Stringify ArmCPUDetect.cpp.
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Lioncash
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@ -2,9 +2,12 @@
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include <fstream>
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#include <sstream>
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#include <string>
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#include "Common/Common.h"
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#include "Common/CPUDetect.h"
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#include "Common/FileUtil.h"
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#include "Common/StringUtil.h"
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// Only Linux platforms have /proc/cpuinfo
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@ -13,51 +16,47 @@ const char procfile[] = "/proc/cpuinfo";
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std::string GetCPUString()
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{
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const char marker[] = "Hardware\t: ";
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char *cpu_string = nullptr;
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// Count the number of processor lines in /proc/cpuinfo
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char buf[1024];
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const std::string marker = "Hardware\t: ";
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std::string cpu_string = "Unknown";
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File::IOFile file(procfile, "r");
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auto const fp = file.GetHandle();
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if (!fp)
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return 0;
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std::string line;
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std::ifstream file(procfile);
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while (fgets(buf, sizeof(buf), fp))
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if (!file)
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return cpu_string;
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while (std::getline(file, line))
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{
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if (strncmp(buf, marker, sizeof(marker) - 1))
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continue;
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cpu_string = buf + sizeof(marker) - 1;
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cpu_string = strndup(cpu_string, strlen(cpu_string) - 1); // Strip the newline
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break;
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if (line.find(marker) != std::string::npos)
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{
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cpu_string = line.substr(marker.length());
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cpu_string.pop_back(); // Drop the new-line character
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break;
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}
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}
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if (cpu_string)
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return std::string(cpu_string);
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else
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return "";
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return cpu_string;
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}
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unsigned char GetCPUImplementer()
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{
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const char marker[] = "CPU implementer\t: ";
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char *implementer_string = nullptr;
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const std::string marker = "CPU implementer\t: ";
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unsigned char implementer = 0;
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char buf[1024];
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File::IOFile file(procfile, "r");
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auto const fp = file.GetHandle();
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if (!fp)
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std::string line;
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std::ifstream file(procfile);
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if (!file)
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return 0;
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while (fgets(buf, sizeof(buf), fp))
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while (std::getline(file, line))
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{
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if (strncmp(buf, marker, sizeof(marker) - 1))
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continue;
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implementer_string = buf + sizeof(marker) - 1;
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implementer_string = strndup(implementer_string, strlen(implementer_string) - 1); // Strip the newline
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sscanf(implementer_string, "0x%02hhx", &implementer);
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free(implementer_string);
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break;
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if (line.find(marker) != std::string::npos)
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{
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line = line.substr(marker.length());
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sscanf(line.c_str(), "0x%02hhx", &implementer);
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break;
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}
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}
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return implementer;
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@ -65,51 +64,50 @@ unsigned char GetCPUImplementer()
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unsigned short GetCPUPart()
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{
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const char marker[] = "CPU part\t: ";
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char *part_string = nullptr;
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const std::string marker = "CPU part\t: ";
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unsigned short part = 0;
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char buf[1024];
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File::IOFile file(procfile, "r");
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auto const fp = file.GetHandle();
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if (!fp)
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std::string line;
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std::ifstream file(procfile);
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if (!file)
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return 0;
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while (fgets(buf, sizeof(buf), fp))
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while (std::getline(file, line))
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{
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if (strncmp(buf, marker, sizeof(marker) - 1))
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continue;
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part_string = buf + sizeof(marker) - 1;
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part_string = strndup(part_string, strlen(part_string) - 1); // Strip the newline
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sscanf(part_string, "0x%03hx", &part);
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free(part_string);
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break;
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if (line.find(marker) != std::string::npos)
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{
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line = line.substr(marker.length());
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sscanf(line.c_str(), "0x%03hx", &part);
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break;
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}
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}
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return part;
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}
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bool CheckCPUFeature(const char *feature)
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bool CheckCPUFeature(const std::string& feature)
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{
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const char marker[] = "Features\t: ";
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char buf[1024];
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const std::string marker = "Features\t: ";
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File::IOFile file(procfile, "r");
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auto const fp = file.GetHandle();
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if (!fp)
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std::string line;
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std::ifstream file(procfile);
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if (!file)
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return 0;
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while (fgets(buf, sizeof(buf), fp))
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while (std::getline(file, line))
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{
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if (strncmp(buf, marker, sizeof(marker) - 1))
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continue;
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char *featurestring = buf + sizeof(marker) - 1;
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char *token = strtok(featurestring, " ");
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while (token != nullptr)
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if (line.find(marker) != std::string::npos)
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{
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if (strstr(token, feature))
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return true;
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token = strtok(nullptr, " ");
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std::stringstream line_stream(line);
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std::string token;
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while (std::getline(line_stream, token, ' '))
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{
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if (token == feature)
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return true;
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}
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}
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}
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@ -124,20 +122,21 @@ int GetCoreCount()
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#elif defined(BLACKBERRY) || defined(IOS)
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return 2;
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#else
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const char marker[] = "processor\t: ";
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const std::string marker = "processor\t: ";
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int cores = 0;
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char buf[1024];
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File::IOFile file(procfile, "r");
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auto const fp = file.GetHandle();
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if (!fp)
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std::string line;
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std::ifstream file(procfile);
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if (!file)
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return 0;
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while (fgets(buf, sizeof(buf), fp))
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while (std::getline(file, line))
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{
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if (strncmp(buf, marker, sizeof(marker) - 1))
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continue;
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++cores;
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if (line.find(marker) != std::string::npos)
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{
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++cores;
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}
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}
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return cores;
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@ -146,7 +145,8 @@ int GetCoreCount()
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CPUInfo cpu_info;
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CPUInfo::CPUInfo() {
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CPUInfo::CPUInfo()
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{
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Detect();
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}
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@ -174,28 +174,35 @@ void CPUInfo::Detect()
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bool isVFP4 = false;
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#ifdef IOS
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isVFP3 = true;
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// Check for swift arch (VFP4`)
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#ifdef __ARM_ARCH_7S__
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isVFP4 = true;
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#endif // #ifdef __ARM_ARCH_7S__
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// Check for swift arch (VFP4`)
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#ifdef __ARM_ARCH_7S__
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isVFP4 = true;
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#endif // #ifdef __ARM_ARCH_7S__
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#elif defined(BLACKBERRY)
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isVFP3 = true;
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const char cpuInfoPath[] = "/pps/services/hw_info/inventory";
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const char marker[] = "Processor_Name::";
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const char qcCPU[] = "MSM";
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char buf[1024];
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FILE* fp;
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if (fp = fopen(cpuInfoPath, "r"))
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const std::string marker = "Processor_Name::";
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const std::string qcCPU = "MSM";
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std::string line;
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std::ifstream file(cpuInfoPath);
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if (file)
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{
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while (fgets(buf, sizeof(buf), fp))
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while (std::getline(file, line))
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{
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if (strncmp(buf, marker, sizeof(marker) - 1))
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continue;
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if (strncmp(buf + sizeof(marker) - 1, qcCPU, sizeof(qcCPU) - 1) == 0)
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isVFP4 = true;
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break;
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if (line.find(marker) != std::string::npos)
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{
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std::string first_three_chars = line.substr(marker.length(), qcCPU.length());
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if (first_three_chars == qcCPU)
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{
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isVFP4 = true;
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}
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break;
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}
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}
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fclose(fp);
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}
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#endif
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// Hardcode this for now
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@ -236,8 +243,8 @@ void CPUInfo::Detect()
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bFP = CheckCPUFeature("fp");
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bASIMD = CheckCPUFeature("asimd");
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#endif
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// On android, we build a separate library for ARMv7 so this is fine.
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// TODO: Check for ARMv7 on other platforms.
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// On android, we build a separate library for ARMv7 so this is fine.
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// TODO: Check for ARMv7 on other platforms.
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#if defined(__ARM_ARCH_7A__)
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bArmV7 = true;
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#else
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