X-Git-Url: http://git.vrable.net/?a=blobdiff_plain;f=bluesky%2Finit.c;h=b1716250226c7a131bc51180bb425449b2514874;hb=8ff0fd08d6e1cc97cdb7e94b7cd97dc28c29e674;hp=69fbe62ddfa926809ea3074ae024daa142936b6f;hpb=d514caf49faff9295d0e497d3b6b8856fe83f8d0;p=bluesky.git

diff --git a/bluesky/init.c b/bluesky/init.c
index 69fbe62..b171625 100644
--- a/bluesky/init.c
+++ b/bluesky/init.c
@@ -3,7 +3,29 @@
  * Copyright (C) 2009  The Regents of the University of California
  * Written by Michael Vrable <mvrable@cs.ucsd.edu>
  *
- * TODO: Licensing
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
  */
 
 #include <stdint.h>
@@ -13,11 +35,61 @@
 
 #include "bluesky-private.h"
 
-BlueSkyOptions bluesky_options;
+int bluesky_verbose = 0;
+
+BlueSkyOptions bluesky_options = {
+    .cache_size = 1024*1024,         // Default cache size is 1 GiB
+};
+
+/* Maximum number of threads to use in any particular thread pool, or -1 for no
+ * limit */
+int bluesky_max_threads = 16;
+
+/* Watermark levels for cache tuning: these control when dirty data is flushed
+ * from cache, when clean data is dropped from the cache, etc.  These values
+ * are measured in blocks, not bytes.
+ *
+ * There are a few relevant levels:
+ *   low: Below this point, data is not forced out due to memory pressure
+ *   medium: At this point start flushing data to get back below medium
+ *   high: Flush data very aggressively (launch extra tasks if needed)
+ */
+int bluesky_watermark_low_dirty    = (64 << 20) / BLUESKY_BLOCK_SIZE;
+int bluesky_watermark_medium_dirty = (96 << 20) / BLUESKY_BLOCK_SIZE;
+int bluesky_watermark_med2_dirty   = (160 << 20) / BLUESKY_BLOCK_SIZE;
+int bluesky_watermark_high_dirty   = (192 << 20) / BLUESKY_BLOCK_SIZE;
+
+int bluesky_watermark_low_total    = (64 << 20) / BLUESKY_BLOCK_SIZE;
+int bluesky_watermark_medium_total = (128 << 20) / BLUESKY_BLOCK_SIZE;
+int bluesky_watermark_med2_total   = (224 << 20) / BLUESKY_BLOCK_SIZE;
+int bluesky_watermark_high_total   = (256 << 20) / BLUESKY_BLOCK_SIZE;
+
+/* Environment variables that can be used to initialize settings. */
+static struct {
+    const char *env;
+    int *option;
+} option_table[] = {
+    {"BLUESKY_VERBOSE", &bluesky_verbose},
+    {"BLUESKY_OPT_SYNC_STORES", &bluesky_options.synchronous_stores},
+    {"BLUESKY_OPT_WRITETHROUGH", &bluesky_options.writethrough_cache},
+    {"BLUESKY_OPT_SYNC_INODE_FETCH", &bluesky_options.sync_inode_fetches},
+    {"BLUESKY_OPT_SYNC_FRONTENDS", &bluesky_options.sync_frontends},
+    {"BLUESKY_CACHE_SIZE", &bluesky_options.cache_size},
+    {"BLUESKY_OPT_FULL_SEGMENTS", &bluesky_options.full_segment_fetches},
+    {"BLUESKY_OPT_NO_AGGREGATION", &bluesky_options.disable_aggregation},
+    {"BLUESKY_OPT_NO_CRYPTO", &bluesky_options.disable_crypto},
+    {"BLUESKY_OPT_NO_GROUP_READS", &bluesky_options.disable_read_aggregation},
+    {NULL, NULL}
+};
 
 /* BlueSky library initialization. */
 
 void bluesky_store_init_s3(void);
+void bluesky_store_init_azure(void);
+void bluesky_store_init_kv(void);
+void bluesky_store_init_multi(void);
+void bluesky_store_init_bdb(void);
+void bluesky_store_init_simple(void);
 
 /* Initialize the BlueSky library and dependent libraries. */
 void bluesky_init(void)
@@ -25,10 +97,20 @@ void bluesky_init(void)
     g_thread_init(NULL);
     bluesky_crypt_init();
 
-    bluesky_options.synchronous_stores = 0;
-    bluesky_options.writethrough_cache = 0;
-    bluesky_options.async_inode_fetches = 0;
+    for (int i = 0; option_table[i].env != NULL; i++) {
+        const char *val = getenv(option_table[i].env);
+        if (val != NULL) {
+            int v = atoi(val);
+            g_print("Option %s set to %d\n", option_table[i].env, v);
+            *option_table[i].option = atoi(val);
+        }
+    }
 
     bluesky_store_init();
+    bluesky_store_init_kv();
     bluesky_store_init_s3();
+    bluesky_store_init_azure();
+    bluesky_store_init_multi();
+    bluesky_store_init_bdb();
+    bluesky_store_init_simple();
 }