Changeset 2886 for trunk/src/kmk/dir-nt-bird.c

Timestamp:

Sep 6, 2016, 4:31:46 PM (9 years ago)

Author:

bird

Message:

kmk: Added $(dircache-ctl cmd,...) function for controlling the directory content cache on windows. Some other optimizations.

File:

• trunk/src/kmk/dir-nt-bird.c (modified) (3 diffs)

trunk/src/kmk/dir-nt-bird.c

@@ -75 +75 @@
 /** Number of times dir_cache_invalid_missing was called. */
 static KU32 g_cInvalidates = 0;
+/** Set by dir_cache_volatile_dir to indicate that the user has marked the
+ * volatile parts of the file system with custom revisioning and we only need to
+ * flush these.  This is very handy when using a separate output directory
+ * from the sources.  */
+static KBOOL g_fFsCacheIsUsingCustomRevision = K_FALSE;
 
 
@@ -505 +510 @@
 }
 
-
-/**
- * Invalidate missing bits of the directory cache.
- *
- * This is called each time a make job completes.
- */
-void dir_cache_invalid_missing(void)
+/**
+ * Do cache invalidation after a job completes.
+ */
+void dir_cache_invalid_after_job(void)
+{
+    g_cInvalidates++;
+    if (g_fFsCacheIsUsingCustomRevision)
+        kFsCacheInvalidateCustomBoth(g_pFsCache);
+    else
+        kFsCacheInvalidateAll(g_pFsCache);
+}
+
+/**
+ * Invalidate the whole directory cache
+ *
+ * Used by $(dircache-ctl invalidate)
+ */
+void dir_cache_invalid_all(void)
 {
     g_cInvalidates++;
@@ -517 +533 @@
 }
 
+/**
+ * Invalidate missing bits of the directory cache.
+ *
+ * Used by $(dircache-ctl invalidate-missing)
+ */
+void dir_cache_invalid_missing(void)
+{
+    g_cInvalidates++;
+    kFsCacheInvalidateAll(g_pFsCache);
+}
+
+/**
+ * Invalidate the volatile bits of the directory cache.
+ *
+ * Used by $(dircache-ctl invalidate-missing)
+ */
+void dir_cache_invalid_volatile(void)
+{
+    g_cInvalidates++;
+    if (g_fFsCacheIsUsingCustomRevision)
+        kFsCacheInvalidateCustomBoth(g_pFsCache);
+    else
+        kFsCacheInvalidateAll(g_pFsCache);
+}
+
+/**
+ * Used by $(dircache-ctl ) to mark a directory subtree or file as volatile.
+ *
+ * The first call changes the rest of the cache to be considered non-volatile.
+ *
+ * @returns 0 on success, -1 on failure.
+ * @param   pszDir      The directory (or file for what that is worth).
+ */
+int dir_cache_volatile_dir(const char *pszDir)
+{
+    KFSLOOKUPERROR enmError;
+    PKFSOBJ pObj = kFsCacheLookupA(g_pFsCache, pszDir, &enmError);
+    if (pObj)
+    {
+        KBOOL fRc = kFsCacheSetupCustomRevisionForTree(g_pFsCache, pObj);
+        kFsCacheObjRelease(g_pFsCache, pObj);
+        if (fRc)
+        {
+            g_fFsCacheIsUsingCustomRevision = K_TRUE;
+            return 0;
+        }
+        error(reading_file, "failed to mark '%s' as volatile", pszDir);
+    }
+    else
+        error(reading_file, "failed to mark '%s' as volatile (not found)", pszDir);
+    return -1;
+}
+