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# HG changeset patch
# Parent 5c1a815b73abcb755c43eb820f6557d37aeb4f9f
diff -r 5c1a815b73ab src/share/vm/classfile/classFileParser.cpp
--- a/src/share/vm/classfile/classFileParser.cpp Mon Dec 07 17:08:29 2015 -0800
+++ b/src/share/vm/classfile/classFileParser.cpp Mon Dec 07 17:11:00 2015 -0800
@@ -4257,6 +4257,11 @@
}
}
+ if (cfs->source() != NULL && HotswapDeoptClassPath != NULL) {
+ if (strstr(cfs->source(), HotswapDeoptClassPath) != NULL)
+ this_klass->set_deoptimization_incl(true);
+ }
+
if (TraceClassResolution) {
ResourceMark rm;
// print out the superclass.
diff -r 5c1a815b73ab src/share/vm/classfile/systemDictionary.cpp
--- a/src/share/vm/classfile/systemDictionary.cpp Mon Dec 07 17:08:29 2015 -0800
+++ b/src/share/vm/classfile/systemDictionary.cpp Mon Dec 07 17:11:00 2015 -0800
@@ -1245,6 +1245,11 @@
ik->restore_unshareable_info(loader_data, protection_domain, CHECK_(nh));
}
+ if (HotswapDeoptClassPath != NULL) {
+ if (strstr(HotswapDeoptClassPath, ik->external_name()) != NULL)
+ ik->set_deoptimization_incl(true);
+ }
+
if (TraceClassLoading) {
ResourceMark rm;
tty->print("[Loaded %s", ik->external_name());
diff -r 5c1a815b73ab src/share/vm/code/codeCache.cpp
--- a/src/share/vm/code/codeCache.cpp Mon Dec 07 17:08:29 2015 -0800
+++ b/src/share/vm/code/codeCache.cpp Mon Dec 07 17:11:00 2015 -0800
@@ -707,6 +707,13 @@
}
#endif // HOTSWAP
+// Deoptimize all methods having deopt-include flag
+void CodeCache::mark_all_incl_nmethods_for_deoptimization() {
+ MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
+ FOR_ALL_ALIVE_NMETHODS(nm) {
+ nm->mark_for_deoptimization_incl();
+ }
+}
// Deoptimize all methods
void CodeCache::mark_all_nmethods_for_deoptimization() {
diff -r 5c1a815b73ab src/share/vm/code/codeCache.hpp
--- a/src/share/vm/code/codeCache.hpp Mon Dec 07 17:08:29 2015 -0800
+++ b/src/share/vm/code/codeCache.hpp Mon Dec 07 17:11:00 2015 -0800
@@ -185,6 +185,7 @@
// tells how many nmethods have dependencies
static int number_of_nmethods_with_dependencies();
+ static void mark_all_incl_nmethods_for_deoptimization();
static int get_codemem_full_count() { return _codemem_full_count; }
};
diff -r 5c1a815b73ab src/share/vm/code/nmethod.cpp
--- a/src/share/vm/code/nmethod.cpp Mon Dec 07 17:08:29 2015 -0800
+++ b/src/share/vm/code/nmethod.cpp Mon Dec 07 17:11:00 2015 -0800
@@ -476,6 +476,7 @@
_lazy_critical_native = 0;
_has_wide_vectors = 0;
_marked_for_deoptimization = 0;
+ _deoptimization_incl = false;
_lock_count = 0;
_stack_traversal_mark = 0;
_unload_reported = false; // jvmti state
@@ -688,6 +689,7 @@
_dependencies_offset = _scopes_pcs_offset;
_handler_table_offset = _dependencies_offset;
_nul_chk_table_offset = _handler_table_offset;
+
_nmethod_end_offset = _nul_chk_table_offset;
_compile_id = compile_id;
_comp_level = CompLevel_none;
@@ -697,6 +699,8 @@
_exception_cache = NULL;
_pc_desc_cache.reset_to(NULL);
_hotness_counter = NMethodSweeper::hotness_counter_reset_val();
+ if (method != NULL)
+ _deoptimization_incl = method->method_holder()->is_deoptimization_incl();
code_buffer->copy_values_to(this);
if (ScavengeRootsInCode) {
@@ -772,6 +776,7 @@
_metadata_offset = _oops_offset + round_to(code_buffer->total_oop_size(), oopSize);
_scopes_data_offset = _metadata_offset + round_to(code_buffer->total_metadata_size(), wordSize);
_scopes_pcs_offset = _scopes_data_offset;
+
_dependencies_offset = _scopes_pcs_offset;
_handler_table_offset = _dependencies_offset;
_nul_chk_table_offset = _handler_table_offset;
@@ -784,6 +789,8 @@
_exception_cache = NULL;
_pc_desc_cache.reset_to(NULL);
_hotness_counter = NMethodSweeper::hotness_counter_reset_val();
+ if (method != NULL)
+ _deoptimization_incl = method->method_holder()->is_deoptimization_incl();
code_buffer->copy_values_to(this);
if (ScavengeRootsInCode) {
@@ -900,6 +907,9 @@
_exception_cache = NULL;
_pc_desc_cache.reset_to(scopes_pcs_begin());
+ if (method != NULL)
+ _deoptimization_incl = method->method_holder()->is_deoptimization_incl();
+
// Copy contents of ScopeDescRecorder to nmethod
code_buffer->copy_values_to(this);
debug_info->copy_to(this);
diff -r 5c1a815b73ab src/share/vm/code/nmethod.hpp
--- a/src/share/vm/code/nmethod.hpp Mon Dec 07 17:08:29 2015 -0800
+++ b/src/share/vm/code/nmethod.hpp Mon Dec 07 17:11:00 2015 -0800
@@ -184,6 +184,8 @@
bool _marked_for_reclamation; // Used by NMethodSweeper (set only by sweeper)
bool _marked_for_deoptimization; // Used for stack deoptimization
+ bool _deoptimization_incl;
+
// used by jvmti to track if an unload event has been posted for this nmethod.
bool _unload_reported;
@@ -470,6 +472,11 @@
bool is_marked_for_deoptimization() const { return _marked_for_deoptimization; }
void mark_for_deoptimization() { _marked_for_deoptimization = true; }
+ bool is_deoptimization_incl() const { return _deoptimization_incl; }
+ void set_deoptimization_incl(bool z) { _deoptimization_incl = z; }
+
+ void mark_for_deoptimization_incl() { if (_deoptimization_incl) _marked_for_deoptimization = true; }
+
void make_unloaded(BoolObjectClosure* is_alive, oop cause);
bool has_dependencies() { return dependencies_size() != 0; }
diff -r 5c1a815b73ab src/share/vm/oops/klass.cpp
--- a/src/share/vm/oops/klass.cpp Mon Dec 07 17:08:29 2015 -0800
+++ b/src/share/vm/oops/klass.cpp Mon Dec 07 17:11:00 2015 -0800
@@ -188,6 +188,7 @@
set_redefinition_flags(Klass::NoRedefinition);
set_redefining(false);
+ set_deoptimization_incl(false);
set_new_version(NULL);
set_old_version(NULL);
set_redefinition_index(-1);
@@ -236,6 +237,8 @@
if (FastSuperclassLimit == 0) {
// None of the other machinery matters.
set_super(k);
+ if (k != NULL && k->is_deoptimization_incl())
+ set_deoptimization_incl(true);
return;
}
if (k == NULL) {
@@ -247,6 +250,8 @@
"initialize this only once to a non-trivial value");
set_super(k);
Klass* sup = k;
+ if (sup->is_deoptimization_incl())
+ set_deoptimization_incl(true);
int sup_depth = sup->super_depth();
juint my_depth = MIN2(sup_depth + 1, (int)primary_super_limit());
if (!can_be_primary_super_slow())
diff -r 5c1a815b73ab src/share/vm/oops/klass.hpp
--- a/src/share/vm/oops/klass.hpp Mon Dec 07 17:08:29 2015 -0800
+++ b/src/share/vm/oops/klass.hpp Mon Dec 07 17:11:00 2015 -0800
@@ -177,6 +177,7 @@
bool _original_field_offsets_changed; // Did the original field offsets of this class change during class redefinition?
int * _update_information; // Update information
bool _is_redefining;
+ bool _deoptimization_incl; // True if class methods are included in deoptimization
// Biased locking implementation and statistics
// (the 64-bit chunk goes first, to avoid some fragmentation)
@@ -263,6 +264,9 @@
int *update_information() const { return _update_information; }
void set_update_information(int *info) { _update_information = info; }
+ bool is_deoptimization_incl() const { return _deoptimization_incl; }
+ void set_deoptimization_incl(bool z) { _deoptimization_incl = z; }
+
// Revision number for redefined classes, -1 for originally loaded classes
bool was_redefined() const { return _revision_number != -1; }
jint revision_number() const { return _revision_number; }
diff -r 5c1a815b73ab src/share/vm/prims/jvmtiRedefineClasses2.cpp
--- a/src/share/vm/prims/jvmtiRedefineClasses2.cpp Mon Dec 07 17:08:29 2015 -0800
+++ b/src/share/vm/prims/jvmtiRedefineClasses2.cpp Mon Dec 07 17:11:00 2015 -0800
@@ -443,6 +443,8 @@
new_class->set_redefinition_flags(redefinition_flags);
+ new_class->set_deoptimization_incl(true);
+
_max_redefinition_flags = _max_redefinition_flags | redefinition_flags;
if ((redefinition_flags & Klass::ModifyInstances) != 0) {
@@ -1568,7 +1570,10 @@
if (0 && JvmtiExport::all_dependencies_are_recorded()) {
Universe::flush_evol_dependents_on(k_h);
} else {
- CodeCache::mark_all_nmethods_for_deoptimization();
+ if (HotswapDeoptClassPath == NULL)
+ CodeCache::mark_all_nmethods_for_deoptimization();
+ else
+ CodeCache::mark_all_incl_nmethods_for_deoptimization();
ResourceMark rm(THREAD);
DeoptimizationMarker dm;
diff -r 5c1a815b73ab src/share/vm/runtime/globals.hpp
--- a/src/share/vm/runtime/globals.hpp Mon Dec 07 17:08:29 2015 -0800
+++ b/src/share/vm/runtime/globals.hpp Mon Dec 07 17:11:00 2015 -0800
@@ -3947,7 +3947,15 @@
\
product_pd(bool, PreserveFramePointer, \
"Use the FP register for holding the frame pointer " \
- "and not as a general purpose register.")
+ "and not as a general purpose register.") \
+ \
+ product(ccstr, HotswapDeoptClassPath, NULL, \
+ "Class path or fragment of the class path to a folder with " \
+ "classes allowed to be deoptimized on hotswap. If is not " \
+ "defined then all classes will be deoptimized on hotswap. " \
+ "That's default behaviour. Using this option the performance " \
+ "of hotswap can be considerably increased. ")
+
/*
* Macros for factoring of globals
|
