fdb7df230d
This patch adds pthread_getname_np and pthread_setname_np. These were added to glibc in 2.12[1] and are also present in some form on NetBSD and several UNIXes. The code is based on NetBSD's implementation with changes to better match Linux behaviour. Implementation quirks: * pthread_setname_np with a NULL pointer segfaults (as linux) * pthread_setname_np returns ERANGE for names longer than 16 characters (as linux) * pthread_getname_np with a NULL pointer returns EFAULT (as linux) * pthread_getname_np with a buffer length of less than 16 returns ERANGE (as linux) * pthread_getname_np truncates the thread name to fit the buffer length. This guarantees success even when the default thread name is longer than 16 characters, but means there is no way to discover the actual length of the thread name. (Linux always truncates the thread name to 16 characters) * Changing program_invocation_short_name changes the default thread name (on linux, it has no effect on the default thread name) I'll leave it up to you to decide if any of these matter. This is implemented via class pthread_attr to make it easier to add pthread_attr_[gs]etname_np (present in NetBSD and some UNIXes) should it ever be added to Linux (or we decide we want it anyway). [1] https://sourceware.org/git/?p=glibc.git;a=blob;f=NEWS
240 lines
9.1 KiB
C
240 lines
9.1 KiB
C
/* pthread.h: POSIX pthread interface
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Written by Marco Fuykschot <marco@ddi.nl>
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include <sys/types.h>
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#include <signal.h>
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#include <sched.h>
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#include <time.h>
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#ifndef _PTHREAD_H
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#define _PTHREAD_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* Defines. (These are correctly defined here as per
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http://www.opengroup.org/onlinepubs/7908799/xsh/pthread.h.html */
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#define PTHREAD_CANCEL_ASYNCHRONOUS 1
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/* defaults are enable, deferred */
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#define PTHREAD_CANCEL_ENABLE 0
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#define PTHREAD_CANCEL_DEFERRED 0
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#define PTHREAD_CANCEL_DISABLE 1
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#define PTHREAD_CANCELED ((void *)-1)
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/* this should be a value that can never be a valid address */
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#define PTHREAD_COND_INITIALIZER (pthread_cond_t)21
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#define PTHREAD_CREATE_DETACHED 1
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/* the default : joinable */
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#define PTHREAD_CREATE_JOINABLE 0
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#define PTHREAD_EXPLICIT_SCHED 1
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#define PTHREAD_INHERIT_SCHED 0
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#define PTHREAD_MUTEX_RECURSIVE 0
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#define PTHREAD_MUTEX_ERRORCHECK 1
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#define PTHREAD_MUTEX_NORMAL 2
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#define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL
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/* this should be too low to ever be a valid address */
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#define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP (pthread_mutex_t)18
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#define PTHREAD_NORMAL_MUTEX_INITIALIZER_NP (pthread_mutex_t)19
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#define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP (pthread_mutex_t)20
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#define PTHREAD_MUTEX_INITIALIZER PTHREAD_NORMAL_MUTEX_INITIALIZER_NP
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#define PTHREAD_ONCE_INIT { PTHREAD_MUTEX_INITIALIZER, 0 }
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#if defined(_POSIX_THREAD_PRIO_INHERIT) && _POSIX_THREAD_PRIO_INHERIT >= 0
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#define PTHREAD_PRIO_NONE 0
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#define PTHREAD_PRIO_INHERIT 1
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#define PTHREAD_PRIO_PROTECT 2
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#endif
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#define PTHREAD_PROCESS_SHARED 1
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#define PTHREAD_PROCESS_PRIVATE 0
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#define PTHREAD_RWLOCK_INITIALIZER (pthread_rwlock_t)22
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/* process is the default */
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#define PTHREAD_SCOPE_PROCESS 0
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#define PTHREAD_SCOPE_SYSTEM 1
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#define PTHREAD_BARRIER_SERIAL_THREAD (-1)
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/* Register Fork Handlers */
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int pthread_atfork (void (*)(void), void (*)(void), void (*)(void));
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/* Attributes */
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int pthread_attr_destroy (pthread_attr_t *);
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int pthread_attr_getdetachstate (const pthread_attr_t *, int *);
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int pthread_attr_getguardsize (const pthread_attr_t *, size_t *);
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int pthread_attr_getinheritsched (const pthread_attr_t *, int *);
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int pthread_attr_getschedparam (const pthread_attr_t *, struct sched_param *);
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int pthread_attr_getschedpolicy (const pthread_attr_t *, int *);
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int pthread_attr_getscope (const pthread_attr_t *, int *);
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int pthread_attr_init (pthread_attr_t *);
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int pthread_attr_setdetachstate (pthread_attr_t *, int);
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int pthread_attr_setguardsize (pthread_attr_t *, size_t);
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int pthread_attr_setinheritsched (pthread_attr_t *, int);
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int pthread_attr_setschedparam (pthread_attr_t *, const struct sched_param *);
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int pthread_attr_setschedpolicy (pthread_attr_t *, int);
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int pthread_attr_setscope (pthread_attr_t *, int);
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#if __POSIX_VISIBLE >= 200112
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int pthread_attr_getstack (const pthread_attr_t *, void **, size_t *);
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int pthread_attr_setstack (pthread_attr_t *, void *, size_t);
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#endif
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#if __POSIX_VISIBLE < 200809
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int pthread_attr_getstackaddr (const pthread_attr_t *, void **)
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__attribute__ ((__deprecated__));
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int pthread_attr_setstackaddr (pthread_attr_t *, void *)
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__attribute__ ((__deprecated__));
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#endif
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int pthread_attr_getstacksize (const pthread_attr_t *, size_t *);
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int pthread_attr_setstacksize (pthread_attr_t *, size_t);
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int pthread_cancel (pthread_t);
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/* Macros for cleanup_push and pop;
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* The function definitions are
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void pthread_cleanup_push (void (*routine)(void*), void *arg);
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void pthread_cleanup_pop (int execute);
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*/
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typedef void (*__cleanup_routine_type) (void *);
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typedef struct _pthread_cleanup_handler
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{
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__cleanup_routine_type function;
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void *arg;
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struct _pthread_cleanup_handler *next;
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} __pthread_cleanup_handler;
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void _pthread_cleanup_push (__pthread_cleanup_handler *handler);
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void _pthread_cleanup_pop (int execute);
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#define pthread_cleanup_push(_fn, _arg) { __pthread_cleanup_handler __cleanup_handler = \
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{ _fn, _arg, NULL }; \
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_pthread_cleanup_push( &__cleanup_handler );
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#define pthread_cleanup_pop(_execute) _pthread_cleanup_pop( _execute ); }
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/* Condition variables */
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int pthread_cond_broadcast (pthread_cond_t *);
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int pthread_cond_destroy (pthread_cond_t *);
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int pthread_cond_init (pthread_cond_t *, const pthread_condattr_t *);
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int pthread_cond_signal (pthread_cond_t *);
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int pthread_cond_timedwait (pthread_cond_t *,
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pthread_mutex_t *, const struct timespec *);
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int pthread_cond_wait (pthread_cond_t *, pthread_mutex_t *);
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int pthread_condattr_destroy (pthread_condattr_t *);
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int pthread_condattr_getclock (const pthread_condattr_t *, clockid_t *);
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int pthread_condattr_getpshared (const pthread_condattr_t *, int *);
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int pthread_condattr_init (pthread_condattr_t *);
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int pthread_condattr_setclock (pthread_condattr_t *, clockid_t);
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int pthread_condattr_setpshared (pthread_condattr_t *, int);
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/* Barriers */
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#if __POSIX_VISIBLE >= 200112
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int pthread_barrierattr_init (pthread_barrierattr_t *);
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int pthread_barrierattr_setpshared (pthread_barrierattr_t *, int);
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int pthread_barrierattr_getpshared (const pthread_barrierattr_t *, int *);
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int pthread_barrierattr_destroy (pthread_barrierattr_t *);
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int pthread_barrier_init (pthread_barrier_t *,
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const pthread_barrierattr_t *, unsigned);
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int pthread_barrier_destroy (pthread_barrier_t *);
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int pthread_barrier_wait (pthread_barrier_t *);
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#endif
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/* Threads */
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int pthread_create (pthread_t *, const pthread_attr_t *,
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void *(*)(void *), void *);
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int pthread_detach (pthread_t);
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int pthread_equal (pthread_t, pthread_t);
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void pthread_exit (void *) __attribute__ ((__noreturn__));
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#if __POSIX_VISIBLE >= 200112
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int pthread_getcpuclockid (pthread_t, clockid_t *);
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#endif
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int pthread_getschedparam (pthread_t, int *, struct sched_param *);
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void *pthread_getspecific (pthread_key_t);
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int pthread_join (pthread_t, void **);
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int pthread_key_create (pthread_key_t *, void (*)(void *));
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int pthread_key_delete (pthread_key_t);
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/* Mutex's */
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int pthread_mutex_destroy (pthread_mutex_t *);
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int pthread_mutex_getprioceiling (const pthread_mutex_t *, int *);
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int pthread_mutex_init (pthread_mutex_t *, const pthread_mutexattr_t *);
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int pthread_mutex_lock (pthread_mutex_t *);
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int pthread_mutex_setprioceiling (pthread_mutex_t *, int, int *);
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int pthread_mutex_trylock (pthread_mutex_t *);
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int pthread_mutex_unlock (pthread_mutex_t *);
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int pthread_mutexattr_destroy (pthread_mutexattr_t *);
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int pthread_mutexattr_getprioceiling (const pthread_mutexattr_t *, int *);
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int pthread_mutexattr_getprotocol (const pthread_mutexattr_t *, int *);
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int pthread_mutexattr_getpshared (const pthread_mutexattr_t *, int *);
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int pthread_mutexattr_gettype (const pthread_mutexattr_t *, int *);
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int pthread_mutexattr_init (pthread_mutexattr_t *);
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int pthread_mutexattr_setprioceiling (pthread_mutexattr_t *, int);
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int pthread_mutexattr_setprotocol (pthread_mutexattr_t *, int);
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int pthread_mutexattr_setpshared (pthread_mutexattr_t *, int);
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int pthread_mutexattr_settype (pthread_mutexattr_t *, int);
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/* Spinlocks */
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#if __POSIX_VISIBLE >= 200112
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int pthread_spin_destroy (pthread_spinlock_t *);
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int pthread_spin_init (pthread_spinlock_t *, int);
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int pthread_spin_lock (pthread_spinlock_t *);
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int pthread_spin_trylock (pthread_spinlock_t *);
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int pthread_spin_unlock (pthread_spinlock_t *);
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#endif
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/* RW Locks */
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#if __XSI_VISIBLE >= 500 || __POSIX_VISIBLE >= 200112
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int pthread_rwlock_destroy (pthread_rwlock_t *rwlock);
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int pthread_rwlock_init (pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *attr);
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int pthread_rwlock_rdlock (pthread_rwlock_t *rwlock);
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int pthread_rwlock_tryrdlock (pthread_rwlock_t *rwlock);
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int pthread_rwlock_wrlock (pthread_rwlock_t *rwlock);
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int pthread_rwlock_trywrlock (pthread_rwlock_t *rwlock);
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int pthread_rwlock_unlock (pthread_rwlock_t *rwlock);
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int pthread_rwlockattr_init (pthread_rwlockattr_t *rwlockattr);
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int pthread_rwlockattr_getpshared (const pthread_rwlockattr_t *attr,
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int *pshared);
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int pthread_rwlockattr_setpshared (pthread_rwlockattr_t *attr, int pshared);
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int pthread_rwlockattr_destroy (pthread_rwlockattr_t *rwlockattr);
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#endif
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int pthread_once (pthread_once_t *, void (*)(void));
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#if __XSI_VISIBLE >= 500
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/* Concurrency levels - X/Open interface */
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int pthread_getconcurrency (void);
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int pthread_setconcurrency (int);
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#endif
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pthread_t pthread_self (void);
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int pthread_setcancelstate (int, int *);
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int pthread_setcanceltype (int, int *);
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int pthread_setschedparam (pthread_t, int, const struct sched_param *);
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int pthread_setschedprio (pthread_t, int);
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int pthread_setspecific (pthread_key_t, const void *);
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void pthread_testcancel (void);
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/* Non posix calls */
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#if __GNU_VISIBLE
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int pthread_getattr_np (pthread_t, pthread_attr_t *);
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int pthread_getname_np (pthread_t, char *, size_t) __attribute__((nonnull(2)));
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int pthread_setname_np (pthread_t, const char *) __attribute__((nonnull(2)));
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int pthread_sigqueue (pthread_t *, int, const union sigval);
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int pthread_yield (void);
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#endif
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#if __MISC_VISIBLE /* HP-UX, others? */
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int pthread_suspend (pthread_t);
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int pthread_continue (pthread_t);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _PTHREAD_H */
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