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fix: RunGuard not works on Qt6

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Closes: #955
This commit is contained in:
purofle 2023-10-31 15:24:26 +08:00
parent a6e7dfe717
commit 32ef100cf3
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GPG Key ID: 57DEC1478152D973
1 changed files with 11 additions and 5 deletions
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16
3rdparty/RunGuard.hpp vendored
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@ -58,12 +58,12 @@ RunGuard::~RunGuard() {
}
bool RunGuard::isAnotherRunning(quint64 *data_out) {
if (sharedMem.isAttached())
if (sharedMem.isAttached()) {
return false;
}
memLock.acquire();
const bool isRunning = sharedMem.attach();
if (isRunning) {
const bool isRunning = sharedMem.create(sizeof(quint64));if (!isRunning) {
if (data_out != nullptr) {
memcpy(data_out, sharedMem.data(), sizeof(quint64));
}
@ -71,15 +71,21 @@ bool RunGuard::isAnotherRunning(quint64 *data_out) {
}
memLock.release();
return isRunning;
return !isRunning;
}
bool RunGuard::tryToRun(quint64 *data_in) {
if (isAnotherRunning(nullptr)) // Extra check
return false;
memLock.acquire();
const bool result = sharedMem.create(sizeof(quint64));
bool result = sharedMem.attach();
// if success attach, attach return false but the error is NoError, magic, love from qt6
// qt docs: If false is returned, call error() to determine which error occurred.
if (!result) if (sharedMem.error() == QSharedMemory::NoError) result = true;
if (result) memcpy(sharedMem.data(), data_in, sizeof(quint64));
memLock.release();