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Copy paththread_data.hpp
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408 lines (361 loc) · 12.8 KB
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#ifndef BOOST_THREAD_PTHREAD_THREAD_DATA_HPP
#define BOOST_THREAD_PTHREAD_THREAD_DATA_HPP
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
// (C) Copyright 2007 Anthony Williams
// (C) Copyright 2011-2012 Vicente J. Botet Escriba
#include <boost/thread/detail/config.hpp>
#include <boost/thread/exceptions.hpp>
#include <boost/thread/lock_guard.hpp>
#include <boost/thread/lock_types.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/thread/pthread/condition_variable_fwd.hpp>
#include <boost/thread/pthread/pthread_helpers.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/enable_shared_from_this.hpp>
#include <boost/assert.hpp>
#include <boost/thread/detail/platform_time.hpp>
#ifdef BOOST_THREAD_USES_CHRONO
#include <boost/chrono/system_clocks.hpp>
#endif
#include <map>
#include <vector>
#include <utility>
#if defined(__ANDROID__)
# ifndef PAGE_SIZE
# define PAGE_SIZE 4096
# endif
#endif
#include <pthread.h>
#include <unistd.h>
#include <boost/config/abi_prefix.hpp>
namespace boost
{
class thread_attributes {
public:
thread_attributes() BOOST_NOEXCEPT {
int res = pthread_attr_init(&val_);
BOOST_VERIFY(!res && "pthread_attr_init failed");
}
~thread_attributes() {
int res = pthread_attr_destroy(&val_);
BOOST_VERIFY(!res && "pthread_attr_destroy failed");
}
// stack
void set_stack_size(std::size_t size) BOOST_NOEXCEPT {
if (size==0) return;
#ifdef BOOST_THREAD_USES_GETPAGESIZE
std::size_t page_size = getpagesize();
#else
std::size_t page_size = ::sysconf( _SC_PAGESIZE);
#endif
#ifdef PTHREAD_STACK_MIN
if (size<static_cast<std::size_t>(PTHREAD_STACK_MIN)) size=PTHREAD_STACK_MIN;
#endif
size = ((size+page_size-1)/page_size)*page_size;
int res = pthread_attr_setstacksize(&val_, size);
BOOST_VERIFY(!res && "pthread_attr_setstacksize failed");
}
std::size_t get_stack_size() const BOOST_NOEXCEPT {
std::size_t size;
int res = pthread_attr_getstacksize(&val_, &size);
BOOST_VERIFY(!res && "pthread_attr_getstacksize failed");
return size;
}
#define BOOST_THREAD_DEFINES_THREAD_ATTRIBUTES_NATIVE_HANDLE
typedef pthread_attr_t native_handle_type;
native_handle_type* native_handle() BOOST_NOEXCEPT {
return &val_;
}
const native_handle_type* native_handle() const BOOST_NOEXCEPT {
return &val_;
}
private:
pthread_attr_t val_;
};
class thread;
namespace detail
{
struct shared_state_base;
struct tss_cleanup_function;
struct thread_exit_callback_node;
struct tss_data_node
{
typedef void(*cleanup_func_t)(void*);
typedef void(*cleanup_caller_t)(cleanup_func_t, void*);
cleanup_caller_t caller;
cleanup_func_t func;
void* value;
tss_data_node(cleanup_caller_t caller_,cleanup_func_t func_,void* value_):
caller(caller_),func(func_),value(value_)
{}
};
struct thread_data_base;
typedef boost::shared_ptr<thread_data_base> thread_data_ptr;
struct BOOST_THREAD_DECL thread_data_base:
enable_shared_from_this<thread_data_base>
{
thread_data_ptr self;
pthread_t thread_handle;
boost::mutex data_mutex;
boost::condition_variable done_condition;
bool done;
bool join_started;
bool joined;
boost::detail::thread_exit_callback_node* thread_exit_callbacks;
std::map<void const*,boost::detail::tss_data_node> tss_data;
//#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
// These data must be at the end so that the access to the other fields doesn't change
// when BOOST_THREAD_PROVIDES_INTERRUPTIONS is defined.
// Another option is to have them always
pthread_mutex_t* cond_mutex;
pthread_cond_t* current_cond;
//#endif
typedef std::vector<std::pair<condition_variable*, mutex*>
//, hidden_allocator<std::pair<condition_variable*, mutex*> >
> notify_list_t;
notify_list_t notify;
//#ifndef BOOST_NO_EXCEPTIONS
typedef std::vector<shared_ptr<shared_state_base> > async_states_t;
async_states_t async_states_;
//#endif
//#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
// These data must be at the end so that the access to the other fields doesn't change
// when BOOST_THREAD_PROVIDES_INTERRUPTIONS is defined.
// Another option is to have them always
bool interrupt_enabled;
bool interrupt_requested;
//#endif
thread_data_base():
thread_handle(0),
done(false),join_started(false),joined(false),
thread_exit_callbacks(0),
//#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
cond_mutex(0),
current_cond(0),
//#endif
notify()
//#ifndef BOOST_NO_EXCEPTIONS
, async_states_()
//#endif
//#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
, interrupt_enabled(true)
, interrupt_requested(false)
//#endif
{}
virtual ~thread_data_base();
typedef pthread_t native_handle_type;
virtual void run()=0;
virtual void notify_all_at_thread_exit(condition_variable* cv, mutex* m)
{
notify.push_back(std::pair<condition_variable*, mutex*>(cv, m));
}
//#ifndef BOOST_NO_EXCEPTIONS
void make_ready_at_thread_exit(shared_ptr<shared_state_base> as)
{
async_states_.push_back(as);
}
//#endif
};
BOOST_THREAD_DECL thread_data_base* get_current_thread_data();
#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
class interruption_checker
{
thread_data_base* const thread_info;
pthread_mutex_t* m;
bool set;
bool done;
void check_for_interruption()
{
#ifndef BOOST_NO_EXCEPTIONS
if(thread_info->interrupt_requested)
{
thread_info->interrupt_requested=false;
throw thread_interrupted(); // BOOST_NO_EXCEPTIONS protected
}
#endif
}
void operator=(interruption_checker&);
public:
explicit interruption_checker(pthread_mutex_t* cond_mutex,pthread_cond_t* cond):
thread_info(detail::get_current_thread_data()),m(cond_mutex),
set(thread_info && thread_info->interrupt_enabled), done(false)
{
if(set)
{
lock_guard<mutex> guard(thread_info->data_mutex);
check_for_interruption();
thread_info->cond_mutex=cond_mutex;
thread_info->current_cond=cond;
BOOST_VERIFY(!posix::pthread_mutex_lock(m));
}
else
{
BOOST_VERIFY(!posix::pthread_mutex_lock(m));
}
}
void unlock_if_locked()
{
if ( ! done) {
if (set)
{
BOOST_VERIFY(!posix::pthread_mutex_unlock(m));
lock_guard<mutex> guard(thread_info->data_mutex);
thread_info->cond_mutex=NULL;
thread_info->current_cond=NULL;
}
else
{
BOOST_VERIFY(!posix::pthread_mutex_unlock(m));
}
done = true;
}
}
~interruption_checker() BOOST_NOEXCEPT_IF(false)
{
unlock_if_locked();
}
};
#endif
}
namespace this_thread
{
void BOOST_THREAD_DECL yield() BOOST_NOEXCEPT;
namespace hidden
{
inline bool always_false()
{
return false;
}
}
#if defined BOOST_THREAD_USES_DATETIME
#ifdef __DECXXX
/// Workaround of DECCXX issue of incorrect template substitution
template<>
#endif
inline void sleep(system_time const& abs_time)
{
mutex mx;
unique_lock<mutex> lock(mx);
condition_variable cond;
cond.timed_wait(lock, abs_time, hidden::always_false);
}
template<typename TimeDuration>
void sleep(TimeDuration const& rel_time)
{
mutex mx;
unique_lock<mutex> lock(mx);
condition_variable cond;
cond.timed_wait(lock, rel_time, hidden::always_false);
}
#endif
#ifdef BOOST_THREAD_USES_CHRONO
template <class Clock, class Duration>
void sleep_until(const chrono::time_point<Clock, Duration>& t)
{
mutex mut;
unique_lock<mutex> lk(mut);
condition_variable cv;
cv.wait_until(lk, t, hidden::always_false);
}
template <class Rep, class Period>
void sleep_for(const chrono::duration<Rep, Period>& d)
{
mutex mut;
unique_lock<mutex> lk(mut);
condition_variable cv;
cv.wait_for(lk, d, hidden::always_false);
}
#endif
namespace no_interruption_point
{
#if defined BOOST_THREAD_SLEEP_FOR_IS_STEADY
// Use pthread_delay_np or nanosleep when available
// because they do not provide an interruption point.
namespace hidden
{
void BOOST_THREAD_DECL sleep_for_internal(const detail::platform_duration& ts);
}
#if defined BOOST_THREAD_USES_DATETIME
#ifdef __DECXXX
/// Workaround of DECCXX issue of incorrect template substitution
template<>
#endif
inline void sleep(system_time const& abs_time)
{
const detail::real_platform_timepoint ts(abs_time);
detail::platform_duration d(ts - detail::real_platform_clock::now());
while (d > detail::platform_duration::zero())
{
d = (std::min)(d, detail::platform_milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS));
hidden::sleep_for_internal(d);
d = ts - detail::real_platform_clock::now();
}
}
template<typename TimeDuration>
void sleep(TimeDuration const& rel_time)
{
hidden::sleep_for_internal(detail::platform_duration(rel_time));
}
#endif
#ifdef BOOST_THREAD_USES_CHRONO
template <class Rep, class Period>
void sleep_for(const chrono::duration<Rep, Period>& d)
{
hidden::sleep_for_internal(detail::platform_duration(d));
}
template <class Duration>
void sleep_until(const chrono::time_point<chrono::steady_clock, Duration>& t)
{
sleep_for(t - chrono::steady_clock::now());
}
template <class Clock, class Duration>
void sleep_until(const chrono::time_point<Clock, Duration>& t)
{
typedef typename common_type<Duration, typename Clock::duration>::type common_duration;
common_duration d(t - Clock::now());
while (d > common_duration::zero())
{
d = (std::min)(d, common_duration(chrono::milliseconds(BOOST_THREAD_POLL_INTERVAL_MILLISECONDS)));
hidden::sleep_for_internal(detail::platform_duration(d));
d = t - Clock::now();
}
}
#endif
#else // BOOST_THREAD_SLEEP_FOR_IS_STEADY
// When pthread_delay_np and nanosleep are not available,
// fall back to using the interruptible sleep functions.
#if defined BOOST_THREAD_USES_DATETIME
#ifdef __DECXXX
/// Workaround of DECCXX issue of incorrect template substitution
template<>
#endif
inline void sleep(system_time const& abs_time)
{
this_thread::sleep(abs_time);
}
template<typename TimeDuration>
void sleep(TimeDuration const& rel_time)
{
this_thread::sleep(rel_time);
}
#endif
#ifdef BOOST_THREAD_USES_CHRONO
template <class Clock, class Duration>
void sleep_until(const chrono::time_point<Clock, Duration>& t)
{
this_thread::sleep_until(t);
}
template <class Rep, class Period>
void sleep_for(const chrono::duration<Rep, Period>& d)
{
this_thread::sleep_for(d);
}
#endif
#endif // BOOST_THREAD_SLEEP_FOR_IS_STEADY
} // no_interruption_point
} // this_thread
}
#include <boost/config/abi_suffix.hpp>
#endif
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