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/*
* jit-thread.h - Internal thread management routines for libjit.
*
* Copyright (C) 2004 Southern Storm Software, Pty Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _JIT_THREAD_H
#define _JIT_THREAD_H
#include <config.h>
#if defined(HAVE_PTHREAD_H) && defined(HAVE_LIBPTHREAD)
#include <pthread.h>
#elif defined(JIT_WIN32_PLATFORM)
#include <windows.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* Determine the type of threading library that we are using.
*/
#if defined(HAVE_PTHREAD_H) && defined(HAVE_LIBPTHREAD)
#define JIT_THREADS_SUPPORTED 1
#define JIT_THREADS_PTHREAD 1
#elif defined(JIT_WIN32_PLATFORM)
#define JIT_THREADS_SUPPORTED 1
#define JIT_THREADS_WIN32 1
#else
#define JIT_THREADS_SUPPORTED 0
#endif
/*
* Type that describes a thread's identifier, and the id comparison function.
*/
#if defined(JIT_THREADS_PTHREAD)
typedef pthread_t jit_thread_id_t;
#define jit_thread_id_equal(x,y) (pthread_equal((x), (y)))
#elif defined(JIT_THREADS_WIN32)
typedef HANDLE jit_thread_id_t;
#define jit_thread_id_equal(x,y) ((x) == (y))
#else
typedef int jit_thread_id_t;
#define jit_thread_id_equal(x,y) ((x) == (y))
#endif
/*
* Control information that is associated with a thread.
*/
typedef struct jit_thread_control *jit_thread_control_t;
/*
* Initialize the thread routines. Ignored if called multiple times.
*/
void _jit_thread_init(void);
/*
* Get the JIT control object for the current thread.
*/
jit_thread_control_t _jit_thread_get_control(void);
/*
* Get the identifier for the current thread.
*/
jit_thread_id_t _jit_thread_current_id(void);
/*
* Define the primitive mutex operations.
*/
#if defined(JIT_THREADS_PTHREAD)
typedef pthread_mutex_t jit_mutex_t;
#define jit_mutex_create(mutex) (pthread_mutex_init((mutex), 0))
#define jit_mutex_destroy(mutex) (pthread_mutex_destroy((mutex)))
#define jit_mutex_lock(mutex) (pthread_mutex_lock((mutex)))
#define jit_mutex_unlock(mutex) (pthread_mutex_unlock((mutex)))
#elif defined(JIT_THREADS_WIN32)
typedef CRITICAL_SECTION jit_mutex_t;
#define jit_mutex_create(mutex) (InitializeCriticalSection((mutex)))
#define jit_mutex_destroy(mutex) (DeleteCriticalSection((mutex)))
#define jit_mutex_lock(mutex) (EnterCriticalSection((mutex)))
#define jit_mutex_unlock(mutex) (LeaveCriticalSection((mutex)))
#else
typedef int jit_mutex_t;
#define jit_mutex_create(mutex) do { ; } while (0)
#define jit_mutex_destroy(mutex) do { ; } while (0)
#define jit_mutex_lock(mutex) do { ; } while (0)
#define jit_mutex_unlock(mutex) do { ; } while (0)
#endif
#ifdef __cplusplus
};
#endif
#endif /* _JIT_THREAD_H */