70 lines
2.4 KiB
C
70 lines
2.4 KiB
C
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#ifndef __REFTRCE2_H__
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#define __REFTRCE2_H__
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#if SERVICE_REF_TRACKING
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# include <reftrace.h>
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# define SHARED_LOG_REF_COUNT() \
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( sm_pDbgRefTraceLog != NULL ) ? \
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WriteRefTraceLog( \
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sm_pDbgRefTraceLog \
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, m_reference \
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, this \
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) \
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: -1 \
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//
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// This macro logs the IIS_SERVICE-specific ref trace log
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//
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# define LOCAL_LOG_REF_COUNT() \
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( m_pDbgRefTraceLog != NULL ) ? \
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WriteRefTraceLog( \
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m_pDbgRefTraceLog \
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, m_reference \
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, this \
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) \
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: -1 \
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//
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// Usage of above macros AFTER we decremented reference count
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// was unsafe. Under stress we would sometimes hit assert
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// in WriteTraceLog() because IIS_SERVICE::m_pDbgRefTraceLog
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// was no longer valid. This was due to a race condition where
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// another thread deletes IIS_SERVICE object while we are still
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// doing the log.
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// So, instead of using original macros AFTER the decrement
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// use modified macros BEFORE the decrement. This should
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// result in identical logs most of the time (subject to
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// race conditions and our guessing of what post decrement
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// reference count will be).
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//
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# define SHARED_EARLY_LOG_REF_COUNT() \
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( sm_pDbgRefTraceLog != NULL ) ? \
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WriteRefTraceLog( \
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sm_pDbgRefTraceLog \
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, m_reference - 1 \
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, this \
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) \
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: -1 \
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# define LOCAL_EARLY_LOG_REF_COUNT() \
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( m_pDbgRefTraceLog != NULL ) ? \
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WriteRefTraceLog( \
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m_pDbgRefTraceLog \
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, m_reference - 1 \
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, this \
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) \
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: -1 \
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#else // !SERVICE_REF_TRACKING
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# define SHARED_LOG_REF_COUNT() (-1)
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# define LOCAL_LOG_REF_COUNT() (-1)
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# define SHARED_EARLY_LOG_REF_COUNT() (-1)
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# define LOCAL_EARLY_LOG_REF_COUNT() (-1)
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#endif // !SERVICE_REF_TRACKING
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#endif // __REFTRCE2_H__
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