archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-26 06:14:49 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

7199092: NMT: NMT needs to deal overlapped virtual memory ranges

Browse source 
Enhanced virtual memory tracking to track committed regions as well as reserved regions, so NMT now can generate virtual memory map.

Reviewed-by: acorn, coleenp
This commit is contained in:
Zhengyu Gu 2012-10-19 21:40:07 -04:00
parent 240b5c9329
commit 3e481cdd81
29 changed files with 800 additions and 364 deletions
Download patch file Download diff file Expand all files Collapse all files

9
hotspot/src/os/bsd/vm/perfMemory_bsd.cpp
View file

@ -30,6 +30,7 @@
#include "os_bsd.inline.hpp"
#include "runtime/handles.inline.hpp"
#include "runtime/perfMemory.hpp"
#include "services/memTracker.hpp"
#include "utilities/exceptions.hpp"
// put OS-includes here
@ -753,6 +754,10 @@ static char* mmap_create_shared(size_t size) {
// clear the shared memory region
(void)::memset((void*) mapAddress, 0, size);
// it does not go through os api, the operation has to record from here
MemTracker::record_virtual_memory_reserve((address)mapAddress, size, CURRENT_PC);
MemTracker::record_virtual_memory_type((address)mapAddress, mtInternal);
return mapAddress;
}
@ -912,6 +917,10 @@ static void mmap_attach_shared(const char* user, int vmid, PerfMemory::PerfMemor
"Could not map PerfMemory");
}
// it does not go through os api, the operation has to record from here
MemTracker::record_virtual_memory_reserve((address)mapAddress, size, CURRENT_PC);
MemTracker::record_virtual_memory_type((address)mapAddress, mtInternal);
*addr = mapAddress;
*sizep = size;