| Commit message (Collapse) | Author | Age | Files | Lines |
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Only include the deferred free support if free() is actually used by the
application.
The free() implementation in RTEMS supports that allocated memory is
freed in interrupt context. Since the heap is protected by a mutex, the
frees issued in interrupt context cannot immediately be freed to the
heap, instead they are placed on a deferred free list. This list is
emptied by the core allocation function
rtems_heap_allocate_aligned_with_boundary(). This adds a dependency to
free() in rtems_heap_allocate_aligned_with_boundary(). In order to
better support applications which only allocate memory and never free
it, this dependency should be avoided. Provide a weak default
implementation of _Malloc_Process_deferred_frees() for
rtems_heap_allocate_aligned_with_boundary(). In the free() module
provide the strong implementation.
Close #4032.
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Replace malloc_is_system_state_OK() with _Malloc_System_state() to allow
early allocations, e.g. in bsp_start(). Here the _Thread_Executing is
NULL, thus an _API_Mutex_Lock() would lead to a NULL pointer access.
Move malloc() support code to general case
rtems_heap_allocate_aligned_with_boundary(). Use
rtems_heap_allocate_aligned_with_boundary() to avoid duplicated code.
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Use the heap handler statistics instead. Add heap walk option to MALLOC
shell command.
close #1367
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The work areas (RTEMS work space and C program heap) will be initialized
now in a separate step and are no longer part of
rtems_initialize_data_structures(). Initialization is performed with
tables of Heap_Area entries. This allows usage of scattered memory
areas present on various small scale micro-controllers.
The sbrk() support API changes also. The bsp_sbrk_init() must now deal
with a minimum size for the first memory chunk to take the configured
work space size into account.
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Remove this function and statically initialize RTEMS_Malloc_GC_list.
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Script does what is expected and tries to do it as
smartly as possible.
+ remove occurrences of two blank comment lines
next to each other after Id string line removed.
+ remove entire comment blocks which only exited to
contain CVS Ids
+ If the processing left a blank line at the top of
a file, it was removed.
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* libcsupport/src/free.c, libcsupport/src/malloc.c,
libcsupport/src/malloc_initialize.c, libcsupport/src/malloc_p.h,
libcsupport/src/malloc_sbrk_helpers.c,
libcsupport/src/malloc_statistics_helpers.c,
libcsupport/src/malloc_walk.c, libcsupport/src/mallocfreespace.c,
libcsupport/src/mallocinfo.c, libcsupport/src/realloc.c,
libcsupport/src/rtems_memalign.c, sapi/include/confdefs.h,
score/inline/rtems/score/thread.inl: Add support for optionally
having a unified work area. In other words, the RTEMS Workspace and C
Program Heap are the same pool of memory.
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* libcsupport/Makefile.am: Add src/malloc_dirtier.c.
* libcsupport/include/rtems/malloc.h: Add malloc dirty support.
* libcsupport/src/malloc_p.h: Correct prototype.
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* libcsupport/Makefile.am, libcsupport/include/rtems/malloc.h,
libcsupport/src/free.c, libcsupport/src/malloc.c,
libcsupport/src/malloc_deferred.c,
libcsupport/src/malloc_initialize.c, libcsupport/src/malloc_p.h,
libcsupport/src/malloc_sbrk_helpers.c,
libcsupport/src/posix_memalign.c: Place all deferred free code and
place it in subroutines. Add plugin for dirtying allocated memory to
assist in debugging. Clean up comments and spacing as needed.
* libcsupport/src/malloc_dirtier.c: New file.
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* libcsupport/Makefile.am: Add malloc_sbrk_helpers.c.
* libcsupport/include/rtems/malloc.h,
libcsupport/src/malloc.c, libcsupport/src/malloc_initialize.c,
libcsupport/src/malloc_p.h,
libcsupport/src/malloc_statistics_helpers.c: Make sbrk()
support pluggable and optional. This eliminates the need for
heap extend and sbrk in the minimum footprint which is ~2.5K on
the SPARC.
* sapi/include/confdefs.h: Add the following configuration points:
+ CONFIGURE_MALLOC_STATISTICS
+ CONFIGURE_MALLOC_BSP_SUPPORTS_SBRK
* libcsupport/src/malloc_sbrk_helpers.c: New file.
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* libcsupport/Makefile.am, libcsupport/include/rtems/malloc.h,
libcsupport/src/free.c, libcsupport/src/malloc.c,
libcsupport/src/malloc_p.h,
libcsupport/src/malloc_report_statistics_plugin.c,
libmisc/shell/shell.c, libmisc/shell/shell.h,
score/src/objectinitializeinformation.c: Add posix_memalign. Split
out management of deferred frees to subroutines.
* libcsupport/src/malloc_deferred.c, libcsupport/src/posix_memalign.c: New files.
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* libcsupport/Makefile.am, libcsupport/preinstall.am,
libcsupport/src/malloc.c, libcsupport/src/mallocinfo.c,
libmisc/Makefile.am, libmisc/shell/main_mallocinfo.c,
libmisc/shell/shellconfig.h: Split malloc.c into multiple files with
one function per file. Also split out statistics into a separate file
which can be plugged in dynamically. Right now, it is always in. I
suspect that splitting the file removed more code than leaving
statistics in. I tinkered with malloc information command in the
shell. I resurrected the malloc arena code as malloc boundary. This
code is now compiled all the time even though it does not appear to
work.
* libcsupport/include/rtems/malloc.h, libcsupport/src/_calloc_r.c,
libcsupport/src/_free_r.c, libcsupport/src/_malloc_r.c,
libcsupport/src/_realloc_r.c, libcsupport/src/calloc.c,
libcsupport/src/free.c, libcsupport/src/malloc_boundary.c,
libcsupport/src/malloc_get_statistics.c,
libcsupport/src/malloc_initialize.c, libcsupport/src/malloc_p.h,
libcsupport/src/malloc_report_statistics.c,
libcsupport/src/malloc_report_statistics_plugin.c,
libcsupport/src/malloc_statistics_helpers.c,
libcsupport/src/malloc_walk.c, libcsupport/src/realloc.c,
libmisc/shell/main_perioduse.c: New files.
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