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8046598: Scalable Native memory tracking development

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Enhance scalability of native memory tracking

Reviewed-by: coleenp, ctornqvi, gtriantafill
This commit is contained in:
Zhengyu Gu 2014-08-07 12:18:58 -07:00
parent 40b035d141
commit f0cf82f571
72 changed files with 5166 additions and 6109 deletions
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39
hotspot/src/os/linux/vm/os_linux.cpp
View file

@ -3504,9 +3504,12 @@ char* os::Linux::reserve_memory_special_huge_tlbfs_mixed(size_t bytes, size_t al
assert(is_ptr_aligned(start, alignment), "Must be");
// os::reserve_memory_special will record this memory area.
// Need to release it here to prevent overlapping reservations.
MemTracker::record_virtual_memory_release((address)start, bytes);
if (MemTracker::tracking_level() > NMT_minimal) {
// os::reserve_memory_special will record this memory area.
// Need to release it here to prevent overlapping reservations.
Tracker tkr = MemTracker::get_virtual_memory_release_tracker();
tkr.record((address)start, bytes);
}
char* end = start + bytes;
@ -3601,7 +3604,7 @@ char* os::reserve_memory_special(size_t bytes, size_t alignment, char* req_addr,
}
// The memory is committed
MemTracker::record_virtual_memory_reserve_and_commit((address)addr, bytes, mtNone, CALLER_PC);
MemTracker::record_virtual_memory_reserve_and_commit((address)addr, bytes, CALLER_PC);
}
return addr;
@ -3617,24 +3620,30 @@ bool os::Linux::release_memory_special_huge_tlbfs(char* base, size_t bytes) {
}
bool os::release_memory_special(char* base, size_t bytes) {
assert(UseLargePages, "only for large pages");
MemTracker::Tracker tkr = MemTracker::get_virtual_memory_release_tracker();
bool res;
if (MemTracker::tracking_level() > NMT_minimal) {
Tracker tkr = MemTracker::get_virtual_memory_release_tracker();
res = os::Linux::release_memory_special_impl(base, bytes);
if (res) {
tkr.record((address)base, bytes);
}
} else {
res = os::Linux::release_memory_special_impl(base, bytes);
}
return res;
}
bool os::Linux::release_memory_special_impl(char* base, size_t bytes) {
assert(UseLargePages, "only for large pages");
bool res;
if (UseSHM) {
res = os::Linux::release_memory_special_shm(base, bytes);
} else {
assert(UseHugeTLBFS, "must be");
res = os::Linux::release_memory_special_huge_tlbfs(base, bytes);
}
if (res) {
tkr.record((address)base, bytes);
} else {
tkr.discard();
}
return res;
}