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VisualProcessor : protect against null input queue

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This commit is contained in:
vsonnier 2017-10-15 08:51:01 +02:00
parent f4107c1541
commit 6019207bd4
1 changed files with 11 additions and 2 deletions
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11
src/process/VisualProcessor.h
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@ -30,9 +30,13 @@ public:
bool isInputEmpty() { bool isInputEmpty() {
std::lock_guard < std::mutex > busy_lock(busy_update); std::lock_guard < std::mutex > busy_lock(busy_update);
if (input) {
return input->empty(); return input->empty();
} }
return true;
}
bool isOutputEmpty() { bool isOutputEmpty() {
std::lock_guard < std::mutex > busy_lock(busy_update); std::lock_guard < std::mutex > busy_lock(busy_update);
@ -84,7 +88,12 @@ public:
//this is purposefully (almost) non-blocking call. //this is purposefully (almost) non-blocking call.
void flushQueues() { void flushQueues() {
input->flush(); //capture a local copy atomically, so we don't need to protect input.
VisualInputQueueTypePtr localInput = input;
if (localInput) {
localInput->flush();
}
//scoped-lock: create a local copy of outputs, and work with it. //scoped-lock: create a local copy of outputs, and work with it.
std::vector<VisualOutputQueueTypePtr> local_outputs; std::vector<VisualOutputQueueTypePtr> local_outputs;