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[commtech] Prevent prefetch in batch queue 

Prevent prefetch of state variable in BatchQueue by adding padding
between the buffers and state variable.
This commit is contained in:
Thomas Preud'homme 2011-03-02 12:49:09 +01:00
parent 1388b6d556
commit 023552a4de
1 changed files with 1 additions and 0 deletions
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communication_techniques/include/batch_queue_comm.h
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@ -15,6 +15,7 @@
struct channel
{
void * volatile buf[2 * BUF_SIZE / sizeof(void *)] __attribute__ ((aligned (CACHE_LINE_SIZE)));
int unused[20] __attribute__ ((aligned (CACHE_LINE_SIZE)));
volatile int state __attribute__ ((aligned (CACHE_LINE_SIZE)));
int idx __attribute__ ((aligned (CACHE_LINE_SIZE)));
};