| // 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. |
| |
| #ifndef RUNTIME_BIN_PLATFORM_H_ |
| #define RUNTIME_BIN_PLATFORM_H_ |
| |
| #include "bin/builtin.h" |
| |
| #include "platform/atomic.h" |
| #include "platform/globals.h" |
| #include "platform/utils.h" |
| |
| #if defined(DART_HOST_OS_MACOS) |
| #include "bin/platform_macos.h" |
| #endif // defined(DART_HOST_OS_MACOS) |
| |
| namespace dart { |
| namespace bin { |
| |
| class Platform { |
| public: |
| // Perform platform specific initialization. |
| static bool Initialize(); |
| |
| // Returns the number of processors on the machine. |
| static int NumberOfProcessors(); |
| |
| // Returns a string representing the operating system ("linux", |
| // "macos", "windows", or "android"). The returned string should not be |
| // deallocated by the caller. |
| static const char* OperatingSystem() { return kHostOperatingSystemName; } |
| |
| // Returns a string representing the version of the operating system. The |
| // format of the string is determined by the platform. The returned string |
| // should not be deallocated by the caller. |
| static const char* OperatingSystemVersion(); |
| |
| // Returns the architecture name of the processor the VM is running on |
| // (ia32, x64, arm, or arm64). |
| static const char* HostArchitecture() { return kHostArchitectureName; } |
| |
| static const char* LibraryPrefix(); |
| |
| // Returns a string representing the operating system's shared library |
| // extension (e.g. 'so', 'dll', ...). The returned string should not be |
| // deallocated by the caller. |
| static const char* LibraryExtension(); |
| |
| // Extracts the local hostname. |
| static bool LocalHostname(char* buffer, intptr_t buffer_length); |
| |
| static const char* LocaleName(); |
| |
| // Extracts the environment variables for the current process. The array of |
| // strings is Dart_ScopeAllocated. The number of elements in the array is |
| // returned in the count argument. |
| static char** Environment(intptr_t* count); |
| |
| static const char* ResolveExecutablePath(); |
| |
| // This has the same effect as calling ResolveExecutablePath except that |
| // Dart_ScopeAllocate is not called and that the result goes into the given |
| // parameters. |
| // WARNING: On Fuchsia it returns -1, i.e. doesn't work. |
| // Note that `result` should be pre-allocated with size `result_size`. |
| // The return-value is the length read into `result` or -1 on failure. |
| static intptr_t ResolveExecutablePathInto(char* result, size_t result_size); |
| |
| // Stores the executable name. |
| static void SetExecutableName(const char* executable_name) { |
| executable_name_ = executable_name; |
| } |
| static const char* GetExecutableName(); |
| static const char* GetResolvedExecutableName() { |
| if (resolved_executable_name_.load() == nullptr) { |
| // Try to resolve the executable path using platform specific APIs. |
| const char* resolved_name = Platform::ResolveExecutablePath(); |
| if (resolved_name != nullptr) { |
| char* resolved_name_copy = Utils::StrDup(resolved_name); |
| const char* expect_old_is_null = nullptr; |
| if (!resolved_executable_name_.compare_exchange_strong( |
| expect_old_is_null, resolved_name_copy)) { |
| free(resolved_name_copy); |
| } |
| } |
| } |
| return resolved_executable_name_.load(); |
| } |
| |
| // Stores and gets the flags passed to the executable. |
| static void SetExecutableArguments(int script_index, char** argv) { |
| script_index_ = script_index; |
| argv_ = argv; |
| } |
| static int GetScriptIndex() { return script_index_; } |
| static char** GetArgv() { return argv_; } |
| |
| static void SetProcessName(const char* name); |
| |
| DART_NORETURN static void Exit(int exit_code); |
| DART_NORETURN static void _Exit(int exit_code); |
| |
| static void SetCoreDumpResourceLimit(int value); |
| |
| #if defined(DART_HOST_OS_FUCHSIA) |
| static zx_handle_t GetVMEXResource(); |
| #endif |
| |
| private: |
| // The path to the executable. |
| static const char* executable_name_; |
| |
| // The path to the resolved executable. |
| // |
| // We use require-release semantics to ensure initializing stores to the |
| // string are visible when the string becomes visible. |
| static AcqRelAtomic<const char*> resolved_executable_name_; |
| |
| static int script_index_; |
| static char** argv_; // VM flags are argv_[1 ... script_index_ - 1] |
| |
| DISALLOW_ALLOCATION(); |
| DISALLOW_IMPLICIT_CONSTRUCTORS(Platform); |
| }; |
| |
| } // namespace bin |
| } // namespace dart |
| |
| #endif // RUNTIME_BIN_PLATFORM_H_ |