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/*
* OXT - OS eXtensions for boosT
* Provides important functionality necessary for writing robust server software.
*
* Copyright (c) 2012-2017 Phusion Holding B.V.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef _OXT_DETAIL_CONTEXT_HPP_
#define _OXT_DETAIL_CONTEXT_HPP_
#include <boost/thread/mutex.hpp>
#include <boost/shared_ptr.hpp>
#include <list>
#include <vector>
#include <string>
#include <pthread.h>
#ifdef __linux__
#include <sys/types.h>
#endif
#include "../spin_lock.hpp"
namespace oxt {
struct thread_local_context;
typedef boost::shared_ptr<thread_local_context> thread_local_context_ptr;
struct global_context_t {
boost::mutex next_thread_number_mutex;
/** Thread numbering begins at 2. The main thread has number 1.
* A thread number of 0 is invalid. */
unsigned int next_thread_number;
boost::mutex thread_registration_mutex;
std::list<thread_local_context_ptr> registered_threads;
global_context_t();
};
struct thread_local_context {
std::list<thread_local_context_ptr>::iterator iterator;
pthread_t thread;
#ifdef __linux__
pid_t tid;
#endif
unsigned int thread_number;
std::string thread_name;
/** This lock is normally locked, but only unlocked during an oxt::sycall function,
* and is relocked when that function returns. One can use try_lock to find out
* whether the code is inside an oxt::syscall function.
*/
spin_lock syscall_interruption_lock;
#ifdef OXT_BACKTRACE_IS_ENABLED
std::vector<trace_point *> backtrace_list;
spin_lock backtrace_lock;
#endif
static thread_local_context_ptr make_shared_ptr();
thread_local_context();
};
void set_thread_local_context(const thread_local_context_ptr &ctx);
thread_local_context *get_thread_local_context();
} // namespace oxt
#endif /* _OXT_DETAIL_CONTEXT_HPP_ */
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