large page size. |
| 327 large_page_init(); | 329 large_page_init(); |
| 328 | 330 |
| 329 // VM version initialization identifies some characteristics of the | 331 // VM version initialization identifies some characteristics of the |
| 833 void os::print_cpu_info(outputStream* st) { | 835 void os::print_cpu_info(outputStream* st) { |
| 834 // cpu | 836 // cpu |
| 835 st->print("CPU:"); | 837 st->print("CPU:"); |
| 836 st->print("total %d", os::processor_count()); | 838 st->print("total %d", os::processor_count()); |
| 837 // It's not safe to query number of active processors after crash | 839 // It's not safe to query number of active processors after crash |
| 838 // st->print("(active %d)", os::active_processor_count()); | 840 // st->print("(active %d)", os::active_processor_count()); but we can |
| 841 // print the initial number of active processors. | |
| 842 // We access the raw value here because the assert in the accessor will | |
| 843 // fail if the crash occurs before initialization of this value. | |
| 844 st->print(" (initial active %d)", _initial_active_processor_count); | |
| 839 st->print(" %s", VM_Version::cpu_features()); | 845 st->print(" %s", VM_Version::cpu_features()); |
| 840 st->cr(); | 846 st->cr(); |
| 841 pd_print_cpu_info(st); | 847 pd_print_cpu_info(st); |
| 842 } | 848 } |
| 843 | 849 |
| 1416 } | 1422 } |
| 1417 } | 1423 } |
| 1418 return result; | 1424 return result; |
| 1419 } | 1425 } |
| 1420 | 1426 |
| 1427 void os::initialize_initial_active_processor_count() { | |
| 1428 assert(_initial_active_processor_count == 0, "Initial active processor count already set."); | |
| 1429 _initial_active_processor_count = active_processor_count(); | |
| 1430 } | |
| 1431 | |
| 1421 void os::SuspendedThreadTask::run() { | 1432 void os::SuspendedThreadTask::run() { |
| 1422 assert(Threads_lock->owned_by_self() || (_thread == VMThread::vm_thread()), "must have threads lock to call this"); | 1433 assert(Threads_lock->owned_by_self() || (_thread == VMThread::vm_thread()), "must have threads lock to call this"); |
| 1423 internal_do_task(); | 1434 internal_do_task(); |
| 1424 _done = true; | 1435 _done = true; |
| 1425 } | 1436 } |
