Adpaptive Partitioning Scheduler: Navigating the Source #

What is it#

Where is the source?#

Browse the source in /ker/aps/. Also any checkout of the whole kernel, done affter 2008-02-29, will include the aps source.

Other things you may need to know:

• How to Build
  • APS Build guilde and try it
• The user's header file:
  • /sevices/system/pubilc/sys/sched_aps.h. Include it as <sys/sched_aps.h>
• The aps utility command:
  • utils/a/aps

What is the file structure of /services/system/ker/aps#

aps_alg.c, .h 
    algorithm for which partition to schedule a thread from 

aps_application_error.c
        once function for forcing reboots when a partition goes bankrupt. 
    (just so the crash message will say "application error" rather than "nano_aps.c") 

aps_config.c 
        implements the api functions in ker_aps.c to configure the scheduler


aps_crit.c, .h 
    handling of critical time and partition bankruptcy 

aps_data.c, .h 
    definitions, and init routines, for partition data structures, including the scheduling window
    also contains the function to create the first partition, System. 

aps_time.c
    function to time execution of threads: microbill 
    hook into clock interrupt handler for rotating the scheduling and reporting windows

aps_trace.c
    tracelogger functions 

init_aps.S 
    linkage to make the aps scheduler into kernel module: libmod_aps.a 
    
ker_aps.c 
    implements the SchedCtl function for the aps subcommands. Contains parameter checking, 
    security checking. Invokes functions in aps_config.c once it locks the kernel 

nano_aps.c
    analog of ker/nano_sched.c. Implementation of scheduling primitives ready(), block_and_ready(),
    mark_running() and reched() 
    Also contains code to initialize aps. 

proto_aps.h
    function prototypes for all of aps.