Fix: consumer snapshot: handle unsigned long overflow
authorMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Tue, 19 Feb 2019 22:47:49 +0000 (17:47 -0500)
committerJérémie Galarneau <jeremie.galarneau@efficios.com>
Fri, 29 Mar 2019 15:51:47 +0000 (11:51 -0400)
commita578f62ffe6b2f2dbbdf804bc6e07ec8b38f02e6
treeaef800eac2764fc426cb7f0e1100c02dd2f6a604
parentc1fcc06acaf11e0aa324aa9c26870d6a0f457728
Fix: consumer snapshot: handle unsigned long overflow

Comparing the consumed iterator and the produced position without
using a difference generates an empty snapshot when the iterator is
before unsigned long overflow and the produced position is after
unsigned long overflow.

This applies to both UST and kernel consumers.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
src/common/kernel-consumer/kernel-consumer.c
src/common/ust-consumer/ust-consumer.c
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