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8209624: [JVMCI] Invalidate nmethods instead of directly unloading them when the InstalledCode is dropped

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Reviewed-by: kvn
This commit is contained in:
Tom Rodriguez 2018-08-21 08:38:02 -07:00
parent 4ef5590fa7
commit 9c4f2b7294
5 changed files with 30 additions and 20 deletions
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8
src/hotspot/share/code/nmethod.hpp
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@ -78,7 +78,7 @@ class nmethod : public CompiledMethod {
// That is, installed code other than a "default"
// HotSpotNMethod causes nmethod unloading.
// This field is ignored once _jvmci_installed_code is NULL.
bool _jvmci_installed_code_triggers_unloading;
bool _jvmci_installed_code_triggers_invalidation;
#endif
// To support simple linked-list chaining of nmethods:
@ -456,7 +456,7 @@ public:
// Copies the value of the name field in the InstalledCode
// object (if any) associated with this nmethod into buf.
// Returns the value of buf if it was updated otherwise NULL.
char* jvmci_installed_code_name(char* buf, size_t buflen);
char* jvmci_installed_code_name(char* buf, size_t buflen) const;
// Updates the state of the InstalledCode (if any) associated with
// this nmethod based on the current value of _state.
@ -486,7 +486,7 @@ public:
protected:
virtual bool do_unloading_oops(address low_boundary, BoolObjectClosure* is_alive);
#if INCLUDE_JVMCI
// See comment for _jvmci_installed_code_triggers_unloading field.
// See comment for _jvmci_installed_code_triggers_invalidation field.
// Returns whether this nmethod was unloaded.
virtual bool do_unloading_jvmci();
#endif
@ -555,7 +555,7 @@ public:
// Logging
void log_identity(xmlStream* log) const;
void log_new_nmethod() const;
void log_state_change() const;
void log_state_change(oop cause = NULL) const;
// Prints block-level comments, including nmethod specific block labels:
virtual void print_block_comment(outputStream* stream, address block_begin) const {