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Previously each malloc size class would keep around a limited number of unused blocks which were marked with MADV_SET_VOLATILE which could then be reinitialized when additional blocks were needed. This changes malloc() so that it also keeps around a number of blocks without marking them with MADV_SET_VOLATILE. I termed these "hot" blocks whereas blocks which were marked as MADV_SET_VOLATILE are called "cold" blocks because they're more expensive to reinitialize. In the worst case this could increase memory usage per process by 1MB when a program requests a bunch of memory and frees all of it. Also, in order to make more efficient use of these unused blocks they're now shared between size classes. |
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| .. | ||
| CMakeLists.txt | ||
| Emulator.cpp | ||
| Emulator.h | ||
| Emulator_syscalls.cpp | ||
| main.cpp | ||
| MallocTracer.cpp | ||
| MallocTracer.h | ||
| MmapRegion.cpp | ||
| MmapRegion.h | ||
| Range.cpp | ||
| Range.h | ||
| RangeAllocator.cpp | ||
| RangeAllocator.h | ||
| Region.cpp | ||
| Region.h | ||
| Report.h | ||
| SimpleRegion.cpp | ||
| SimpleRegion.h | ||
| SoftCPU.cpp | ||
| SoftCPU.h | ||
| SoftMMU.cpp | ||
| SoftMMU.h | ||
| ValueWithShadow.h | ||