stan/jdk-24
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

8227559: JFR: Slow dump with path-to-gc-roots=true

Browse Source 
Reviewed-by: mgronlun
This commit is contained in:
Erik Gahlin 2020-05-22 16:55:13 +02:00
parent b2269be8db
commit 50f24ca0cb
2 changed files with 5 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/hotspot/share/jfr/leakprofiler/chains/dfsClosure.cpp
View File

@ -37,8 +37,7 @@
#include "oops/oop.inline.hpp"
#include "utilities/align.hpp"
// max dfs depth should not exceed size of stack
static const size_t max_dfs_depth = 4000;
UnifiedOopRef DFSClosure::_reference_stack[max_dfs_depth];
void DFSClosure::find_leaks_from_edge(EdgeStore* edge_store,
BitSet* mark_bits,
@ -72,11 +71,6 @@ void DFSClosure::find_leaks_from_root_set(EdgeStore* edge_store,
DFSClosure::DFSClosure(EdgeStore* edge_store, BitSet* mark_bits, const Edge* start_edge)
:_edge_store(edge_store), _mark_bits(mark_bits), _start_edge(start_edge),
_max_depth(max_dfs_depth), _depth(0), _ignore_root_set(false) {
_reference_stack = NEW_C_HEAP_ARRAY(UnifiedOopRef, max_dfs_depth, mtTracing);
}
DFSClosure::~DFSClosure() {
FREE_C_HEAP_ARRAY(UnifiedOopRef, _reference_stack);
}
void DFSClosure::closure_impl(UnifiedOopRef reference, const oop pointee) {

6
src/hotspot/share/jfr/leakprofiler/chains/dfsClosure.hpp
View File

@ -36,16 +36,18 @@ class EdgeQueue;
// Class responsible for iterating the heap depth-first
class DFSClosure : public BasicOopIterateClosure {
private:
// max dfs depth should not exceed size of stack
static const size_t max_dfs_depth = 4000;
static UnifiedOopRef _reference_stack[max_dfs_depth];
EdgeStore* _edge_store;
BitSet* _mark_bits;
const Edge*_start_edge;
size_t _max_depth;
size_t _depth;
bool _ignore_root_set;
UnifiedOopRef* _reference_stack;
DFSClosure(EdgeStore* edge_store, BitSet* mark_bits, const Edge* start_edge);
~DFSClosure();
void add_chain();
void closure_impl(UnifiedOopRef reference, const oop pointee);