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Turn pthread_spinlock_t into a self-contained object. On uni-processor
configurations, interrupts are disabled in the lock/trylock operations
and the previous interrupt status is restored in the corresponding
unlock operations. On SMP configurations, a ticket lock is a acquired
and released in addition.
The self-contained pthread_spinlock_t object is defined by Newlib in
<sys/_pthreadtypes.h>.
typedef struct {
struct _Ticket_lock_Control _lock;
__uint32_t _interrupt_state;
} pthread_spinlock_t;
This implementation is simple and efficient. However, this test case of
the Linux Test Project would fail due to call of printf() and sleep()
during spin lock ownership:
https://github.com/linux-test-project/ltp/blob/master/testcases/open_posix_testsuite/conformance/interfaces/pthread_spin_lock/1-2.c
There is only limited support for profiling on SMP configurations.
Delete CORE spinlock implementation.
Update #2674.
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Script does what is expected and tries to do it as
smartly as possible.
+ remove occurrences of two blank comment lines
next to each other after Id string line removed.
+ remove entire comment blocks which only exited to
contain CVS Ids
+ If the processing left a blank line at the top of
a file, it was removed.
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* psxrwlock01/main.c, psxspin01/main.c: Now accounts for extra stack
requested for initialization task.
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* include/pmacros.h, psx01/init.c, psx01/system.h, psx13/main.c,
psxbarrier01/main.c, psxchroot01/main.c, psxfatal_support/init.c,
psxfile01/main.c, psxfile01/test.c, psxmount/main.c, psxrdwrv/main.c,
psxreaddir/main.c, psxrwlock01/main.c, psxspin01/main.c,
psxstat/main.c, psxtime/main.c: Change TEST_INIT to CONFIGURE_INIT.
Make tmacros.h available to all POSIX tests. Add a clock_settime case
for < 1988.
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* psxrwlock01/.cvsignore, psxrwlock01/Makefile.am, psxrwlock01/main.c,
psxrwlock01/psxrwlock01.scn, psxrwlock01/test.c,
psxspin01/.cvsignore, psxspin01/Makefile.am, psxspin01/main.c,
psxspin01/psxspin01.scn, psxspin01/test.c: New files.
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