1. 03 Sep, 2024 1 commit
    • Meir Shpilraien (Spielrein)'s avatar
      Added new defrag API to allocate and free raw memory. (#13509) · d3d94ccf
      Meir Shpilraien (Spielrein) authored
      All the defrag allocations API expects to get a value and replace it, leaving the old value untouchable.
      In some cases a value might be shared between multiple keys, in such cases we can not simply replace
      it when the defrag callback is called.
      
      To allow support such use cases, the PR adds two new API's to the defrag API:
      
      1. `RM_DefragAllocRaw` - allocate memory base on a given size.
      2. `RM_DefragFreeRaw` - Free the given pointer.
      
      Those API's avoid using tcache so they operate just like `RM_DefragAlloc` but allows the user to split
      the allocation and the memory free operations into two stages and control when those happen.
      
      In addition the PR adds new API to allow the module to receive notifications when defrag start and end: `RM_RegisterDefragCallbacks`
      Those callbacks are the same as `RM_RegisterDefragFunc` but promised to be called and the start
      and the end of the defrag process.
      d3d94ccf
  2. 14 Dec, 2020 1 commit
    • Oran Agra's avatar
      Tests: fix new defrag test to be skipped when not supported (#8185) · 7d9b09ad
      Oran Agra authored
      Additionally the older defrag tests are using an obsolete way to check
      if the defragger is suuported (the error no longer contains "DISABLED").
      this doesn't usually makes a difference since these tests are completely
      skipped if the allocator is not jemalloc, but that would fail if the
      allocator is a jemalloc that doesn't support defrag.
      7d9b09ad
  3. 13 Dec, 2020 1 commit
    • Yossi Gottlieb's avatar
      Modules: add defrag API support. (#8149) · 63c1303c
      Yossi Gottlieb authored
      Add a new set of defrag functions that take a defrag context and allow
      defragmenting memory blocks and RedisModuleStrings.
      
      Modules can register a defrag callback which will be invoked when the
      defrag process handles globals.
      
      Modules with custom data types can also register a datatype-specific
      defrag callback which is invoked for keys that require defragmentation.
      The callback and associated functions support both one-step and
      multi-step options, depending on the complexity of the key as exposed by
      the free_effort callback.
      63c1303c