T fake_consume(std::atomic<T> &val) {
// XXX: ALPHA or some shit also compilers wtvr
return val.load(mo_rlx);
}
inline bool operator !() const
{
return !m_value.load();
}
inline void operator =(bool _value)
{
m_value.store(_value);
}
bool is_locked() {
return locked.load(std::memory_order_acquire);
}
void stop()
{
_exit_flag.store(true);
_cond_var.notify_all();
join();
}
void lock()
{
while(mSpinLock.exchange(true) == true)
SwitchToThread();
}
/** @brief a test-and-test-and-set lock */
class tatas_lock {
std::atomic<bool> locked; /* TODO can std::atomic_flag be used? */
public:
tatas_lock() : locked(false) {};
tatas_lock(tatas_lock&) = delete; /* TODO? */
bool try_lock() {
if(is_locked()) return false;
return !locked.exchange(true, std::memory_order_acq_rel);
}
/** getter for file nature */
inline NatureFlag getnature() { return m_filenature.load(std::memory_order_acquire); }
namespace folly {
std::atomic<EventBaseManager*> globalManager(nullptr);
EventBaseManager* EventBaseManager::get() {
EventBaseManager* mgr = globalManager;
if (mgr) {
return mgr;
}
EventBaseManager* new_mgr = new EventBaseManager;
bool exchanged = globalManager.compare_exchange_strong(mgr, new_mgr);
if (!exchanged) {
delete new_mgr;
return mgr;
} else {
return new_mgr;
}
}
/*
* EventBaseManager methods
*/
void EventBaseManager::setEventBase(EventBase *eventBase,
bool takeOwnership) {
EventBaseInfo *info = localStore_.get();
if (info != nullptr) {
throw std::runtime_error("EventBaseManager: cannot set a new EventBase "
"for this thread when one already exists");
}
info = new EventBaseInfo(eventBase, takeOwnership);
localStore_.reset(info);
this->trackEventBase(eventBase);
}
void EventBaseManager::clearEventBase() {
EventBaseInfo *info = localStore_.get();
if (info != nullptr) {
this->untrackEventBase(info->eventBase);
this->localStore_.reset(nullptr);
}
}
// XXX should this really be "const"?
EventBase * EventBaseManager::getEventBase() const {
// have one?
auto *info = localStore_.get();
if (! info) {
info = new EventBaseInfo();
localStore_.reset(info);
if (observer_) {
info->eventBase->setObserver(observer_);
}
// start tracking the event base
// XXX
// note: ugly cast because this does something mutable
// even though this method is defined as "const".
// Simply removing the const causes trouble all over fbcode;
// lots of services build a const EventBaseManager and errors
// abound when we make this non-const.
(const_cast<EventBaseManager *>(this))->trackEventBase(info->eventBase);
}
return info->eventBase;
}
} // namespace folly
/** getter for File state */
inline State state() { return m_state.load(std::memory_order_acquire); }
/** change the file nature */
inline void nature(NatureFlag nature = NatureFlag::PHYSICAL){ m_filenature.exchange(nature, std::memory_order_acq_rel); }
T* get() const
{
return v.load(std::memory_order_consume);
}
void SWRenderer::Init()
{
s_bScreenshot.store(false);
}
void SWRenderer::SetScreenshot(const char *_szFilename)
{
std::lock_guard<std::mutex> lk(s_criticalScreenshot);
s_sScreenshotName = _szFilename;
s_bScreenshot.store(true);
}
AtomWrapper & operator=(const AtomWrapper &other)
{
_a.store(other._a.load());
}
void schedule (const Task & task)
{
POMAGMA_ASSERT(m_accepting.load(), "pool is not accepting work");
m_queue.push(task);
m_condition.notify_one();
}
T operator+=(T val)
{
return _a.fetch_add(val);
}
namespace HPHP { namespace jit { namespace tc {
void recordPerfRelocMap(
TCA start, TCA end,
TCA coldStart, TCA coldEnd,
SrcKey sk, int argNum,
const GrowableVector<IncomingBranch> &incomingBranchesIn,
CGMeta& fixups) {
String info = perfRelocMapInfo(start, end,
coldStart, coldEnd,
sk, argNum,
incomingBranchesIn,
fixups);
Debug::DebugInfo::Get()->recordRelocMap(start, end, info);
}
void recordRelocationMetaData(SrcKey sk, SrcRec& srcRec, const TransLoc& loc,
CGMeta& fixups) {
if (!RuntimeOption::EvalPerfRelocate) return;
recordPerfRelocMap(loc.mainStart(), loc.mainEnd(),
loc.coldCodeStart(), loc.coldEnd(),
sk, -1,
srcRec.tailFallbackJumps(),
fixups);
}
static Debug::TCRange rangeFrom(const CodeBlock& cb, const TCA addr,
bool isAcold) {
assertx(cb.contains(addr));
return Debug::TCRange(addr, cb.frontier(), isAcold);
}
void recordGdbTranslation(SrcKey sk, const Func* srcFunc, const CodeBlock& cb,
const TCA start, bool exit, bool inPrologue) {
if (start != cb.frontier()) {
assertOwnsCodeLock();
if (!RuntimeOption::EvalJitNoGdb) {
Debug::DebugInfo::Get()->recordTracelet(
rangeFrom(cb, start, &cb == &code().cold()),
srcFunc,
srcFunc->unit() ? srcFunc->unit()->at(sk.offset()) : nullptr,
exit, inPrologue
);
}
if (RuntimeOption::EvalPerfPidMap) {
Debug::DebugInfo::Get()->recordPerfMap(
rangeFrom(cb, start, &cb == &code().cold()),
sk,
srcFunc,
exit,
inPrologue
);
}
}
}
void recordBCInstr(uint32_t op, const TCA addr, const TCA end, bool cold) {
if (addr != end) {
Debug::DebugInfo::Get()->recordBCInstr(Debug::TCRange(addr, end, cold), op);
}
}
////////////////////////////////////////////////////////////////////////////////
static std::atomic<bool> s_loggedJitMature{false};
/*
* If the jit maturity counter is enabled, update it with the current amount of
* emitted code.
*/
void reportJitMaturity(const CodeCache& code) {
auto static jitMaturityCounter = ServiceData::createCounter("jit.maturity");
// Optimized translations are faster than profiling translations, which are
// faster than the interpreter. But when optimized translations are
// generated, some profiling translations will become dead. We assume the
// incremental value of an optimized translation over the corresponding
// profiling translations is comparable to the incremental value of a
// profiling translation of similar size; thus we don't have to apply
// different weights to code in different regions.
auto const codeSize =
code.hot().used() + code.main().used() + code.prof().used();
if (jitMaturityCounter) {
// EvalJitMatureSize is supposed to to be set to approximately 20% of the
// code that will give us full performance, so recover the "fully mature"
// size with some math.
auto const fullSize = RuntimeOption::EvalJitMatureSize * 5;
auto const after = codeSize >= fullSize ? 100
: (codeSize * 100 / fullSize);
auto const before = jitMaturityCounter->getValue();
if (after > before) jitMaturityCounter->setValue(after);
}
if (!s_loggedJitMature.load(std::memory_order_relaxed) &&
StructuredLog::enabled() &&
codeSize >= RuntimeOption::EvalJitMatureSize &&
!s_loggedJitMature.exchange(true, std::memory_order_relaxed)) {
StructuredLogEntry cols;
cols.setInt("jit_mature_sec", time(nullptr) - HttpServer::StartTime);
StructuredLog::log("hhvm_warmup", cols);
}
}
void logTranslation(const TransEnv& env) {
auto nanos = HPHP::Timer::GetThreadCPUTimeNanos() - env.unit->startNanos();
StructuredLogEntry cols;
auto& context = env.unit->context();
auto kind = show(context.kind);
cols.setStr("trans_kind", !debug ? kind : kind + "_debug");
if (context.func) {
cols.setStr("func", context.func->fullName()->data());
}
cols.setInt("jit_sample_rate", RuntimeOption::EvalJitSampleRate);
// timing info
cols.setInt("jit_micros", nanos / 1000);
// hhir stats
cols.setInt("max_tmps", env.unit->numTmps());
cols.setInt("max_blocks", env.unit->numBlocks());
cols.setInt("max_insts", env.unit->numInsts());
auto hhir_blocks = rpoSortCfg(*env.unit);
cols.setInt("num_blocks", hhir_blocks.size());
size_t num_insts = 0;
for (auto b : hhir_blocks) num_insts += b->instrs().size();
cols.setInt("num_insts", num_insts);
// vasm stats
cols.setInt("max_vreg", env.vunit->next_vr);
cols.setInt("max_vblocks", env.vunit->blocks.size());
cols.setInt("max_vcalls", env.vunit->vcallArgs.size());
size_t max_vinstr = 0;
for (auto& blk : env.vunit->blocks) max_vinstr += blk.code.size();
cols.setInt("max_vinstr", max_vinstr);
cols.setInt("num_vconst", env.vunit->constToReg.size());
auto vblocks = sortBlocks(*env.vunit);
size_t num_vinstr[kNumAreas] = {0, 0, 0};
size_t num_vblocks[kNumAreas] = {0, 0, 0};
for (auto b : vblocks) {
const auto& block = env.vunit->blocks[b];
num_vinstr[(int)block.area_idx] += block.code.size();
num_vblocks[(int)block.area_idx]++;
}
cols.setInt("num_vinstr_main", num_vinstr[(int)AreaIndex::Main]);
cols.setInt("num_vinstr_cold", num_vinstr[(int)AreaIndex::Cold]);
cols.setInt("num_vinstr_frozen", num_vinstr[(int)AreaIndex::Frozen]);
cols.setInt("num_vblocks_main", num_vblocks[(int)AreaIndex::Main]);
cols.setInt("num_vblocks_cold", num_vblocks[(int)AreaIndex::Cold]);
cols.setInt("num_vblocks_frozen", num_vblocks[(int)AreaIndex::Frozen]);
// finish & log
StructuredLog::log("hhvm_jit", cols);
}
}}}
int main() {
try {
SDLManager sdl{SDL_INIT_TIMER};
sdl.setOpenGLVersion(3, 3);
auto window = sdl.createWindow("Harken", 1024, 768);
glewExperimental = true;
const auto glewResult = glewInit();
if (glewResult != GLEW_OK) {
throw std::runtime_error{StringBuilder{} << "Could not initialise GLEW. Error: " << glewGetErrorString(glewResult)};
}
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
VertexArrayObject triangleVAO;
triangleVAO.bind();
VertexBufferObject arrayBuffer{GL_ARRAY_BUFFER};
arrayBuffer.bind();
GLfloat vertices[3][2] = {
{ 0.0f, 0.433f},
{ 0.5f, -0.433f},
{-0.5f, -0.433f}
};
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
const auto vertexShader = std::make_shared<Shader>(GL_VERTEX_SHADER, "uniform-scale.vert");
const auto fragmentShader = std::make_shared<Shader>(GL_FRAGMENT_SHADER, "red.frag");
ShaderProgram shaderProgram{vertexShader, fragmentShader};
shaderProgram.use();
glVertexAttribPointer(PositionAttrib, 2, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(PositionAttrib);
const auto scaleLocation = shaderProgram.uniformLocation("scale");
SDL_AddTimer(1000 / 60, update, nullptr);
auto running = true;
while (running) {
// TODO: move this into SDLManager
SDL_Event event;
while (SDL_PollEvent(&event)) {
if (event.type == SDL_QUIT) {
running = false;
}
}
glUniform1f(scaleLocation, std::sin(scale.load()));
render(window, triangleVAO);
}
}
catch (const std::exception& ex) {
std::cout << ex.what() << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
void future_function_pointers(Executor& exec)
{
future_void_f1_count.store(0);
future_void_f2_count.store(0);
future_int_f1_count.store(0);
future_int_f2_count.store(0);
future<void> f1
= dataflow(exec,
&future_void_f1
, async(&future_void_sf1, shared_future<void>(make_ready_future()))
);
f1.wait();
HPX_TEST_EQ(future_void_f1_count, 2u);
future_void_f1_count.store(0);
future<void> f2 = dataflow(exec,
&future_void_f2
, async(&future_void_sf1, shared_future<void>(make_ready_future()))
, async(&future_void_sf1, shared_future<void>(make_ready_future()))
);
f2.wait();
HPX_TEST_EQ(future_void_f1_count, 2u);
HPX_TEST_EQ(future_void_f2_count, 1u);
future_void_f1_count.store(0);
future_void_f2_count.store(0);
future_int_f1_count.store(0);
future_int_f2_count.store(0);
future<int> f3 = dataflow(exec,
&future_int_f1
, make_ready_future()
);
HPX_TEST_EQ(f3.get(), 1);
HPX_TEST_EQ(future_int_f1_count, 1u);
future_int_f1_count.store(0);
future<int> f4 = dataflow(exec,
&future_int_f2
, dataflow(exec, &future_int_f1, make_ready_future())
, dataflow(exec, &future_int_f1, make_ready_future())
);
HPX_TEST_EQ(f4.get(), 2);
HPX_TEST_EQ(future_int_f1_count, 2u);
HPX_TEST_EQ(future_int_f2_count, 1u);
future_int_f1_count.store(0);
future_int_f2_count.store(0);
future_int_f_vector_count.store(0);
std::vector<future<int> > vf;
for(std::size_t i = 0; i < 10; ++i)
{
vf.push_back(dataflow(exec, &future_int_f1, make_ready_future()));
}
future<int> f5 = dataflow(exec, &future_int_f_vector, std::ref(vf));
HPX_TEST_EQ(f5.get(), 10);
}
void unlock() {
locked.store(false, std::memory_order_release);
}
void operator()(BlockingQueue<int> &queue) {
for (int i = 0; i < size; ++i) {
queue.WaitAndPush(product_item.fetch_add(1));
}
}
~ThreadPoolExecutor()
{
if (!_exit_flag.load()) {
stop();
}
}
AtomWrapper(const std::atomic<T> &a)
:_a(a.load())
{}
inline operator bool() const
{
return m_value.load();
}
void store(T val) volatile noexcept
{
_a.store(val);
}
inline bool operator !=(bool _value) const
{
return m_value.load() != _value;
}
T load() volatile noexcept
{
return _a.load();
}
//-----------------------------------------------------------------------------
int main( int argc, char* argv[] ) {
// Due to realtime scheduling, et al, must have root access to run.
if( geteuid() != 0 ) {
sprintf( spstr, "This program requires root access. Re-run with sudo.\nExiting\n" );
printf( "%s", spstr );
exit( 1 );
}
init( argc, argv );
// last before main loop, arm the timer
timer.arm( timer_c::PERIODIC, TIMER_PERIOD_NSECS );
//while( !quit.load( std::memory_order_seq_cst ) ) {
//while( !quit ) {
bool preycontroller_idle = true;
while( !quit.load( std::memory_order_relaxed ) ) {
int fd;
notification_t note;
ssize_t bytes;
while( !select() );
if( FD_ISSET( FD_TIMER_TO_COORDINATOR_READ_CHANNEL, &pending_fds ) != 0 ) {
fd = FD_TIMER_TO_COORDINATOR_READ_CHANNEL;
if( __read( fd, ¬e, sizeof(notification_t) ) == -1 ) {
if( info ) {
sprintf( spstr, "ERROR : (coordinator.cpp) read_messages() failed calling __read(FD_TIMER_TO_COORDINATOR_READ_CHANNEL,...)\n" );
info->write( spstr );
}
} else {
if( info ) {
sprintf( spstr, "read_notifications( note.source=TIMER, caught_timer_events=%d, actual_timer_events=%d\n", ++caught_timer_events, actual_timer_events );
info->write( spstr );
}
if( caught_timer_events >= MAX_TIMER_EVENTS ) {
//quit.store( 1, std::memory_order_relaxed );
//quit.store( 1, std::memory_order_seq_cst );
//quit = true;
//quit++;
if( info ) {
info->flush();
}
kill( coordinator_pid, SIGTERM );
}
if( preycontroller_idle ) {
//pthread_kill( wakeup_thread, SIGSTOP );
prey_controller->raise_priority();
//pthread_kill( wakeup_thread, SIGCONT );
preycontroller_idle = false;
sprintf( spstr, "raised_priority: pid=%d, _os_priority=%d)\n", prey_controller->pid, prey_controller->_os_priority );
info->write( spstr );
}
}
}
// - check for client specific notifications -
// prey controller
if( FD_ISSET( FD_PREYCONTROLLER_TO_COORDINATOR_READ_CHANNEL, &pending_fds ) != 0) {
fd = FD_PREYCONTROLLER_TO_COORDINATOR_READ_CHANNEL;
if( __read( fd, ¬e, sizeof(notification_t) ) == -1 ) {
if( info ) {
sprintf( spstr, "ERROR : (coordinator.cpp) read_messages() failed calling __read(FD_PREYCONTROLLER_TO_COORDINATOR_READ_CHANNEL,...)\n" );
info->write( spstr );
}
//printf( "%s\n", spstr );
} else {
if( info ) {
char note_type[8];
if( note.type == notification_t::IDLE )
sprintf( note_type, "IDLE" );
else if( note.type == notification_t::OPEN )
sprintf( note_type, "OPEN" );
else if( note.type == notification_t::CLOSE )
sprintf( note_type, "CLOSE" );
else if( note.type == notification_t::READ )
sprintf( note_type, "READ" );
else if( note.type == notification_t::WRITE )
sprintf( note_type, "WRITE" );
sprintf( spstr, "read_notifications( note.source=CLIENT, note.type=%s, client=prey_controller )\n", note_type );
info->write( spstr );
}
if( note.type == notification_t::CLOSE ) {
prey_controller->invalidated = true;
} else {
prey_controller->message_queue.push( note );
}
}
}
// check block detection first. If client blocked, needs to be put into
// blocking queue. If falls through, might get put into run queue instead.
if( FD_ISSET( FD_WAKEUP_TO_COORDINATOR_READ_CHANNEL, &pending_fds) != 0 ) {
fd = FD_WAKEUP_TO_COORDINATOR_READ_CHANNEL;
if( __read( fd, ¬e, sizeof(notification_t) ) == -1 ) {
if( info ) {
sprintf( spstr, "ERROR : (coordinator.cpp) read_messages() failed calling __read(FD_WAKEUP_TO_COORDINATOR_READ_CHANNEL,...)\n" );
info->write( spstr );
}
} else {
if( info ) {
sprintf( spstr, "read_notifications( note.source=WAKEUP\n" );
info->write( spstr );
}
// reenable block detection notifications
wakeup_enabled.store( 1, std::memory_order_seq_cst );
}
}
/*
if( info ) {
// print the notification for debugging
char note_type[8];
char note_source[8];
if( note.source == notification_t::TIMER )
sprintf( note_source, "TIMER" );
else if( note.source == notification_t::WAKEUP )
sprintf( note_source, "WAKEUP" );
else if( note.source == notification_t::CLIENT )
sprintf( note_source, "CLIENT" );
if( note.type == notification_t::IDLE )
sprintf( note_type, "IDLE" );
else if( note.type == notification_t::OPEN )
sprintf( note_type, "OPEN" );
else if( note.type == notification_t::CLOSE )
sprintf( note_type, "CLOSE" );
else if( note.type == notification_t::READ )
sprintf( note_type, "READ" );
else if( note.type == notification_t::WRITE )
sprintf( note_type, "WRITE" );
sprintf( spstr, "notification: source[%s], type[%s], ts[%llu], period[%llu]\n", note_source, note_type, note.ts, note.period );
info->write( spstr );
}
*/
if( note.source == notification_t::CLIENT ) {
if( note.type == notification_t::IDLE ) {
//pthread_kill( wakeup_thread, SIGSTOP );
prey_controller->lower_priority();
//pthread_kill( wakeup_thread, SIGCONT );
preycontroller_idle = true;
sprintf( spstr, "lowered_priority: pid=%d, _os_priority=%d)\n", prey_controller->pid, prey_controller->_os_priority );
info->write( spstr );
} else if( note.type == notification_t::OPEN ) {
} else if( note.type == notification_t::CLOSE ) {
} else if( note.type == notification_t::READ ) {
fd = FD_COORDINATOR_TO_PREYCONTROLLER_WRITE_CHANNEL;
note.source = notification_t::SERVER;
note.type = notification_t::READ; // the instruction to the client
sprintf( spstr, "server responding with notification: source[SERVER], type[READ]\n" );
info->write( spstr );
note.ts = generate_timestamp();
if( __write( fd, ¬e, sizeof(notification_t), bytes ) != OS_ERROR_NONE ) {
// TODO: Handle/Recover
if( info ) {
sprintf( spstr, "ERROR : (coordinator.cpp) process_notifications() failed calling __write(FD_COORDINATOR_TO_PREYCONTROLLER_WRITE_CHANNEL,...)\n" );
info->write( spstr );
}
}
} else if( note.type == notification_t::WRITE ) {
}
} else if( note.source == notification_t::TIMER ) {
} else if( note.source == notification_t::WAKEUP ) {
}
info->flush();
}
shutdown();
return 0;
}
T *get_from(size_t rind) {
auto ccount = count.load(std::memory_order_relaxed);
act_ind = rin % ccount;
}
