diff options
Diffstat (limited to 'attr.c')
| -rw-r--r-- | attr.c | 573 |
1 files changed, 42 insertions, 531 deletions
@@ -2,543 +2,54 @@ * attr.c * * Description: - * This translation unit implements operations on thread attribute objects. + * This translation unit agregates operations on thread attribute objects. + * It is used for inline optimisation. * - * Pthreads-win32 - POSIX Threads Library for Win32 - * Copyright (C) 1998 Ben Elliston and Ross Johnson - * Copyright (C) 1999,2000,2001 Ross Johnson + * The included modules are used separately when static executable sizes + * must be minimised. * - * Contact Email: rpj@ise.canberra.edu.au + * -------------------------------------------------------------------------- * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the Free - * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, - * MA 02111-1307, USA + * Pthreads-win32 - POSIX Threads Library for Win32 + * Copyright(C) 1998 John E. Bossom + * Copyright(C) 1999,2002 Pthreads-win32 contributors + * + * Contact Email: rpj@ise.canberra.edu.au + * + * The current list of contributors is contained + * in the file CONTRIBUTORS included with the source + * code distribution. The list can also be seen at the + * following World Wide Web location: + * http://sources.redhat.com/pthreads-win32/contributors.html + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library in the file COPYING.LIB; + * if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA */ -/* ignore warning "unreferenced formal parameter" */ -#ifdef _MSC_VER -#pragma warning( disable : 4100 ) -#endif - #include "pthread.h" #include "implement.h" -static INLINE int -is_attr(const pthread_attr_t *attr) -{ - /* Return 0 if the attr object is valid, non-zero otherwise. */ - - return (attr == NULL || - *attr == NULL || - (*attr)->valid != PTW32_ATTR_VALID); -} - - -int -pthread_attr_setstacksize(pthread_attr_t *attr, - size_t stacksize) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function specifies the size of the stack on - * which threads created with 'attr' will run. - * - * PARAMETERS - * attr - * pointer to an instance of pthread_attr_t - * - * stacksize - * stack size, in bytes. - * - * - * DESCRIPTION - * This function specifies the size of the stack on - * which threads created with 'attr' will run. - * - * NOTES: - * 1) Function supported only if this macro is - * defined: - * - * _POSIX_THREAD_ATTR_STACKSIZE - * - * 2) Find the default first (using - * pthread_attr_getstacksize), then increase - * by multiplying. - * - * 3) Only use if thread needs more than the - * default. - * - * RESULTS - * 0 successfully set stack size, - * EINVAL 'attr' is invalid or stacksize too - * small or too big. - * ENOSYS function not supported - * - * ------------------------------------------------------ - */ -{ -#ifdef _POSIX_THREAD_ATTR_STACKSIZE - -#if PTHREAD_STACK_MIN > 0 - - /* Verify that the stack size is within range. */ - if (stacksize < PTHREAD_STACK_MIN) - { - return EINVAL; - } - -#endif - - if (is_attr(attr) != 0) - { - return EINVAL; - } - - /* Everything is okay. */ - (*attr)->stacksize = stacksize; - return 0; - -#else - - return ENOSYS; - -#endif /* _POSIX_THREAD_ATTR_STACKSIZE */ - -} - -int -pthread_attr_getstacksize(const pthread_attr_t *attr, - size_t *stacksize) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function determines the size of the stack on - * which threads created with 'attr' will run. - * - * PARAMETERS - * attr - * pointer to an instance of pthread_attr_t - * - * stacksize - * pointer to size_t into which is returned the - * stack size, in bytes. - * - * - * DESCRIPTION - * This function determines the size of the stack on - * which threads created with 'attr' will run. - * - * NOTES: - * 1) Function supported only if this macro is - * defined: - * - * _POSIX_THREAD_ATTR_STACKSIZE - * - * 2) Use on newly created attributes object to - * find the default stack size. - * - * RESULTS - * 0 successfully retrieved stack size, - * EINVAL 'attr' is invalid - * ENOSYS function not supported - * - * ------------------------------------------------------ - */ -{ -#ifdef _POSIX_THREAD_ATTR_STACKSIZE - - if (is_attr(attr) != 0) - { - return EINVAL; - } - - /* Everything is okay. */ - *stacksize = (*attr)->stacksize; - return 0; - -#else - - return ENOSYS; - -#endif /* _POSIX_THREAD_ATTR_STACKSIZE */ - -} - - -int -pthread_attr_setstackaddr(pthread_attr_t *attr, - void *stackaddr) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * Threads created with 'attr' will run on the stack - * starting at 'stackaddr'. - * Stack must be at least PTHREAD_STACK_MIN bytes. - * - * PARAMETERS - * attr - * pointer to an instance of pthread_attr_t - * - * stacksize - * stack size, in bytes. - * - * - * DESCRIPTION - * Threads created with 'attr' will run on the stack - * starting at 'stackaddr'. - * Stack must be at least PTHREAD_STACK_MIN bytes. - * - * NOTES: - * 1) Function supported only if this macro is - * defined: - * - * _POSIX_THREAD_ATTR_STACKADDR - * - * 2) Create only one thread for each stack - * address.. - * - * 3) Ensure that stackaddr is aligned. - * - * RESULTS - * 0 successfully set stack address, - * EINVAL 'attr' is invalid - * ENOSYS function not supported - * - * ------------------------------------------------------ - */ -{ -#if defined( _POSIX_THREAD_ATTR_STACKADDR ) - - if (is_attr(attr) != 0) - { - return EINVAL; - } - - (*attr)->stackaddr = stackaddr; - return 0; - -#else - - return ENOSYS; - -#endif /* _POSIX_THREAD_ATTR_STACKADDR */ -} - -int -pthread_attr_getstackaddr(const pthread_attr_t *attr, - void **stackaddr) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function determines the address of the stack - * on which threads created with 'attr' will run. - * - * PARAMETERS - * attr - * pointer to an instance of pthread_attr_t - * - * stackaddr - * pointer into which is returned the stack address. - * - * - * DESCRIPTION - * This function determines the address of the stack - * on which threads created with 'attr' will run. - * - * NOTES: - * 1) Function supported only if this macro is - * defined: - * - * _POSIX_THREAD_ATTR_STACKADDR - * - * 2) Create only one thread for each stack - * address.. - * - * RESULTS - * 0 successfully retreived stack address, - * EINVAL 'attr' is invalid - * ENOSYS function not supported - * - * ------------------------------------------------------ - */ -{ -#if defined( _POSIX_THREAD_ATTR_STACKADDR ) - - if (is_attr(attr) != 0) - { - return EINVAL; - } - - *stackaddr = (*attr)->stackaddr; - return 0; - -#else - - return ENOSYS; - -#endif /* _POSIX_THREAD_ATTR_STACKADDR */ -} - - -int -pthread_attr_init(pthread_attr_t *attr) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * Initializes a thread attributes object with default - * attributes. - * - * PARAMETERS - * attr - * pointer to an instance of pthread_attr_t - * - * - * DESCRIPTION - * Initializes a thread attributes object with default - * attributes. - * - * NOTES: - * 1) Used to define thread attributes - * - * RESULTS - * 0 successfully initialized attr, - * ENOMEM insufficient memory for attr. - * - * ------------------------------------------------------ - */ -{ - pthread_attr_t attr_result; - - if (attr == NULL) - { - /* This is disallowed. */ - return EINVAL; - } - - attr_result = (pthread_attr_t) malloc (sizeof (*attr_result)); - - if (attr_result == NULL) - { - return ENOMEM; - } - -#ifdef _POSIX_THREAD_ATTR_STACKSIZE - /* - * Default to zero size. Unless changed explicitly this - * will allow Win32 to set the size to that of the - * main thread. - */ - attr_result->stacksize = 0; -#endif - -#ifdef _POSIX_THREAD_ATTR_STACKADDR - /* FIXME: Set this to something sensible when we support it. */ - attr_result->stackaddr = NULL; -#endif - - attr_result->detachstate = PTHREAD_CREATE_JOINABLE; - -#if HAVE_SIGSET_T - memset(&(attr_result->sigmask), 0, sizeof(sigset_t)); -#endif /* HAVE_SIGSET_T */ - - /* - * Win32 sets new threads to THREAD_PRIORITY_NORMAL and - * not to that of the parent thread. We choose to default to - * this arrangement. - */ - attr_result->param.sched_priority = THREAD_PRIORITY_NORMAL; - attr_result->inheritsched = PTHREAD_EXPLICIT_SCHED; - attr_result->contentionscope = PTHREAD_SCOPE_SYSTEM; - - attr_result->valid = PTW32_ATTR_VALID; - - *attr = attr_result; - - return 0; -} - -int -pthread_attr_destroy(pthread_attr_t *attr) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * Destroys a thread attributes object. - * - * PARAMETERS - * attr - * pointer to an instance of pthread_attr_t - * - * - * DESCRIPTION - * Destroys a thread attributes object. - * - * NOTES: - * 1) Does not affect threads created with 'attr'. - * - * RESULTS - * 0 successfully destroyed attr, - * EINVAL 'attr' is invalid. - * - * ------------------------------------------------------ - */ -{ - if (is_attr(attr) != 0) - { - return EINVAL; - } - - /* - * Set the attribute object to a specific invalid value. - */ - (*attr)->valid = 0; - free (*attr); - *attr = NULL; - - return 0; -} - -int -pthread_attr_getdetachstate(const pthread_attr_t *attr, - int *detachstate) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function determines whether threads created with - * 'attr' will run detached. - * - * PARAMETERS - * attr - * pointer to an instance of pthread_attr_t - * - * detachstate - * pointer to an integer into which is returned one - * of: - * - * PTHREAD_CREATE_JOINABLE - * Thread ID is valid, must be joined - * - * PTHREAD_CREATE_DETACHED - * Thread ID is invalid, cannot be joined, - * canceled, or modified - * - * - * DESCRIPTION - * This function determines whether threads created with - * 'attr' will run detached. - * - * NOTES: - * 1) You cannot join or cancel detached threads. - * - * RESULTS - * 0 successfully retrieved detach state, - * EINVAL 'attr' is invalid - * - * ------------------------------------------------------ - */ -{ - if (is_attr(attr) != 0 || detachstate == NULL) - { - *detachstate = PTHREAD_CREATE_DETACHED; - return EINVAL; - } - - *detachstate = (*attr)->detachstate; - return 0; -} - -int -pthread_attr_setdetachstate(pthread_attr_t *attr, - int detachstate) - /* - * ------------------------------------------------------ - * DOCPUBLIC - * This function specifies whether threads created with - * 'attr' will run detached. - * - * PARAMETERS - * attr - * pointer to an instance of pthread_attr_t - * - * detachstate - * an integer containing one of: - * - * PTHREAD_CREATE_JOINABLE - * Thread ID is valid, must be joined - * - * PTHREAD_CREATE_DETACHED - * Thread ID is invalid, cannot be joined, - * canceled, or modified - * - * - * DESCRIPTION - * This function specifies whether threads created with - * 'attr' will run detached. - * - * NOTES: - * 1) You cannot join or cancel detached threads. - * - * RESULTS - * 0 successfully set detach state, - * EINVAL 'attr' or 'detachstate' is invalid - * - * ------------------------------------------------------ - */ -{ - if (is_attr(attr) != 0) - { - return EINVAL; - } - - if (detachstate != PTHREAD_CREATE_JOINABLE && - detachstate != PTHREAD_CREATE_DETACHED) - { - return EINVAL; - } - - (*attr)->detachstate = detachstate; - return 0; -} - - -int -pthread_attr_setscope(pthread_attr_t *attr, int contentionscope) -{ -#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING - switch (contentionscope) { - case PTHREAD_SCOPE_SYSTEM: - (*attr)->contentionscope = contentionscope; - return 0; - case PTHREAD_SCOPE_PROCESS: - return ENOTSUP; - default: - return EINVAL; - } -#else - return ENOSYS; -#endif -} - - -int -pthread_attr_getscope(const pthread_attr_t *attr, int *contentionscope) -{ -#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING - *contentionscope = (*attr)->contentionscope; - return 0; -#else - return ENOSYS; -#endif -} +#include "attr_is_attr.c" +#include "attr_init.c" +#include "attr_destroy.c" +#include "attr_getdetachstate.c" +#include "attr_setdetachstate.c" +#include "attr_getstackaddr.c" +#include "attr_setstackaddr.c" +#include "attr_getstacksize.c" +#include "attr_setstacksize.c" +#include "attr_getscope.c" +#include "attr_setscope.c" |