Rev | Line | |
---|
[176] | 1 | #ifndef _GLOBALHEAP_H_ |
---|
| 2 | #define _GLOBALHEAP_H_ |
---|
| 3 | |
---|
| 4 | #include "hoardsuperblock.h" |
---|
| 5 | #include "processheap.h" |
---|
| 6 | |
---|
| 7 | namespace Hoard { |
---|
| 8 | |
---|
| 9 | template <size_t SuperblockSize, |
---|
| 10 | int EmptinessClasses, |
---|
| 11 | class LockType> |
---|
| 12 | class GlobalHeap { |
---|
| 13 | |
---|
| 14 | class bogusThresholdFunctionClass { |
---|
| 15 | public: |
---|
| 16 | static inline bool function (int, int, size_t) { |
---|
| 17 | // We *never* cross the threshold for a process heap. |
---|
| 18 | return false; |
---|
| 19 | } |
---|
| 20 | }; |
---|
| 21 | |
---|
| 22 | public: |
---|
| 23 | |
---|
| 24 | GlobalHeap (void) |
---|
| 25 | : theHeap (getHeap()) |
---|
| 26 | { |
---|
| 27 | } |
---|
| 28 | |
---|
| 29 | typedef ProcessHeap<SuperblockSize, EmptinessClasses, LockType, bogusThresholdFunctionClass> SuperHeap; |
---|
| 30 | typedef HoardSuperblock<LockType, SuperblockSize, GlobalHeap> SuperblockType; |
---|
| 31 | |
---|
| 32 | void put (void * s, size_t sz) { |
---|
| 33 | assert (s); |
---|
| 34 | assert (((SuperblockType *) s)->isValidSuperblock()); |
---|
| 35 | theHeap->put ((typename SuperHeap::SuperblockType *) s, |
---|
| 36 | sz); |
---|
| 37 | } |
---|
| 38 | |
---|
| 39 | SuperblockType * get (size_t sz, void * dest) { |
---|
| 40 | SuperblockType * s = |
---|
| 41 | reinterpret_cast<SuperblockType *> |
---|
| 42 | (theHeap->get (sz, reinterpret_cast<SuperHeap *>(dest))); |
---|
| 43 | if (s) { |
---|
| 44 | assert (s->isValidSuperblock()); |
---|
| 45 | } |
---|
| 46 | return s; |
---|
| 47 | } |
---|
| 48 | |
---|
| 49 | private: |
---|
| 50 | |
---|
| 51 | SuperHeap * theHeap; |
---|
| 52 | |
---|
| 53 | inline static SuperHeap * getHeap (void) { |
---|
| 54 | static double theHeapBuf[sizeof(SuperHeap) / sizeof(double) + 1]; |
---|
| 55 | static SuperHeap * theHeap = new (&theHeapBuf[0]) SuperHeap; |
---|
| 56 | return theHeap; |
---|
| 57 | } |
---|
| 58 | |
---|
| 59 | // Prevent copying. |
---|
| 60 | GlobalHeap (const GlobalHeap&); |
---|
| 61 | GlobalHeap& operator=(const GlobalHeap&); |
---|
| 62 | |
---|
| 63 | }; |
---|
| 64 | |
---|
| 65 | }; |
---|
| 66 | |
---|
| 67 | #endif |
---|
Note: See
TracBrowser
for help on using the repository browser.