Commit Graph

374 Commits

Author SHA1 Message Date
Xiang Xiao
3ea8d574fe mm: Implement malloc_usable_size
defined here:
https://man7.org/linux/man-pages/man3/malloc_usable_size.3.html

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I5988bb28375626188312bd0a0ba3fc12db66f644
2020-08-24 03:36:44 -07:00
SPRESENSE
e249a2f82f Makefile: Fix Make.dep not updated by config changes
Make.dep file should be updated by .config changed after first make.
There are 2 cases affected for this problem:

 1) Add source files by config symbol
 2) Include header files in #ifdef directive

These 2 cases may not be included in Make.dep and this may prevent the
differential build from working correctly.
2020-07-28 03:59:45 -05:00
Brennan Ashton
e87617f9fa nxstyle: fixup style issues in mm_realloc.c
Signed-off-by: Brennan Ashton <bashton@brennanashton.com>
2020-06-29 14:56:26 -07:00
Brennan Ashton
fcd6e1c7eb mm: Do not memcopy more than oldsize when realloc
When realloc up from a mem area to a larger one where a new node
is needed. The the larger memory region is copied from the source
this can both leak data as well as cause memory faults accesssing
invalid data.

This was first reported by Kwonsk

Signed-off-by: Brennan Ashton <bashton@brennanashton.com>
2020-06-29 14:56:26 -07:00
YAMAMOTO Takashi
875828b698 Add a missing stdlib.h -> malloc.h change for mallinfo 2020-06-15 09:06:28 -06:00
YAMAMOTO Takashi
a607e6257f Include malloc.h instead of stdlib.h for mallinfo()
This change also removes the malloc.h inclusion in stdlib.h
to break the build if there are still users of mallinfo() with stdlib.h.
2020-06-15 07:21:19 -06:00
Xiang Xiao
7e5b0f81e9 build: Replace -I with INCDIR
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-05-24 20:20:12 +01:00
Xiang Xiao
23668a4b9b build: Remove the empty variable assignment
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-05-24 08:24:13 -06:00
Xiang Xiao
dd61d3d9f9 build: Remve the unnecessary .gitignore
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-05-23 18:00:40 +01:00
Xiang Xiao
1a95cce1a3 build: Move .config check to the top Makefile
remove the workaround to handle the inexistence of .config/Make.defs

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-05-20 17:57:34 +01:00
Xiang Xiao
5eae32577e build: Move INCDIROPT to common place
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-05-18 15:02:55 -06:00
Gregory Nutt
a569006fd8 sched/: Make more naming consistent
Rename various functions per the quidelines of https://cwiki.apache.org/confluence/display/NUTTX/Naming+of+OS+Internal+Functions

    nxsem_setprotocol -> nxsem_set_protocol
    nxsem_getprotocol -> nxsem_get_protocol
    nxsem_getvalue -> nxsem_get_value
2020-05-17 14:01:00 -03:00
Gregory Nutt
4b44b628ea Run nxstyle against all .c and .h files modified by this PR.
All complaints fixed except for those that were not possible to fix:

- Used of Mixed case identifier in ESP32 files.  These are references to Expressif ROM functions which are outside of the scope of NuttX.
2020-05-09 14:19:08 -03:00
Gregory Nutt
a4218e2144 include/nuttx/sched.h: Make naming of all internal names consistent:
1. Add internal scheduler functions should begin with nxsched_, not sched_
2. Follow the consistent naming patter of https://cwiki.apache.org/confluence/display/NUTTX/Naming+of+OS+Internal+Functions
2020-05-09 14:19:08 -03:00
Xiang Xiao
d9d2fc0d0a debug: Reduce CONFIG_CPP_HAVE_VARARGS usage
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-05-05 08:27:58 -06:00
Xiang Xiao
a2f657e4cb build: Move KDEFINE to a common place(tools/Config.mk)
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-05-01 15:56:55 -06:00
Xiang Xiao
f2aba8d9b7 build: Remove 'u' prefix from userspace library
so user needn't link the different library because the build type change

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-05-01 15:56:55 -06:00
Xiang Xiao
f8a809eb5b Fix nxstyle issue
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-05-01 10:43:47 -03:00
Xiang Xiao
eca7059785 Refine __KERNEL__ and CONFIG_BUILD_xxx usage in the code base
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-05-01 10:43:47 -03:00
Xiang Xiao
ddda00ea65 Kconfig: Refine BUILD_FLAT, BUILD_PROTECTED and BUILD_KERNEL usage
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-04-29 12:16:18 -06:00
Gregory Nutt
fd38623aac mm/iob/iob_clone.c: Correct newline character
Another place where /n is used where \n was intended.
2020-04-29 18:11:00 +01:00
Masayuki Ishikawa
ad9db974cb mm: Fix heap corruption in protected build
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
2020-04-22 13:45:56 +08:00
Masayuki Ishikawa
12ff2212f5 mm: mm_heap: Fix deadlock in mm_trysemaphore in SMP mode
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
2020-04-13 12:06:07 +08:00
Gregory Nutt
67ec3d7926 Remove CONFIG_CAN_PASS_STRUCT
This commit resolves issue #620:

Remove CONFIG_CAN_PASS_STRUCTS #620

The configuration option CONFIG_CAN_PASS_STRUCTS was added many years ago to support an old version of the SDCC compiler. That compiler is currently used only with the Z80 and Z180 targets. The limitation of that old compiler was that it could not pass structures or unions as either inputs or outputs. For example:

    #ifdef CONFIG_CAN_PASS_STRUCTS
    struct mallinfo mallinfo(void);
    #else
    int      mallinfo(FAR struct mallinfo *info);
    #endif

And even leads to violation of a few POSIX interfaces like:

    #ifdef CONFIG_CAN_PASS_STRUCTS
    int  sigqueue(int pid, int signo, union sigval value);
    #else
    int  sigqueue(int pid, int signo, FAR void *sival_ptr);
    #endif

This breaks the 1st INVIOLABLES rule:

Strict POSIX compliance
-----------------------

  o Strict conformance to the portable standard OS interface as defined at
    OpenGroup.org.
  o A deeply embedded system requires some special support.  Special
    support must be minimized.
  o The portable interface must never be compromised only for the sake of
    expediency.
  o Expediency or even improved performance are not justifications for
   violation of the strict POSIX interface

Also, it appears that the current SDCC compilers have resolve this issue and so, perhaps, this is no longer a problem: z88dk/z88dk#1132

NOTE:  This commit cannot pass the PR checks because it depends on matching changes to the apps/ directory.
2020-04-11 21:19:47 +01:00
liuhaitao
459ad99373 Use EXTRAFLAGS instead of EXTRADEFINES to be used by make via command line
So call 'make EXTRAFLAGS=-Wno-cpp' could suppress the warnings with pre-processor
directive #warning in GCC.

Change-Id: Iaa618238924c9969bf91db22117b39e6d2fc9bb6
Signed-off-by: liuhaitao <liuhaitao@xiaomi.com>
2020-04-11 08:31:08 -06:00
ligd
ef360394c7 mm/mm_heap: fix mm_heap not support BUILD_FLAT
1. change ifdef __KERNEL__ to:
   if defined(CONFIG_BUILD_FLAT) || defined(__KERNEL__)

2. change mm_delaylist to *mm_delaylist

3. change FAR struct mm_delaynode_s *new to:
   FAR struct mm_delaynode_s *tmp

4. should check mm_trysemaphore() return values

Change-Id: I57ba991f13c3eaf56dc2d71ac946c11669e32dfa
Signed-off-by: ligd <liguiding@fishsemi.com>
2020-04-10 07:49:32 -06:00
ligd
cbf31bca5c global change: fix tools/checkpatch.sh warnnings
Change-Id: I88cfa979c44bcaf3a8f6e036c6bfccd3402ca85a
Signed-off-by: ligd <liguiding@fishsemi.com>
2020-04-09 10:29:28 -06:00
ligd
1d2396353e mm/mm_heap: add mm_delaylist to mm_heap_s struct
Change-Id: I2ffaec5557bf2dd2021baa6cda84bb5318425caa
Signed-off-by: ligd <liguiding@fishsemi.com>
2020-04-09 10:29:28 -06:00
ligd
78eb9f73dd mm/mm_heap/mm_sem.c: add getpid() return check in mm_trysemaphore()
Change-Id: Ifd56e3ccc22cf0a50f52e643b7a87aab0d0dca06
Signed-off-by: ligd <liguiding@fishsemi.com>
2020-04-09 10:29:28 -06:00
Gregory Nutt
156963a903 Check return from nxsem_wait_initialize()
Resolution of Issue 619 will require multiple steps, this part of the first step in that resolution:  Every call to nxsem_wait_uninterruptible() must handle the return value from nxsem_wait_uninterruptible properly.  This commit is only for those files under fs/tmpfs and fs/spiffs.  Still do do:  The rest of fs/ and all of drivers/ and arch/.
2020-03-29 22:11:13 +01:00
Gregory Nutt
97339e47f1 Check return from nxsem_wait_initialize()
Resolution of Issue 619 will require multiple steps, this part of the first step in that resolution:  Every call to nxsem_wait_uninterruptible() must handle the return value from nxsem_wait_uninterruptible properly.  This commit is only for those files under graphics/, mm/, net/, sched/, wireless/bluetooth.

Still to do:  Files under fs/, drivers/, and arch.  The last is 116 files and will take some effort.
2020-03-29 20:11:10 +01:00
Gregory Nutt
5c0e8e88b1 Revert "Makefile: move INCDIROPT to common place (#625)"
This reverts commit b9ace36fcc.

This change was added by PR 625 but has a serious logic flaw.  It removes all occurrences of INCDIROPT and replaces it with a definition in tools/Config.mk:

    else ifeq ($(WINTOOL),y)
      DEFINE = "$(TOPDIR)/tools/define.sh"
      INCDIR = "$(TOPDIR)/tools/incdir.sh" -w

This logic flaw is the Config.mk is included in all Make.defs files BEFORE WINTOOL is defined.  As a result, the definition is wrong in many places when building under Cygwin with a Windows native toolchain.
2020-03-26 08:50:29 -07:00
Xiang Xiao
b9ace36fcc
Makefile: move INCDIROPT to common place (#625) 2020-03-26 08:09:59 -06:00
Nathan Hartman
a5e643b0cd Fix typos in comments and documentation. 2020-03-16 20:01:11 -06:00
Андрей Заболотный
a4e0b23f4f Prevents NuttX crashing if MM_REGIONS is too small.
Added a DEBUGASSERT and a runtime check so that mm_region will not overwrite critical heap data if user incorrectly defines MM_REGIONS.
2020-03-06 10:00:44 -06:00
Gregory Nutt
d1a8a803e4 Build system: Get rid of the MOVEOBJ definition
Eliminate the MOVEOBJ definition from tools/Config.mk, Makefiles, and other locations.  The MOVEOBJ definition was used to work around the case where the object output of a compile or assemble is in a different directory than the source file.  The ZDS-II tools have no command line option to perform this move; MOVEOBJ handled the move as a post-compiler operation.

MOVEOBJ is no longer needed because this the ez80 COMPILE and ASSEMBLE definitions now handle all of the object file movement cases.
2020-02-24 22:37:28 +01:00
Xiang Xiao
cde88cabcc Run codespell -w with the latest dictonary again
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-02-23 22:27:46 +01:00
Gregory Nutt
2ec59121fb Fix non C89 noncompliant code that was causing the ZDS-II compile to fail. 2020-02-19 23:09:10 +01:00
Juha Niskanen
ea72d84c4d /mm/mm_heap/mm_mallinfo.c: Fix assertion broken in 312ea9f9. 2020-02-17 08:06:46 -06:00
Ouss4
312ea9f99e mm/mm_heap: Fix warnings included by #266 2020-02-15 08:00:06 -06:00
YAMAMOTO Takashi
46ad645efc mm: Add a bunch of assertions 2020-02-13 08:21:18 -06:00
Gregory Nutt
1382ea5447 mm/: Coding style clean-up
Run tools/nxstyle against all C files under mm/ and correct coding standard violations.
2020-02-13 15:16:53 +01:00
YAMAMOTO Takashi
3a1515b473 mm_mallinfo: Fix a minfo printf-format 2020-02-13 15:18:53 +08:00
YAMAMOTO Takashi
710da6022d Fix comment typos 2020-02-12 20:39:47 -06:00
YAMAMOTO Takashi
23b30f7930 Fix typos in comments 2020-02-12 12:17:07 +01:00
YAMAMOTO Takashi
e2ce8d5169 Fix a typo in Kconfig description 2020-02-12 12:01:18 +08:00
YAMAMOTO Takashi
342b56ae8b Revert "A workaround for macOS linker"
Unnecessary after "sim: Add -fno-common to KERNEL ARCHCPUFLAGS"

This reverts commit cc90d586c0.
2020-02-05 00:36:58 -08:00
Xiang Xiao
adbff7de81 tools/Config.mk: add DEFINE macro like INCDIR 2020-02-03 15:06:11 -06:00
Xiang Xiao
5c80b94820 Replace #include <semaphore.h> to #include <nuttx/semaphore.h>
Since the kernel side should call nxsem_xxx instead and remove the unused inclusion
2020-02-01 08:27:30 -06:00
Oki Minabe
95dc647c3c mm/umm_heap/: Handle size zero in umm_malloc.c and umm_realloc.c, which causes a system freeze in kernel mode. 2020-02-01 14:03:28 +00:00
Xiang Xiao
80277d1630
Refine the preprocessor conditional guard style (#190) 2020-01-31 19:07:39 +01:00
Xiang Xiao
68951e8d72 Remove exra whitespace from files (#189)
* Remove multiple newlines at the end of files
* Remove the whitespace from the end of lines
2020-01-31 09:24:49 -06:00
minabeoki
1600980a82 fix gran_alloc() miss allocation in mm_granalloc.c. 2020-01-30 12:22:23 -03:00
YAMAMOTO Takashi
cc90d586c0 A workaround for macOS linker
It seems that "ld -r" on macOS doesn't include objects from
libraries for common symbols. Because of that, sim build
ends up with undefined references to globals like g_binfmts
and g_mmheap.

	@(#)PROGRAM:ld  PROJECT:ld64-530
	BUILD 18:57:17 Dec 13 2019
	configured to support archs: armv6 armv7 armv7s arm64 arm64e arm64_32 i386 x86_64 x86_64h armv6m armv7k armv7m armv7em
	LTO support using: LLVM version 11.0.0, (clang-1100.0.33.17) (static support for 23, runtime is 23)
	TAPI support using: Apple TAPI version 11.0.0 (tapi-1100.0.11)
2020-01-29 09:03:48 +01:00
chao.an
c3ba541bd2 Author: Gregory Nutt <gnutt@nuttx.org>
mm/Makefile:  Same change should be applied to mm/Makefile since the mm/ build is identical to the libc/ build.
        libs/libnx/Makefile:  Same change should be applied to libnx/Makefile since the mm/ build is identical to the libc/ build.

    Author: chao.an <anchao@xiaomi.com>

        libs/libc/Makefile:  Correct the dependents path
2020-01-21 08:02:23 -06:00
chao.an
a4aa8ae491 wqueue/notifier: update the work notifier usage
usage changed after commit 90c52e6f8f

Change-Id: Ifb0d739b046a6794b5b3ac177f489fb9a1c5c799
Signed-off-by: chao.an <anchao@xiaomi.com>
2020-01-21 14:16:19 +08:00
Xiang Xiao
346336bb9e Make the read ahead buffer unselectable
Here is the email loop talk about why it is better to remove the option:
https://groups.google.com/forum/#!topic/nuttx/AaNkS7oU6R0

Change-Id: Ib66c037752149ad4b2787ef447f966c77aa12aad
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-01-11 08:24:49 -06:00
Xiang Xiao
6a3c2aded6 Fix wait loop and void cast (#24)
* Simplify EINTR/ECANCEL error handling

1. Add semaphore uninterruptible wait function
2 .Replace semaphore wait loop with a single uninterruptible wait
3. Replace all sem_xxx to nxsem_xxx

* Unify the void cast usage

1. Remove void cast for function because many place ignore the returned value witout cast
2. Replace void cast for variable with UNUSED macro
2020-01-02 10:54:43 -06:00
Xiang Xiao
c5a7da5b7a mm/iob/Kconfig: Make the default of IOB_NCHAINS same as IOB_NBUFFERS. It is reasonable default value since iob_qentry_s is much small than iob_s and could avoid the buffer can be allocated but the chain can't: 'tcp_datahandler: ERROR: Failed to queue the I/O buffer chain: -12' 2019-11-24 10:43:45 -06:00
Nathan Hartman
366053e464 Fix typos, 1 in a #define, others in comments. This changes one definition: _MQ_TIMEDRECIEVE is changed to _MQ_TIMEDRECEIVE. It appears this symbol is not used anywhere. 2019-09-11 08:56:56 -06:00
Gregory Nutt
dd2219c1db mm/iob/iob_statistics.c: Fix an error found in build testing. Must include nuttx/mm/iob.h. 2019-08-19 11:50:52 -06:00
Anthony Merlino
70404ed0dc Merged in antmerlino/nuttx/iobinstrumentation (pull request #1001)
Iobinstrumentation

* mm/iob: Introduces producer/consumer id to every iob call. This is so that the calls can be instrumented to monitor the IOB resources.

* iob instrumentation - Merges producer/consumer enumeration for simpler IOB user.

* fs/procfs: Starts adding support for /proc/iobinfo

* fs/procfs: Finishes first pass of simple IOB user stastics and /proc/iobinfo entry

Approved-by: Gregory Nutt <gnutt@nuttx.org>
2019-08-16 22:42:25 +00:00
Nathan Hartman
68d43d3679 Fix typos. 2019-08-04 14:50:28 -06:00
Gregory Nutt
2dae0ef0db mm/mm_heap/mm_sem.c: Fix error that occurs when CONFIG_CPP_HAVE_VARARGS is not defined. In that case, the arguments to the debug macro will all be evaluated even though they are not used any variables that are references must at least be defined. 2019-06-03 09:02:55 -06:00
Gregory Nutt
b21c12bd18 Fix errors found in build testing:
arch/mips/src:  Previous commit used CP0 register definitions that were not defined in the cp0.h header file.  Probably these were from the Microchip hacked up GCC toolchain but are not generally available.  Fix:  Add definitions to NuttX cp0.h header file.

mm/iob:  Eliminate some warnings about testing the value of an undefined pre-processor variable.
2019-05-25 11:45:22 -06:00
anchao
bb8648e7a0 ibs/libc/Makefile, libs/libnx/Makefile, and mm/Makefile: Remove obj-path MKDEPS option since make dependency target (MT) is not supported by some toolchains. 2019-03-19 10:14:50 -06:00
Gregory Nutt
419c4cb6be A little more progress toward the implementation of per-window framebuffers. Still missing:
- Logic that generates the low lever framebuffer renderers for the per-window framebuffers,
- The logic that picks off the per-window framebuffer updates from normal graphics device updates.  This logic must update both the per-window framebuffer and the graphics device (from the framebuffer).

Squashed commit of the following:

    graphics:  Add logic to allocate the per-window framebuffer.

    graphics:  A few fragmentary thoughts on how a per-window framebuffer could be represented and allocated.
2019-03-14 11:20:14 -06:00
Gregory Nutt
a2e62f557d Squashed commit of the following:
sched/init/nx_bringup.c:  Fix a naming collision.
    sched/init:  Rename os_start() to nx_start()
    sched/init:  Rename os_smp* to nx_smp*
    sched/init:  Rename os_bringup to nx_bringup
    sched/init:  rename all internal static functions to begin with nx_ vs os_
2019-02-04 16:20:35 -06:00
Gregory Nutt
90e4cf4349 mm/umm_heap: sbrk() is only available in the KERNEL build. 2019-02-04 10:32:31 -06:00
Xiang Xiao
fe421022e2 sched/wqueue/kwork_notifier.c and several Kconfig files: Notifier should work with either lpwork or hpwork and other minor typo fix. 2019-01-27 11:02:56 -06:00
Xiang Xiao
b6606e61b4 mm/iob/iob_copyin.c: iob_copyin() should wait for each buffer and adjust the return value of iob_copyin_internal return to simplify the code 2019-01-26 10:48:47 -06:00
Xiang Xiao
2671709e62 mm/umm_heap: Ensure all user allocation try sbrk before fail 2019-01-26 10:42:36 -06:00
Xiang Xiao
3047ef80dc mm/mm_gran/mm_graninfo.c: Fix the wrong data in g_1bit_info and make the internal function static 2019-01-26 10:30:50 -06:00
Xiang Xiao
7d813fb6d3 mm/mm_gran/mm_pgalloc.c: mm/pgalloc: shouldn't just allocate one page always. 2019-01-26 10:21:58 -06:00
Xiang Xiao
5a37ac25a9 mm/shm/shm_initialize.c: Remove some unused, #ifdef'ed out code. 2019-01-26 10:17:21 -06:00
Xiang Xiao
fb4ab391f6 mm/shm/shmget.c: Should call shm_extend to allocate the physical memory 2019-01-26 10:14:42 -06:00
Xiang Xiao
b5e2754d2d mm/shm: Convert bytes to pages by MM_NPAGES instead of MM_PGALIGNUP 2019-01-26 10:11:06 -06:00
Xiang Xiao
1ecc33b7db mm/iob: Miscellaneous changes and fixes from code review. 2019-01-26 09:56:27 -06:00
Xiang Xiao
0354702525 mm/iob/iob_dump.c: Format the whole line before log to avoid the multiple timestamp prefix in each line 2019-01-26 09:44:58 -06:00
Xiang Xiao
ee28417246 mm/iob/iob_notifier.c: Don't check iob_navail in iob_notifier_setup to avoid a potential race condition. 2019-01-26 09:43:54 -06:00
Xiang Xiao
4721381d1c mm/iob/iob_alloc.c: iob_allocwait should decrease semcount manually. 2019-01-26 09:24:12 -06:00
Xiang Xiao
9cef84b6ad mm/kmm_heap/kmm_kernel.c: Remove unused, duplicated kmm_heapmember(). 2019-01-26 08:48:02 -06:00
Xiang Xiao
e2544b7ddf mm/umm_heap/umm_sbrk.c: Pass ARCH_HEAP_VEND as maxbreak argument 2019-01-26 07:29:23 -06:00
Xiang Xiao
e15670a191 mm/mm_heap/mm_sbrk.c: Fix backward conditional test. Should call mm_initialize() when brkaddr equal zero 2019-01-26 07:07:42 -06:00
Gregory Nutt
70efabd0ad mm/mm_heap/mm_calloc.c: Verify that the number of elements times the size of an element will not overflow type size_t. This is required by the SEI CERT C coding style and resolves anonymous Bitbucket Issue #139 2019-01-07 16:13:48 -06:00
Gregory Nutt
40cdc187bb mm/mm_heap/mm_sem.c and sched/task/task_getpid.c: Commits 43d37c866b and f37202cbc0 resolved some problems with the original fix of 91aa26774b. However, Those changes used an internal OS interface (sched_self()) which is not available when the the user-space memory manager is built in the PROTECTED or KERNEL builds and resulted in build failures.
This commit repartitions the logic by moving some of the changes from mm_sem.c into task_getpid.c.  The logic is equivalent for the case of mm_trysemaphore(), but no has wider impact since it potentially affects all callers of getpid().  Hence, this change may also introduce some other issues that will need to be addressed.
2018-12-30 08:41:06 -06:00
Gregory Nutt
86224f9b7e Improve some comments. 2018-12-27 09:32:47 -06:00
David Sidrane
43d37c866b mm/mm_heap/mm_sem.c: Defer freeing if mm is held by a not running task. When the holder is running we can add a holder count. If there is no holder OR it is not running we want to try to take the semaphore. There will not be a count if the task is the holder and not running because it already holds the count. This will result it the deferred free. We will take it when not held and do the free when we can get the count because there was no holder. 2018-12-20 13:39:06 -06:00
Gregory Nutt
f37202cbc0 This is a candidate replacement for the reverted change 91aa26774b
This change adds a check to mm_trysemaphore() (the root implementation of both kmm_trysemaphore() and umm_trysemaphore()).  It checks if the that task that is apparently executing is marked as RUNNING.  If not, how could the non-running task be trying to get the MM semaphore?  I think only in the exact scenario that Eunbong Song has described.

So I think the solution should provide the same protection as 91aa26774b but without the horrific consequences to memory usage.
2018-12-20 10:19:52 -06:00
Petteri Aimonen
fe0532c226 Merged in paimonen/nuttx/pullreq_libc_libnx_updates (pull request #757)
Pullreq libc libnx updates

* NuttX: make strerror() return 'Success' for 0

* NuttX: fix strrchr() so that it considers null terminator as part of string

    From strrchr(3) man page:
    "The terminating null byte is considered part of the string, so that if c
    is specified as '\0', these functions return a pointer to the terminator."

* NuttX: mm_free(): Add DEBUGASSERT()'s to catch memory corruption early.

    It's easier to find the source when asserts fail already when freeing
    an overflowed buffer, than if the corruption is only detected on next
    malloc().

* MM_FILL_ALLOCATIONS: Add debug option to fill all mallocs()

    This is helpful for detecting uninitialized variables,
    especially in C++ code. I seem to be forgetting to initialize
    member variables and then they just get random values..

* NuttX: nxtk_bitmapwindow: Fix warning message when bitmap is fully off-screen.

* nxfonts_getfont: Avoid unnecessary warnings for other whitespace chars also.

* NuttX: Fix kerning of 'I' in Sans17x22 font

    The I character was running together with some other
    characters, e.g. in sequence "IMI".

* NXMU: Revalidate window pointer for mouse events.

    NXMU caches the previous window pointer so that further mouse
    events can be sent to the same window. However, if the window
    is destroyed while mouse button is held down, the pointer may
    become invalid and cause a crash. This patch revalidates the
    pointer before using it.

Approved-by: GregoryN <gnutt@nuttx.org>
2018-11-12 15:36:35 +00:00
Gregory Nutt
dec7ecbd56 net/tcp/tcp_recvwindow.c: In order to receive data we must not only have IOBs available, but we must also have at least one IOB chain qentry available. Otherwise, we will advertise that we an buffer a lot of data when, in fact, we cannot. This is an expermental fix to a performance problem noted by Masayuki Ishikawa. 2018-09-22 09:33:29 -06:00
Gregory Nutt
22da175629 mm/iob: Add a divider that can be used to reduce the rate of IOB notifications. 2018-09-13 06:56:29 -06:00
Gregory Nutt
76eec53e4f mm/iob: iob_navail() was returning the number of free IOB chain queue entries, not the number of free IOBs. Completely misnamed. 2018-09-12 06:40:18 -06:00
Gregory Nutt
11a635dcb3 mm/iob: IOB free notifier should accept the work queue ID as a paramter. The notification may need to run on either the high- or low- priority work queue. sched/work: Change the default priority of the low-priority work queue to 100. 2018-09-11 08:49:39 -06:00
Gregory Nutt
af0ee3c8f7 sched/wqueue: Add an option to work queue notifier so that the notification can occur on different work queues. 2018-09-11 07:22:23 -06:00
Gregory Nutt
39df7ed0c0 mm/iob and sched/semaphore: Work around some issues with the IOB throttle semaphore. It has some odd behaviors that can cause assertions in sem_post(). Also, it seems to get outside of its range occasionally. Need to REVISIT this. 2018-09-10 11:32:09 -06:00
Gregory Nutt
9d3148406c Signals were not a good choice of IPC to implement the poll function for several reasons: In order to handle the asynchrnous poll-related event, a substantial amount of state information is needed. Signals are only capable of passing minimal amounts of data. There are also complexities with performing kernel space signal handlers in kernel space code that is better to avoid. So, instead of signals, the equivalent logic was converted to run via a callback that executes on the high-priority work queue.
Squashed commit of the following:

    Fix up some final compile isses.

    net/netdev:  Convert the network down notification logic to use the new wqueue-based notification factility.

    net/udp:  Convert the UDP readahead notification logic to use the new wqueue-based notification factility.

    net/tcp:  Convert the TCP readahead notification logic to use the new wqueue-based notification factility.

    mm/iob:  Convert the IOB notification logic to use the new wqueue-based notification factility.

    sched/wqueue:  Signals are not good IPCs to support the target poll functionality for several reasons including the amount of data that can be passed with a signal and in the fact that in protected and kernel modes, user threads executing signal handlers in protected, kernel memory is problematic.  Instead, convert the same logic to perform the notifications via function callback on the high priority work queue.
2018-09-09 15:01:44 -06:00
Gregory Nutt
32e3e51678 net/netdev: Add signal notification for the case where the network goes down. 2018-09-09 10:39:25 -06:00
Gregory Nutt
28f73bd928 net/tcp and udp: Add logic to signal events when TCP or UDP read-ahead data is buffered.
Squashed commit of the following:

    net/tcp:  Add signal notification for the case when UDP read-ahead data is buffered.  This is basically of clone of the TCP notification logic with naming adapted for UDP.

    net/tcp:  Add signal notification for the case when TCP read-ahead data is buffered.
2018-09-09 09:21:39 -06:00
Gregory Nutt
fc127fd297 sched/signal: Add a generic signal notification facility. Modify the custom IOB available notifier so that it is now just a wrapper around this generic signal notification. This generic signal notification faility will, eventually, be used to support network polling.
Squashed commit of the following:

    mm/iob:  The IOB available notifier is now just a wrapper around the common signal notifier.

    sched/signal:  Add a generic signal notification facility.

    sched/signal/sig_evthread.c:  More trivial naming changes.

    sched/signal:  Rename nxsig_notification() to nxsig_evthread() to make forthcoming naming additions more consistent.
2018-09-09 08:32:37 -06:00