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Rewrote KDiskDeviceManager::CreateDefault() to be easier to read and actually

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return the correct error code in case there is one.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7932 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-06-12 20:57:11 +00:00
parent 65f8356f78
commit f6fed308e3
1 changed files with 30 additions and 22 deletions
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52
src/kernel/core/disk_device_manager/KDiskDeviceManager.cpp
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@ -37,6 +37,11 @@
static const char *kPartitioningSystemPrefix = "partitioning_systems";
static const char *kFileSystemPrefix = "file_systems";
// singleton instance
KDiskDeviceManager *KDiskDeviceManager::sDefaultManager = NULL;
// is_active_job_status
static
bool
@ -200,38 +205,43 @@ KDiskDeviceManager::InitCheck() const
return (fLock.Sem() >= 0 ? B_OK : fLock.Sem());
}
// CreateDefault
/** This creates the system's default DiskDeviceManager.
* The creation is not thread-safe, and shouldn't be done
* more than once.
*/
status_t
KDiskDeviceManager::CreateDefault()
{
status_t error = B_OK;
if (!fDefaultManager) {
fDefaultManager = new(nothrow) KDiskDeviceManager;
if (fDefaultManager) {
error = fDefaultManager->InitCheck();
if (error != B_OK)
DeleteDefault();
} else
error = B_NO_MEMORY;
}
return (fDefaultManager ? B_OK : B_NO_MEMORY);
if (sDefaultManager != NULL)
return B_OK;
sDefaultManager = new(nothrow) KDiskDeviceManager;
if (sDefaultManager == NULL)
return B_NO_MEMORY;
return sDefaultManager->InitCheck();
}
// DeleteDefault
/** This deletes the default DiskDeviceManager. The
* deletion is not thread-safe either, you should
* make sure that it's called only once.
*/
void
KDiskDeviceManager::DeleteDefault()
{
if (fDefaultManager) {
delete fDefaultManager;
fDefaultManager = NULL;
}
delete sDefaultManager;
sDefaultManager = NULL;
}
// Default
KDiskDeviceManager *
KDiskDeviceManager::Default()
{
return fDefaultManager;
return sDefaultManager;
}
// Lock
@ -906,9 +916,11 @@ KDiskDeviceManager::_AddFileSystem(const char *name)
{
if (!name)
return B_BAD_VALUE;
KDiskSystem *diskSystem = new(nothrow) KFileSystem(name);
if (!diskSystem)
return B_NO_MEMORY;
return _AddDiskSystem(diskSystem);
}
@ -1132,7 +1144,3 @@ KDiskDeviceManager::_ScanPartition(KPartition *partition)
return error;
}
// singleton instance
KDiskDeviceManager *KDiskDeviceManager::fDefaultManager = NULL;