Function prof_recent_alloc_dump

BeefRT/JEMalloc/src/prof_recent.c:531–579

#define PROF_RECENT_PRINT_BUFSIZE 65536
JEMALLOC_COLD
void
prof_recent_alloc_dump(tsd_t *tsd, write_cb_t *write_cb, void *cbopaque) {
	cassert(config_prof);
	malloc_mutex_lock(tsd_tsdn(tsd), &prof_recent_dump_mtx);
	buf_writer_t buf_writer;
	buf_writer_init(tsd_tsdn(tsd), &buf_writer, write_cb, cbopaque, NULL,
	    PROF_RECENT_PRINT_BUFSIZE);
	emitter_t emitter;
	emitter_init(&emitter, emitter_output_json_compact, buf_writer_cb,
	    &buf_writer);
	prof_recent_list_t temp_list;

	malloc_mutex_lock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
	prof_recent_alloc_assert_count(tsd);
	ssize_t dump_max = prof_recent_alloc_max_get(tsd);
	ql_move(&temp_list, &prof_recent_alloc_list);
	ssize_t dump_count = prof_recent_alloc_count;
	prof_recent_alloc_count = 0;
	prof_recent_alloc_assert_count(tsd);
	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);

	emitter_begin(&emitter);
	uint64_t sample_interval = (uint64_t)1U << lg_prof_sample;
	emitter_json_kv(&emitter, "sample_interval", emitter_type_uint64,
	    &sample_interval);
	emitter_json_kv(&emitter, "recent_alloc_max", emitter_type_ssize,
	    &dump_max);
	emitter_json_array_kv_begin(&emitter, "recent_alloc");
	prof_recent_t *node;
	ql_foreach(node, &temp_list, link) {
		prof_recent_alloc_dump_node(&emitter, node);
	}
	emitter_json_array_end(&emitter);
	emitter_end(&emitter);

	malloc_mutex_lock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);
	prof_recent_alloc_assert_count(tsd);
	ql_concat(&temp_list, &prof_recent_alloc_list, link);
	ql_move(&prof_recent_alloc_list, &temp_list);
	prof_recent_alloc_count += dump_count;
	prof_recent_alloc_restore_locked(tsd, &temp_list);
	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_recent_alloc_mtx);

	buf_writer_terminate(tsd_tsdn(tsd), &buf_writer);
	malloc_mutex_unlock(tsd_tsdn(tsd), &prof_recent_dump_mtx);

	prof_recent_alloc_async_cleanup(tsd, &temp_list);
}
#undef PROF_RECENT_PRINT_BUFSIZE

bool