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-rw-r--r--src/libstrongswan/utils/mutex.h213
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diff --git a/src/libstrongswan/utils/mutex.h b/src/libstrongswan/utils/mutex.h
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--- a/src/libstrongswan/utils/mutex.h
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-/*
- * Copyright (C) 2008 Tobias Brunner
- * Copyright (C) 2008 Martin Willi
- * Hochschule fuer Technik Rapperswil
- *
- * 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. See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * 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.
- */
-
-/**
- * @defgroup mutex mutex
- * @{ @ingroup utils
- */
-
-#ifndef MUTEX_H_
-#define MUTEX_H_
-
-typedef struct mutex_t mutex_t;
-typedef struct condvar_t condvar_t;
-typedef struct rwlock_t rwlock_t;
-typedef enum mutex_type_t mutex_type_t;
-typedef enum condvar_type_t condvar_type_t;
-typedef enum rwlock_type_t rwlock_type_t;
-
-#include <library.h>
-
-#ifdef __APPLE__
-/* on Mac OS X 10.5 several system calls we use are no cancellation points.
- * fortunately, select isn't one of them, so we wrap some of the others with
- * calls to select(2).
- */
-#include <sys/socket.h>
-#include <sys/select.h>
-
-#define WRAP_WITH_SELECT(func, socket, ...)\
- fd_set rfds; FD_ZERO(&rfds); FD_SET(socket, &rfds);\
- if (select(socket + 1, &rfds, NULL, NULL, NULL) <= 0) { return -1; }\
- return func(socket, __VA_ARGS__)
-
-static inline int cancellable_accept(int socket, struct sockaddr *address,
- socklen_t *address_len)
-{
- WRAP_WITH_SELECT(accept, socket, address, address_len);
-}
-#define accept cancellable_accept
-static inline int cancellable_recvfrom(int socket, void *buffer, size_t length,
- int flags, struct sockaddr *address, socklen_t *address_len)
-{
- WRAP_WITH_SELECT(recvfrom, socket, buffer, length, flags, address, address_len);
-}
-#define recvfrom cancellable_recvfrom
-#endif /* __APPLE__ */
-
-/**
- * Type of mutex.
- */
-enum mutex_type_t {
- /** default mutex */
- MUTEX_TYPE_DEFAULT = 0,
- /** allow recursive locking of the mutex */
- MUTEX_TYPE_RECURSIVE = 1,
-};
-
-/**
- * Type of condvar.
- */
-enum condvar_type_t {
- /** default condvar */
- CONDVAR_TYPE_DEFAULT = 0,
-};
-
-/**
- * Type of read-write lock.
- */
-enum rwlock_type_t {
- /** default condvar */
- RWLOCK_TYPE_DEFAULT = 0,
-};
-
-/**
- * Mutex wrapper implements simple, portable and advanced mutex functions.
- */
-struct mutex_t {
-
- /**
- * Acquire the lock to the mutex.
- */
- void (*lock)(mutex_t *this);
-
- /**
- * Release the lock on the mutex.
- */
- void (*unlock)(mutex_t *this);
-
- /**
- * Destroy a mutex instance.
- */
- void (*destroy)(mutex_t *this);
-};
-
-/**
- * Condvar wrapper to use in conjunction with mutex_t.
- */
-struct condvar_t {
-
- /**
- * Wait on a condvar until it gets signalized.
- *
- * @param mutex mutex to release while waiting
- */
- void (*wait)(condvar_t *this, mutex_t *mutex);
-
- /**
- * Wait on a condvar until it gets signalized, or times out.
- *
- * @param mutex mutex to release while waiting
- * @param timeout timeout im ms
- * @return TRUE if timed out, FALSE otherwise
- */
- bool (*timed_wait)(condvar_t *this, mutex_t *mutex, u_int timeout);
-
- /**
- * Wait on a condvar until it gets signalized, or times out.
- *
- * @param mutex mutex to release while waiting
- * @param time absolute time until timeout
- * @return TRUE if timed out, FALSE otherwise
- */
- bool (*timed_wait_abs)(condvar_t *this, mutex_t *mutex, timeval_t timeout);
-
- /**
- * Wake up a single thread in a condvar.
- */
- void (*signal)(condvar_t *this);
-
- /**
- * Wake up all threads in a condvar.
- */
- void (*broadcast)(condvar_t *this);
-
- /**
- * Destroy a condvar and free its resources.
- */
- void (*destroy)(condvar_t *this);
-};
-
-/**
- * Read-Write lock wrapper.
- */
-struct rwlock_t {
-
- /**
- * Acquire the read lock.
- */
- void (*read_lock)(rwlock_t *this);
-
- /**
- * Acquire the write lock.
- */
- void (*write_lock)(rwlock_t *this);
-
- /**
- * Try to acquire the write lock.
- *
- * Never blocks, but returns FALSE if the lock was already occupied.
- *
- * @return TRUE if lock acquired
- */
- bool (*try_write_lock)(rwlock_t *this);
-
- /**
- * Release any acquired lock.
- */
- void (*unlock)(rwlock_t *this);
-
- /**
- * Destroy the read-write lock.
- */
- void (*destroy)(rwlock_t *this);
-};
-
-/**
- * Create a mutex instance.
- *
- * @param type type of mutex to create
- * @return unlocked mutex instance
- */
-mutex_t *mutex_create(mutex_type_t type);
-
-/**
- * Create a condvar instance.
- *
- * @param type type of condvar to create
- * @return condvar instance
- */
-condvar_t *condvar_create(condvar_type_t type);
-
-/**
- * Create a read-write lock instance.
- *
- * @param type type of rwlock to create
- * @return unlocked rwlock instance
- */
-rwlock_t *rwlock_create(rwlock_type_t type);
-
-#endif /** MUTEX_H_ @}*/