TAKE2[PATCH BUG:213 1/1] Support for Process State Dump

Support for process state dump.

Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 213 (Support for process state dump)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=213

1 files changed, 104 insertions, 0 deletions

diff --git a/libglusterfs/src/iobuf.c b/libglusterfs/src/iobuf.c
index 6d6fca13388..e9408f86bac 100644
--- a/libglusterfs/src/iobuf.c
+++ b/libglusterfs/src/iobuf.c
@@ -19,6 +19,7 @@
 
 
 #include "iobuf.h"
+#include "statedump.h"
 #include <stdio.h>
 
 
@@ -636,3 +637,106 @@ iobref_size (struct iobref *iobref)
 out:
         return size;
 }
+
+void 
+iobuf_info_dump (struct iobuf *iobuf, const char *key_prefix)
+{
+        char   key[GF_DUMP_MAX_BUF_LEN];
+        struct iobuf my_iobuf;
+        int    ret = 0;
+
+        if (!iobuf) 
+                return;
+
+        memset(&my_iobuf, 0, sizeof(my_iobuf));
+        
+        ret = TRY_LOCK(&iobuf->lock);
+        if (ret) {
+                gf_log("", GF_LOG_WARNING, "Unable to dump iobuf"
+                " errno: %d", errno);
+                return;
+        }
+        memcpy(&my_iobuf, iobuf, sizeof(my_iobuf));
+        UNLOCK(&iobuf->lock);
+
+	gf_proc_dump_build_key(key, key_prefix,"ref");
+        gf_proc_dump_write(key, "%d", my_iobuf.ref);
+	gf_proc_dump_build_key(key, key_prefix,"ptr");
+        gf_proc_dump_write(key, "%p", my_iobuf.ptr);
+
+}
+
+void 
+iobuf_arena_info_dump (struct iobuf_arena *iobuf_arena, const char *key_prefix)
+{
+	char key[GF_DUMP_MAX_BUF_LEN];
+	int  i = 1;
+        struct iobuf *trav;
+
+	if (!iobuf_arena)
+                return;
+
+        gf_proc_dump_build_key(key, key_prefix,"mem_base");
+        gf_proc_dump_write(key, "%p", iobuf_arena->mem_base);
+	gf_proc_dump_build_key(key, key_prefix, "active_cnt");
+        gf_proc_dump_write(key, "%d", iobuf_arena->active_cnt);
+	gf_proc_dump_build_key(key, key_prefix, "passive_cnt");
+        gf_proc_dump_write(key, "%d", iobuf_arena->passive_cnt);
+	list_for_each_entry (trav, &iobuf_arena->active.list, list) {
+                gf_proc_dump_build_key(key, key_prefix,"active_iobuf.%d", i++);
+                gf_proc_dump_add_section(key);
+                iobuf_info_dump(trav, key);
+        }
+
+        i = 1;
+        list_for_each_entry (trav, &iobuf_arena->passive.list, list) {
+                gf_proc_dump_build_key(key, key_prefix,
+                                        "passive_iobuf.%d",i++);
+                gf_proc_dump_add_section(key);
+                iobuf_info_dump(trav, key);
+        }
+
+}
+
+void
+iobuf_stats_dump (struct iobuf_pool *iobuf_pool)
+{
+    
+        char               msg[1024];
+        struct iobuf_arena *trav;
+        int                i = 1;
+        int                ret = -1;
+
+        if (!iobuf_pool)
+                return;
+
+        memset(msg, 0, sizeof(msg));
+
+        ret = pthread_mutex_trylock(&iobuf_pool->mutex);
+
+        if (ret) {
+                gf_log("", GF_LOG_WARNING, "Unable to dump iobuf pool"
+                " errno: %d", errno);
+                return;
+        }
+        gf_proc_dump_add_section("iobuf.global");
+        gf_proc_dump_write("iobuf.global.iobuf_pool","%p", iobuf_pool);
+        gf_proc_dump_write("iobuf.global.iobuf_pool.page_size", "%d",
+						 iobuf_pool->page_size);
+        gf_proc_dump_write("iobuf.global.iobuf_pool.arena_size", "%d",
+						 iobuf_pool->arena_size);
+        gf_proc_dump_write("iobuf.global.iobuf_pool.arena_cnt", "%d",
+						 iobuf_pool->arena_cnt);
+
+        list_for_each_entry (trav, &iobuf_pool->arenas.list, list) {
+                snprintf(msg, sizeof(msg), "iobuf.global.iobuf_pool.arena.%d",
+                                                                            i);
+		gf_proc_dump_add_section(msg);
+                iobuf_arena_info_dump(trav,msg);
+                i++;
+        }
+        
+        pthread_mutex_unlock(&iobuf_pool->mutex);
+
+        return;
+}