// Add memory pool(s) for one generation
void MemoryService::add_generation_memory_pool(Generation* gen,
MemoryManager* major_mgr,
MemoryManager* minor_mgr) {
Generation::Name kind = gen->kind();
int index = _pools_list->length();
switch (kind) {
case Generation::DefNew: {
assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
DefNewGeneration* young_gen = (DefNewGeneration*) gen;
// Add a memory pool for each space and young gen doesn't
// support low memory detection as it is expected to get filled up.
MemoryPool* eden = add_space(young_gen->eden(),
"Eden Space",
true, /* is_heap */
young_gen->max_eden_size(),
false /* support_usage_threshold */);
MemoryPool* survivor = add_survivor_spaces(young_gen,
"Survivor Space",
true, /* is_heap */
young_gen->max_survivor_size(),
false /* support_usage_threshold */);
break;
}
case Generation::MarkSweepCompact: {
assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager");
add_gen(gen,
"Tenured Gen",
true, /* is_heap */
true /* support_usage_threshold */);
break;
}
default:
assert(false, "should not reach here");
// no memory pool added for others
break;
}
assert(major_mgr != NULL, "Should have at least one manager");
// Link managers and the memory pools together
for (int i = index; i < _pools_list->length(); i++) {
MemoryPool* pool = _pools_list->at(i);
major_mgr->add_pool(pool);
if (minor_mgr != NULL) {
minor_mgr->add_pool(pool);
}
}
}
// Add memory pool(s) for one generation
void MemoryService::add_generation_memory_pool(Generation* gen,
MemoryManager* major_mgr,
MemoryManager* minor_mgr) {
guarantee(gen != NULL, "No generation for memory pool");
Generation::Name kind = gen->kind();
int index = _pools_list->length();
switch (kind) {
case Generation::DefNew: {
assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
DefNewGeneration* young_gen = (DefNewGeneration*) gen;
// Add a memory pool for each space and young gen doesn't
// support low memory detection as it is expected to get filled up.
MemoryPool* eden = add_space(young_gen->eden(),
"Eden Space",
true, /* is_heap */
young_gen->max_eden_size(),
false /* support_usage_threshold */);
MemoryPool* survivor = add_survivor_spaces(young_gen,
"Survivor Space",
true, /* is_heap */
young_gen->max_survivor_size(),
false /* support_usage_threshold */);
break;
}
#if INCLUDE_ALL_GCS
case Generation::ParNew:
case Generation::ASParNew:
{
assert(major_mgr != NULL && minor_mgr != NULL, "Should have two managers");
// Add a memory pool for each space and young gen doesn't
// support low memory detection as it is expected to get filled up.
ParNewGeneration* parnew_gen = (ParNewGeneration*) gen;
MemoryPool* eden = add_space(parnew_gen->eden(),
"Par Eden Space",
true /* is_heap */,
parnew_gen->max_eden_size(),
false /* support_usage_threshold */);
MemoryPool* survivor = add_survivor_spaces(parnew_gen,
"Par Survivor Space",
true, /* is_heap */
parnew_gen->max_survivor_size(),
false /* support_usage_threshold */);
break;
}
#endif // INCLUDE_ALL_GCS
case Generation::MarkSweepCompact: {
assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager");
add_gen(gen,
"Tenured Gen",
true, /* is_heap */
true /* support_usage_threshold */);
break;
}
#if INCLUDE_ALL_GCS
case Generation::ConcurrentMarkSweep:
case Generation::ASConcurrentMarkSweep:
{
assert(major_mgr != NULL && minor_mgr == NULL, "Should have only one manager");
ConcurrentMarkSweepGeneration* cms = (ConcurrentMarkSweepGeneration*) gen;
MemoryPool* pool = add_cms_space(cms->cmsSpace(),
"CMS Old Gen",
true, /* is_heap */
cms->reserved().byte_size(),
true /* support_usage_threshold */);
break;
}
#endif // INCLUDE_ALL_GCS
default:
assert(false, "should not reach here");
// no memory pool added for others
break;
}
assert(major_mgr != NULL, "Should have at least one manager");
// Link managers and the memory pools together
for (int i = index; i < _pools_list->length(); i++) {
MemoryPool* pool = _pools_list->at(i);
major_mgr->add_pool(pool);
if (minor_mgr != NULL) {
minor_mgr->add_pool(pool);
}
}
}
