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b1d81974b2
This is useful for thing like Item_true and Item_false that we allocated and initalize once and want to ensure that nothing can change them Main changes: - Memory protection is achived by allocating memory with mmap() and protect it from write with mprotect() - init_alloc_root(...,MY_ROOT_USE_MPROTECT) will create a memroot that one can later use with protect_root() to turn it read only or turn it back to read-write. All allocations to this memroot is done with mmap() to ensure page alligned allocations. - alloc_root() code was rearranged to combine normal and valgrind code. - init_alloc_root() now changes block size to be power of 2's, to get less memory fragmentation. - Changed MEM_ROOT structure to make it smaller. Also renamed MEM_ROOT m_psi_key to psi_key. - Moved MY_THREAD_SPECIFIC marker in MEM_ROOT from block size (old hack) to flags. - Added global variable my_system_page_size. This is initialized at startup. |
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| .. | ||
| mysql-test/storage_engine | ||
| CMakeLists.txt | ||
| ha_myisammrg.cc | ||
| ha_myisammrg.h | ||
| myrg_close.c | ||
| myrg_create.c | ||
| myrg_def.h | ||
| myrg_delete.c | ||
| myrg_extra.c | ||
| myrg_info.c | ||
| myrg_locking.c | ||
| myrg_open.c | ||
| myrg_panic.c | ||
| myrg_queue.c | ||
| myrg_range.c | ||
| myrg_records.c | ||
| myrg_rfirst.c | ||
| myrg_rkey.c | ||
| myrg_rlast.c | ||
| myrg_rnext.c | ||
| myrg_rnext_same.c | ||
| myrg_rprev.c | ||
| myrg_rrnd.c | ||
| myrg_rsame.c | ||
| myrg_static.c | ||
| myrg_update.c | ||
| myrg_write.c | ||