blob: b61597bd2e34768d1ca46dbe95e4c923eb248006 [file] [log] [blame]
// Copyright 2011 Google Inc. All Rights Reserved.
#include "mark_stack.h"
#include <sys/mman.h>
#include "UniquePtr.h"
#include "globals.h"
#include "logging.h"
#include "utils.h"
namespace art {
MarkStack* MarkStack::Create() {
UniquePtr<MarkStack> mark_stack(new MarkStack);
mark_stack->Init();
return mark_stack.release();
}
void MarkStack::Init() {
size_t length = 64 * MB;
mem_map_.reset(MemMap::MapAnonymous("dalvik-mark-stack", NULL, length, PROT_READ | PROT_WRITE));
if (mem_map_.get() == NULL) {
std::string maps;
ReadFileToString("/proc/self/maps", &maps);
LOG(FATAL) << "couldn't allocate mark stack\n" << maps;
}
byte* addr = mem_map_->GetAddress();
CHECK(addr != NULL);
base_ = reinterpret_cast<const Object**>(addr);
limit_ = reinterpret_cast<const Object**>(addr + length);
ptr_ = reinterpret_cast<Object const**>(addr);
int result = madvise(addr, length, MADV_DONTNEED);
if (result == -1) {
PLOG(WARNING) << "madvise failed";
}
}
MarkStack::~MarkStack() {}
} // namespace art