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chore: Failed to create instance

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Sometimes Ubuntu20.04-24.04 execution of `d->memory->attach()` crashes here
and prints the necessary information to determine that the creation has failed
This commit is contained in:
XMuli 2025-01-04 20:17:46 +08:00
parent 494772e98c
commit 3d459bf28d
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GPG Key ID: 9554B5DD5B8E986A
1 changed files with 26 additions and 2 deletions
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28
singleapplication.cpp
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@ -72,8 +72,9 @@ SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSeconda
#else
d->memory = new QSharedMemory( d->blockServerName );
#endif
d->memory->attach();
delete d->memory;
bool ok = d->memory->attach();
qCritical() << "d->memory->attach():" << ok;
if (ok) delete d->memory;
#endif
// Guarantee thread safe behaviour with a shared memory block.
#if QT_VERSION >= QT_VERSION_CHECK(6, 6, 0)
@ -91,16 +92,24 @@ SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSeconda
}
d->initializeMemoryBlock();
} else {
qCritical() << "Shared memory creation failed:" << d->memory->errorString();
if( d->memory->error() == QSharedMemory::AlreadyExists ){
// Attempt to attach to the memory segment
if( ! d->memory->attach() ){
qCritical() << "SingleApplication: Unable to attach to shared memory block.";
abortSafely();
} else {
qCritical() << "Successfully attached to existing shared memory block";
}
if( ! d->memory->lock() ){
qCritical() << "SingleApplication: Unable to lock memory block after attach.";
abortSafely();
} else {
qCritical() << "Memory block successfully locked";
}
} else {
qCritical() << "SingleApplication: Unable to create block.";
abortSafely();
@ -108,6 +117,21 @@ SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSeconda
}
auto *inst = static_cast<InstancesInfo*>( d->memory->data() );
if (!inst) {
qCritical() << "Shared memory data is NULL!";
abortSafely();
} else {
qCritical() << "Shared memory data doesn't NULL!";
qCritical() << "Primary: " << inst->primary << QString::asprintf("0x%X", inst->primary);
qCritical() << "Secondary: " << inst->secondary << QString::asprintf("0x%X", inst->secondary);
qCritical() << "Primary PID: " << inst->primaryPid << QString::asprintf("0x%llX", inst->primaryPid);
qCritical() << "Checksum: " << inst->checksum << QString::asprintf("0x%X", inst->checksum);
qCritical() << "Primary User: " << inst->primaryUser;
}
QElapsedTimer time;
time.start();