| Commit message (Collapse) | Author | Age | Files | Lines |
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Update #3117.
Update #3182.
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Update #2514.
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Move sporadic server scheduler parameters to
POSIX_API_Control::Sporadic. Remove redundant scheduler priority
parameter.
Update #2514.
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This member is only used by the sporadic server support.
Update #2514.
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Rename _Watchdog_Per_CPU_insert_monotonic() in
_Watchdog_Per_CPU_insert_ticks().
Update #3117.
Update #3182.
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Rename PER_CPU_WATCHDOG_RELATIVE in PER_CPU_WATCHDOG_MONOTONIC to
highlight the corresponding POSIX CLOCK_MONOTONIC.
Rename PER_CPU_WATCHDOG_ABSOLUTE in PER_CPU_WATCHDOG_REALTIME to
highlight the corresponding POSIX CLOCK_REALTIME.
Update #3117.
Update #3182.
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Update #2514.
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Set default thread processor affinity to all processors of the
pre-allocated set. This allows to constify the
_POSIX_Threads_Default_attributes.
Update #2514.
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Update #2514.
Close #3174.
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Return stack area via pthread_getattr_np().
Simplify
* pthread_attr_setaffinity_np(), and
* pthread_attr_getaffinity_np()
and let the scheduler do the more sophisticated error checks.
Make
* pthread_setaffinity_np(),
* pthread_getaffinity_np(),
* pthread_attr_setaffinity_np(), and
* pthread_attr_getaffinity_np()
available in all configurations.
Update #2514.
Close #3145.
Close #3168.
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POSIX mutexes are now available in all configurations and no longer
depend on --enable-posix.
Update #2514.
Update #3112.
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POSIX condition variables are now available in all configurations and no
longer depend on --enable-posix.
Update #2514.
Update #3113.
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POSIX rwlocks are now available in all configurations and no longer
depend on --enable-posix.
Update #2514.
Update #3115.
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POSIX barriers are now available in all configurations and no longer
depend on --enable-posix.
Update #2514.
Update #3114.
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For semaphore object pointer and object validation see
POSIX_SEMAPHORE_VALIDATE_OBJECT().
Destruction or close of a busy semaphore returns an error status. The
object is not flushed.
POSIX semaphores are now available in all configurations and no longer
depend on --enable-posix.
Update #2514.
Update #3116.
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Close #3125.
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The top-level IO library structures should contain no special-case data.
Update #2859.
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Since we have only one process, sharing between processes is trivial.
Close #3124.
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We should only use the address used to initialize the mutex object
according to POSIX, "2.9.9 Synchronization Object Copies and Alternative
Mappings".
http://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_09_09
Update #3113.
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Use the libio mutex lock instead of the mmap mappings lock.
Updates #2859.
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Update #2859.
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This version of mmap comes from early work done
on the RTL code base circa 2012.
Update #2859.
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Closes #2957.
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Update #2859.
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Add the special thread queue name _Thread_queue_Object_name to mark
thread queues embedded in an object with identifier. Using the special
thread state STATES_THREAD_QUEUE_WITH_IDENTIFIER is not reliable for
this purpose since the thread wait information and thread state are
protected by different SMP locks in separate critical sections. Remove
STATES_THREAD_QUEUE_WITH_IDENTIFIER.
Add and use _Thread_queue_Object_initialize().
Update #2858.
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Add POSIX shared memory manager (Shm). Includes a hook-based
approach for the backing memory storage that defaults to the
Workspace, and a test is provided using the heap. A test is
also provided for the basic use of mmap'ing a shared memory
object. This test currently fails at the mmap stage due to
no support for mmap.
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Update #2674.
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Initialize the thread queue context with invalid data in debug
configurations to catch missing set up steps.
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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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Replace the expected thread dispatch disable level with a thread queue
enqueue callout. This enables the use of _Thread_Dispatch_direct() in
the thread queue enqueue procedure. This avoids impossible exection
paths, e.g. Per_CPU_Control::dispatch_necessary is always true.
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Add priority nodes which contribute to the overall thread priority.
The actual priority of a thread is now an aggregation of priority nodes.
The thread priority aggregation for the home scheduler instance of a
thread consists of at least one priority node, which is normally the
real priority of the thread. The locking protocols (e.g. priority
ceiling and priority inheritance), rate-monotonic period objects and the
POSIX sporadic server add, change and remove priority nodes.
A thread changes its priority now immediately, e.g. priority changes are
not deferred until the thread releases its last resource.
Replace the _Thread_Change_priority() function with
* _Thread_Priority_perform_actions(),
* _Thread_Priority_add(),
* _Thread_Priority_remove(),
* _Thread_Priority_change(), and
* _Thread_Priority_update().
Update #2412.
Update #2556.
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Introduce Thread_queue_Lock_context to contain the context necessary for
thread queue lock and thread wait lock acquire/release operations to
reduce the Thread_Control size.
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updates #2745
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updates #2745
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A 32-bit Priority_Control limits the uptime to 49 days with a 1ms clock
tick in case the EDF scheduler is used. Increase it to 64-bit to enable
proper operation of the EDF scheduler,
Close 2173.
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Introduce map/unmap priority scheduler operations to map thread priority
values from/to the user domain to/from the scheduler domain. Use the
map priority operation to validate the thread priority. The EDF
schedulers use this new operation to distinguish between normal
priorities and priorities obtain through a job release.
Update #2173.
Update #2556.
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Move POSIX API priority validation into _POSIX_Priority_To_core().
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Instead of lowering the priority in case the initial budget is consumed
raise the priority for each new period. Restore the normal priority
once the initial budget is consumed. This makes it later easier to
combine the high priority phase with temporary priority boosts (e.g. via
priority ceiling and inheritance).
Use the thread lock to protect the POSIX thread attributes instead of
the thread state lock. This makes it easier to change the thread
priority and keep the POSIX attributes consistent.
Fixes a false positive use of uninitialized variable warning.
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This field was redundant.
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This field was redundant.
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