Provide a Win32 implementation of the 'cond' module.

[gnulib.git] / lib / glthread / cond.h

diff --git a/lib/glthread/cond.h b/lib/glthread/cond.h
index e6707b8..fca1cbf 100644 (file)
--- a/lib/glthread/cond.h
+++ b/lib/glthread/cond.h
@@ -269,7 +269,64 @@ extern int glthread_cond_timedwait_multithreaded (gl_cond_t *cond, gl_lock_t *lo
 
 /* ========================================================================= */
 
-#if !(USE_POSIX_THREADS || USE_PTH_THREADS || USE_SOLARIS_THREADS)
+#if USE_WIN32_THREADS
+
+# include <windows.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+/* -------------------------- gl_cond_t datatype -------------------------- */
+
+typedef struct
+        {
+          gl_spinlock_t guard; /* protects the initialization */
+          CRITICAL_SECTION lock; /* protects the remaining fields */
+          HANDLE event; /* an event configured for manual reset */
+          unsigned int waiters_count; /* number of threads currently waiting */
+          unsigned int release_count; /* number of threads that are currently
+                                         being notified but have not yet
+                                         acknowledged. Always
+                                         release_count <= waiters_count */
+          unsigned int wait_generation_count; /* incremented each time a signal
+                                                 or broadcast is performed */
+        }
+        gl_cond_t;
+# define gl_cond_define(STORAGECLASS, NAME) \
+    STORAGECLASS gl_cond_t NAME;
+# define gl_cond_define_initialized(STORAGECLASS, NAME) \
+    STORAGECLASS gl_cond_t NAME = gl_cond_initializer;
+# define gl_cond_initializer \
+    { { 0, -1 } }
+# define glthread_cond_init(COND) \
+    glthread_cond_init_func (COND)
+# define glthread_cond_wait(COND, LOCK) \
+    glthread_cond_wait_func (COND, LOCK)
+# define glthread_cond_timedwait(COND, LOCK, ABSTIME) \
+    glthread_cond_timedwait_func (COND, LOCK, ABSTIME)
+# define glthread_cond_signal(COND) \
+    glthread_cond_signal_func (COND)
+# define glthread_cond_broadcast(COND) \
+    glthread_cond_broadcast_func (COND)
+# define glthread_cond_destroy(COND) \
+    glthread_cond_destroy_func (COND)
+extern int glthread_cond_init_func (gl_cond_t *cond);
+extern int glthread_cond_wait_func (gl_cond_t *cond, gl_lock_t *lock);
+extern int glthread_cond_timedwait_func (gl_cond_t *cond, gl_lock_t *lock, struct timespec *abstime);
+extern int glthread_cond_signal_func (gl_cond_t *cond);
+extern int glthread_cond_broadcast_func (gl_cond_t *cond);
+extern int glthread_cond_destroy_func (gl_cond_t *cond);
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif
+
+/* ========================================================================= */
+
+#if !(USE_POSIX_THREADS || USE_PTH_THREADS || USE_SOLARIS_THREADS || USE_WIN32_THREADS)
 
 /* Provide dummy implementation if threads are not supported.  */