xnu-3247.1.106.tar.gz

[apple/xnu.git] / bsd / hfs / hfs_hotfiles.h

diff --git a/bsd/hfs/hfs_hotfiles.h b/bsd/hfs/hfs_hotfiles.h
index 5c1ac29bba77bb8538d10c4fea734cf279629c9d..7d868195458e9e2f6e4a9a1724c44763018cc8bc 100644 (file)
--- a/bsd/hfs/hfs_hotfiles.h
+++ b/bsd/hfs/hfs_hotfiles.h
@@ -40,11 +40,11 @@
 /*
  * Temperature measurement constraints.
  */
-#define HFC_DEFAULT_FILE_COUNT  1000
-#define HFC_DEFAULT_DURATION            (3600 * 60)
+#define HFC_DEFAULT_FILE_COUNT  hfc_default_file_count
+#define HFC_DEFAULT_DURATION     hfc_default_duration
 #define HFC_CUMULATIVE_CYCLES   3
-#define HFC_MAXIMUM_FILE_COUNT  5000
-#define HFC_MAXIMUM_FILESIZE    (10 * 1024 * 1024)
+#define HFC_MAXIMUM_FILE_COUNT  hfc_max_file_count
+#define HFC_MAXIMUM_FILESIZE    hfc_max_file_size 
 #define HFC_MINIMUM_TEMPERATURE  24
 
 
@@ -95,9 +95,16 @@ struct HotFilesInfo {
        u_int32_t       timeleft;    /* time remaining in recording period (secs) */
        u_int32_t       threshold;
        u_int32_t       maxfileblks;
-       u_int32_t       maxfilecnt;
+       union {
+               u_int32_t       _maxfilecnt;   // on hdd's we track the max # of files
+               u_int32_t       _usedblocks;   // on ssd's we track how many blocks are used
+       } _u;
        u_int8_t        tag[32];
 };
+
+#define usedblocks _u._usedblocks
+#define maxfilecnt _u._maxfilecnt
+
 typedef struct HotFilesInfo HotFilesInfo;
 
 #define HFC_MAGIC      0xFF28FF26
@@ -118,6 +125,11 @@ int  hfs_recording_suspend (struct hfsmount *);
 
 int  hfs_addhotfile (struct vnode *);
 int  hfs_removehotfile (struct vnode *);
+int  hfs_hotfile_deleted(struct vnode *vp);   // called when a file is deleted
+void hfs_repin_hotfiles(struct hfsmount *);
+
+// call this to adjust the number of used hotfile blocks either up/down
+int  hfs_hotfile_adjust_blocks(struct vnode *vp, int64_t num_blocks);
 
 #endif /* __APPLE_API_PRIVATE */
 #endif /* KERNEL */