project-base/server-skynet-source-3rd-jemalloc
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Dump heap profile backtraces in a stable order.

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Also iterate over per thread stats in a stable order, which prepares the
way for stable ordering of per thread heap profile dumps.
This commit is contained in:
Jason Evans
2014-08-16 12:58:55 -07:00
parent ab532e9799
commit 3a81cbd2d4
2 changed files with 119 additions and 62 deletions
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24
include/jemalloc/internal/prof.h
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@@ -1,6 +1,7 @@
/******************************************************************************/
#ifdef JEMALLOC_H_TYPES
typedef uint64_t prof_thr_uid_t;
typedef struct prof_bt_s prof_bt_t;
typedef struct prof_cnt_s prof_cnt_t;
typedef struct prof_thr_cnt_s prof_thr_cnt_t;
@@ -81,15 +82,17 @@ struct prof_cnt_s {
};
struct prof_thr_cnt_s {
/* Linkage into prof_ctx_t's cnts_ql. */
ql_elm(prof_thr_cnt_t) cnts_link;
prof_thr_uid_t thr_uid;
/* Linkage into prof_ctx_t's thr_cnts. */
rb_node(prof_thr_cnt_t) thr_cnt_link;
/*
* Associated context. If a thread frees an object that it did not
* allocate, it is possible that the context is not cached in the
* allocate, it is possible that the context is not present in the
* thread's hash table, in which case it must be able to look up the
* context, insert a new prof_thr_cnt_t into the thread's hash table,
* and link it into the prof_ctx_t's cnts_ql.
* and link it into the prof_ctx_t's thr_cnts.
*/
prof_ctx_t *ctx;
@@ -113,9 +116,10 @@ struct prof_thr_cnt_s {
/* Profiling counters. */
prof_cnt_t cnts;
};
typedef rb_tree(prof_thr_cnt_t) prof_thr_cnt_tree_t;
struct prof_ctx_s {
/* Protects nlimbo, cnt_merged, and cnts_ql. */
/* Protects nlimbo, cnt_merged, and thr_cnts. */
malloc_mutex_t *lock;
/*
@@ -136,13 +140,13 @@ struct prof_ctx_s {
prof_cnt_t cnt_merged;
/*
* List of profile counters, one for each thread that has allocated in
* Tree of profile counters, one for each thread that has allocated in
* this context.
*/
ql_head(prof_thr_cnt_t) cnts_ql;
prof_thr_cnt_tree_t thr_cnts;
/* Linkage for list of contexts to be dumped. */
ql_elm(prof_ctx_t) dump_link;
/* Linkage for tree of contexts to be dumped. */
rb_node(prof_ctx_t) dump_link;
/* Associated backtrace. */
prof_bt_t bt;
@@ -150,7 +154,7 @@ struct prof_ctx_s {
/* Backtrace vector, variable size, referred to by bt. */
void *vec[1];
};
typedef ql_head(prof_ctx_t) prof_ctx_list_t;
typedef rb_tree(prof_ctx_t) prof_ctx_tree_t;
struct prof_tdata_s {
/*