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Code Issues

Don't progress transaction queue if any are partially complete

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This fixes an issue where views might commit to a transaction ahead of
the first one, and applying the first transaction causes us to save a
buffer of the wrong size.
This commit is contained in:
Ryan Dwyer 2018-08-11 20:04:44 +10:00
parent 4d023c0390
commit e7a7306063
1 changed files with 12 additions and 0 deletions
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12
sway/desktop/transaction.c
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@ -213,6 +213,18 @@ static void transaction_apply(struct sway_transaction *transaction) {
}
static void transaction_progress_queue() {
// Check if any transactions in the queue are in a partially ready state.
// If so, we shouldn't progress any transactions, even ones which are fully
// ready at the front of the queue, because the views in the ready
// transactions might have committed past it to a transaction which isn't
// yet ready.
for (int i = 0; i < server.transactions->length; ++i) {
struct sway_transaction *transaction = server.transactions->items[i];
if (transaction->num_waiting != 0 &&
transaction->num_waiting != transaction->num_configures) {
return;
}
}
while (server.transactions->length) {
struct sway_transaction *transaction = server.transactions->items[0];
if (transaction->num_waiting) {