diff options
Diffstat (limited to 'src/3rdparty/angle/src/common/system_utils_linux.cpp')
-rw-r--r-- | src/3rdparty/angle/src/common/system_utils_linux.cpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/common/system_utils_linux.cpp b/src/3rdparty/angle/src/common/system_utils_linux.cpp new file mode 100644 index 0000000000..98ab4cce6d --- /dev/null +++ b/src/3rdparty/angle/src/common/system_utils_linux.cpp @@ -0,0 +1,89 @@ +// +// Copyright (c) 2015 The ANGLE Project Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. +// + +// system_utils_linux.cpp: Implementation of OS-specific functions for Linux + +#include "system_utils.h" + +#include <sys/stat.h> +#include <sys/time.h> +#include <sys/types.h> +#include <unistd.h> + +#include <array> + +namespace angle +{ + +namespace +{ + +std::string GetExecutablePathImpl() +{ + // We cannot use lstat to get the size of /proc/self/exe as it always returns 0 + // so we just use a big buffer and hope the path fits in it. + char path[4096]; + + ssize_t result = readlink("/proc/self/exe", path, sizeof(path) - 1); + if (result < 0 || static_cast<size_t>(result) >= sizeof(path) - 1) + { + return ""; + } + + path[result] = '\0'; + return path; +} + +std::string GetExecutableDirectoryImpl() +{ + std::string executablePath = GetExecutablePath(); + size_t lastPathSepLoc = executablePath.find_last_of("/"); + return (lastPathSepLoc != std::string::npos) ? executablePath.substr(0, lastPathSepLoc) : ""; +} + +} // anonymous namespace + +const char *GetExecutablePath() +{ + // TODO(jmadill): Make global static string thread-safe. + const static std::string &exePath = GetExecutablePathImpl(); + return exePath.c_str(); +} + +const char *GetExecutableDirectory() +{ + // TODO(jmadill): Make global static string thread-safe. + const static std::string &exeDir = GetExecutableDirectoryImpl(); + return exeDir.c_str(); +} + +const char *GetSharedLibraryExtension() +{ + return "so"; +} + +Optional<std::string> GetCWD() +{ + std::array<char, 4096> pathBuf; + char *result = getcwd(pathBuf.data(), pathBuf.size()); + if (result == nullptr) + { + return Optional<std::string>::Invalid(); + } + return std::string(pathBuf.data()); +} + +bool SetCWD(const char *dirName) +{ + return (chdir(dirName) == 0); +} + +bool SetEnvironmentVar(const char *variableName, const char *value) +{ + return (setenv(variableName, value, 1) == 0); +} + +} // namespace angle |