1 files changed, 59 insertions, 0 deletions
diff --git a/tools/debugserver/source/PThreadEvent.h b/tools/debugserver/source/PThreadEvent.h
new file mode 100644
index 000000000000..46c7cc09b121
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+++ b/tools/debugserver/source/PThreadEvent.h
@@ -0,0 +1,59 @@
+//===-- PThreadEvent.h ------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  Created by Greg Clayton on 6/16/07.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __PThreadEvent_h__
+#define __PThreadEvent_h__
+#include "PThreadMutex.h"
+#include "PThreadCondition.h"
+#include <stdint.h>
+#include <time.h>
+
+class PThreadEvent
+{
+public:
+                PThreadEvent        (uint32_t bits = 0, uint32_t validBits = 0);
+                ~PThreadEvent       ();
+
+    uint32_t    NewEventBit         ();
+    void        FreeEventBits       (const uint32_t mask);
+
+    void        ReplaceEventBits    (const uint32_t bits);
+    uint32_t    GetEventBits        () const;
+    void        SetEvents           (const uint32_t mask);
+    void        ResetEvents         (const uint32_t mask);
+    // Wait for events to be set or reset. These functions take an optional
+    // timeout value. If timeout is NULL an infinite timeout will be used.
+    uint32_t    WaitForSetEvents    (const uint32_t mask, const struct timespec *timeout_abstime = NULL) const;
+    uint32_t    WaitForEventsToReset(const uint32_t mask, const struct timespec *timeout_abstime = NULL) const;
+
+    uint32_t    GetResetAckMask () const { return m_reset_ack_mask; }
+    uint32_t    SetResetAckMask (uint32_t mask) { return m_reset_ack_mask = mask; }
+    uint32_t    WaitForResetAck (const uint32_t mask, const struct timespec *timeout_abstime = NULL) const;
+protected:
+    //----------------------------------------------------------------------
+    // pthread condition and mutex variable to control access and allow
+    // blocking between the main thread and the spotlight index thread.
+    //----------------------------------------------------------------------
+    mutable PThreadMutex        m_mutex;
+    mutable PThreadCondition    m_set_condition;
+    mutable PThreadCondition    m_reset_condition;
+    uint32_t            m_bits;
+    uint32_t            m_validBits;
+    uint32_t            m_reset_ack_mask;
+private:
+    PThreadEvent(const PThreadEvent&);  // Outlaw copy constructor
+    PThreadEvent& operator=(const PThreadEvent& rhs);
+
+};
+
+#endif // #ifndef __PThreadEvent_h__