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@@ -32,18 +32,12 @@ class MutexSpinlockImpl;
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////////////////////////////////////////////////////////////////////
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// Class : ConditionVarSpinlockImpl
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-// Description : Uses Windows native calls to implement a
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-// conditionVar.
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-//
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-// The Windows native synchronization primitives don't
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-// actually implement a full POSIX-style condition
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-// variable, but the Event primitive does a fair job if
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-// we disallow POSIX broadcast. See
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-// http://www.cs.wustl.edu/~schmidt/spinlock-cv-1.html for
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-// a full implementation that includes broadcast. This
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-// class is much simpler than that full implementation,
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-// so we can avoid the overhead require to support
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-// broadcast.
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+// Description : Uses a simple user-space spinlock to implement a
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+// condition variable. It is usually not a good idea to
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+// use this implementation, unless you are building
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+// Panda for a specific application on a specific SMP
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+// machine, and you are confident that you have at least
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+// as many CPU's as you have threads.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA ConditionVarSpinlockImpl {
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public:
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David Rose