Add an option to disable aggregating reads in the proxy

[bluesky.git] / bluesky / bluesky.h

diff --git a/bluesky/bluesky.h b/bluesky/bluesky.h
index a4dfbbe..69f215a 100644 (file)
--- a/bluesky/bluesky.h
+++ b/bluesky/bluesky.h
@@ -10,6 +10,7 @@
 #define _BLUESKY_H
 
 #include <stdint.h>
+#include <stdio.h>
 #include <inttypes.h>
 #include <glib.h>
 
@@ -19,10 +20,10 @@ extern "C" {
 
 /* Various options to tweak for performance benchmarking purposes. */
 typedef struct {
-    /* Perform all get/put operations synchronously. */
+    /* OBSOLETE: Perform all get/put operations synchronously. */
     int synchronous_stores;
 
-    /* Write data in cache immediately after file is modified. */
+    /* OBSOLETE: Write data in cache immediately after file is modified. */
     int writethrough_cache;
 
     /* Can inodes be fetched asynchronously?  (Inode object is initially
@@ -36,6 +37,20 @@ typedef struct {
 
     /* Target size of the disk cache at the proxy, in kilobytes. */
     int cache_size;
+
+    /* Full segment fetches (1) or use range requests (0) for fetching segments
+     * from cloud? */
+    int full_segment_fetches;
+
+    /* Disable aggregating of data into log segments.  Each object will be
+     * stored in a separate segment. */
+    int disable_aggregation;
+
+    /* Disable cryptography.  This is for benchmarking purposes. */
+    int disable_crypto;
+
+    /* Disable aggregation of read requests.  Fetch items individually. */
+    int disable_read_aggregation;
 } BlueSkyOptions;
 
 extern BlueSkyOptions bluesky_options;
@@ -53,6 +68,7 @@ struct bluesky_stats {
 struct bluesky_stats *bluesky_stats_new(const char *name);
 void bluesky_stats_add(struct bluesky_stats *stats, int64_t value);
 void bluesky_stats_dump_all();
+void bluesky_stats_run_periodic_dump(FILE *f);
 
 /* BlueSky status and error codes.  Various frontends should translate these to
  * the appropriate error code for whatever protocol they implement. */
@@ -66,8 +82,8 @@ void bluesky_init(void);
 
 gchar *bluesky_lowercase(const gchar *s);
 
-struct _BlueSkyCacheFile;
-typedef struct _BlueSkyCacheFile BlueSkyCacheFile;
+struct BlueSkyCacheFile;
+typedef struct BlueSkyCacheFile BlueSkyCacheFile;
 
 typedef struct {
     gint refcount;
@@ -85,19 +101,37 @@ void bluesky_string_unref(BlueSkyRCStr *string);
 BlueSkyRCStr *bluesky_string_dup(BlueSkyRCStr *string);
 void bluesky_string_resize(BlueSkyRCStr *string, gsize len);
 
+struct BlueSkyRangeset;
+typedef struct BlueSkyRangeset BlueSkyRangeset;
+typedef struct {
+    uint64_t start, length;
+    gpointer data;
+} BlueSkyRangesetItem;
+
+BlueSkyRangeset *bluesky_rangeset_new();
+void bluesky_rangeset_free(BlueSkyRangeset *rangeset);
+gboolean bluesky_rangeset_insert(BlueSkyRangeset *rangeset,
+                                 uint64_t start, uint64_t length,
+                                 gpointer data);
+const BlueSkyRangesetItem *bluesky_rangeset_lookup(BlueSkyRangeset *rangeset,
+                                                   uint64_t offset);
+const BlueSkyRangesetItem *bluesky_rangeset_lookup_next(BlueSkyRangeset *rangeset, uint64_t offset);
+void bluesky_rangeset_get_extents(BlueSkyRangeset *rangeset,
+                                  uint64_t *start, uint64_t *length);
+
 /* Storage interface.  This presents a key-value store abstraction, and can
  * have multiple implementations: in-memory, on-disk, in-cloud. */
-struct _BlueSkyStore;
-typedef struct _BlueSkyStore BlueSkyStore;
+struct BlueSkyStore;
+typedef struct BlueSkyStore BlueSkyStore;
 
-struct _BlueSkyLog;
-typedef struct _BlueSkyLog BlueSkyLog;
+struct BlueSkyLog;
+typedef struct BlueSkyLog BlueSkyLog;
 
-struct _BlueSkyCloudLogState;
-typedef struct _BlueSkyCloudLogState BlueSkyCloudLogState;
+struct BlueSkyCloudLogState;
+typedef struct BlueSkyCloudLogState BlueSkyCloudLogState;
 
-struct _BlueSkyCloudLog;
-typedef struct _BlueSkyCloudLog BlueSkyCloudLog;
+struct BlueSkyCloudLog;
+typedef struct BlueSkyCloudLog BlueSkyCloudLog;
 
 void bluesky_store_init();
 BlueSkyStore *bluesky_store_new(const gchar *type);
@@ -271,6 +305,9 @@ typedef struct {
 
     /* Symlink-specific fields */
     gchar *symlink_contents;
+
+    /* A field for short-term use internally while the lock is held. */
+    gpointer private_data;
 } BlueSkyInode;
 
 /* A directory entry.  The name is UTF-8 and is a freshly-allocated string.
@@ -334,6 +371,7 @@ void bluesky_file_read(BlueSkyInode *inode, uint64_t offset,
                        char *buf, gint len);
 
 void bluesky_inode_fetch(BlueSkyFS *fs, uint64_t inum);
+void bluesky_inode_prefetch(BlueSkyFS *fs, uint64_t inum);
 
 gint bluesky_dirent_compare(gconstpointer a, gconstpointer b,
                             gpointer unused);
@@ -345,6 +383,22 @@ void bluesky_flushd_thread_launch(BlueSkyFS *fs);
 
 void bluesky_debug_dump(BlueSkyFS *fs);
 
+/* Request response time tracking. */
+typedef struct BlueSkyProfile {
+    int magic;
+    GMutex *lock;
+    char *description;
+    GList *events;
+} BlueSkyProfile;
+
+BlueSkyProfile *bluesky_profile_new();
+void bluesky_profile_free(BlueSkyProfile *profile);
+void bluesky_profile_add_event(BlueSkyProfile *profile, char *message);
+void bluesky_profile_print(BlueSkyProfile *profile);
+BlueSkyProfile *bluesky_profile_get();
+void bluesky_profile_set(BlueSkyProfile *profile);
+void bluesky_profile_set_output(FILE *stream);
+
 #ifdef __cplusplus
 }
 #endif