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7124829: NUMA: memory leak on Linux with large pages

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In os::free_memory() use mmap with the same attributes as for the heap space

Reviewed-by: kvn
This commit is contained in:
Aleksey Ignatenko 2011-12-27 16:43:49 -08:00 committed by Igor Veresov
parent 3c164a7525
commit c7ec06ba8e
7 changed files with 10 additions and 10 deletions
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2
hotspot/src/os/bsd/vm/os_bsd.cpp
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@ -2835,7 +2835,7 @@ void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) {
#endif
}
void os::free_memory(char *addr, size_t bytes) {
void os::free_memory(char *addr, size_t bytes, size_t alignment_hint) {
::madvise(addr, bytes, MADV_DONTNEED);
}

4
hotspot/src/os/linux/vm/os_linux.cpp
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@ -2546,8 +2546,8 @@ void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) {
}
}
void os::free_memory(char *addr, size_t bytes) {
commit_memory(addr, bytes, false);
void os::free_memory(char *addr, size_t bytes, size_t alignment_hint) {
commit_memory(addr, bytes, alignment_hint, false);
}
void os::numa_make_global(char *addr, size_t bytes) {

2
hotspot/src/os/solaris/vm/os_solaris.cpp
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@ -2821,7 +2821,7 @@ bool os::commit_memory(char* addr, size_t bytes, size_t alignment_hint,
}
// Uncommit the pages in a specified region.
void os::free_memory(char* addr, size_t bytes) {
void os::free_memory(char* addr, size_t bytes, size_t alignment_hint) {
if (madvise(addr, bytes, MADV_FREE) < 0) {
debug_only(warning("MADV_FREE failed."));
return;

2
hotspot/src/os/windows/vm/os_windows.cpp
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@ -3130,7 +3130,7 @@ bool os::unguard_memory(char* addr, size_t bytes) {
}
void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) { }
void os::free_memory(char *addr, size_t bytes) { }
void os::free_memory(char *addr, size_t bytes, size_t alignment_hint) { }
void os::numa_make_global(char *addr, size_t bytes) { }
void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { }
bool os::numa_topology_changed() { return false; }

6
hotspot/src/share/vm/gc_implementation/shared/mutableNUMASpace.cpp
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@ -282,7 +282,7 @@ void MutableNUMASpace::bias_region(MemRegion mr, int lgrp_id) {
// large page can be broken down if we require small pages.
os::realign_memory((char*)aligned_region.start(), aligned_region.byte_size(), page_size());
// Then we uncommit the pages in the range.
os::free_memory((char*)aligned_region.start(), aligned_region.byte_size());
os::free_memory((char*)aligned_region.start(), aligned_region.byte_size(), page_size());
// And make them local/first-touch biased.
os::numa_make_local((char*)aligned_region.start(), aligned_region.byte_size(), lgrp_id);
}
@ -297,7 +297,7 @@ void MutableNUMASpace::free_region(MemRegion mr) {
assert((intptr_t)aligned_region.start() % page_size() == 0 &&
(intptr_t)aligned_region.byte_size() % page_size() == 0, "Bad alignment");
assert(region().contains(aligned_region), "Sanity");
os::free_memory((char*)aligned_region.start(), aligned_region.byte_size());
os::free_memory((char*)aligned_region.start(), aligned_region.byte_size(), page_size());
}
}
@ -954,7 +954,7 @@ void MutableNUMASpace::LGRPSpace::scan_pages(size_t page_size, size_t page_count
if (e != scan_end) {
if ((page_expected.size != page_size || page_expected.lgrp_id != lgrp_id())
&& page_expected.size != 0) {
os::free_memory(s, pointer_delta(e, s, sizeof(char)));
os::free_memory(s, pointer_delta(e, s, sizeof(char)), page_size);
}
page_expected = page_found;
}

2
hotspot/src/share/vm/gc_implementation/shared/mutableSpace.cpp
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@ -51,7 +51,7 @@ void MutableSpace::numa_setup_pages(MemRegion mr, bool clear_space) {
size_t size = pointer_delta(end, start, sizeof(char));
if (clear_space) {
// Prefer page reallocation to migration.
os::free_memory((char*)start, size);
os::free_memory((char*)start, size, page_size);
}
os::numa_make_global((char*)start, size);
}

2
hotspot/src/share/vm/runtime/os.hpp
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@ -256,7 +256,7 @@ class os: AllStatic {
char *addr, size_t bytes, bool read_only,
bool allow_exec);
static bool unmap_memory(char *addr, size_t bytes);
static void free_memory(char *addr, size_t bytes);
static void free_memory(char *addr, size_t bytes, size_t alignment_hint);
static void realign_memory(char *addr, size_t bytes, size_t alignment_hint);
// NUMA-specific interface