Improved the test application: it now accepts a test disk image as first

parameter (else it falls back to the old behaviour, trying to open
/boot/home/tmp/test-file-device).
Also fixed the hackish busy loop to at least snooze() a bit (so that it
doesn't use all your CPU energy while debugging a partitioning module :-)).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4475 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/tests/kernel/core/disk_device_manager/DiskDeviceManagerTest.cpp

@@ -9,6 +9,7 @@
 #include <OS.h>
 
 #include <KDiskDevice.h>
+#include <KFileDiskDevice.h>
 #include <KDiskDeviceManager.h>
 #include <KDiskDeviceUtils.h>
 
@@ -16,21 +17,30 @@ const char *kTestFileDevice = "/boot/home/tmp/test-file-device";
 
 // main
 int
-main()
+main(int argc, char **argv)
 {
+	const char *testFileDevice = kTestFileDevice;
+
+	if (argc > 1)
+		testFileDevice = argv[1];
+
 	KDiskDeviceManager::CreateDefault();
 	KDiskDeviceManager *manager = KDiskDeviceManager::Default();
 	manager->InitialDeviceScan();
-	partition_id id = manager->CreateFileDevice(kTestFileDevice);
+	partition_id id = manager->CreateFileDevice(testFileDevice);
 	if (id < B_OK)
 		printf("creating the file device failed: %s\n", strerror(id));
+
 	// wait for scanning jobs to finish
+	// (that's hopefully a hack :-))
 	for (;;) {
 		if (ManagerLocker locker = manager) {
 			if (manager->CountJobs() == 0)
 				break;
 		}
+		snooze(50000);
 	}
+
 	// print devices
 	for (int32 cookie = 0;
 		 KDiskDevice *device = manager->RegisterNextDevice(&cookie); ) {