| // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #ifndef RUNTIME_VM_CPUINFO_H_ |
| #define RUNTIME_VM_CPUINFO_H_ |
| |
| #include "platform/assert.h" |
| #include "vm/allocation.h" |
| |
| namespace dart { |
| |
| // Indices into cpuinfo field name arrays. |
| enum CpuInfoIndices { |
| kCpuInfoProcessor = 0, |
| kCpuInfoModel = 1, |
| kCpuInfoHardware = 2, |
| kCpuInfoFeatures = 3, |
| kCpuInfoArchitecture = 4, |
| kCpuInfoMax = 5, |
| }; |
| |
| // For Intel architectures, the method to use to get CPU information. |
| enum CpuInfoMethod { |
| // Use the cpuid instruction. |
| kCpuInfoCpuId, |
| |
| // Use system calls. |
| kCpuInfoSystem, |
| |
| // Use whatever the default is for a particular OS: |
| // Linux, Windows -> CpuId, |
| // Android, MacOS -> System. |
| kCpuInfoDefault, |
| }; |
| |
| class CpuInfo : public AllStatic { |
| public: |
| static void Init(); |
| static void Cleanup(); |
| |
| static const char* FieldName(CpuInfoIndices idx) { |
| ASSERT((idx >= 0) && (idx < kCpuInfoMax)); |
| return fields_[idx]; |
| } |
| |
| // Returns true if the cpuinfo field contains the string. |
| static bool FieldContains(CpuInfoIndices idx, const char* search_string); |
| |
| // Returns true if the cpuinfo field [field] exists and is non-empty. |
| static bool HasField(const char* field); |
| |
| // Returns the field describing the CPU model. Caller is responsible for |
| // freeing the result. |
| static const char* GetCpuModel() { |
| if (HasField(FieldName(kCpuInfoHardware))) { |
| return ExtractField(kCpuInfoHardware); |
| } else { |
| return strdup("Unknown"); |
| } |
| } |
| |
| private: |
| // Returns the field. Caller is responsible for freeing the result. |
| static const char* ExtractField(CpuInfoIndices idx); |
| |
| // The method to use to acquire info about the CPU. |
| static CpuInfoMethod method_; |
| |
| // Cpuinfo field names. |
| static const char* fields_[kCpuInfoMax]; |
| }; |
| |
| } // namespace dart |
| |
| #endif // RUNTIME_VM_CPUINFO_H_ |