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07852532e3
Change-Id: I6dc02b3d9de16cc176eb97613bc0c7f0bb9b16eb Reviewed-on: https://dart-review.googlesource.com/77013 Commit-Queue: Ben Konyi <bkonyi@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Ryan Macnak <rmacnak@google.com> Auto-Submit: Ben Konyi <bkonyi@google.com>
98 lines
2.9 KiB
C++
98 lines
2.9 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/globals.h"
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#if defined(HOST_OS_LINUX)
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#include "vm/cpuid.h"
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#include "vm/cpuinfo.h"
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#include "vm/proccpuinfo.h"
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#include "platform/assert.h"
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// As with Windows, on IA32 and X64, we use the cpuid instruction.
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// The analogous instruction is privileged on ARM, so we resort to
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// reading from /proc/cpuinfo.
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namespace dart {
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CpuInfoMethod CpuInfo::method_ = kCpuInfoDefault;
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const char* CpuInfo::fields_[kCpuInfoMax] = {0};
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void CpuInfo::Init() {
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#if defined(HOST_ARCH_IA32) || defined(HOST_ARCH_X64)
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fields_[kCpuInfoProcessor] = "vendor_id";
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fields_[kCpuInfoModel] = "model name";
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fields_[kCpuInfoHardware] = "model name";
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fields_[kCpuInfoFeatures] = "flags";
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fields_[kCpuInfoArchitecture] = "CPU architecture";
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method_ = kCpuInfoCpuId;
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CpuId::Init();
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#elif defined(HOST_ARCH_ARM)
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fields_[kCpuInfoProcessor] = "Processor";
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fields_[kCpuInfoModel] = "model name";
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fields_[kCpuInfoHardware] = "Hardware";
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fields_[kCpuInfoFeatures] = "Features";
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fields_[kCpuInfoArchitecture] = "CPU architecture";
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method_ = kCpuInfoSystem;
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ProcCpuInfo::Init();
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#elif defined(HOST_ARCH_ARM64)
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fields_[kCpuInfoProcessor] = "Processor";
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fields_[kCpuInfoModel] = "CPU implementer";
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fields_[kCpuInfoHardware] = "CPU implementer";
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fields_[kCpuInfoFeatures] = "Features";
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fields_[kCpuInfoArchitecture] = "CPU architecture";
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method_ = kCpuInfoSystem;
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ProcCpuInfo::Init();
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#else
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#error Unrecognized target architecture
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#endif
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}
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void CpuInfo::Cleanup() {
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if (method_ == kCpuInfoCpuId) {
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CpuId::Cleanup();
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} else {
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ASSERT(method_ == kCpuInfoSystem);
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ProcCpuInfo::Cleanup();
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}
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}
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bool CpuInfo::FieldContains(CpuInfoIndices idx, const char* search_string) {
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if (method_ == kCpuInfoCpuId) {
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const char* field = CpuId::field(idx);
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bool contains = (strstr(field, search_string) != NULL);
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free(const_cast<char*>(field));
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return contains;
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} else {
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ASSERT(method_ == kCpuInfoSystem);
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return ProcCpuInfo::FieldContains(FieldName(idx), search_string);
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}
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}
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const char* CpuInfo::ExtractField(CpuInfoIndices idx) {
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if (method_ == kCpuInfoCpuId) {
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return CpuId::field(idx);
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} else {
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ASSERT(method_ == kCpuInfoSystem);
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return ProcCpuInfo::ExtractField(FieldName(idx));
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}
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}
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bool CpuInfo::HasField(const char* field) {
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if (method_ == kCpuInfoCpuId) {
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return (strcmp(field, fields_[kCpuInfoProcessor]) == 0) ||
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(strcmp(field, fields_[kCpuInfoModel]) == 0) ||
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(strcmp(field, fields_[kCpuInfoHardware]) == 0) ||
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(strcmp(field, fields_[kCpuInfoFeatures]) == 0);
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} else {
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ASSERT(method_ == kCpuInfoSystem);
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return ProcCpuInfo::HasField(field);
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}
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}
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} // namespace dart
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#endif // defined(HOST_OS_LINUX)
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