diff options
Diffstat (limited to 'libglusterfs/src/stack.c')
| -rw-r--r-- | libglusterfs/src/stack.c | 452 |
1 files changed, 452 insertions, 0 deletions
diff --git a/libglusterfs/src/stack.c b/libglusterfs/src/stack.c new file mode 100644 index 00000000000..1531f0da43f --- /dev/null +++ b/libglusterfs/src/stack.c @@ -0,0 +1,452 @@ +/* + 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. +*/ + +#include "glusterfs/statedump.h" +#include "glusterfs/stack.h" +#include "glusterfs/libglusterfs-messages.h" + +call_frame_t * +create_frame(xlator_t *xl, call_pool_t *pool) +{ + call_stack_t *stack = NULL; + call_frame_t *frame = NULL; + static uint64_t unique = 0; + + if (!xl || !pool) { + return NULL; + } + + stack = mem_get0(pool->stack_mem_pool); + if (!stack) + return NULL; + + INIT_LIST_HEAD(&stack->myframes); + + frame = mem_get0(pool->frame_mem_pool); + if (!frame) { + mem_put(stack); + return NULL; + } + + frame->root = stack; + frame->this = xl; + LOCK_INIT(&frame->lock); + INIT_LIST_HEAD(&frame->frames); + list_add(&frame->frames, &stack->myframes); + + stack->pool = pool; + stack->ctx = xl->ctx; + + if (frame->root->ctx->measure_latency) { + timespec_now(&stack->tv); + memcpy(&frame->begin, &stack->tv, sizeof(stack->tv)); + } + + LOCK(&pool->lock); + { + list_add(&stack->all_frames, &pool->all_frames); + pool->cnt++; + stack->unique = unique++; + } + UNLOCK(&pool->lock); + GF_ATOMIC_INC(pool->total_count); + + LOCK_INIT(&stack->stack_lock); + + return frame; +} + +void +call_stack_set_groups(call_stack_t *stack, int ngrps, gid_t **groupbuf_p) +{ + /* We take the ownership of the passed group buffer. */ + + if (ngrps <= SMALL_GROUP_COUNT) { + memcpy(stack->groups_small, *groupbuf_p, sizeof(gid_t) * ngrps); + stack->groups = stack->groups_small; + GF_FREE(*groupbuf_p); + } else { + stack->groups_large = *groupbuf_p; + stack->groups = stack->groups_large; + } + + stack->ngrps = ngrps; + /* Set a canary. */ + *groupbuf_p = (void *)0xdeadf00d; +} + +void +gf_proc_dump_call_frame(call_frame_t *call_frame, const char *key_buf, ...) +{ + char prefix[GF_DUMP_MAX_BUF_LEN]; + va_list ap; + call_frame_t my_frame = { + 0, + }; + + int ret = -1; + char timestr[GF_TIMESTR_SIZE] = { + 0, + }; + int len; + + if (!call_frame) + return; + + GF_ASSERT(key_buf); + + va_start(ap, key_buf); + vsnprintf(prefix, GF_DUMP_MAX_BUF_LEN, key_buf, ap); + va_end(ap); + + ret = TRY_LOCK(&call_frame->lock); + if (ret) + goto out; + + memcpy(&my_frame, call_frame, sizeof(my_frame)); + UNLOCK(&call_frame->lock); + + if (my_frame.root->ctx->measure_latency) { + gf_time_fmt(timestr, sizeof(timestr), my_frame.begin.tv_sec, + gf_timefmt_FT); + len = strlen(timestr); + snprintf(timestr + len, sizeof(timestr) - len, ".%" GF_PRI_SNSECONDS, + my_frame.begin.tv_nsec); + gf_proc_dump_write("frame-creation-time", "%s", timestr); + gf_proc_dump_write( + "timings", "%ld.%" GF_PRI_SNSECONDS " -> %ld.%" GF_PRI_SNSECONDS, + my_frame.begin.tv_sec, my_frame.begin.tv_nsec, my_frame.end.tv_sec, + my_frame.end.tv_nsec); + } + + gf_proc_dump_write("frame", "%p", call_frame); + gf_proc_dump_write("ref_count", "%d", my_frame.ref_count); + gf_proc_dump_write("translator", "%s", my_frame.this->name); + gf_proc_dump_write("complete", "%d", my_frame.complete); + + if (my_frame.parent) + gf_proc_dump_write("parent", "%s", my_frame.parent->this->name); + + if (my_frame.wind_from) + gf_proc_dump_write("wind_from", "%s", my_frame.wind_from); + + if (my_frame.wind_to) + gf_proc_dump_write("wind_to", "%s", my_frame.wind_to); + + if (my_frame.unwind_from) + gf_proc_dump_write("unwind_from", "%s", my_frame.unwind_from); + + if (my_frame.unwind_to) + gf_proc_dump_write("unwind_to", "%s", my_frame.unwind_to); + + ret = 0; +out: + if (ret) { + gf_proc_dump_write("Unable to dump the frame information", + "(Lock acquisition failed)"); + return; + } +} + +void +gf_proc_dump_call_stack(call_stack_t *call_stack, const char *key_buf, ...) +{ + char prefix[GF_DUMP_MAX_BUF_LEN]; + va_list ap; + call_frame_t *trav; + int32_t i = 1, cnt = 0; + char timestr[GF_TIMESTR_SIZE] = { + 0, + }; + int len; + + if (!call_stack) + return; + + GF_ASSERT(key_buf); + + va_start(ap, key_buf); + vsnprintf(prefix, GF_DUMP_MAX_BUF_LEN, key_buf, ap); + va_end(ap); + + cnt = call_frames_count(call_stack); + gf_time_fmt(timestr, sizeof(timestr), call_stack->tv.tv_sec, gf_timefmt_FT); + len = strlen(timestr); + snprintf(timestr + len, sizeof(timestr) - len, ".%" GF_PRI_SNSECONDS, + call_stack->tv.tv_nsec); + gf_proc_dump_write("callstack-creation-time", "%s", timestr); + + gf_proc_dump_write("stack", "%p", call_stack); + gf_proc_dump_write("uid", "%d", call_stack->uid); + gf_proc_dump_write("gid", "%d", call_stack->gid); + gf_proc_dump_write("pid", "%d", call_stack->pid); + gf_proc_dump_write("unique", "%" PRIu64, call_stack->unique); + gf_proc_dump_write("lk-owner", "%s", lkowner_utoa(&call_stack->lk_owner)); + gf_proc_dump_write("ctime", "%" GF_PRI_SECOND ".%" GF_PRI_SNSECONDS, + call_stack->tv.tv_sec, call_stack->tv.tv_nsec); + + if (call_stack->type == GF_OP_TYPE_FOP) + gf_proc_dump_write("op", "%s", (char *)gf_fop_list[call_stack->op]); + else + gf_proc_dump_write("op", "stack"); + + gf_proc_dump_write("type", "%d", call_stack->type); + gf_proc_dump_write("cnt", "%d", cnt); + + list_for_each_entry(trav, &call_stack->myframes, frames) + { + gf_proc_dump_add_section("%s.frame.%d", prefix, i); + gf_proc_dump_call_frame(trav, "%s.frame.%d", prefix, i); + i++; + } +} + +void +gf_proc_dump_pending_frames(call_pool_t *call_pool) +{ + call_stack_t *trav = NULL; + int i = 1; + int ret = -1; + gf_boolean_t section_added = _gf_false; + + if (!call_pool) + return; + + ret = TRY_LOCK(&(call_pool->lock)); + if (ret) + goto out; + + gf_proc_dump_add_section("global.callpool"); + section_added = _gf_true; + gf_proc_dump_write("callpool_address", "%p", call_pool); + gf_proc_dump_write("callpool.cnt", "%" PRId64, call_pool->cnt); + + list_for_each_entry(trav, &call_pool->all_frames, all_frames) + { + gf_proc_dump_add_section("global.callpool.stack.%d", i); + gf_proc_dump_call_stack(trav, "global.callpool.stack.%d", i); + i++; + } + UNLOCK(&(call_pool->lock)); + + ret = 0; +out: + if (ret) { + if (_gf_false == section_added) + gf_proc_dump_add_section("global.callpool"); + gf_proc_dump_write("Unable to dump the callpool", + "(Lock acquisition failed) %p", call_pool); + } + return; +} + +void +gf_proc_dump_call_frame_to_dict(call_frame_t *call_frame, char *prefix, + dict_t *dict) +{ + int ret = -1; + char key[GF_DUMP_MAX_BUF_LEN] = { + 0, + }; + char msg[GF_DUMP_MAX_BUF_LEN] = { + 0, + }; + call_frame_t tmp_frame = { + 0, + }; + + if (!call_frame || !dict) + return; + + ret = TRY_LOCK(&call_frame->lock); + if (ret) + return; + memcpy(&tmp_frame, call_frame, sizeof(tmp_frame)); + UNLOCK(&call_frame->lock); + + snprintf(key, sizeof(key), "%s.refcount", prefix); + ret = dict_set_int32(dict, key, tmp_frame.ref_count); + if (ret) + return; + + snprintf(key, sizeof(key), "%s.translator", prefix); + ret = dict_set_dynstr(dict, key, gf_strdup(tmp_frame.this->name)); + if (ret) + return; + + snprintf(key, sizeof(key), "%s.complete", prefix); + ret = dict_set_int32(dict, key, tmp_frame.complete); + if (ret) + return; + + if (tmp_frame.root->ctx->measure_latency) { + snprintf(key, sizeof(key), "%s.timings", prefix); + snprintf(msg, sizeof(msg), + "%ld.%" GF_PRI_SNSECONDS " -> %ld.%" GF_PRI_SNSECONDS, + tmp_frame.begin.tv_sec, tmp_frame.begin.tv_nsec, + tmp_frame.end.tv_sec, tmp_frame.end.tv_nsec); + ret = dict_set_str(dict, key, msg); + if (ret) + return; + } + + if (tmp_frame.parent) { + snprintf(key, sizeof(key), "%s.parent", prefix); + ret = dict_set_dynstr(dict, key, + gf_strdup(tmp_frame.parent->this->name)); + if (ret) + return; + } + + if (tmp_frame.wind_from) { + snprintf(key, sizeof(key), "%s.windfrom", prefix); + ret = dict_set_dynstr(dict, key, gf_strdup(tmp_frame.wind_from)); + if (ret) + return; + } + + if (tmp_frame.wind_to) { + snprintf(key, sizeof(key), "%s.windto", prefix); + ret = dict_set_dynstr(dict, key, gf_strdup(tmp_frame.wind_to)); + if (ret) + return; + } + + if (tmp_frame.unwind_from) { + snprintf(key, sizeof(key), "%s.unwindfrom", prefix); + ret = dict_set_dynstr(dict, key, gf_strdup(tmp_frame.unwind_from)); + if (ret) + return; + } + + if (tmp_frame.unwind_to) { + snprintf(key, sizeof(key), "%s.unwind_to", prefix); + ret = dict_set_dynstr(dict, key, gf_strdup(tmp_frame.unwind_to)); + if (ret) + return; + } + + return; +} + +void +gf_proc_dump_call_stack_to_dict(call_stack_t *call_stack, char *prefix, + dict_t *dict) +{ + int ret = -1; + char key[GF_DUMP_MAX_BUF_LEN] = { + 0, + }; + call_frame_t *trav = NULL; + int i = 0; + int count = 0; + + if (!call_stack || !dict) + return; + + count = call_frames_count(call_stack); + snprintf(key, sizeof(key), "%s.uid", prefix); + ret = dict_set_int32(dict, key, call_stack->uid); + if (ret) + return; + + snprintf(key, sizeof(key), "%s.gid", prefix); + ret = dict_set_int32(dict, key, call_stack->gid); + if (ret) + return; + + snprintf(key, sizeof(key), "%s.pid", prefix); + ret = dict_set_int32(dict, key, call_stack->pid); + if (ret) + return; + + snprintf(key, sizeof(key), "%s.unique", prefix); + ret = dict_set_uint64(dict, key, call_stack->unique); + if (ret) + return; + + snprintf(key, sizeof(key), "%s.op", prefix); + if (call_stack->type == GF_OP_TYPE_FOP) + ret = dict_set_str(dict, key, (char *)gf_fop_list[call_stack->op]); + else + ret = dict_set_str(dict, key, "other"); + + if (ret) + return; + + snprintf(key, sizeof(key), "%s.type", prefix); + ret = dict_set_int32(dict, key, call_stack->type); + if (ret) + return; + + snprintf(key, sizeof(key), "%s.count", prefix); + ret = dict_set_int32(dict, key, count); + if (ret) + return; + + list_for_each_entry(trav, &call_stack->myframes, frames) + { + snprintf(key, sizeof(key), "%s.frame%d", prefix, i); + gf_proc_dump_call_frame_to_dict(trav, key, dict); + i++; + } + + return; +} + +void +gf_proc_dump_pending_frames_to_dict(call_pool_t *call_pool, dict_t *dict) +{ + int ret = -1; + call_stack_t *trav = NULL; + char key[GF_DUMP_MAX_BUF_LEN] = { + 0, + }; + int i = 0; + + if (!call_pool || !dict) + return; + + ret = TRY_LOCK(&call_pool->lock); + if (ret) { + gf_msg(THIS->name, GF_LOG_WARNING, errno, LG_MSG_LOCK_FAILURE, + "Unable to dump call " + "pool to dict."); + return; + } + + ret = dict_set_int32(dict, "callpool.count", call_pool->cnt); + if (ret) + goto out; + + list_for_each_entry(trav, &call_pool->all_frames, all_frames) + { + snprintf(key, sizeof(key), "callpool.stack%d", i); + gf_proc_dump_call_stack_to_dict(trav, key, dict); + i++; + } + +out: + UNLOCK(&call_pool->lock); + + return; +} + +gf_boolean_t +__is_fuse_call(call_frame_t *frame) +{ + gf_boolean_t is_fuse_call = _gf_false; + GF_ASSERT(frame); + GF_ASSERT(frame->root); + + if (NFS_PID != frame->root->pid) + is_fuse_call = _gf_true; + return is_fuse_call; +} |