[PATCH v19 0/6] introduce memarea library

[Chengwen Feng <fengchengwen@huawei.com>]

The memarea library is an allocator of variable-size object which based
on a memory region. The main features are as follows:

- The memory region can be initialized from the following memory
  sources:
  1. HEAP: e.g. invoke rte_malloc_socket.
  2. LIBC: e.g. invoke posix_memalign.
  3. Another memarea: it can be from another memarea.

- It supports MT-safe as long as it's specified at creation time.

- The address returned by the allocator is align to 8B.

Note:
a) The memarea is oriented towards the application layer, which could
provides 'region-based memory management' [1] function.
b) The eal library also provide memory zone/heap management, but these
are tied to huge pages management.

[1] https://en.wikipedia.org/wiki/Region-based_memory_management

Chengwen Feng (6):
  memarea: introduce memarea library
  test/memarea: support memarea test
  memarea: support alloc and free API
  test/memarea: support alloc and free API test
  memarea: support dump API
  test/memarea: support dump API test

---
v19:
* address Anatoly's comments about test_memarea: more meaningful error
  tips, and display really allocated num of dump memarea.
* in that test_memarea, explicitly set rte_errno to zero if test that
  rte_errno is a non-zero value.
* don't support windows platform because CI unit-test always failed with:
  MALLOC_PERTURB_=169 DPDK_TEST=memarea_autotest
v18:
* v17 reports DPDK CI apply failed, but it maybe the CI self problem
  because I apply the serial to main and next-net, both are successful,
  so this version just resend v17.
v17:
* address Anatoly's comments: add note and enum for cookie and typo.
v16:
* fix compile failed when clang with thread-safety-analysis
  (by disable annotate_locks in lib/memarea/meson.build).
* add reserved field for 'struct rte_memarea_param' which address
  Stephen's comments.
* fix typo.
v15:
* rebase 23.07
* address Anatoly's mostly comments: use rte_errno, abstract cookie
  helper, more comment about critical function, rename add with split,
  doc limitation.
v14:
* address Stephen's comments: RTE_MEMAREA_LOG use easy impl and add
  __func__ print.
v13:
* address Morten's comments: make debug cookies optional, controlled
  by RTE_LIBRTE_MEMAREA_DEBUG; disabled by default.
* reduce management data overhead.
v12:
* remove rte_memarea_refcnt_update() API which address Dongdong's
  comments.
* refine the variable naming.
* fix some bugs.
v11:
* rebase 23.03
* remove "app/test: add memarea to malloc-perf-autotest" because the
  two algorithm are not comparable which also address previous
  comments.
v10:
* support windows platform.
* add rte_memarea.libc perftest to malloc-perf-autotest.
v9:
* address Dmitry's comments.
* drop features of SOURCE_USER and backup memarea mechanism.
* rename rte_memarea_update_refcnt to rte_memarea_refcnt_update
  to keep with rte_mbuf_refcnt_update name style.
* fix memarea perftest compile failed at windows platform.
* fix spell warning.
v8:
* address Mattias's comments (rename ALG_DEFAULT with ALG_NEXTFIT).
* small feature patches are combined.
* enhanced backup memory mechanism.
* add memarea to malloc-perf-autotest.
* other tiny naming optimize.
v7:
* repost patches as there are spread over different series in patchwork.
v6:
* address Mattias's comments.
v5:
* fix 09/10 patch spell warning.
v4:
* repost patches as there are spread over different series in patchwork.
v3:
* add memory source of RTE memory.
* add algorithm field to facilitate the introduction of new algorithms.
* fix memarea log don't output problem.
v2:
* fix compile issues reported by dpdk-test-report.
* address Dimitry and Jerin's comments.
* add no MT-safe test.

 MAINTAINERS                            |   6 +
 app/test/meson.build                   |   2 +
 app/test/test_memarea.c                | 438 +++++++++++++++++++++++
 doc/api/doxy-api-index.md              |   3 +-
 doc/api/doxy-api.conf.in               |   1 +
 doc/guides/prog_guide/index.rst        |   1 +
 doc/guides/prog_guide/memarea_lib.rst  |  57 +++
 doc/guides/rel_notes/release_23_07.rst |   6 +
 lib/memarea/memarea_private.h          | 126 +++++++
 lib/memarea/meson.build                |  18 +
 lib/memarea/rte_memarea.c              | 463 +++++++++++++++++++++++++
 lib/memarea/rte_memarea.h              | 208 +++++++++++
 lib/memarea/version.map                |  15 +
 lib/meson.build                        |   1 +
 14 files changed, 1344 insertions(+), 1 deletion(-)
 create mode 100644 app/test/test_memarea.c
 create mode 100644 doc/guides/prog_guide/memarea_lib.rst
 create mode 100644 lib/memarea/memarea_private.h
 create mode 100644 lib/memarea/meson.build
 create mode 100644 lib/memarea/rte_memarea.c
 create mode 100644 lib/memarea/rte_memarea.h
 create mode 100644 lib/memarea/version.map

-- 
2.17.1