| // Copyright (c) 2012, 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. |
| |
| #include "vm/globals.h" |
| #if defined(HOST_OS_LINUX) |
| |
| #include "vm/cpuid.h" |
| #include "vm/cpuinfo.h" |
| #include "vm/proccpuinfo.h" |
| |
| #include "platform/assert.h" |
| |
| // As with Windows, on IA32 and X64, we use the cpuid instruction. |
| // The analogous instruction is privileged on ARM, so we resort to |
| // reading from /proc/cpuinfo. |
| |
| namespace dart { |
| |
| CpuInfoMethod CpuInfo::method_ = kCpuInfoDefault; |
| const char* CpuInfo::fields_[kCpuInfoMax] = {0}; |
| |
| void CpuInfo::Init() { |
| #if defined(HOST_ARCH_IA32) || defined(HOST_ARCH_X64) |
| fields_[kCpuInfoProcessor] = "vendor_id"; |
| fields_[kCpuInfoModel] = "model name"; |
| fields_[kCpuInfoHardware] = "model name"; |
| fields_[kCpuInfoFeatures] = "flags"; |
| fields_[kCpuInfoArchitecture] = "CPU architecture"; |
| method_ = kCpuInfoCpuId; |
| CpuId::Init(); |
| #elif defined(HOST_ARCH_ARM) |
| fields_[kCpuInfoProcessor] = "Processor"; |
| fields_[kCpuInfoModel] = "model name"; |
| fields_[kCpuInfoHardware] = "Hardware"; |
| fields_[kCpuInfoFeatures] = "Features"; |
| fields_[kCpuInfoArchitecture] = "CPU architecture"; |
| method_ = kCpuInfoSystem; |
| ProcCpuInfo::Init(); |
| #elif defined(HOST_ARCH_ARM64) |
| fields_[kCpuInfoProcessor] = "Processor"; |
| fields_[kCpuInfoModel] = "CPU implementer"; |
| fields_[kCpuInfoHardware] = "CPU implementer"; |
| fields_[kCpuInfoFeatures] = "Features"; |
| fields_[kCpuInfoArchitecture] = "CPU architecture"; |
| method_ = kCpuInfoSystem; |
| ProcCpuInfo::Init(); |
| #else |
| #error Unrecognized target architecture |
| #endif |
| } |
| |
| void CpuInfo::Cleanup() { |
| if (method_ == kCpuInfoCpuId) { |
| CpuId::Cleanup(); |
| } else { |
| ASSERT(method_ == kCpuInfoSystem); |
| ProcCpuInfo::Cleanup(); |
| } |
| } |
| |
| bool CpuInfo::FieldContains(CpuInfoIndices idx, const char* search_string) { |
| if (method_ == kCpuInfoCpuId) { |
| const char* field = CpuId::field(idx); |
| bool contains = (strstr(field, search_string) != NULL); |
| free(const_cast<char*>(field)); |
| return contains; |
| } else { |
| ASSERT(method_ == kCpuInfoSystem); |
| return ProcCpuInfo::FieldContains(FieldName(idx), search_string); |
| } |
| } |
| |
| const char* CpuInfo::ExtractField(CpuInfoIndices idx) { |
| if (method_ == kCpuInfoCpuId) { |
| return CpuId::field(idx); |
| } else { |
| ASSERT(method_ == kCpuInfoSystem); |
| return ProcCpuInfo::ExtractField(FieldName(idx)); |
| } |
| } |
| |
| bool CpuInfo::HasField(const char* field) { |
| if (method_ == kCpuInfoCpuId) { |
| return (strcmp(field, fields_[kCpuInfoProcessor]) == 0) || |
| (strcmp(field, fields_[kCpuInfoModel]) == 0) || |
| (strcmp(field, fields_[kCpuInfoHardware]) == 0) || |
| (strcmp(field, fields_[kCpuInfoFeatures]) == 0); |
| } else { |
| ASSERT(method_ == kCpuInfoSystem); |
| return ProcCpuInfo::HasField(field); |
| } |
| } |
| |
| } // namespace dart |
| |
| #endif // defined(HOST_OS_LINUX) |