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8023191: OSR nmethods should be flushed to free space in CodeCache

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Treat OSR nmethods like normal nmethods and flush them if they are cold/unused.

Reviewed-by: kvn
This commit is contained in:
Tobias Hartmann 2016-03-18 09:32:29 +01:00
parent 2b48dbfd93
commit ba7e4da495
6 changed files with 90 additions and 50 deletions
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17
hotspot/src/share/vm/code/nmethod.hpp
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@ -207,7 +207,7 @@ class nmethod : public CodeBlob {
unsigned int _has_wide_vectors:1; // Preserve wide vectors at safepoints
// Protected by Patching_lock
volatile unsigned char _state; // {alive, not_entrant, zombie, unloaded}
volatile unsigned char _state; // {in_use, not_entrant, zombie, unloaded}
volatile unsigned char _unloading_clock; // Incremented after GC unloaded/cleaned the nmethod
@ -438,7 +438,20 @@ class nmethod : public CodeBlob {
bool is_alive() const { return _state == in_use || _state == not_entrant; }
bool is_not_entrant() const { return _state == not_entrant; }
bool is_zombie() const { return _state == zombie; }
bool is_unloaded() const { return _state == unloaded; }
bool is_unloaded() const { return _state == unloaded; }
// returns a string version of the nmethod state
const char* state() const {
switch(_state) {
case in_use: return "in use";
case not_entrant: return "not_entrant";
case zombie: return "zombie";
case unloaded: return "unloaded";
default:
fatal("unexpected nmethod state: %d", _state);
return NULL;
}
}
#if INCLUDE_RTM_OPT
// rtm state accessing and manipulating