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light-jdk7u51-deopt-cp.patch
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light-jdk7u51-deopt-cp.patch
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diff --git a/src/share/vm/classfile/classFileParser.cpp b/src/share/vm/classfile/classFileParser.cpp
index 8590ad1..7e35b1a 100644
--- a/src/share/vm/classfile/classFileParser.cpp
+++ b/src/share/vm/classfile/classFileParser.cpp
@@ -3798,6 +3798,11 @@
}
}
+ if (cfs->source() != NULL && HotswapDeoptClassPath != NULL) {
+ if (strstr(cfs->source(), HotswapDeoptClassPath) != NULL)
+ this_klass->set_deoptimization_incl(true);
+ }
+
if (TraceClassResolution) {
// print out the superclass.
const char * from = Klass::cast(this_klass())->external_name();
diff --git a/src/share/vm/classfile/systemDictionary.cpp b/src/share/vm/classfile/systemDictionary.cpp
index 3f64268..124c39c 100644
--- a/src/share/vm/classfile/systemDictionary.cpp
+++ b/src/share/vm/classfile/systemDictionary.cpp
@@ -1256,6 +1256,11 @@
}
}
+ 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 --git a/src/share/vm/code/codeCache.cpp b/src/share/vm/code/codeCache.cpp
index 70574bc..722ecfd 100644
--- a/src/share/vm/code/codeCache.cpp
+++ b/src/share/vm/code/codeCache.cpp
@@ -713,6 +713,13 @@
}
#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 --git a/src/share/vm/code/codeCache.hpp b/src/share/vm/code/codeCache.hpp
index a670805..0206b48 100644
--- a/src/share/vm/code/codeCache.hpp
+++ b/src/share/vm/code/codeCache.hpp
@@ -186,6 +186,7 @@
#endif // HOTSWAP
static void mark_all_nmethods_for_deoptimization();
+ static void mark_all_incl_nmethods_for_deoptimization();
static int mark_for_deoptimization(methodOop dependee);
static void make_marked_nmethods_zombies();
static void make_marked_nmethods_not_entrant();
diff --git a/src/share/vm/code/nmethod.cpp b/src/share/vm/code/nmethod.cpp
index 59f5f7e..b7d0742 100644
--- a/src/share/vm/code/nmethod.cpp
+++ b/src/share/vm/code/nmethod.cpp
@@ -465,6 +465,7 @@
_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
@@ -673,6 +674,9 @@
_exception_cache = NULL;
_pc_desc_cache.reset_to(NULL);
+ if (method != NULL)
+ _deoptimization_incl = Klass::cast(method->method_holder())->is_deoptimization_incl();
+
code_buffer->copy_oops_to(this);
if (ScavengeRootsInCode && detect_scavenge_root_oops()) {
CodeCache::add_scavenge_root_nmethod(this);
@@ -754,6 +758,9 @@
_osr_entry_point = NULL;
_exception_cache = NULL;
_pc_desc_cache.reset_to(NULL);
+
+ if (method != NULL)
+ _deoptimization_incl = Klass::cast(method->method_holder())->is_deoptimization_incl();
code_buffer->copy_oops_to(this);
debug_only(verify_scavenge_root_oops());
@@ -863,6 +870,9 @@
_exception_cache = NULL;
_pc_desc_cache.reset_to(scopes_pcs_begin());
+ if (method != NULL)
+ _deoptimization_incl = Klass::cast(method->method_holder())->is_deoptimization_incl();
+
// Copy contents of ScopeDescRecorder to nmethod
code_buffer->copy_oops_to(this);
debug_info->copy_to(this);
diff --git a/src/share/vm/code/nmethod.hpp b/src/share/vm/code/nmethod.hpp
index 8d76afb..d2d1acc 100644
--- a/src/share/vm/code/nmethod.hpp
+++ b/src/share/vm/code/nmethod.hpp
@@ -169,6 +169,8 @@
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;
@@ -412,6 +414,11 @@
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 --git a/src/share/vm/oops/klass.cpp b/src/share/vm/oops/klass.cpp
index a928777..d3714b7 100644
--- a/src/share/vm/oops/klass.cpp
+++ b/src/share/vm/oops/klass.cpp
@@ -163,6 +163,7 @@
kl->set_redefinition_flags(Klass::NoRedefinition);
kl->set_redefining(false);
+ kl->set_deoptimization_incl(false);
kl->set_new_version(NULL);
kl->set_old_version(NULL);
kl->set_redefinition_index(-1);
@@ -233,6 +234,8 @@
if (FastSuperclassLimit == 0) {
// None of the other machinery matters.
set_super(k);
+ if (k != NULL && k->klass_part()->is_deoptimization_incl())
+ set_deoptimization_incl(true);
return;
}
if (k == NULL) {
@@ -244,6 +247,8 @@
"initialize this only once to a non-trivial value");
set_super(k);
Klass* sup = k->klass_part();
+ 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 --git a/src/share/vm/oops/klass.hpp b/src/share/vm/oops/klass.hpp
index bf242d9..884deae 100644
--- a/src/share/vm/oops/klass.hpp
+++ b/src/share/vm/oops/klass.hpp
@@ -292,6 +292,7 @@
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
#ifndef PRODUCT
int _verify_count; // to avoid redundant verifies
@@ -376,6 +377,9 @@
else { return _old_version->klass_part()->is_same_or_older_version(klass); }
}
+ 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
jint revision_number() const {
return _revision_number;
diff --git a/src/share/vm/prims/jvmtiRedefineClasses.cpp b/src/share/vm/prims/jvmtiRedefineClasses.cpp
index cb90823..6836fae 100644
--- a/src/share/vm/prims/jvmtiRedefineClasses.cpp
+++ b/src/share/vm/prims/jvmtiRedefineClasses.cpp
@@ -482,6 +482,8 @@
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) {
@@ -1857,7 +1859,10 @@
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 --git a/src/share/vm/runtime/globals.hpp b/src/share/vm/runtime/globals.hpp
index 341b399..1e8b1b0 100644
--- a/src/share/vm/runtime/globals.hpp
+++ b/src/share/vm/runtime/globals.hpp
@@ -3650,7 +3650,13 @@
product(bool, EnableTracing, false, \
"Enable event-based tracing") \
product(bool, UseLockedTracing, false, \
- "Use locked-tracing when doing event-based tracing")
+ "Use locked-tracing when doing event-based tracing") \
+ 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