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authorVijay Bellur <vijay@gluster.com>2009-08-15 12:58:08 +0000
committerAnand V. Avati <avati@dev.gluster.com>2009-08-19 17:57:53 -0700
commitb4d6c3d1bb461d2c8a396c9ed3881a4da40fc6ab (patch)
tree7a5a15665d46a91b9d4d744b0da599c4628d7f6c /libglusterfs/src/statedump.c
parenta31b0016347b3bc9b341fa0f4541ed137224f593 (diff)
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
Diffstat (limited to 'libglusterfs/src/statedump.c')
-rw-r--r--libglusterfs/src/statedump.c213
1 files changed, 213 insertions, 0 deletions
diff --git a/libglusterfs/src/statedump.c b/libglusterfs/src/statedump.c
new file mode 100644
index 000000000..6839c28f6
--- /dev/null
+++ b/libglusterfs/src/statedump.c
@@ -0,0 +1,213 @@
+/*
+ Copyright (c) 2009 Z RESEARCH, Inc. <http://www.zresearch.com>
+ This file is part of GlusterFS.
+
+ GlusterFS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3 of the License,
+ or (at your option) any later version.
+
+ GlusterFS is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see
+ <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdarg.h>
+#include <malloc.h>
+#include "glusterfs.h"
+#include "logging.h"
+#include "iobuf.h"
+#include "statedump.h"
+#include "stack.h"
+
+
+static pthread_mutex_t gf_proc_dump_mutex;
+static int gf_dump_fd = -1;
+
+static void
+gf_proc_dump_lock (void)
+{
+ pthread_mutex_lock(&gf_proc_dump_mutex);
+}
+
+static void
+gf_proc_dump_unlock (void)
+{
+ pthread_mutex_unlock(&gf_proc_dump_mutex);
+}
+
+static int
+gf_proc_dump_open (void)
+{
+ char path[256];
+ int dump_fd = -1;
+
+ memset(path, 0, sizeof(path));
+ snprintf(path, sizeof(path), "%s.%d",GF_DUMP_LOGFILE_ROOT, getpid());
+
+ dump_fd = open(path, O_CREAT|O_RDWR|O_TRUNC|O_APPEND, 0600);
+ if (dump_fd < 0) {
+ gf_log("", GF_LOG_ERROR, "Unable to open file: %s"
+ " errno: %d", path, errno);
+ return -1;
+ }
+
+ gf_dump_fd = dump_fd;
+ return 0;
+}
+
+static void
+gf_proc_dump_close (void)
+{
+ close(gf_dump_fd);
+ gf_dump_fd = -1;
+}
+
+void
+gf_proc_dump_add_section (char *key, ...)
+{
+
+ char buf[GF_DUMP_MAX_BUF_LEN];
+ va_list ap;
+ int ret;
+
+ assert(key);
+
+ memset(buf, 0, sizeof(buf));
+ snprintf(buf, GF_DUMP_MAX_BUF_LEN, "\n[");
+ va_start(ap, key);
+ vsnprintf(buf + strlen(buf),
+ GF_DUMP_MAX_BUF_LEN - strlen(buf), key, ap);
+ va_end(ap);
+ snprintf(buf + strlen(buf),
+ GF_DUMP_MAX_BUF_LEN - strlen(buf), "]\n");
+ ret = write(gf_dump_fd, buf, strlen(buf));
+}
+
+void
+gf_proc_dump_write (char *key, char *value,...)
+{
+
+ char buf[GF_DUMP_MAX_BUF_LEN];
+ int offset = 0;
+ va_list ap;
+ int ret;
+
+ offset = strlen(key);
+
+ memset(buf, 0, GF_DUMP_MAX_BUF_LEN);
+ snprintf(buf, GF_DUMP_MAX_BUF_LEN, "%s",key);
+ snprintf(buf + offset, GF_DUMP_MAX_BUF_LEN - offset, "=");
+ offset += 1;
+ va_start(ap, value);
+ vsnprintf(buf + offset, GF_DUMP_MAX_BUF_LEN - offset, value, ap);
+ va_end(ap);
+
+ offset = strlen(buf);
+ snprintf(buf + offset, GF_DUMP_MAX_BUF_LEN - offset, "\n");
+ ret = write(gf_dump_fd, buf, strlen(buf));
+}
+
+
+/* Currently this dumps only mallinfo. More can be built on here */
+void
+gf_proc_dump_mem_info ()
+{
+#ifdef HAVE_MALLOC_STATS
+ struct mallinfo info;
+
+ memset(&info, 0, sizeof(struct mallinfo));
+ info = mallinfo();
+
+ gf_proc_dump_add_section("mallinfo");
+ gf_proc_dump_write("mallinfo_arena", "%d", info.arena);
+ gf_proc_dump_write("mallinfo_ordblks", "%d", info.ordblks);
+ gf_proc_dump_write("mallinfo_smblks","%d", info.smblks);
+ gf_proc_dump_write("mallinfo_hblks","%d", info.hblks);
+ gf_proc_dump_write("mallinfo_hblkhd", "%d", info.hblkhd);
+ gf_proc_dump_write("mallinfo_usmblks","%d", info.usmblks);
+ gf_proc_dump_write("mallinfo_fsmblks","%d", info.fsmblks);
+ gf_proc_dump_write("mallinfo_uordblks","%d", info.uordblks);
+ gf_proc_dump_write("mallinfo_fordblks", "%d", info.fordblks);
+ gf_proc_dump_write("mallinfo_keepcost", "%d", info.keepcost);
+#endif
+
+}
+
+
+void
+gf_proc_dump_xlator_info (xlator_t *this_xl)
+{
+
+ if (!this_xl)
+ return;
+
+ while (this_xl) {
+ if (!this_xl->dumpops) {
+ this_xl = this_xl->next;
+ continue;
+ }
+ if (this_xl->dumpops->priv)
+ this_xl->dumpops->priv(this_xl);
+ if (this_xl->dumpops->inode)
+ this_xl->dumpops->inode(this_xl);
+ if (this_xl->dumpops->fd)
+ this_xl->dumpops->fd(this_xl);
+ this_xl = this_xl->next;
+ }
+
+ return;
+}
+
+
+void
+gf_proc_dump_info (int signum)
+{
+ int ret = -1;
+ glusterfs_ctx_t *ctx = NULL;
+
+ gf_proc_dump_lock();
+ ret = gf_proc_dump_open();
+ if (ret < 0)
+ goto out;
+ gf_proc_dump_mem_info();
+ ctx = get_global_ctx_ptr();
+ if (ctx) {
+ iobuf_stats_dump(ctx->iobuf_pool);
+ gf_proc_dump_pending_frames(ctx->pool);
+ gf_proc_dump_xlator_info(ctx->graph);
+ }
+
+ gf_proc_dump_close();
+out:
+ gf_proc_dump_unlock();
+
+ return;
+}
+
+void
+gf_proc_dump_fini (void)
+{
+ pthread_mutex_destroy(&gf_proc_dump_mutex);
+}
+
+
+void
+gf_proc_dump_init ()
+{
+ pthread_mutex_init(&gf_proc_dump_mutex, NULL);
+
+ return;
+}
+
+void
+gf_proc_dump_cleanup (void)
+{
+ pthread_mutex_destroy(&gf_proc_dump_mutex);
+}
+