diff options
Diffstat (limited to 'nuttx/TODO')
| -rw-r--r-- | nuttx/TODO | 86 |
1 files changed, 30 insertions, 56 deletions
diff --git a/nuttx/TODO b/nuttx/TODO index c302760ab..b5958f397 100644 --- a/nuttx/TODO +++ b/nuttx/TODO @@ -1,4 +1,4 @@ -NuttX TODO List (Last updated January 23, 2013) +NuttX TODO List (Last updated January 30, 2013) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This file summarizes known NuttX bugs, limitations, inconsistencies with @@ -7,14 +7,14 @@ standards, things that could be improved, and ideas for enhancements. nuttx/ (11) Task/Scheduler (sched/) - (1) Memory Managment (mm/) + (2) Memory Managment (mm/) (3) Signals (sched/, arch/) (2) pthreads (sched/) (2) C++ Support (6) Binary loaders (binfmt/) - (17) Network (net/, drivers/net) + (16) Network (net/, drivers/net) (4) USB (drivers/usbdev, drivers/usbhost) - (12) Libraries (libc/, ) + (11) Libraries (libc/, ) (9) File system/Generic drivers (fs/, drivers/) (5) Graphics subystem (graphics/) (1) Pascal add-on (pcode/) @@ -161,25 +161,6 @@ o Task/Scheduler (sched/) Status: Open Priority: Medium Low for now - Title: IMPROVED TASK CONTROL BLOCK STRUCTURE - Description: All task resources that are shared amongst threads have - their own "break-away", reference-counted structure. The - Task Control Block (TCB) of each thread holds a reference - to each breakaway structure (see include/nuttx/sched.h). - It would be more efficent to have one reference counted - structure that holds all of the shared resources. - - These are the current shared structures: - - Environment varaibles (struct environ_s) - - PIC data space and address environments (struct dspace_s) - - File descriptors (struct filelist) - - FILE streams (struct streamlist) - - Sockets (struct socketlist) - Status: Open - Priority: Low. This is an enhancement. It would slight reduce - memory usage but would also increase coupling. These - resources are nicely modular now. - Title: ISSUES WITH atexit() AND on_exit() Description: These functions execute with the following bad properties: @@ -212,6 +193,16 @@ o Task/Scheduler (sched/) Status: Open Priority: Low (it might as well be low since it isn't going to be fixed). + Title: errno IS NOT SHARED AMONG THREADS + Description: In NuttX, the errno value is unique for each thread. But for + bug-for-bug compatibility, the same errno should be shared by + the task and each thread that it creates. It is *very* easy + to make this change: Just move the pterrno field from + _TCB to struct task_group_s. However, I am still not sure + if this should be done or not. + Status: Open + Priority: Low + o Memory Managment (mm/) ^^^^^^^^^^^^^^^^^^^^^^ @@ -278,6 +269,19 @@ o Memory Managment (mm/) Priority: Medium/Low, a good feature to prevent memory leaks but would have negative impact on memory usage and code size. + Title: CONTAINER ALLOCATOR + Description: There are several places where the logic requires allocation of + a tiny structure that just contains pointers to other things or + small amounts of data that needs to be bundled together. There + are examples net/net_poll.c and numerous other places. + + I am wondering if it would not be good create a pool of generic + containers (say void *[4]). There re-use these when we need + small containers. The code in sched/task_childstatus.c might + be generalized for this purpose. + Status: Open + Priority: Very low (I am not even sure that this is a good idea yet). + o Signals (sched/, arch/) ^^^^^^^^^^^^^^^^^^^^^^^ @@ -413,6 +417,9 @@ o Binary loaders (binfmt/) Description: Not all of the NXFLAT test under apps/examples/nxflat are working. Most simply do not compile yet. tests/mutex runs okay but outputs garbage on completion. + + Update: 13-27-1, tests/mutex crashed with a memory corruption + problem the last time that I ran it. Status: Open Priority: High @@ -667,21 +674,6 @@ o Network (net/, drivers/net) Status: Open Priority: Low... fix defconfig files as necessary. - Title: net_poll() DOES NOT HANDLE LOSS-OF-CONNECTION CORRECTLY - Description: When a loss of connection is detected by any logic waiting on the - networking events, the function net_lostconnection() must be called. - That function just sets some bits in the socket structure so that - it remembers that the connection is lost. - - That is currently done in recvfrom(), send(), and net_monitor.c. But - it is not done in the net_poll() logic; that logic correctly sets - the POLLHUP status, but it does not call net_lostconnection(). As a - result, if recv() is called after the poll() or select(), the system - will hang because the recv() does not know that the connection has - been lost. - Status: Open - Priority: High - o USB (drivers/usbdev, drivers/usbhost) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -820,19 +812,6 @@ o Libraries (libc/) Status: Open Priority: ?? - Title: SYSLOG INTEGRATION - Description: There are the beginnings of some system logging capabilities (see - drivers/syslog, fs/fs_syslog.c, and libc/stdio/lib_librawprintf.c and - lib_liblowprintf.c. For NuttX, SYSLOG is a concept and includes, - extends, and replaces the legacy NuttX debug ouput. Some additional - integration is required to formalized this. For example: - - o lib_rawprintf() shjould be renamed syslog(). - o debug.h should be renamed syslog.h - o And what about lib_lowprintf()? llsyslog? - Status: Open - Priority: Low -- more of a roadmap - Title: FLOATING POINT FORMATS Description: Only the %f floating point format is supported. Others are accepted but treated like %f. @@ -1526,11 +1505,6 @@ o ARM/STM32 (arch/arm/src/stm32/) Status: Open Priority: Low - Title: STM32 F4 USB OTG FS DEVICE-SIDE DRIVER - Description: This driver is reported to be buggy and to need some TLC. - Status: Open - Priority: High - o AVR (arch/avr) ^^^^^^^^^^^^^^ |