archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-27 23:04:50 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

4360113: Evict nmethods when code cache gets full

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

10
hotspot/src/share/vm/runtime/compilationPolicy.cpp
View file

@ -66,7 +66,7 @@ bool CompilationPolicy::mustBeCompiled(methodHandle m) {
if (!canBeCompiled(m)) return false;
return !UseInterpreter || // must compile all methods
(UseCompiler && AlwaysCompileLoopMethods && m->has_loops()); // eagerly compile loop methods
(UseCompiler && AlwaysCompileLoopMethods && m->has_loops() && CompileBroker::should_compile_new_jobs()); // eagerly compile loop methods
}
// Returns true if m is allowed to be compiled
@ -137,7 +137,7 @@ void SimpleCompPolicy::method_invocation_event( methodHandle m, TRAPS) {
reset_counter_for_invocation_event(m);
const char* comment = "count";
if (!delayCompilationDuringStartup() && canBeCompiled(m) && UseCompiler) {
if (!delayCompilationDuringStartup() && canBeCompiled(m) && UseCompiler && CompileBroker::should_compile_new_jobs()) {
nmethod* nm = m->code();
if (nm == NULL ) {
const char* comment = "count";
@ -162,7 +162,7 @@ void SimpleCompPolicy::method_back_branch_event(methodHandle m, int branch_bci,
int hot_count = m->backedge_count();
const char* comment = "backedge_count";
if (!m->is_not_osr_compilable() && !delayCompilationDuringStartup() && canBeCompiled(m)) {
if (!m->is_not_osr_compilable() && !delayCompilationDuringStartup() && canBeCompiled(m) && CompileBroker::should_compile_new_jobs()) {
CompileBroker::compile_method(m, loop_top_bci, m, hot_count, comment, CHECK);
NOT_PRODUCT(trace_osr_completion(m->lookup_osr_nmethod_for(loop_top_bci));)
@ -204,7 +204,7 @@ void StackWalkCompPolicy::method_invocation_event(methodHandle m, TRAPS) {
reset_counter_for_invocation_event(m);
const char* comment = "count";
if (m->code() == NULL && !delayCompilationDuringStartup() && canBeCompiled(m) && UseCompiler) {
if (m->code() == NULL && !delayCompilationDuringStartup() && canBeCompiled(m) && UseCompiler && CompileBroker::should_compile_new_jobs()) {
ResourceMark rm(THREAD);
JavaThread *thread = (JavaThread*)THREAD;
frame fr = thread->last_frame();
@ -248,7 +248,7 @@ void StackWalkCompPolicy::method_back_branch_event(methodHandle m, int branch_bc
int hot_count = m->backedge_count();
const char* comment = "backedge_count";
if (!m->is_not_osr_compilable() && !delayCompilationDuringStartup() && canBeCompiled(m)) {
if (!m->is_not_osr_compilable() && !delayCompilationDuringStartup() && canBeCompiled(m) && CompileBroker::should_compile_new_jobs()) {
CompileBroker::compile_method(m, loop_top_bci, m, hot_count, comment, CHECK);
NOT_PRODUCT(trace_osr_completion(m->lookup_osr_nmethod_for(loop_top_bci));)