diff options
Diffstat (limited to 'libpthread/linuxthreads/attr.c')
| -rw-r--r-- | libpthread/linuxthreads/attr.c | 367 |
1 files changed, 31 insertions, 336 deletions
diff --git a/libpthread/linuxthreads/attr.c b/libpthread/linuxthreads/attr.c index c84da0d30..4432a04d1 100644 --- a/libpthread/linuxthreads/attr.c +++ b/libpthread/linuxthreads/attr.c @@ -12,50 +12,27 @@ /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ /* GNU Library General Public License for more details. */ -/* Handling of thread attributes */ - -/* mods for uClibc */ -#define __getpagesize getpagesize +/* changed for uClibc */ #define __sched_get_priority_min sched_get_priority_min #define __sched_get_priority_max sched_get_priority_max -#define __sched_getscheduler sched_getscheduler -#define __sched_getparam sched_getparam -#include <features.h> -#define __USE_GNU +/* Handling of thread attributes */ + #include <errno.h> -#include <inttypes.h> -#include <stdio.h> -#include <stdio_ext.h> -#include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/param.h> -#include <sys/resource.h> #include "pthread.h" #include "internals.h" -/* glibc uses strong aliases, we wont bother */ -#undef strong_alias -#define strong_alias(sym, alias) -#define __pthread_attr_destroy pthread_attr_destroy -#define __pthread_attr_setdetachstate pthread_attr_setdetachstate -#define __pthread_attr_getdetachstate pthread_attr_getdetachstate -#define __pthread_attr_setschedparam pthread_attr_setschedparam -#define __pthread_attr_getschedparam pthread_attr_getschedparam -#define __pthread_attr_setschedpolicy pthread_attr_setschedpolicy -#define __pthread_attr_getschedpolicy pthread_attr_getschedpolicy -#define __pthread_attr_setinheritsched pthread_attr_setinheritsched -#define __pthread_attr_getinheritsched pthread_attr_getinheritsched -#define __pthread_attr_setscope pthread_attr_setscope -#define __pthread_attr_getscope pthread_attr_getscope +extern int __getpagesize(void); /* NOTE: With uClibc I don't think we need this versioning stuff. * Therefore, define the function pthread_attr_init() here using * a strong symbol. */ -#define __pthread_attr_init_2_1 pthread_attr_init -int __pthread_attr_init_2_1(pthread_attr_t *attr) +//int __pthread_attr_init_2_1(pthread_attr_t *attr) +int pthread_attr_init(pthread_attr_t *attr) { size_t ps = __getpagesize (); @@ -64,11 +41,7 @@ int __pthread_attr_init_2_1(pthread_attr_t *attr) attr->__schedparam.sched_priority = 0; attr->__inheritsched = PTHREAD_EXPLICIT_SCHED; attr->__scope = PTHREAD_SCOPE_SYSTEM; -#ifdef NEED_SEPARATE_REGISTER_STACK - attr->__guardsize = ps + ps; -#else attr->__guardsize = ps; -#endif attr->__stackaddr = NULL; attr->__stackaddr_set = 0; attr->__stacksize = STACK_SIZE - ps; @@ -76,11 +49,10 @@ int __pthread_attr_init_2_1(pthread_attr_t *attr) } /* uClibc: leave out this for now. */ -#if 0 -versioned_symbol (libpthread, __pthread_attr_init_2_1, pthread_attr_init, - GLIBC_2_1); +#if DO_PTHREAD_VERSIONING_WITH_UCLIBC +#if defined __HAVE_ELF__ && defined __PIC__ && defined DO_VERSIONING +default_symbol_version (__pthread_attr_init_2_1, pthread_attr_init, GLIBC_2.1); -#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1) int __pthread_attr_init_2_0(pthread_attr_t *attr) { attr->__detachstate = PTHREAD_CREATE_JOINABLE; @@ -90,18 +62,18 @@ int __pthread_attr_init_2_0(pthread_attr_t *attr) attr->__scope = PTHREAD_SCOPE_SYSTEM; return 0; } -compat_symbol (libpthread, __pthread_attr_init_2_0, pthread_attr_init, - GLIBC_2_0); -#endif +symbol_version (__pthread_attr_init_2_0, pthread_attr_init, GLIBC_2.0); +#else +strong_alias (__pthread_attr_init_2_1, pthread_attr_init) #endif +#endif /* DO_PTHREAD_VERSIONING_WITH_UCLIBC */ -int __pthread_attr_destroy(pthread_attr_t *attr) +int pthread_attr_destroy(pthread_attr_t *attr) { return 0; } -strong_alias (__pthread_attr_destroy, pthread_attr_destroy); -int __pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate) +int pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate) { if (detachstate < PTHREAD_CREATE_JOINABLE || detachstate > PTHREAD_CREATE_DETACHED) @@ -109,17 +81,15 @@ int __pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate) attr->__detachstate = detachstate; return 0; } -strong_alias (__pthread_attr_setdetachstate, pthread_attr_setdetachstate); -int __pthread_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate) +int pthread_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate) { *detachstate = attr->__detachstate; return 0; } -strong_alias (__pthread_attr_getdetachstate, pthread_attr_getdetachstate); -int __pthread_attr_setschedparam(pthread_attr_t *attr, - const struct sched_param *param) +int pthread_attr_setschedparam(pthread_attr_t *attr, + const struct sched_param *param) { int max_prio = __sched_get_priority_max(attr->__schedpolicy); int min_prio = __sched_get_priority_min(attr->__schedpolicy); @@ -129,49 +99,43 @@ int __pthread_attr_setschedparam(pthread_attr_t *attr, memcpy (&attr->__schedparam, param, sizeof (struct sched_param)); return 0; } -strong_alias (__pthread_attr_setschedparam, pthread_attr_setschedparam); -int __pthread_attr_getschedparam(const pthread_attr_t *attr, - struct sched_param *param) +int pthread_attr_getschedparam(const pthread_attr_t *attr, + struct sched_param *param) { memcpy (param, &attr->__schedparam, sizeof (struct sched_param)); return 0; } -strong_alias (__pthread_attr_getschedparam, pthread_attr_getschedparam); -int __pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy) +int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy) { if (policy != SCHED_OTHER && policy != SCHED_FIFO && policy != SCHED_RR) return EINVAL; attr->__schedpolicy = policy; return 0; } -strong_alias (__pthread_attr_setschedpolicy, pthread_attr_setschedpolicy); -int __pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy) +int pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy) { *policy = attr->__schedpolicy; return 0; } -strong_alias (__pthread_attr_getschedpolicy, pthread_attr_getschedpolicy); -int __pthread_attr_setinheritsched(pthread_attr_t *attr, int inherit) +int pthread_attr_setinheritsched(pthread_attr_t *attr, int inherit) { if (inherit != PTHREAD_INHERIT_SCHED && inherit != PTHREAD_EXPLICIT_SCHED) return EINVAL; attr->__inheritsched = inherit; return 0; } -strong_alias (__pthread_attr_setinheritsched, pthread_attr_setinheritsched); -int __pthread_attr_getinheritsched(const pthread_attr_t *attr, int *inherit) +int pthread_attr_getinheritsched(const pthread_attr_t *attr, int *inherit) { *inherit = attr->__inheritsched; return 0; } -strong_alias (__pthread_attr_getinheritsched, pthread_attr_getinheritsched); -int __pthread_attr_setscope(pthread_attr_t *attr, int scope) +int pthread_attr_setscope(pthread_attr_t *attr, int scope) { switch (scope) { case PTHREAD_SCOPE_SYSTEM: @@ -183,17 +147,20 @@ int __pthread_attr_setscope(pthread_attr_t *attr, int scope) return EINVAL; } } -strong_alias (__pthread_attr_setscope, pthread_attr_setscope); -int __pthread_attr_getscope(const pthread_attr_t *attr, int *scope) +int pthread_attr_getscope(const pthread_attr_t *attr, int *scope) { *scope = attr->__scope; return 0; } -strong_alias (__pthread_attr_getscope, pthread_attr_getscope); int __pthread_attr_setguardsize(pthread_attr_t *attr, size_t guardsize) { + size_t ps = __getpagesize (); + + /* First round up the guard size. */ + guardsize = roundup (guardsize, ps); + /* The guard size must not be larger than the stack itself */ if (guardsize >= attr->__stacksize) return EINVAL; @@ -218,9 +185,6 @@ int __pthread_attr_setstackaddr(pthread_attr_t *attr, void *stackaddr) } weak_alias (__pthread_attr_setstackaddr, pthread_attr_setstackaddr) -link_warning (pthread_attr_setstackaddr, - "the use of `pthread_attr_setstackaddr' is deprecated, use `pthread_attr_setstack'") - int __pthread_attr_getstackaddr(const pthread_attr_t *attr, void **stackaddr) { /* XXX This function has a stupid definition. The standard specifies @@ -231,27 +195,8 @@ int __pthread_attr_getstackaddr(const pthread_attr_t *attr, void **stackaddr) } weak_alias (__pthread_attr_getstackaddr, pthread_attr_getstackaddr) -link_warning (pthread_attr_getstackaddr, - "the use of `pthread_attr_getstackaddr' is deprecated, use `pthread_attr_getstack'") - - int __pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize) { -#ifdef FLOATING_STACKS - /* We have to check against the maximum allowed stack size. This is no - problem if the manager is already started and we determined it. If - this hasn't happened, we have to find the limit outself. */ - if (__pthread_max_stacksize == 0) - __pthread_init_max_stacksize (); - - if (stacksize > __pthread_max_stacksize) - return EINVAL; -#else - /* We have a fixed size limit. */ - if (stacksize > STACK_SIZE) - return EINVAL; -#endif - /* We don't accept value smaller than PTHREAD_STACK_MIN. */ if (stacksize < PTHREAD_STACK_MIN) return EINVAL; @@ -259,45 +204,7 @@ int __pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize) attr->__stacksize = stacksize; return 0; } - -/* Don't bother with this version stuff in uClibc */ -#if 1 /*PTHREAD_STACK_MIN == 16384*/ weak_alias (__pthread_attr_setstacksize, pthread_attr_setstacksize) -#else -versioned_symbol (libpthread, __pthread_attr_setstacksize, - pthread_attr_setstacksize, GLIBC_2_3_3); - -# if SHLIB_COMPAT(libpthread, GLIBC_2_1, GLIBC_2_3_3) - -int __old_pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize) -{ -# ifdef FLOATING_STACKS - /* We have to check against the maximum allowed stack size. This is no - problem if the manager is already started and we determined it. If - this hasn't happened, we have to find the limit outself. */ - if (__pthread_max_stacksize == 0) - __pthread_init_max_stacksize (); - - if (stacksize > __pthread_max_stacksize) - return EINVAL; -# else - /* We have a fixed size limit. */ - if (stacksize > STACK_SIZE) - return EINVAL; -# endif - - /* We don't accept value smaller than old PTHREAD_STACK_MIN. */ - if (stacksize < 16384) - return EINVAL; - - attr->__stacksize = stacksize; - return 0; -} -compat_symbol (libpthread, __old_pthread_attr_setstacksize, - pthread_attr_setstacksize, GLIBC_2_1); -# endif -#endif - int __pthread_attr_getstacksize(const pthread_attr_t *attr, size_t *stacksize) { @@ -305,215 +212,3 @@ int __pthread_attr_getstacksize(const pthread_attr_t *attr, size_t *stacksize) return 0; } weak_alias (__pthread_attr_getstacksize, pthread_attr_getstacksize) - -int __pthread_attr_setstack (pthread_attr_t *attr, void *stackaddr, - size_t stacksize) -{ - int err; - - if ((((uintptr_t) stackaddr) - & (__alignof__ (struct _pthread_descr_struct) - 1)) != 0) - err = EINVAL; - else - err = __pthread_attr_setstacksize (attr, stacksize); - if (err == 0) - { -#ifndef _STACK_GROWS_UP - attr->__stackaddr = (char *) stackaddr + stacksize; -#else - attr->__stackaddr = stackaddr; -#endif - attr->__stackaddr_set = 1; - } - - return err; -} - -/* Don't bother with this version stuff in uClibc */ -#if 1 /*PTHREAD_STACK_MIN == 16384*/ -weak_alias (__pthread_attr_setstack, pthread_attr_setstack) -#else -versioned_symbol (libpthread, __pthread_attr_setstack, pthread_attr_setstack, - GLIBC_2_3_3); -# if SHLIB_COMPAT(libpthread, GLIBC_2_2, GLIBC_2_3_3) -int __old_pthread_attr_setstack (pthread_attr_t *attr, void *stackaddr, - size_t stacksize) -{ - int err; - - if ((((uintptr_t) stackaddr) - & (__alignof__ (struct _pthread_descr_struct) - 1)) != 0) - err = EINVAL; - else - err = __old_pthread_attr_setstacksize (attr, stacksize); - if (err == 0) - { -# ifndef _STACK_GROWS_UP - attr->__stackaddr = (char *) stackaddr + stacksize; -# else - attr->__stackaddr = stackaddr; -# endif - attr->__stackaddr_set = 1; - } - - return err; -} - -compat_symbol (libpthread, __old_pthread_attr_setstack, pthread_attr_setstack, - GLIBC_2_2); - -# endif -#endif - -int __pthread_attr_getstack (const pthread_attr_t *attr, void **stackaddr, - size_t *stacksize) -{ - /* XXX This function has a stupid definition. The standard specifies - no error value but what is if no stack address was set? We simply - return the value we have in the member. */ -#ifndef _STACK_GROWS_UP - *stackaddr = (char *) attr->__stackaddr - attr->__stacksize; -#else - *stackaddr = attr->__stackaddr; -#endif - *stacksize = attr->__stacksize; - return 0; -} -weak_alias (__pthread_attr_getstack, pthread_attr_getstack) - -/* can't fully support this just yet */ -#if 0 -int pthread_getattr_np (pthread_t thread, pthread_attr_t *attr) -{ - pthread_handle handle = thread_handle (thread); - pthread_descr descr; - int ret = 0; - - if (handle == NULL) - return ENOENT; - - descr = handle->h_descr; - - attr->__detachstate = (descr->p_detached - ? PTHREAD_CREATE_DETACHED - : PTHREAD_CREATE_JOINABLE); - - attr->__schedpolicy = __sched_getscheduler (descr->p_pid); - if (attr->__schedpolicy == -1) - return errno; - - if (__sched_getparam (descr->p_pid, - (struct sched_param *) &attr->__schedparam) != 0) - return errno; - - attr->__inheritsched = descr->p_inheritsched; - attr->__scope = PTHREAD_SCOPE_SYSTEM; - -#ifdef _STACK_GROWS_DOWN -# ifdef USE_TLS - attr->__stacksize = descr->p_stackaddr - (char *)descr->p_guardaddr - - descr->p_guardsize; -# else - attr->__stacksize = (char *)(descr + 1) - (char *)descr->p_guardaddr - - descr->p_guardsize; -# endif -#else -# ifdef USE_TLS - attr->__stacksize = (char *)descr->p_guardaddr - descr->p_stackaddr; -# else - attr->__stacksize = (char *)descr->p_guardaddr - (char *)descr; -# endif -#endif - attr->__guardsize = descr->p_guardsize; - attr->__stackaddr_set = descr->p_userstack; -#ifdef NEED_SEPARATE_REGISTER_STACK - if (descr->p_userstack == 0) - attr->__stacksize *= 2; - /* XXX This is awkward. The guard pages are in the middle of the - two stacks. We must count the guard size in the stack size since - otherwise the range of the stack area cannot be computed. */ - attr->__stacksize += attr->__guardsize; -#endif -#ifdef USE_TLS - attr->__stackaddr = descr->p_stackaddr; -#else -# ifndef _STACK_GROWS_UP - attr->__stackaddr = (char *)(descr + 1); -# else - attr->__stackaddr = (char *)descr; -# endif -#endif - -#ifdef USE_TLS - if (attr->__stackaddr == NULL) -#else - if (descr == &__pthread_initial_thread) -#endif - { - /* Stack size limit. */ - struct rlimit rl; - - /* The safest way to get the top of the stack is to read - /proc/self/maps and locate the line into which - __libc_stack_end falls. */ - FILE *fp = fopen ("/proc/self/maps", "rc"); - if (fp == NULL) - ret = errno; - /* We need the limit of the stack in any case. */ - else if (getrlimit (RLIMIT_STACK, &rl) != 0) - ret = errno; - else - { - /* We need no locking. */ - __fsetlocking (fp, FSETLOCKING_BYCALLER); - - /* Until we found an entry (which should always be the case) - mark the result as a failure. */ - ret = ENOENT; - - char *line = NULL; - size_t linelen = 0; - uintptr_t last_to = 0; - - while (! feof_unlocked (fp)) - { - if (__getdelim (&line, &linelen, '\n', fp) <= 0) - break; - - uintptr_t from; - uintptr_t to; - if (sscanf (line, "%" SCNxPTR "-%" SCNxPTR, &from, &to) != 2) - continue; - if (from <= (uintptr_t) __libc_stack_end - && (uintptr_t) __libc_stack_end < to) - { - /* Found the entry. Now we have the info we need. */ - attr->__stacksize = rl.rlim_cur; -#ifdef _STACK_GROWS_UP - /* Don't check to enforce a limit on the __stacksize */ - attr->__stackaddr = (void *) from; -#else - attr->__stackaddr = (void *) to; - - /* The limit might be too high. */ - if ((size_t) attr->__stacksize - > (size_t) attr->__stackaddr - last_to) - attr->__stacksize = (size_t) attr->__stackaddr - last_to; -#endif - - /* We succeed and no need to look further. */ - ret = 0; - break; - } - last_to = to; - } - - fclose (fp); - free (line); - } - } - - return 0; - -} -#endif |