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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 "platform/globals.h"
#if defined(DART_HOST_OS_MACOS)
#include "bin/platform.h"
#include "bin/platform_macos.h"
#include <CoreFoundation/CoreFoundation.h>
#if !DART_HOST_OS_IOS
#include <crt_externs.h> // NOLINT
#endif // !DART_HOST_OS_IOS
#include <errno.h> // NOLINT
#include <mach-o/dyld.h>
#include <signal.h> // NOLINT
#include <sys/resource.h> // NOLINT
#include <sys/sysctl.h> // NOLINT
#include <sys/types.h> // NOLINT
#include <sys/utsname.h> // NOLINT
#include <unistd.h> // NOLINT
#include <string>
#include "bin/console.h"
#include "bin/file.h"
#include "bin/platform_macos_cocoa.h"
namespace dart {
namespace bin {
const char* Platform::executable_name_ = NULL;
int Platform::script_index_ = 1;
char** Platform::argv_ = NULL;
static void segv_handler(int signal, siginfo_t* siginfo, void* context) {
Syslog::PrintErr(
"\n===== CRASH =====\n"
"si_signo=%s(%d), si_code=%d, si_addr=%p\n",
strsignal(siginfo->si_signo), siginfo->si_signo, siginfo->si_code,
siginfo->si_addr);
Dart_DumpNativeStackTrace(context);
Dart_PrepareToAbort();
abort();
}
bool Platform::Initialize() {
// Turn off the signal handler for SIGPIPE as it causes the process
// to terminate on writing to a closed pipe. Without the signal
// handler error EPIPE is set instead.
struct sigaction act = {};
act.sa_handler = SIG_IGN;
if (sigaction(SIGPIPE, &act, 0) != 0) {
perror("Setting signal handler failed");
return false;
}
// tcsetattr raises SIGTTOU if we try to set console attributes when
// backgrounded, which suspends the process. Ignoring the signal prevents
// us from being suspended and lets us fail gracefully instead.
sigset_t signal_mask;
sigemptyset(&signal_mask);
sigaddset(&signal_mask, SIGTTOU);
if (sigprocmask(SIG_BLOCK, &signal_mask, NULL) < 0) {
perror("Setting signal handler failed");
return false;
}
act.sa_flags = SA_SIGINFO;
act.sa_sigaction = &segv_handler;
if (sigemptyset(&act.sa_mask) != 0) {
perror("sigemptyset() failed.");
return false;
}
if (sigaddset(&act.sa_mask, SIGPROF) != 0) {
perror("sigaddset() failed");
return false;
}
if (sigaction(SIGSEGV, &act, NULL) != 0) {
perror("sigaction() failed.");
return false;
}
if (sigaction(SIGBUS, &act, NULL) != 0) {
perror("sigaction() failed.");
return false;
}
if (sigaction(SIGTRAP, &act, NULL) != 0) {
perror("sigaction() failed.");
return false;
}
if (sigaction(SIGILL, &act, NULL) != 0) {
perror("sigaction() failed.");
return false;
}
return true;
}
int Platform::NumberOfProcessors() {
int32_t cpus = -1;
size_t cpus_length = sizeof(cpus);
if (sysctlbyname("hw.logicalcpu", &cpus, &cpus_length, NULL, 0) == 0) {
return cpus;
} else {
// Failed, fallback to using sysconf.
return sysconf(_SC_NPROCESSORS_ONLN);
}
}
const char* Platform::OperatingSystem() {
#if DART_HOST_OS_IOS
return "ios";
#else
return "macos";
#endif
}
const char* Platform::OperatingSystemVersion() {
std::string version(NSProcessInfoOperatingSystemVersionString());
return DartUtils::ScopedCopyCString(version.c_str());
}
const char* Platform::LibraryPrefix() {
return "lib";
}
const char* Platform::LibraryExtension() {
return "dylib";
}
static const char* GetLocaleName() {
CFLocaleRef locale = CFLocaleCopyCurrent();
CFStringRef locale_string = CFLocaleGetIdentifier(locale);
CFIndex len = CFStringGetLength(locale_string);
CFIndex max_len =
CFStringGetMaximumSizeForEncoding(len, kCFStringEncodingUTF8) + 1;
char* result = reinterpret_cast<char*>(Dart_ScopeAllocate(max_len));
ASSERT(result != NULL);
bool success =
CFStringGetCString(locale_string, result, max_len, kCFStringEncodingUTF8);
CFRelease(locale);
if (!success) {
return NULL;
}
return result;
}
static const char* GetPreferredLanguageName() {
CFArrayRef languages = CFLocaleCopyPreferredLanguages();
CFIndex languages_length = CFArrayGetCount(languages);
if (languages_length < 1) {
CFRelease(languages);
return NULL;
}
CFTypeRef item =
reinterpret_cast<CFTypeRef>(CFArrayGetValueAtIndex(languages, 0));
CFTypeID item_type = CFGetTypeID(item);
ASSERT(item_type == CFStringGetTypeID());
CFStringRef language = reinterpret_cast<CFStringRef>(item);
CFIndex len = CFStringGetLength(language);
CFIndex max_len =
CFStringGetMaximumSizeForEncoding(len, kCFStringEncodingUTF8) + 1;
char* result = reinterpret_cast<char*>(Dart_ScopeAllocate(max_len));
ASSERT(result != NULL);
bool success =
CFStringGetCString(language, result, max_len, kCFStringEncodingUTF8);
CFRelease(languages);
if (!success) {
return NULL;
}
return result;
}
const char* Platform::LocaleName() {
// First see if there is a preferred language. If not, return the
// current locale name.
const char* preferred_language = GetPreferredLanguageName();
return (preferred_language != NULL) ? preferred_language : GetLocaleName();
}
bool Platform::LocalHostname(char* buffer, intptr_t buffer_length) {
return gethostname(buffer, buffer_length) == 0;
}
char** Platform::Environment(intptr_t* count) {
#if DART_HOST_OS_IOS
// TODO(zra,chinmaygarde): On iOS, environment variables are seldom used. Wire
// this up if someone needs it. In the meantime, we return an empty array.
char** result;
result = reinterpret_cast<char**>(Dart_ScopeAllocate(1 * sizeof(*result)));
if (result == NULL) {
return NULL;
}
result[0] = NULL;
*count = 0;
return result;
#else
// Using environ directly is only safe as long as we do not
// provide access to modifying environment variables.
// On MacOS you have to do a bit of magic to get to the
// environment strings.
char** environ = *(_NSGetEnviron());
intptr_t i = 0;
char** tmp = environ;
while (*(tmp++) != NULL) {
i++;
}
*count = i;
char** result;
result = reinterpret_cast<char**>(Dart_ScopeAllocate(i * sizeof(*result)));
for (intptr_t current = 0; current < i; current++) {
result[current] = environ[current];
}
return result;
#endif
}
const char* Platform::GetExecutableName() {
return executable_name_;
}
const char* Platform::ResolveExecutablePath() {
// Get the required length of the buffer.
uint32_t path_size = 0;
if (_NSGetExecutablePath(NULL, &path_size) == 0) {
return NULL;
}
// Allocate buffer and get executable path.
char* path = DartUtils::ScopedCString(path_size);
if (_NSGetExecutablePath(path, &path_size) != 0) {
return NULL;
}
// Return the canonical path as the returned path might contain symlinks.
const char* canon_path = File::GetCanonicalPath(NULL, path);
return canon_path;
}
intptr_t Platform::ResolveExecutablePathInto(char* result, size_t result_size) {
// Get the required length of the buffer.
uint32_t path_size = 0;
if (_NSGetExecutablePath(nullptr, &path_size) == 0) {
return -1;
}
if (path_size > result_size) {
return -1;
}
if (_NSGetExecutablePath(result, &path_size) != 0) {
return -1;
}
return path_size;
}
void Platform::SetProcessName(const char* name) {}
void Platform::Exit(int exit_code) {
Console::RestoreConfig();
Dart_PrepareToAbort();
exit(exit_code);
}
void Platform::SetCoreDumpResourceLimit(int value) {
rlimit limit = {static_cast<rlim_t>(value), static_cast<rlim_t>(value)};
setrlimit(RLIMIT_CORE, &limit);
}
} // namespace bin
} // namespace dart
#endif // defined(DART_HOST_OS_MACOS)