Mercurial > hg > graal-jvmci-8
view src/os_cpu/linux_sparc/vm/vm_version_linux_sparc.cpp @ 23985:05922ce51c5e
Restore extra level of weakness in the ResolvedJavaType cache
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Mon, 23 Jan 2017 15:50:05 -0800 |
parents | 7985a33bac9c |
children |
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/* * Copyright (c) 2006, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "runtime/os.hpp" #include "vm_version_sparc.hpp" static bool cpuinfo_field_contains(const char* field, const char* value) { char line[1024]; bool rv = false; FILE* fp = fopen("/proc/cpuinfo", "r"); if (fp == NULL) { return rv; } while (fgets(line, sizeof(line), fp) != NULL) { assert(strlen(line) < sizeof(line) - 1, "buffer line[1024] is too small."); if (strncmp(line, field, strlen(field)) == 0) { if (strstr(line, value) != NULL) { rv = true; } break; } } fclose(fp); return rv; } static bool detect_niagara() { return cpuinfo_field_contains("cpu", "Niagara"); } static bool detect_M_family() { return cpuinfo_field_contains("cpu", "SPARC-M"); } static bool detect_blkinit() { return cpuinfo_field_contains("cpucaps", "blkinit"); } int VM_Version::platform_features(int features) { // Default to generic v9 features = generic_v9_m; if (detect_niagara()) { NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Detected Linux on Niagara");) features = niagara1_m | T_family_m; } if (detect_M_family()) { NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Detected Linux on M family");) features = sun4v_m | generic_v9_m | M_family_m | T_family_m; } if (detect_blkinit()) { features |= blk_init_instructions_m; } return features; }