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// 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 "bin/builtin.h"
#include "platform/globals.h"
namespace dart {
namespace bin {
class Platform {
// 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();
// Returns the architecture name of the processor the VM is running on
// (ia32, x64, arm, arm64, or mips).
static const char* HostArchitecture() {
#if defined(HOST_ARCH_ARM)
return "arm";
#elif defined(HOST_ARCH_ARM64)
return "arm64";
#elif defined(HOST_ARCH_IA32)
return "ia32";
#elif defined(HOST_ARCH_MIPS)
return "mips";
#elif defined(HOST_ARCH_X64)
return "x64";
#error Architecture detection failed.
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();
// Stores the executable name.
static void SetExecutableName(const char* executable_name) {
executable_name_ = executable_name;
static const char* GetExecutableName() { return executable_name_; }
static const char* GetResolvedExecutableName() {
if (resolved_executable_name_ == NULL) {
// Try to resolve the executable path using platform specific APIs.
const char* resolved_name = Platform::ResolveExecutablePath();
if (resolved_name != NULL) {
resolved_executable_name_ = strdup(resolved_name);
return resolved_executable_name_;
// 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 DART_NORETURN void Exit(int exit_code);
// The path to the executable.
static const char* executable_name_;
// The path to the resolved executable.
static char* resolved_executable_name_;
static int script_index_;
static char** argv_; // VM flags are argv_[1 ... script_index_ - 1]
} // namespace bin
} // namespace dart