Barriers fixed and tested more extensively.

	* barrier.c: Fix several bugs in all routines. Now passes
	tests/barrier5.c which is fairly rigorous. There is still
	a non-optimal work-around for a race condition between
	the barrier breeched event signal and event wait. Basically
	the last (signalling) thread to hit the barrier yields
	to allow any other threads, which may have lost the race,
	to complete.

tests/ChangeLog:
	* barrier3.c: Fixed.
	* barrier4.c: Fixed.
	* barrier5.c: New; proves that all threads in the group
	reaching the barrier wait and then resume together. Repeats
	the test using groups of 1 to 16 threads. Each group of
	threads must negotiate a large number of barriers (10000).
	* spin4.c: Fixed.
	* test.h (error_string): Modified the success (0) value.

1 files changed, 18 insertions, 0 deletions

diff --git a/Nmakefile.tests b/Nmakefile.tests
index 8e124ab..109a995 100644
--- a/Nmakefile.tests
+++ b/Nmakefile.tests
@@ -79,6 +79,15 @@ cleanup3::	cleanup3.c
 priority1::     priority1.c

 priority2::     priority2.c

 inherit1::      inherit1.c

+spin1::         spin1.c

+spin2::         spin2.c

+spin3::         spin3.c

+spin4::         spin4.c

+barrier1::      barrier1.c

+barrier2::      barrier2.c

+barrier3::      barrier3.c

+barrier4::      barrier4.c

+barrier5::      barrier5.c

 exception1::	exception1.c

 exception2::	exception2.c

 exception3::	exception3.c

@@ -139,6 +148,15 @@ cleanup3	:test:	cleanup2
 priority1       :test:  join1

 priority2       :test:  priority1

 inherit1        :test:  join1

+spin1           :test:

+spin2           :test:  spin1.c

+spin3           :test:  spin2.c

+spin4           :test:  spin3.c

+barrier1        :test:

+barrier2        :test:  barrier1.c

+barrier3        :test:  barrier2.c

+barrier4        :test:  barrier3.c

+barrier5        :test:  barrier4.c

 benchtest1      :test:  mutex3

 benchtest2      :test:  benchtest1

 benchtest3      :test:  benchtest2