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+/* ath.c - Thread-safeness library.
+ Copyright (C) 2002, 2003, 2004 g10 Code GmbH
+
+ This file is part of GPGME.
+
+ GPGME is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of
+ the License, or (at your option) any later version.
+
+ GPGME 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser 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. */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <assert.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#ifdef HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#else
+# ifdef HAVE_SYS_TIME_H
+# include <sys/time.h>
+# endif
+#endif
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifndef HAVE_W32_SYSTEM
+#include <sys/wait.h>
+#endif
+
+#ifdef _MSC_VER
+ typedef long ssize_t;
+ typedef int pid_t;
+#endif
+
+#include "ath.h"
+
+
+#define MUTEX_UNLOCKED ((ath_mutex_t) 0)
+#define MUTEX_LOCKED ((ath_mutex_t) 1)
+#define MUTEX_DESTROYED ((ath_mutex_t) 2)
+
+
+#ifdef HAVE_W32_SYSTEM
+#include <windows.h>
+uintptr_t
+ath_self (void)
+{
+ return (uintptr_t) GetCurrentThreadId ();
+}
+#else
+# ifdef __linux
+#include <sys/syscall.h>
+uintptr_t
+ath_self (void)
+{
+ /* Just to catch users who don't use gpgme-pthread. */
+ return (uintptr_t) syscall (__NR_gettid);
+}
+# else
+uintptr_t
+ath_self (void)
+{
+ return (uintptr_t) getpid ();
+}
+# endif
+#endif
+
+
+int
+ath_mutex_init (ath_mutex_t *lock)
+{
+#ifndef NDEBUG
+ *lock = MUTEX_UNLOCKED;
+#endif
+ return 0;
+}
+
+
+int
+ath_mutex_destroy (ath_mutex_t *lock)
+{
+#ifndef NDEBUG
+ assert (*lock == MUTEX_UNLOCKED);
+
+ *lock = MUTEX_DESTROYED;
+#endif
+ return 0;
+}
+
+
+int
+ath_mutex_lock (ath_mutex_t *lock)
+{
+#ifndef NDEBUG
+ assert (*lock == MUTEX_UNLOCKED);
+
+ *lock = MUTEX_LOCKED;
+#endif
+ return 0;
+}
+
+
+int
+ath_mutex_unlock (ath_mutex_t *lock)
+{
+#ifndef NDEBUG
+ assert (*lock == MUTEX_LOCKED);
+
+ *lock = MUTEX_UNLOCKED;
+#endif
+ return 0;
+}
+
+
+ssize_t
+ath_read (int fd, void *buf, size_t nbytes)
+{
+#if defined(HAVE_W32CE_SYSTEM) && defined(_MSC_VER)
+ return -1; /* Not supported. */
+#else
+ return read (fd, buf, nbytes);
+#endif
+}
+
+
+ssize_t
+ath_write (int fd, const void *buf, size_t nbytes)
+{
+#if defined(HAVE_W32CE_SYSTEM) && defined(_MSC_VER)
+ return -1; /* Not supported. */
+#else
+ return write (fd, buf, nbytes);
+#endif
+}
+
+
+ssize_t
+ath_select (int nfd, fd_set *rset, fd_set *wset, fd_set *eset,
+ struct timeval *timeout)
+{
+#ifdef HAVE_W32_SYSTEM
+ return -1; /* Not supported. */
+#else
+ return select (nfd, rset, wset, eset, timeout);
+#endif
+}
+
+
+ssize_t
+ath_waitpid (pid_t pid, int *status, int options)
+{
+#ifdef HAVE_W32_SYSTEM
+ return -1; /* Not supported. */
+#else
+ return waitpid (pid, status, options);
+#endif
+}
+
+
+int
+ath_accept (int s, struct sockaddr *addr, socklen_t *length_ptr)
+{
+#ifdef HAVE_W32_SYSTEM
+ return -1; /* Not supported. */
+#else
+ return accept (s, addr, length_ptr);
+#endif
+}
+
+
+int
+ath_connect (int s, const struct sockaddr *addr, socklen_t length)
+{
+#ifdef HAVE_W32_SYSTEM
+ return -1; /* Not supported. */
+#else
+ return connect (s, addr, length);
+#endif
+}
+
+
+int
+ath_sendmsg (int s, const struct msghdr *msg, int flags)
+{
+#ifdef HAVE_W32_SYSTEM
+ return -1; /* Not supported. */
+#else
+ return sendmsg (s, msg, flags);
+#endif
+}
+
+
+int
+ath_recvmsg (int s, struct msghdr *msg, int flags)
+{
+#ifdef HAVE_W32_SYSTEM
+ return -1; /* Not supported. */
+#else
+ return recvmsg (s, msg, flags);
+#endif
+}