tree 38229f033397e105b9c3f919f49eeecc8dd0ae87
parent ec92a0765980ae931b59642e3a2b2ac310189b23
author sewardj <sewardj@a5019735-40e9-0310-863c-91ae7b9d1cf9> 1161049884 +0000
committer sewardj <sewardj@a5019735-40e9-0310-863c-91ae7b9d1cf9> 1161049884 +0000

Merge r6148:

Minor adjustments to the scheduler, mostly cosmetic.

- rename VG_(kill_thread) to VG_(get_thread_out_of_syscall), which
  is what it actually does.

- Remove 'semaphore' terminology in places and use 'lock' instead.

- Give an extra 'HChar* who' arg to VG_(set_running) and 
  VG_(set_sleeping), which is printed when --trace-sched=yes.
  This makes it easier to make sense of lock ownership changes
  from the debug output.

- various other improvements to debug printing

- add a kludge to encourage the AIX scheduler to switch threads
  more often when more than one is runnable (am not claiming to 
  understand this); otherwise CPU starvation can appear to happen

- more assertions in sema.c (the pipe-based lock); cycle the token
  through 'A' to 'Z' to make strace/truss output more understandable;
  fix longstanding bug wherein sema_down() tries to read two bytes
  even though sema_up only writes one.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@6281 a5019735-40e9-0310-863c-91ae7b9d1cf9