src/util/SystemUtil.cpp
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| 1 | // Copyright (c) 2021-2026 ChilliBits. All rights reserved. | ||
| 2 | |||
| 3 | #include "SystemUtil.h" | ||
| 4 | |||
| 5 | #include <array> | ||
| 6 | #include <iostream> // IWYU pragma: keep (usage in Windows-only code) | ||
| 7 | #include <vector> | ||
| 8 | #if OS_UNIX | ||
| 9 | #include <spawn.h> | ||
| 10 | #include <sys/wait.h> | ||
| 11 | #include <unistd.h> | ||
| 12 | #if OS_MACOS | ||
| 13 | extern char **environ; | ||
| 14 | #endif | ||
| 15 | #elif OS_WINDOWS | ||
| 16 | #include <process.h> | ||
| 17 | #include <windows.h> | ||
| 18 | #else | ||
| 19 | #error "Unsupported platform" | ||
| 20 | #endif | ||
| 21 | |||
| 22 | #include <driver/Driver.h> | ||
| 23 | #include <exception/CompilerError.h> | ||
| 24 | #include <exception/LinkerError.h> | ||
| 25 | |||
| 26 | #include <llvm/TargetParser/Triple.h> | ||
| 27 | |||
| 28 | namespace spice::compiler { | ||
| 29 | |||
| 30 | /** | ||
| 31 | * Execute external command. Used to execute compiled binaries | ||
| 32 | * | ||
| 33 | * @param command Command to execute | ||
| 34 | * @param redirectStdErrToStdOut Redirect StdErr to StdOut | ||
| 35 | * @return Result struct | ||
| 36 | */ | ||
| 37 | 640 | ExecResult SystemUtil::exec(const std::string &command, bool redirectStdErrToStdOut) { | |
| 38 | #if OS_UNIX | ||
| 39 |
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640 | std::string redirectedCommand = command; |
| 40 |
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640 | if (redirectStdErrToStdOut) |
| 41 |
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306 | redirectedCommand += " 2>&1"; // Redirect stderr to stdout |
| 42 |
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640 | FILE *pipe = popen(redirectedCommand.c_str(), "r"); |
| 43 | #elif OS_WINDOWS | ||
| 44 | std::string redirectedCommand = command; | ||
| 45 | if (redirectStdErrToStdOut) | ||
| 46 | redirectedCommand = "\"" + command + " 2>&1\""; // Redirect stderr to stdout | ||
| 47 | FILE *pipe = _popen(redirectedCommand.c_str(), "r"); | ||
| 48 | #else | ||
| 49 | #error "Unsupported platform" | ||
| 50 | #endif | ||
| 51 | |||
| 52 | − | if (!pipe) // GCOV_EXCL_LINE | |
| 53 | − | throw CompilerError(IO_ERROR, "Failed to execute command: " + command); // GCOV_EXCL_LINE | |
| 54 | |||
| 55 | 640 | std::array<char, 128> buffer{}; | |
| 56 |
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640 | std::stringstream result; |
| 57 |
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7657 | while (fgets(buffer.data(), buffer.size(), pipe) != nullptr) |
| 58 |
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6377 | result << buffer.data(); |
| 59 | |||
| 60 |
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640 | const int status = pclose(pipe); |
| 61 | 1280 | return {result.str(), transformStatusToExitCode(status)}; | |
| 62 |
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1280 | } |
| 63 | |||
| 64 | /** | ||
| 65 | * Execute an external binary, inheriting the parent's standard streams. | ||
| 66 | * Unlike exec(), this does not capture the child's output: its stdin, stdout and stderr are | ||
| 67 | * connected directly to ours, so the program behaves as if invoked from the terminal. | ||
| 68 | * | ||
| 69 | * @param executablePath Path to the executable to run | ||
| 70 | * @return Exit code of the executed binary | ||
| 71 | */ | ||
| 72 | ✗ | int SystemUtil::run(const std::string &executablePath) { | |
| 73 | #if OS_UNIX | ||
| 74 | // No file actions are given, so the child inherits our stdin/stdout/stderr | ||
| 75 | ✗ | const char *argv[] = {executablePath.c_str(), nullptr}; | |
| 76 | pid_t pid; | ||
| 77 | ✗ | if (posix_spawn(&pid, executablePath.c_str(), nullptr, nullptr, const_cast<char *const *>(argv), environ) != 0) | |
| 78 | − | throw CompilerError(IO_ERROR, "Failed to execute: " + executablePath); // GCOV_EXCL_LINE | |
| 79 | int status; | ||
| 80 | ✗ | if (waitpid(pid, &status, 0) == -1) | |
| 81 | − | throw CompilerError(IO_ERROR, "Failed to wait for: " + executablePath); // GCOV_EXCL_LINE | |
| 82 | ✗ | return transformStatusToExitCode(status); | |
| 83 | #elif OS_WINDOWS | ||
| 84 | // _P_WAIT inherits the parent's standard streams and returns the child's exit code | ||
| 85 | const intptr_t exitCode = _spawnl(_P_WAIT, executablePath.c_str(), executablePath.c_str(), nullptr); | ||
| 86 | if (exitCode == -1) | ||
| 87 | throw CompilerError(IO_ERROR, "Failed to execute: " + executablePath); // GCOV_EXCL_LINE | ||
| 88 | return static_cast<int>(exitCode); | ||
| 89 | #else | ||
| 90 | #error "Unsupported platform" | ||
| 91 | #endif | ||
| 92 | } | ||
| 93 | |||
| 94 | /** | ||
| 95 | * Checks if a certain command is available on the computer | ||
| 96 | * | ||
| 97 | * @param cmd Command to search for | ||
| 98 | * @return Present or not | ||
| 99 | */ | ||
| 100 | 3 | bool SystemUtil::isCommandAvailable(const std::string &cmd) { | |
| 101 | #if OS_UNIX | ||
| 102 |
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3 | const std::string checkCmd = "which " + cmd + " > /dev/null 2>&1"; |
| 103 | #elif OS_WINDOWS | ||
| 104 | const std::string checkCmd = "where " + cmd + " > nul 2>&1"; | ||
| 105 | #else | ||
| 106 | #error "Unsupported platform" | ||
| 107 | #endif | ||
| 108 |
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3 | const int status = std::system(checkCmd.c_str()); |
| 109 | 6 | return transformStatusToExitCode(status) == EXIT_SUCCESS; | |
| 110 | 3 | } | |
| 111 | |||
| 112 | /** | ||
| 113 | * Checks if Graphviz is installed on the system | ||
| 114 | * | ||
| 115 | * @return Present or not | ||
| 116 | */ | ||
| 117 |
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3 | bool SystemUtil::isGraphvizInstalled() { return isCommandAvailable("dot"); } |
| 118 | |||
| 119 | /** | ||
| 120 | * Search for a supported linker invoker on the system and return the executable name or path. | ||
| 121 | * This function may throw a LinkerError if no linker invoker is found. | ||
| 122 | * | ||
| 123 | * @return Name and path to the linker invoker executable | ||
| 124 | */ | ||
| 125 | 320 | ExternalBinaryFinderResult SystemUtil::findLinkerInvoker() { | |
| 126 | #if OS_UNIX | ||
| 127 |
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320 | for (const char *linkerInvokerName : {"clang", "gcc"}) |
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640 | for (const std::string path : {"/usr/bin/", "/usr/local/bin/", "/bin/"}) |
| 129 |
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320 | if (std::filesystem::exists(path + linkerInvokerName)) |
| 130 |
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640 | return ExternalBinaryFinderResult{linkerInvokerName, path + linkerInvokerName}; |
| 131 | #elif OS_WINDOWS | ||
| 132 | for (const char *linkerInvokerName : {"clang", "gcc"}) | ||
| 133 | if (isCommandAvailable(std::string(linkerInvokerName) + " -v")) | ||
| 134 | return ExternalBinaryFinderResult{linkerInvokerName, linkerInvokerName}; | ||
| 135 | #else | ||
| 136 | #error "Unsupported platform" | ||
| 137 | #endif | ||
| 138 | − | const auto msg = "No supported linker invoker was found on the system. Supported are: clang and gcc"; // LCOV_EXCL_LINE | |
| 139 | − | throw LinkerError(LINKER_INVOKER_NOT_FOUND, msg); // LCOV_EXCL_LINE | |
| 140 | } | ||
| 141 | |||
| 142 | /** | ||
| 143 | * Search for a supported linker on the system and return the executable name or path. | ||
| 144 | * This function may throw a LinkerError if no linker is found. | ||
| 145 | * | ||
| 146 | * @param cliOptions Command line options | ||
| 147 | * @return Name and path to the linker executable | ||
| 148 | */ | ||
| 149 | 320 | ExternalBinaryFinderResult SystemUtil::findLinker([[maybe_unused]] const CliOptions &cliOptions) { | |
| 150 | #if OS_UNIX | ||
| 151 | 320 | std::vector<const char *> linkerList; | |
| 152 |
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320 | linkerList.reserve(5); |
| 153 | // mold does only support linking for unix and darwin | ||
| 154 |
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320 | if (!cliOptions.targetTriple.isOSWindows()) |
| 155 |
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320 | linkerList.push_back("mold"); |
| 156 |
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320 | linkerList.push_back("ld.lld"); |
| 157 |
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320 | linkerList.push_back("ld64.ddl"); |
| 158 |
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320 | linkerList.push_back("gold"); |
| 159 |
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320 | linkerList.push_back("ld"); |
| 160 | |||
| 161 |
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640 | for (const char *linkerName : linkerList) |
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1280 | for (const std::string path : {"/usr/bin/", "/usr/local/bin/", "/bin/"}) |
| 163 |
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640 | if (std::filesystem::exists(path + linkerName)) |
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960 | return ExternalBinaryFinderResult{linkerName, path + linkerName}; |
| 165 | #elif OS_WINDOWS | ||
| 166 | for (const char *linkerName : {"lld", "ld"}) | ||
| 167 | if (isCommandAvailable(std::string(linkerName) + " -v")) | ||
| 168 | return ExternalBinaryFinderResult{linkerName, linkerName}; | ||
| 169 | #else | ||
| 170 | #error "Unsupported platform" | ||
| 171 | #endif | ||
| 172 | − | const auto msg = "No supported linker was found on the system. Supported are: mold, lld, gold and ld"; // LCOV_EXCL_LINE | |
| 173 | − | throw LinkerError(LINKER_NOT_FOUND, msg); // LCOV_EXCL_LINE | |
| 174 | 320 | } | |
| 175 | |||
| 176 | /** | ||
| 177 | * Search for a supported archiver on the system and return the executable name or path. | ||
| 178 | * This function may throw a LinkerError if no archiver is found. | ||
| 179 | * | ||
| 180 | * @return Name and path to the archiver executable | ||
| 181 | */ | ||
| 182 | ✗ | ExternalBinaryFinderResult SystemUtil::findArchiver() { | |
| 183 | #if OS_UNIX | ||
| 184 | ✗ | for (const char *archiverName : {"llvm-ar", "gcc-ar", "ar"}) | |
| 185 | ✗ | for (const std::string path : {"/usr/bin/", "/usr/local/bin/", "/bin/"}) | |
| 186 | ✗ | if (std::filesystem::exists(path + archiverName)) | |
| 187 | ✗ | return ExternalBinaryFinderResult{archiverName, path + archiverName}; | |
| 188 | #elif OS_WINDOWS | ||
| 189 | for (const char *archiverName : {"llvm-lib", "lib"}) | ||
| 190 | if (isCommandAvailable(std::string(archiverName) + " -v")) | ||
| 191 | return ExternalBinaryFinderResult{archiverName, archiverName}; | ||
| 192 | #else | ||
| 193 | #error "Unsupported platform" | ||
| 194 | #endif | ||
| 195 | − | const auto msg = "No supported archiver was found on the system. Supported are: llvm-ar and ar"; // LCOV_EXCL_LINE | |
| 196 | − | throw LinkerError(ARCHIVER_NOT_FOUND, msg); // LCOV_EXCL_LINE | |
| 197 | } | ||
| 198 | |||
| 199 | /** | ||
| 200 | * Retrieve the file extension of the produced output file, depending on target container format and target OS | ||
| 201 | * | ||
| 202 | * @param cliOptions Command line options | ||
| 203 | * @param outputContainer Output container | ||
| 204 | * @return File extension | ||
| 205 | */ | ||
| 206 | 929 | const char *SystemUtil::getOutputFileExtension(const CliOptions &cliOptions, OutputContainer outputContainer) { | |
| 207 | static constexpr auto OUTPUT_CONTAINER_COUNT = static_cast<size_t>(OutputContainer::MAX); | ||
| 208 | static constexpr std::array<const char *, OUTPUT_CONTAINER_COUNT> OC_EXT_MAP_WASM = {"wasm", "o", "a", "so"}; | ||
| 209 | static constexpr std::array<const char *, OUTPUT_CONTAINER_COUNT> OC_EXT_MAP_MACOS = {"", "o", "a", "dylib"}; | ||
| 210 | static constexpr std::array<const char *, OUTPUT_CONTAINER_COUNT> OC_EXT_MAP_WINDOWS = {"exe", "obj", "lib", "dll"}; | ||
| 211 | static constexpr std::array<const char *, OUTPUT_CONTAINER_COUNT> OC_EXT_MAP_LINUX = {"", "o", "a", "so"}; | ||
| 212 | |||
| 213 | 929 | const auto outputContainerCasted = static_cast<uint8_t>(outputContainer); | |
| 214 |
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929 | if (cliOptions.targetTriple.isWasm()) |
| 215 | 1 | return OC_EXT_MAP_WASM[outputContainerCasted]; | |
| 216 |
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928 | if (cliOptions.targetTriple.isOSDarwin()) |
| 217 | 1 | return OC_EXT_MAP_MACOS[outputContainerCasted]; | |
| 218 |
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927 | if (cliOptions.targetTriple.isOSWindows()) |
| 219 | 2 | return OC_EXT_MAP_WINDOWS[outputContainerCasted]; | |
| 220 | 925 | return OC_EXT_MAP_LINUX[outputContainerCasted]; | |
| 221 | } | ||
| 222 | |||
| 223 | /** | ||
| 224 | * Retrieve the dir, where the standard library lives. | ||
| 225 | * Returns an empty string if the std was not found. | ||
| 226 | * | ||
| 227 | * @return Std directory | ||
| 228 | */ | ||
| 229 | 2287 | std::filesystem::path SystemUtil::getStdDir() { | |
| 230 | #if OS_UNIX | ||
| 231 |
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2287 | if (exists(std::filesystem::path("/usr/lib/spice/std/"))) |
| 232 | ✗ | return "/usr/lib/spice/std/"; | |
| 233 | #endif | ||
| 234 |
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2287 | if (std::getenv("SPICE_STD_DIR")) |
| 235 |
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2287 | if (const std::filesystem::path stdPath(std::getenv("SPICE_STD_DIR")); exists(stdPath)) |
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2287 | return stdPath; |
| 237 | − | const auto errMsg = "Standard library could not be found. Check if the env var SPICE_STD_DIR exists"; // GCOV_EXCL_LINE | |
| 238 | − | throw CompilerError(STD_NOT_FOUND, errMsg); // GCOV_EXCL_LINE | |
| 239 | } | ||
| 240 | |||
| 241 | /** | ||
| 242 | * Retrieve the dir, where the bootstrap compiler lives. | ||
| 243 | * Returns an empty string if the bootstrap compiler was not found. | ||
| 244 | * | ||
| 245 | * @return | ||
| 246 | */ | ||
| 247 | 797 | std::filesystem::path SystemUtil::getBootstrapDir() { | |
| 248 |
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797 | if (std::getenv("SPICE_BOOTSTRAP_DIR")) { |
| 249 |
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797 | if (const std::filesystem::path stdPath(std::getenv("SPICE_BOOTSTRAP_DIR")); exists(stdPath)) |
| 250 | 1594 | return stdPath; | |
| 251 | } | ||
| 252 | − | const auto errMsg = "Bootstrap compiler could not be found. Check if the env var SPICE_BOOTSTRAP_DIR exists"; // GCOV_EXCL_LINE | |
| 253 | − | throw CompilerError(BOOTSTRAP_NOT_FOUND, errMsg); // GCOV_EXCL_LINE | |
| 254 | } | ||
| 255 | |||
| 256 | /** | ||
| 257 | * Retrieve the dir, where output binaries should go when installing them | ||
| 258 | * | ||
| 259 | * @return Installation directory | ||
| 260 | */ | ||
| 261 | 2 | std::filesystem::path SystemUtil::getSpiceBinDir() { | |
| 262 | #if OS_UNIX | ||
| 263 | 2 | return "/usr/local/bin/"; | |
| 264 | #elif OS_WINDOWS | ||
| 265 | const char *userProfile = std::getenv("USERPROFILE"); | ||
| 266 | assert(userProfile != nullptr && strlen(userProfile) > 0); | ||
| 267 | return std::filesystem::path(userProfile) / "spice" / "bin"; | ||
| 268 | #else | ||
| 269 | #error "Unsupported platform" | ||
| 270 | #endif | ||
| 271 | } | ||
| 272 | |||
| 273 | /** | ||
| 274 | * Get the memory page size of the current system | ||
| 275 | * | ||
| 276 | * @return Page size in bytes | ||
| 277 | */ | ||
| 278 | 566 | size_t SystemUtil::getSystemPageSize() { | |
| 279 | #if OS_UNIX | ||
| 280 | 566 | return static_cast<size_t>(sysconf(_SC_PAGESIZE)); | |
| 281 | #elif OS_WINDOWS | ||
| 282 | SYSTEM_INFO si; | ||
| 283 | GetSystemInfo(&si); | ||
| 284 | return static_cast<size_t>(si.dwPageSize); | ||
| 285 | #else | ||
| 286 | #error "Unsupported platform" | ||
| 287 | #endif | ||
| 288 | } | ||
| 289 | |||
| 290 | /** | ||
| 291 | * Transform pclose status to process exit code. | ||
| 292 | * The implementation is OS dependent. | ||
| 293 | * | ||
| 294 | * @param status Result of pclose | ||
| 295 | * @return Process exit code | ||
| 296 | */ | ||
| 297 | 643 | int SystemUtil::transformStatusToExitCode(int status) { | |
| 298 | #if OS_UNIX | ||
| 299 | // Invalid status -> invalid exit code | ||
| 300 |
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643 | if (status == -1) |
| 301 | ✗ | return -1; | |
| 302 | // process terminated by signal | ||
| 303 |
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643 | if (WIFSIGNALED(status)) |
| 304 | ✗ | return 128 + WTERMSIG(status); | |
| 305 | // Process terminated normally | ||
| 306 |
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643 | assert(WIFEXITED(status)); |
| 307 | 643 | return WEXITSTATUS(status); | |
| 308 | #elif OS_WINDOWS | ||
| 309 | return status; | ||
| 310 | #else | ||
| 311 | #error "Unsupported platform" | ||
| 312 | #endif | ||
| 313 | } | ||
| 314 | |||
| 315 | } // namespace spice::compiler | ||
| 316 |