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shared_state.hpp
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shared_state.hpp
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#ifndef RBX_SHARED_STATE_H
#define RBX_SHARED_STATE_H
#include "config.h"
#include "util/refcount.hpp"
#include "gc/variable_buffer.hpp"
#include "gc/root_buffer.hpp"
#include "stats.hpp"
#include "auxiliary_threads.hpp"
#include "globals.hpp"
#include "symbol_table.hpp"
#include "primitives.hpp"
#include "lock.hpp"
#include "util/thread.hpp"
#include "capi/capi_constants.h"
#include <vector>
#include "missing/unordered_map.hpp"
#include "missing/unordered_set.hpp"
#ifdef RBX_WINDOWS
#include <winsock2.h>
#endif
namespace rubinius {
namespace capi {
class Handle;
class Handles;
class GlobalHandle;
}
namespace tooling {
class ToolBroker;
}
class SignalHandler;
class FinalizerHandler;
class ObjectMemory;
class GlobalCache;
class ConfigParser;
class State;
class VM;
class Configuration;
class LLVMState;
class WorldState;
class ManagedThread;
class QueryAgent;
class Environment;
typedef std_unordered_set<std::string> CApiBlackList;
typedef std::vector<Mutex*> CApiLocks;
typedef std_unordered_map<std::string, int> CApiLockMap;
typedef std::vector<std::string> CApiConstantNameMap;
typedef std_unordered_map<int, capi::Handle*> CApiConstantHandleMap;
typedef std::list<ManagedThread*> ThreadList;
/**
* SharedState represents the global shared state that needs to be shared
* across all VM instances.
*
* Rubinius makes no use of global variables; instead, all shared state is
* stored in a reference counted instance of this class. This makes it
* possible in theory to have multiple independent Rubinius runtimes in a
* single process.
*/
class SharedState : public RefCount, public Lockable {
private:
AuxiliaryThreads* auxiliary_threads_;
SignalHandler* signal_handler_;
FinalizerHandler* finalizer_handler_;
QueryAgent* query_agent_;
CApiConstantNameMap capi_constant_name_map_;
CApiConstantHandleMap capi_constant_handle_map_;
WorldState* world_;
ThreadList threads_;
uint64_t method_count_;
unsigned int class_count_;
int global_serial_;
int thread_ids_;
bool initialized_;
bool ruby_critical_set_;
bool check_global_interrupts_;
bool check_gc_;
QueryAgent* agent_;
VM* root_vm_;
Environment* env_;
tooling::ToolBroker* tool_broker_;
// This lock is to implement Thread.critical. It is not critical as
// the name would make it sound.
utilities::thread::Mutex ruby_critical_lock_;
pthread_t ruby_critical_thread_;
utilities::thread::SpinLock capi_ds_lock_;
utilities::thread::SpinLock capi_locks_lock_;
utilities::thread::SpinLock capi_constant_lock_;
utilities::thread::SpinLock llvm_state_lock_;
CApiBlackList capi_black_list_;
CApiLocks capi_locks_;
CApiLockMap capi_lock_map_;
bool use_capi_lock_;
int primitive_hits_[Primitives::cTotalPrimitives];
void reset_threads(STATE);
public:
Globals globals;
ObjectMemory* om;
GlobalCache* global_cache;
Configuration& config;
ConfigParser& user_variables;
SymbolTable symbols;
LLVMState* llvm_state;
Stats stats;
uint32_t hash_seed;
public:
SharedState(Environment* env, Configuration& config, ConfigParser& cp);
~SharedState();
static void discard(SharedState* ss);
int size();
void set_initialized() {
setup_capi_constant_names();
initialized_ = true;
}
AuxiliaryThreads* auxiliary_threads() const {
return auxiliary_threads_;
}
SignalHandler* signal_handler() const {
return signal_handler_;
}
void set_signal_handler(SignalHandler* thr) {
signal_handler_ = thr;
}
FinalizerHandler* finalizer_handler() const {
return finalizer_handler_;
}
void set_finalizer_handler(FinalizerHandler* thr) {
finalizer_handler_ = thr;
}
QueryAgent* query_agent() const {
return query_agent_;
}
void set_query_agent(QueryAgent* thr) {
query_agent_ = thr;
}
VM* new_vm();
void remove_vm(VM*);
ThreadList* threads() {
return &threads_;
}
Array* vm_threads(STATE);
void add_managed_thread(ManagedThread* thr);
void remove_managed_thread(ManagedThread* thr);
int global_serial() const {
return global_serial_;
}
int inc_global_serial(STATE) {
return atomic::fetch_and_add(&global_serial_, (int)1);
}
uint32_t new_thread_id();
int* global_serial_address() {
return &global_serial_;
}
uint32_t inc_class_count(STATE) {
return atomic::fetch_and_add(&class_count_, (uint32_t)1);
}
uint64_t inc_method_count(STATE) {
return atomic::fetch_and_add(&method_count_, (uint64_t)1);
}
int inc_primitive_hit(int primitive) {
return ++primitive_hits_[primitive];
}
int& primitive_hits(int primitive) {
return primitive_hits_[primitive];
}
QueryAgent* agent() const {
return agent_;
}
QueryAgent* start_agent(STATE);
Environment* env() const {
return env_;
}
VM* root_vm() const {
return root_vm_;
}
tooling::ToolBroker* tool_broker() const {
return tool_broker_;
}
ObjectMemory* memory() const {
return om;
}
bool check_gc_p() {
bool c = check_gc_;
if(unlikely(c)) {
check_gc_ = false;
}
return c;
}
void gc_soon() {
check_global_interrupts_ = true;
check_gc_ = true;
}
bool check_global_interrupts() const {
return check_global_interrupts_;
}
void set_check_global_interrupts() {
check_global_interrupts_ = true;
}
void clear_check_global_interrupts() {
check_global_interrupts_ = false;
}
bool* check_global_interrupts_address() {
return &check_global_interrupts_;
}
const unsigned int* object_memory_mark_address() const;
void set_use_capi_lock(bool s) {
use_capi_lock_ = s;
}
utilities::thread::SpinLock& capi_ds_lock() {
return capi_ds_lock_;
}
utilities::thread::SpinLock& capi_constant_lock() {
return capi_constant_lock_;
}
int capi_lock_index(std::string name);
utilities::thread::SpinLock& llvm_state_lock() {
return llvm_state_lock_;
}
void scheduler_loop();
void reinit(STATE);
bool should_stop() const;
bool stop_the_world(THREAD) WARN_UNUSED;
void restart_world(THREAD);
void stop_threads_externally();
void restart_threads_externally();
bool checkpoint(THREAD);
void gc_dependent(STATE, CallFrame* call_frame);
void gc_independent(STATE, CallFrame* call_frame);
void gc_dependent(THREAD, utilities::thread::Condition* = NULL);
void gc_independent(THREAD);
void gc_independent();
void set_critical(STATE, CallFrame* call_frame);
void clear_critical(STATE);
void enter_capi(STATE, const char* file, int line);
void leave_capi(STATE);
void setup_capi_constant_names();
CApiConstantNameMap& capi_constant_name_map() {
return capi_constant_name_map_;
}
CApiConstantHandleMap& capi_constant_handle_map() {
return capi_constant_handle_map_;
}
void initialize_capi_black_list();
};
}
#endif