/// middle of emitting a function, and we don't know how large the function we
/// are emitting is.
class DefaultJITMemoryManager : public JITMemoryManager {
+ public:
+ /// DefaultCodeSlabSize - When we have to go map more memory, we allocate at
+ /// least this much unless more is requested. Currently, in 512k slabs.
+ static const size_t DefaultCodeSlabSize = 512 * 1024;
+
+ /// DefaultSlabSize - Allocate globals and stubs into slabs of 64K (probably
+ /// 16 pages) unless we get an allocation above SizeThreshold.
+ static const size_t DefaultSlabSize = 64 * 1024;
+ /// DefaultSizeThreshold - For any allocation larger than 16K (probably
+ /// 4 pages), we should allocate a separate slab to avoid wasted space at
+ /// the end of a normal slab.
+ static const size_t DefaultSizeThreshold = 16 * 1024;
+
+ private:
// Whether to poison freed memory.
bool PoisonMemory;
/// last slab it allocated, so that subsequent allocations follow it.
sys::MemoryBlock allocateNewSlab(size_t size);
- /// DefaultCodeSlabSize - When we have to go map more memory, we allocate at
- /// least this much unless more is requested.
- static const size_t DefaultCodeSlabSize;
-
- /// DefaultSlabSize - Allocate data into slabs of this size unless we get
- /// an allocation above SizeThreshold.
- static const size_t DefaultSlabSize;
-
- /// DefaultSizeThreshold - For any allocation larger than this threshold, we
- /// should allocate a separate slab.
- static const size_t DefaultSizeThreshold;
-
/// getPointerToNamedFunction - This method returns the address of the
/// specified function by using the dlsym function call.
void *getPointerToNamedFunction(const std::string &Name,
return new DefaultJITMemoryManager();
}
-// Allocate memory for code in 512K slabs.
-const size_t DefaultJITMemoryManager::DefaultCodeSlabSize = 512 * 1024;
-
-// Allocate globals and stubs in slabs of 64K. (probably 16 pages)
-const size_t DefaultJITMemoryManager::DefaultSlabSize = 64 * 1024;
-
-// Waste at most 16K at the end of each bump slab. (probably 4 pages)
-const size_t DefaultJITMemoryManager::DefaultSizeThreshold = 16 * 1024;
+const size_t DefaultJITMemoryManager::DefaultCodeSlabSize;
+const size_t DefaultJITMemoryManager::DefaultSlabSize;
+const size_t DefaultJITMemoryManager::DefaultSizeThreshold;