* Added debug output.

* Passing a NULL parameter to file_cache_delete() is OK.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29553 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/file_systems/userlandfs/server/haiku/file_cache.cpp

@@ -8,6 +8,7 @@
 #include <new>
 
 #include "AutoDeleter.h"
+#include "Debug.h"
 
 #include "../kernel_emu.h"
 
@@ -30,20 +31,25 @@ struct FileCache {
 void*
 file_cache_create(dev_t mountID, ino_t vnodeID, off_t size)
 {
+	PRINT(("file_cache_create(%ld, %lld, %lld)\n", mountID, vnodeID, size));
+
 	// create the client-side object
 	FileCache* fileCache = new(std::nothrow) FileCache(mountID, vnodeID);
 	if (fileCache == NULL)
 		return NULL;
 	ObjectDeleter<FileCache> cacheDeleter(fileCache);
 
-
 	// create the kernel-size file cache
 	status_t error = UserlandFS::KernelEmu::file_cache_create(mountID, vnodeID,
 		size);
-	if (error != B_OK)
+	if (error != B_OK) {
+		REPORT_ERROR(error);
 		return NULL;
+	}
 
 	cacheDeleter.Detach();
+
+	PRINT(("file_cache_create() -> %p\n", fileCache));
 	return fileCache;
 }
 
@@ -51,6 +57,11 @@ file_cache_create(dev_t mountID, ino_t vnodeID, off_t size)
 void
 file_cache_delete(void *cacheRef)
 {
+	if (cacheRef == NULL)
+		return;
+
+	PRINT(("file_cache_delete(%p)\n", cacheRef));
+
 	FileCache* fileCache = (FileCache*)cacheRef;
 
 	UserlandFS::KernelEmu::file_cache_delete(fileCache->mountID,
@@ -63,6 +74,8 @@ file_cache_delete(void *cacheRef)
 void
 file_cache_enable(void *cacheRef)
 {
+	PRINT(("file_cache_enable(%p)\n", cacheRef));
+
 	FileCache* fileCache = (FileCache*)cacheRef;
 
 	if (fileCache->enabled)
@@ -87,6 +100,8 @@ file_cache_is_enabled(void *cacheRef)
 status_t
 file_cache_disable(void *cacheRef)
 {
+	PRINT(("file_cache_disable(%p)\n", cacheRef));
+
 	FileCache* fileCache = (FileCache*)cacheRef;
 
 	if (!fileCache->enabled)
@@ -104,6 +119,8 @@ file_cache_disable(void *cacheRef)
 status_t
 file_cache_set_size(void *cacheRef, off_t size)
 {
+	PRINT(("file_cache_set_size(%p)\n", cacheRef));
+
 	FileCache* fileCache = (FileCache*)cacheRef;
 
 	return UserlandFS::KernelEmu::file_cache_set_size(fileCache->mountID,
@@ -114,6 +131,8 @@ file_cache_set_size(void *cacheRef, off_t size)
 status_t
 file_cache_sync(void *cacheRef)
 {
+	PRINT(("file_cache_sync(%p)\n", cacheRef));
+
 	FileCache* fileCache = (FileCache*)cacheRef;
 
 	return UserlandFS::KernelEmu::file_cache_sync(fileCache->mountID,
@@ -125,6 +144,9 @@ status_t
 file_cache_read(void *cacheRef, void *cookie, off_t offset, void *bufferBase,
 	size_t *_size)
 {
+	PRINT(("file_cache_read(%p, %p, %lld, %p, %lu)\n", cacheRef, cookie, offset,
+		bufferBase, *_size));
+
 	FileCache* fileCache = (FileCache*)cacheRef;
 
 	return UserlandFS::KernelEmu::file_cache_read(fileCache->mountID,
@@ -136,6 +158,9 @@ status_t
 file_cache_write(void *cacheRef, void *cookie, off_t offset, const void *buffer,
 	size_t *_size)
 {
+	PRINT(("file_cache_write(%p, %p, %lld, %p, %lu)\n", cacheRef, cookie,
+		offset, buffer, *_size));
+
 	FileCache* fileCache = (FileCache*)cacheRef;
 
 	return UserlandFS::KernelEmu::file_cache_write(fileCache->mountID,