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authorAnand Avati <avati@redhat.com>2012-07-16 15:50:30 -0700
committerAnand Avati <avati@redhat.com>2012-07-17 23:04:39 -0700
commita4e11fd67e3608c828e5bb8abf7a310b4f0a3017 (patch)
tree184938d2faa7521cc4608e0d9fddc0ebc50ef461 /libglusterfs/src/ctx.c
parent06c1d6b2b87e542479e069132ee3cf9efa11384e (diff)
glusterfs_ctx_t: un-globalize the filesystem context
So far there has been a global glusterfs_ctx_t object which represents the running instance of the filesystem (client or server). It contains the various graphs, connection to the management daemon over which new graphs are obtained, calls stacks issued on this filesystem, and a bunch of such things. With the introduction of libgfapi, it is no more true that there will be only one filesystem context in a process. Applications can be written to use libgfapi and obtain serveral instances of different filesystems/volumes in the same process. This involves messy untangling of assumptions inside libglusterfs that there would only be one global glusterfs_ctx_t and offload that assumption to glusterfsd/ and cli/ (where it is true). Change-Id: Ifd7d1259428c26076140a5764a2dc7361694139c BUG: 839950 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.com/3678 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Amar Tumballi <amarts@redhat.com>
Diffstat (limited to 'libglusterfs/src/ctx.c')
-rw-r--r--libglusterfs/src/ctx.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/libglusterfs/src/ctx.c b/libglusterfs/src/ctx.c
new file mode 100644
index 00000000000..22591317d86
--- /dev/null
+++ b/libglusterfs/src/ctx.c
@@ -0,0 +1,47 @@
+/*
+ Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif /* !_CONFIG_H */
+
+#include <pthread.h>
+
+#include "glusterfs.h"
+#include "mem-pool.h"
+
+
+glusterfs_ctx_t *
+glusterfs_ctx_new ()
+{
+ int ret = 0;
+ glusterfs_ctx_t *ctx = NULL;
+
+ /* no GF_CALLOC here, gf_acct_mem_set_enable is not
+ yet decided at this point */
+ ctx = CALLOC (1, sizeof (*ctx));
+ if (!ctx) {
+ ret = -1;
+ goto out;
+ }
+
+ INIT_LIST_HEAD (&ctx->graphs);
+ INIT_LIST_HEAD (&ctx->mempool_list);
+
+ ret = pthread_mutex_init (&ctx->lock, NULL);
+ if (ret) {
+ FREE (ctx);
+ ctx = NULL;
+ }
+out:
+ return ctx;
+}
+