AlFire wrote:
Hi,
all is very simple and by the end of the program life I expect the
counter to zero out.
however I am getting values -1, -2, 1 ,2 ,3 and quite often 0 as expected.
I guarded those statement with Lock.{acquire,release} and now it always
returns 0.
But I still can not believe that +=1 is not a thread safe operation.
Any clue?
"counter += 1" is not an atomic operation, apparently. Sorry.
However, appending and removing from a list or dict are atomic operations,
because if they were not, memory allocation would break.
John Nagle
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