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[sanitizer] increase the maximum size class of the fast allocator. This should save quite a bit of memory in tsan/msan (and later in asan). This also puts more stress on the large allocator. Add a couple of checks 

llvm-svn: 171055
This commit is contained in:
Kostya Serebryany 2012-12-25 07:50:35 +00:00
parent 774defc649
commit ad24c58e16
2 changed files with 7 additions and 4 deletions
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9
compiler-rt/lib/sanitizer_common/sanitizer_allocator.h
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@ -153,7 +153,7 @@ class SizeClassMap {
}
};
typedef SizeClassMap<21, 256, 16> DefaultSizeClassMap;
typedef SizeClassMap<15, 256, 16> DefaultSizeClassMap;
typedef SizeClassMap<15, 64, 14> CompactSizeClassMap;
@ -323,9 +323,9 @@ class SizeClassAllocator64 {
COMPILER_CHECK((kRegionSize) >= (1ULL << (SANITIZER_WORDSIZE / 2)));
// Populate the free list with at most this number of bytes at once
// or with one element if its size is greater.
static const uptr kPopulateSize = 1 << 18;
static const uptr kPopulateSize = 1 << 15;
// Call mmap for user memory with at least this size.
static const uptr kUserMapSize = 1 << 18;
static const uptr kUserMapSize = 1 << 15;
// Call mmap for metadata memory with at least this size.
static const uptr kMetaMapSize = 1 << 16;
@ -715,6 +715,7 @@ class LargeMmapAllocator {
{
SpinMutexLock l(&mutex_);
uptr idx = n_chunks_++;
CHECK_LT(idx, kMaxNumChunks);
h->chunk_idx = idx;
chunks_[idx] = h;
}
@ -757,6 +758,8 @@ class LargeMmapAllocator {
// At least page_size_/2 metadata bytes is available.
void *GetMetaData(void *p) {
// Too slow: CHECK_EQ(p, GetBlockBegin(p));
CHECK(IsAligned(reinterpret_cast<uptr>(p), page_size_));
return GetHeader(p) + 1;
}

2
compiler-rt/lib/sanitizer_common/tests/sanitizer_allocator_test.cc
View File

@ -44,7 +44,7 @@ typedef SizeClassAllocator32<
template <class SizeClassMap>
void TestSizeClassMap() {
typedef SizeClassMap SCMap;
SCMap::Print();
// SCMap::Print();
SCMap::Validate();
}