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Last-N profiling mode

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This commit is contained in:
Yinan Zhang
2019-12-18 13:38:14 -08:00
parent 7a27a05940
commit 9a60cf54ec
26 changed files with 1218 additions and 44 deletions
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16
src/prof.c
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@@ -7,6 +7,7 @@
#include "jemalloc/internal/mutex.h"
#include "jemalloc/internal/prof_data.h"
#include "jemalloc/internal/prof_log.h"
#include "jemalloc/internal/prof_recent.h"
#include "jemalloc/internal/thread_event.h"
/*
@@ -146,7 +147,8 @@ prof_alloc_rollback(tsd_t *tsd, prof_tctx_t *tctx, bool updated) {
void
prof_malloc_sample_object(tsd_t *tsd, const void *ptr, size_t usize,
prof_tctx_t *tctx) {
prof_info_set(tsd, ptr, tctx);
edata_t *edata = iealloc(tsd_tsdn(tsd), ptr);
prof_info_set(tsd, edata, tctx);
malloc_mutex_lock(tsd_tsdn(tsd), tctx->tdata->lock);
tctx->cnts.curobjs++;
@@ -155,8 +157,13 @@ prof_malloc_sample_object(tsd_t *tsd, const void *ptr, size_t usize,
tctx->cnts.accumobjs++;
tctx->cnts.accumbytes += usize;
}
bool record_recent = prof_recent_alloc_prepare(tsd, tctx);
tctx->prepared = false;
malloc_mutex_unlock(tsd_tsdn(tsd), tctx->tdata->lock);
if (record_recent) {
assert(tctx == edata_prof_tctx_get(edata));
prof_recent_alloc(tsd, edata, usize);
}
}
void
@@ -1068,6 +1075,10 @@ prof_boot2(tsd_t *tsd) {
return true;
}
if (prof_recent_init()) {
return true;
}
gctx_locks = (malloc_mutex_t *)base_alloc(tsd_tsdn(tsd),
b0get(), PROF_NCTX_LOCKS * sizeof(malloc_mutex_t),
CACHELINE);
@@ -1134,6 +1145,7 @@ prof_prefork1(tsdn_t *tsdn) {
malloc_mutex_prefork(tsdn, &prof_gdump_mtx);
malloc_mutex_prefork(tsdn, &next_thr_uid_mtx);
malloc_mutex_prefork(tsdn, &prof_thread_active_init_mtx);
malloc_mutex_prefork(tsdn, &prof_recent_alloc_mtx);
}
}
@@ -1142,6 +1154,7 @@ prof_postfork_parent(tsdn_t *tsdn) {
if (config_prof && opt_prof) {
unsigned i;
malloc_mutex_postfork_parent(tsdn, &prof_recent_alloc_mtx);
malloc_mutex_postfork_parent(tsdn,
&prof_thread_active_init_mtx);
malloc_mutex_postfork_parent(tsdn, &next_thr_uid_mtx);
@@ -1166,6 +1179,7 @@ prof_postfork_child(tsdn_t *tsdn) {
if (config_prof && opt_prof) {
unsigned i;
malloc_mutex_postfork_child(tsdn, &prof_recent_alloc_mtx);
malloc_mutex_postfork_child(tsdn, &prof_thread_active_init_mtx);
malloc_mutex_postfork_child(tsdn, &next_thr_uid_mtx);
malloc_mutex_postfork_child(tsdn, &prof_gdump_mtx);