Split YAZ library into two libs : libyaz.la and libyaz_server.la.

[yaz-moved-to-github.git] / src / mutex.c

diff --git a/src/mutex.c b/src/mutex.c
new file mode 100644 (file)
index 0000000..b2c8c49
--- /dev/null
+++ b/src/mutex.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 1995-2007, Index Data ApS
+ * See the file LICENSE for details.
+ *
+ * $Id: mutex.c,v 1.1 2007-04-17 20:26:18 adam Exp $
+ */
+
+/**
+ * \file mutex.c
+ * \brief Implements MUTEX functions
+ *
+ */
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <stddef.h>
+#include <yaz/xmalloc.h>
+#include <yaz/nmem.h>
+#include <yaz/log.h>
+#include <yaz/mutex.h>
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+#if YAZ_POSIX_THREADS
+#include <pthread.h>
+#endif
+
+#if YAZ_GNU_THREADS
+#include <pth.h>
+#endif
+
+#ifdef WIN32
+struct yaz_mutex {
+    CRITICAL_SECTION m_handle;
+};
+#elif YAZ_POSIX_THREADS
+struct yaz_mutex {
+    pthread_mutex_t m_handle;
+};
+#elif YAZ_GNU_THREADS
+struct yaz_mutex {
+    pth_mutex_t m_handle;
+};
+#else
+struct yaz_mutex {
+    int dummy;
+};
+#endif
+
+YAZ_EXPORT void yaz_mutex_create(YAZ_MUTEX *p)
+{
+    if (!*p)
+    {
+        *p = (YAZ_MUTEX) malloc(sizeof(**p));
+#ifdef WIN32
+        InitializeCriticalSection(&(*p)->m_handle);
+#elif YAZ_POSIX_THREADS
+        pthread_mutex_init(&(*p)->m_handle, 0);
+#elif YAZ_GNU_THREADS
+        pth_mutex_init(&(*p)->m_handle);
+#endif
+    }
+}
+
+YAZ_EXPORT void yaz_mutex_enter(YAZ_MUTEX p)
+{
+    if (p)
+    {
+#ifdef WIN32
+        EnterCriticalSection(&p->m_handle);
+#elif YAZ_POSIX_THREADS
+        pthread_mutex_lock(&p->m_handle);
+#endif
+    }
+}
+
+YAZ_EXPORT void yaz_mutex_leave(YAZ_MUTEX p)
+{
+    if (p)
+    {
+#ifdef WIN32
+        LeaveCriticalSection(&p->m_handle);
+#elif YAZ_POSIX_THREADS
+        pthread_mutex_unlock(&p->m_handle);
+#endif
+    }
+}
+
+YAZ_EXPORT void yaz_mutex_destroy(YAZ_MUTEX *p)
+{
+    if (*p)
+    {
+#ifdef WIN32
+        DeleteCriticalSection(&(*p)->m_handle);
+#endif
+        free(*p);
+        *p = 0;
+    }
+}
+
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+