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qt: get required locks upfront in polling functions

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This avoids the GUI from getting stuck on
periodical polls if the core is holding the locks for a longer time -
for example, during a wallet rescan.
This commit is contained in:
Wladimir J. van der Laan
2014-04-23 08:40:48 +02:00
parent ed67100565
commit 41106a50d2
3 changed files with 34 additions and 18 deletions
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6
src/qt/clientmodel.cpp
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@@ -92,6 +92,12 @@ double ClientModel::getVerificationProgress() const
void ClientModel::updateTimer()
{
// Get required lock upfront. This avoids the GUI from getting stuck on
// periodical polls if the core is holding the locks for a longer time -
// for example, during a wallet rescan.
TRY_LOCK(cs_main, lockMain);
if(!lockMain)
return;
// Some quantities (such as number of blocks) change so fast that we don't want to be notified for each change.
// Periodically check and update with a timer.
int newNumBlocks = getNumBlocks();