4360113: Evict nmethods when code cache gets full

Speculatively unload the oldest nmethods when code cache gets full.

Reviewed-by: never, kvn
This commit is contained in:
Eric Caspole 2010-01-29 09:27:22 -08:00 committed by Vladimir Kozlov
parent 9aa675b7e6
commit a57d68e35b
19 changed files with 452 additions and 76 deletions

View file

@ -2146,19 +2146,8 @@ AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) {
// CodeCache is full, disable compilation
// Ought to log this but compile log is only per compile thread
// and we're some non descript Java thread.
UseInterpreter = true;
if (UseCompiler || AlwaysCompileLoopMethods ) {
#ifndef PRODUCT
warning("CodeCache is full. Compiler has been disabled");
if (CompileTheWorld || ExitOnFullCodeCache) {
before_exit(JavaThread::current());
exit_globals(); // will delete tty
vm_direct_exit(CompileTheWorld ? 0 : 1);
}
#endif
UseCompiler = false;
AlwaysCompileLoopMethods = false;
}
MutexUnlocker mu(AdapterHandlerLibrary_lock);
CompileBroker::handle_full_code_cache();
return NULL; // Out of CodeCache space
}
entry->relocate(B->instructions_begin());
@ -2282,19 +2271,8 @@ nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method) {
// CodeCache is full, disable compilation
// Ought to log this but compile log is only per compile thread
// and we're some non descript Java thread.
UseInterpreter = true;
if (UseCompiler || AlwaysCompileLoopMethods ) {
#ifndef PRODUCT
warning("CodeCache is full. Compiler has been disabled");
if (CompileTheWorld || ExitOnFullCodeCache) {
before_exit(JavaThread::current());
exit_globals(); // will delete tty
vm_direct_exit(CompileTheWorld ? 0 : 1);
}
#endif
UseCompiler = false;
AlwaysCompileLoopMethods = false;
}
MutexUnlocker mu(AdapterHandlerLibrary_lock);
CompileBroker::handle_full_code_cache();
}
return nm;
}