OrgApache/incubator-nuttx
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incubator-nuttx
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8 Commits

Author SHA1 Message Date
mage1 def007e2d7 add #undef for some libc function 
since it's useful to redirect these functions to others
sometime(e.g. validate the memory before write).

Change-Id: I6253a9231af8809e8362f4bc5a1bd67fb094c3b0
 2021-07-14 15:09:58 -03:00
Xiang Xiao 76cdd5c329 mm: Remove mm_heap_impl_s struct 
it's more simple to make mm_heap_s opaque outside of mm

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I5c8e435f6baba6d22b10c5f7e8d9191104fb5af2
 2021-07-07 04:25:15 -07:00
Alin Jerpelea bcee9c391c mm: Author Gregory Nutt: update licenses to Apache 
Gregory Nutt has submitted the SGA and we can mograte the licenses
to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
 2021-02-09 01:21:53 -08:00
Gregory Nutt 90e4cf4349 mm/umm_heap: sbrk() is only available in the KERNEL build. 2019-02-04 10:32:31 -06:00
Xiang Xiao 2671709e62 mm/umm_heap: Ensure all user allocation try sbrk before fail 2019-01-26 10:42:36 -06:00
Gregory Nutt 59cc4a7a7b Protected mode: Redesign how the user space heap is accessed from the kernel code. It used to call memory management functions in user space via function pointers in the userspace interface. That is inefficient because the first thing that those memory management functions do is to trap back into the kernel to get the current PID. Worse, that operation can be fatal is certain fragile situations such as when a task is exitting. 
The solution is to remove all of the memory management function calls from the interface.  Instead, the interface exports the userspace heap structure and then kernel size implementations of those memory management functions will operate on the userspace heap structure.  This avoids the unnecessary system calls and, more importantly, failures do to freeing memory when a test exits.
 2015-07-10 08:37:02 -06:00
Gregory Nutt b33c2d9cef Move include/nuttx/mm.h to include/nuttx/mm/mm.h 2014-09-24 07:29:09 -06:00
Gregory Nutt 8b8c134efa Move the user heap allocator front-end from mm/. to mm/umm_heap/. 2014-09-22 10:48:58 -06:00