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// Copyright (c) 2016, 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 "vm/globals.h"
#if defined(HOST_OS_FUCHSIA)
#include "vm/os.h"
#include <errno.h>
#include <lib/fdio/util.h>
#include <zircon/process.h>
#include <zircon/syscalls.h>
#include <zircon/syscalls/object.h>
#include <zircon/types.h>
#include <fuchsia/timezone/cpp/fidl.h>
#include "lib/component/cpp/startup_context.h"
#include "lib/svc/cpp/services.h"
#include "platform/assert.h"
#include "vm/zone.h"
namespace dart {
#ifndef PRODUCT
DEFINE_FLAG(bool,
generate_perf_events_symbols,
false,
"Generate events symbols for profiling with perf");
#endif // !PRODUCT
const char* OS::Name() {
return "fuchsia";
}
intptr_t OS::ProcessId() {
return static_cast<intptr_t>(getpid());
}
// TODO(FL-98): Change this to talk to fuchsia.dart to get timezone service to
// directly get timezone.
//
// Putting this hack right now due to CP-120 as I need to remove
// component:ConnectToEnvironmentServices and this is the only thing that is
// blocking it and FL-98 will take time.
static fuchsia::timezone::TimezoneSyncPtr tz;
static zx_status_t GetLocalAndDstOffsetInSeconds(int64_t seconds_since_epoch,
int32_t* local_offset,
int32_t* dst_offset) {
zx_status_t status = tz->GetTimezoneOffsetMinutes(seconds_since_epoch * 1000,
local_offset, dst_offset);
if (status != ZX_OK) {
return status;
}
*local_offset *= 60;
*dst_offset *= 60;
return ZX_OK;
}
const char* OS::GetTimeZoneName(int64_t seconds_since_epoch) {
// TODO(abarth): Handle time zone changes.
static const auto* tz_name = new std::string([] {
fidl::StringPtr result;
tz->GetTimezoneId(&result);
return *result;
}());
return tz_name->c_str();
}
int OS::GetTimeZoneOffsetInSeconds(int64_t seconds_since_epoch) {
int32_t local_offset, dst_offset;
zx_status_t status = GetLocalAndDstOffsetInSeconds(
seconds_since_epoch, &local_offset, &dst_offset);
return status == ZX_OK ? local_offset + dst_offset : 0;
}
int OS::GetLocalTimeZoneAdjustmentInSeconds() {
int32_t local_offset, dst_offset;
zx_status_t status = GetLocalAndDstOffsetInSeconds(
zx_clock_get(ZX_CLOCK_UTC) / ZX_SEC(1), &local_offset, &dst_offset);
return status == ZX_OK ? local_offset : 0;
}
int64_t OS::GetCurrentTimeMillis() {
return GetCurrentTimeMicros() / 1000;
}
int64_t OS::GetCurrentTimeMicros() {
return zx_clock_get(ZX_CLOCK_UTC) / kNanosecondsPerMicrosecond;
}
int64_t OS::GetCurrentMonotonicTicks() {
return zx_clock_get(ZX_CLOCK_MONOTONIC);
}
int64_t OS::GetCurrentMonotonicFrequency() {
return kNanosecondsPerSecond;
}
int64_t OS::GetCurrentMonotonicMicros() {
int64_t ticks = GetCurrentMonotonicTicks();
ASSERT(GetCurrentMonotonicFrequency() == kNanosecondsPerSecond);
return ticks / kNanosecondsPerMicrosecond;
}
int64_t OS::GetCurrentThreadCPUMicros() {
return zx_clock_get(ZX_CLOCK_THREAD) / kNanosecondsPerMicrosecond;
}
// TODO(5411554): May need to hoist these architecture dependent code
// into a architecture specific file e.g: os_ia32_fuchsia.cc
intptr_t OS::ActivationFrameAlignment() {
#if defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64) || \
defined(TARGET_ARCH_ARM64)
const int kMinimumAlignment = 16;
#elif defined(TARGET_ARCH_ARM) || defined(TARGET_ARCH_DBC)
const int kMinimumAlignment = 8;
#else
#error Unsupported architecture.
#endif
intptr_t alignment = kMinimumAlignment;
// TODO(5411554): Allow overriding default stack alignment for
// testing purposes.
// Flags::DebugIsInt("stackalign", &alignment);
ASSERT(Utils::IsPowerOfTwo(alignment));
ASSERT(alignment >= kMinimumAlignment);
return alignment;
}
intptr_t OS::PreferredCodeAlignment() {
#if defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64) || \
defined(TARGET_ARCH_ARM64) || defined(TARGET_ARCH_DBC)
const int kMinimumAlignment = 32;
#elif defined(TARGET_ARCH_ARM)
const int kMinimumAlignment = 16;
#else
#error Unsupported architecture.
#endif
intptr_t alignment = kMinimumAlignment;
// TODO(5411554): Allow overriding default code alignment for
// testing purposes.
// Flags::DebugIsInt("codealign", &alignment);
ASSERT(Utils::IsPowerOfTwo(alignment));
ASSERT(alignment >= kMinimumAlignment);
ASSERT(alignment <= OS::kMaxPreferredCodeAlignment);
return alignment;
}
int OS::NumberOfAvailableProcessors() {
return sysconf(_SC_NPROCESSORS_CONF);
}
void OS::Sleep(int64_t millis) {
SleepMicros(millis * kMicrosecondsPerMillisecond);
}
void OS::SleepMicros(int64_t micros) {
zx_nanosleep(zx_deadline_after(micros * kNanosecondsPerMicrosecond));
}
void OS::DebugBreak() {
UNIMPLEMENTED();
}
DART_NOINLINE uintptr_t OS::GetProgramCounter() {
return reinterpret_cast<uintptr_t>(
__builtin_extract_return_addr(__builtin_return_address(0)));
}
void OS::Print(const char* format, ...) {
va_list args;
va_start(args, format);
VFPrint(stdout, format, args);
va_end(args);
}
void OS::VFPrint(FILE* stream, const char* format, va_list args) {
vfprintf(stream, format, args);
fflush(stream);
}
char* OS::SCreate(Zone* zone, const char* format, ...) {
va_list args;
va_start(args, format);
char* buffer = VSCreate(zone, format, args);
va_end(args);
return buffer;
}
char* OS::VSCreate(Zone* zone, const char* format, va_list args) {
// Measure.
va_list measure_args;
va_copy(measure_args, args);
intptr_t len = Utils::VSNPrint(NULL, 0, format, measure_args);
va_end(measure_args);
char* buffer;
if (zone) {
buffer = zone->Alloc<char>(len + 1);
} else {
buffer = reinterpret_cast<char*>(malloc(len + 1));
}
ASSERT(buffer != NULL);
// Print.
va_list print_args;
va_copy(print_args, args);
Utils::VSNPrint(buffer, len + 1, format, print_args);
va_end(print_args);
return buffer;
}
bool OS::StringToInt64(const char* str, int64_t* value) {
ASSERT(str != NULL && strlen(str) > 0 && value != NULL);
int32_t base = 10;
char* endptr;
int i = 0;
if (str[0] == '-') {
i = 1;
} else if (str[0] == '+') {
i = 1;
}
if ((str[i] == '0') && (str[i + 1] == 'x' || str[i + 1] == 'X') &&
(str[i + 2] != '\0')) {
base = 16;
}
errno = 0;
if (base == 16) {
// Unsigned 64-bit hexadecimal integer literals are allowed but
// immediately interpreted as signed 64-bit integers.
*value = static_cast<int64_t>(strtoull(str, &endptr, base));
} else {
*value = strtoll(str, &endptr, base);
}
return ((errno == 0) && (endptr != str) && (*endptr == 0));
}
void OS::RegisterCodeObservers() {
#ifndef PRODUCT
if (FLAG_generate_perf_events_symbols) {
UNIMPLEMENTED();
}
#endif // !PRODUCT
}
void OS::PrintErr(const char* format, ...) {
va_list args;
va_start(args, format);
VFPrint(stderr, format, args);
va_end(args);
}
void OS::Init() {
auto environment_services = std::make_shared<component::Services>();
auto env_service_root = component::subtle::CreateStaticServiceRootHandle();
environment_services->Bind(std::move(env_service_root));
environment_services->ConnectToService(tz.NewRequest());
}
void OS::Cleanup() {}
void OS::Abort() {
abort();
}
void OS::Exit(int code) {
exit(code);
}
} // namespace dart
#endif // defined(HOST_OS_FUCHSIA)