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Fixed possible buffer overrun in the XPLAINBridge project when in serial bridge mode.

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This commit is contained in:
Dean Camera
2010-07-15 04:45:31 +00:00
parent 7cef08e10e
commit e2e1fe5aad
5 changed files with 62 additions and 2 deletions
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20
Projects/XPLAINBridge/Lib/LightweightRingBuff.h
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@@ -75,6 +75,26 @@
Buffer->Count = 0;
}
/** Atomically determines if the specified ring buffer contains any free space. This should
* be tested before storing data to the buffer, to ensure that no data is lost due to a
* buffer overrun.
*
* \param[in,out] Buffer Pointer to a ring buffer structure to insert into
*
* \return Boolean true if the buffer contains no free space, false otherwise
*/
static inline bool RingBuffer_IsFull(RingBuff_t* const Buffer)
{
bool IsFull;
ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
{
IsFull = (Buffer->Count == BUFFER_SIZE);
}
return IsFull;
}
/** Atomically inserts an element into the ring buffer.
*
* \param[in,out] Buffer Pointer to a ring buffer structure to insert into