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0230389593
The node blocks a certain amount of samples to use in its queues. Before this commit, the only moment to release them to the framwork was during ib_read()/ib_write(). But, there were a couple of problems. In the following I will take ib_read() as example, but ib_write() will be analogous. The first problem was: 1. If a QP disconnect, all Work Requests get invalidated and will be "flushed" to a Completion Queue. A possible solution would be, to save them in an intermediate buffer. We could then "exchange" these samples with the framework as soon as the node connects again and ib_read() is called again. So, we would get valid samples from the framwork, post them, and give the "invalidated" samples back. But, there is a second problem: 2. We cannot assume that ib_read() is ever called again after ib_disconnect(). This is for example the case if the disconnect is triggered by ib_stop() and not by an external node that disconnects. This would result in a memory leak, since the samples would never be returned to the framework, although the node is stopped. Because of this second problem, I decided to return all samples with sample_put() in the disconnect function. An additional benefit is that this is more convenient than another buffer to temporarily safe the invalidated samples. |
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| .. | ||
| api | ||
| formats | ||
| hooks | ||
| kernel | ||
| memory | ||
| nodes | ||
| advio.c | ||
| api.c | ||
| bitset.c | ||
| buffer.c | ||
| CMakeLists.txt | ||
| compat.c | ||
| config_helper.c | ||
| crypt.c | ||
| format_type.c | ||
| hash_table.c | ||
| hist.c | ||
| hook.c | ||
| hook_type.c | ||
| io.c | ||
| list.c | ||
| log.c | ||
| log_config.c | ||
| log_helper.c | ||
| mapping.c | ||
| memory.c | ||
| node.c | ||
| node_type.c | ||
| path.c | ||
| plugin.c | ||
| pool.c | ||
| queue.c | ||
| queue_signalled.c | ||
| sample.c | ||
| shmem.c | ||
| signal.c | ||
| stats.c | ||
| super_node.c | ||
| table.c | ||
| task.c | ||
| timing.c | ||
| utils.c | ||
| web.c | ||