cvs commit: src/sys/kern kern_mutex.c subr_turnstile.c src/sys/sys turnstile.h

[John Baldwin]

jhb         2006-01-27 22:42:12 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             kern_mutex.c subr_turnstile.c 
    sys/sys              turnstile.h 
  Log:
  - Add support for having both a shared and exclusive queue of threads in
    each turnstile.  Also, allow for the owner thread pointer of a turnstile
    to be NULL.  This is needed for the upcoming reader/writer lock
    implementation.
  - Add a new ddb command 'show turnstile' that will look up the turnstile
    associated with the given lock argument and display useful information
    like the list of threads blocked on each queue, etc.  If there isn't an
    active turnstile for a lock at the specified address, then the function
    will see if there is an active turnstile at the specified address and
    display info about it if so.
  - Adjust the mutex code to handle the turnstile API changes.
  
  Tested on:      i386 (all), alpha, amd64, sparc64 (1 and 3)
  
  Revision  Changes    Path
  1.167     +6 -5      src/sys/kern/kern_mutex.c
  1.156     +174 -47   src/sys/kern/subr_turnstile.c
  1.9       +13 -5     src/sys/sys/turnstile.h