Update.

2002-10-09  Ulrich Drepper  <drepper@redhat.com>

	* Versions.def (libc): Add GLIBC_2.3.1.
	(libpthread): Add GLIBC_2.3.1.

	* include/signal.h: Add libc_hidden_proto for __sigwait, __sigwaitinfo,
	and __sigtimedwait.
	* signal/Versions: Add __sigtimedwait, __sigwait, and __sigwaitinfo.
	* sysdeps/unix/sysv/linux/sigtimedwait.c (__sigtimedwait): Add
	libc_hidden_def.
	* sysdeps/unix/sysv/linux/sigwait.c (__sigwait): Likewise.
	* sysdeps/unix/sysv/linux/sigwaitinfo.c (__sigwaitinfo): Likewise.

	* include/sys/msg.h: Declare __libc_msgrcv and __libc_msgsnd.
	* sysdeps/unix/sysv/linux/msgrcv.c (__msgrcv): Rename to __libc_msgrcv
	and make old name an alias.
	* sysdeps/unix/sysv/linux/msgsnd.c (__msgsnd): Rename to __libc_msgsnd
	and make old name an alias.
	* sysvipc/Versions (libc) [GLIBC_PRIVATE]: Add __libc_msgrcv and
	__libc_msgsnd.

	* include/sys/uio.h: Declare __libc_readv and __libc_writev.
	* misc/Versions (libc) [GLIBC_PRIVATE]: Add __libc_readv and
	__libc_writev.
	* sysdeps/generic/readv.c (__readv): Rename to __libc_readv and make
	old name an alias.
	* sysdeps/posix/readv.c: Likewise
	* sysdeps/unix/sysv/aix/readv.c: Likewise.
	* sysdeps/unix/sysv/linux/readv.c: Likewise.
	* sysdeps/generic/writev.c (__writev): Rename to __libc_writev and make
	old name an alias.
	* sysdeps/posix/writev.c: Likewise
	* sysdeps/unix/sysv/aix/writev.c: Likewise.
	* sysdeps/unix/sysv/linux/writev.c: Likewise.

	* include/sys/wait.h: Declare __waitid.
	* posix/Versions (libc) [GLIBC_PRIVATE]: Add __waitid.
	* sysdeps/generic/waitid.c (waitid): Rename to __waitid and make old
	name an alias.
	* sysdeps/posix/waitid.c: Likewise.
	* sysdeps/unix/sysv/aix/waitid.c: Likewise.

	* sysdeps/unix/sysv/linux/syscalls.list: Add creat syscall.

2002-10-07  Jakub Jelinek  <jakub@redhat.com>

	* include/alloca.h (__libc_use_alloca, __libc_alloca_cutoff): New
	prototypes.
	(__MAX_ALLOCA_CUTOFF): Define.
	Include allocalim.h.
	* resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname2_r,
	_nss_dns_gethostbyaddr_r): Use alloca or malloc to allocate
	host_buffer depending on __libc_use_alloca.
	* resolv/nss_dns/dns-network.c (_nss_dns_getnetbyname_r,
	_nss_dns_getnetbyaddr_r): Use alloca or malloc to allocate
	net_buffer depending on __libc_use_alloca.
	* resolv/res_query.c (res_nquery): Use alloca or malloc to allocate
	buf depending on __libc_use_alloca.
	* resolv/gethnamaddr.c (gethostbyname2, gethostbyaddr): Likewise.
	* stdio-common/vfprintf.c (vfprintf): Use __libc_use_alloca
	instead of hardcoded constants.
	Pass proper size argument to alloca and compute end for wide char
	version.
	* stdio-common/printf_fp.c (__printf_fp): Use __libc_use_alloca
	instead of hardcoded constants.
	* string/strcoll.c (strcoll): Likewise.
	* string/strxfrm.c (strxfrm): Likewise.
	* sysdeps/posix/readv.c (__readv): Likewise.
	* sysdeps/posix/writev.c (__writev): Likewise.
	* sysdeps/generic/allocalim.h: New file.

7 files changed, 87 insertions, 110 deletions

diff --git a/linuxthreads/Versions b/linuxthreads/Versions
index ec4e8730b3..4e4c6cc55e 100644
--- a/linuxthreads/Versions
+++ b/linuxthreads/Versions
@@ -20,8 +20,7 @@ libc {
   GLIBC_PRIVATE {
     # Internal libc interface to libpthread
     __libc_internal_tsd_get; __libc_internal_tsd_set;
-    __libc_internal_tsd_address;
-
+    __libc_internal_tsd_address; __libc_alloca_cutoff;
   }
 }
 
@@ -163,7 +162,7 @@ libpthread {
   GLIBC_PRIVATE {
     # Internal libc interface to libpthread
     __libc_internal_tsd_get; __libc_internal_tsd_set;
-    __libc_internal_tsd_address;
+    __libc_internal_tsd_address; __libc_alloca_cutoff;
     __pthread_kill_other_threads_np;
   }
 }
diff --git a/linuxthreads/descr.h b/linuxthreads/descr.h
index cc64cbc8aa..1e14823d83 100644
--- a/linuxthreads/descr.h
+++ b/linuxthreads/descr.h
@@ -165,6 +165,8 @@ struct _pthread_descr_struct {
 #ifdef USE_TLS
   char *p_stackaddr;		/* Stack address.  */
 #endif
+  size_t p_alloca_cutoff;	/* Maximum size which should be allocated
+				   using alloca() instead of malloc().  */
   /* New elements must be added at the end.  */
 } __attribute__ ((aligned(32))); /* We need to align the structure so that
 				    doubles are aligned properly.  This is 8
diff --git a/linuxthreads/manager.c b/linuxthreads/manager.c
index 08bf467815..cb9c33ecfb 100644
--- a/linuxthreads/manager.c
+++ b/linuxthreads/manager.c
@@ -334,7 +334,8 @@ static int pthread_allocate_stack(const pthread_attr_t *attr,
                                   char ** out_new_thread,
                                   char ** out_new_thread_bottom,
                                   char ** out_guardaddr,
-                                  size_t * out_guardsize)
+                                  size_t * out_guardsize,
+                                  size_t * out_stacksize)
 {
   pthread_descr new_thread;
   char * new_thread_bottom;
@@ -388,6 +389,7 @@ static int pthread_allocate_stack(const pthread_attr_t *attr,
       /* Clear the thread data structure.  */
       memset (new_thread, '\0', sizeof (*new_thread));
 #endif
+      stacksize = attr->__stacksize;
     }
   else
     {
@@ -559,6 +561,11 @@ static int pthread_allocate_stack(const pthread_attr_t *attr,
   *out_new_thread_bottom = new_thread_bottom;
   *out_guardaddr = guardaddr;
   *out_guardsize = guardsize;
+#ifdef NEED_SEPARATE_REGISTER_STACK
+  *out_stacksize = stacksize / 2;
+#else
+  *out_stacksize = stacksize;
+#endif
   return 0;
 }
 
@@ -575,7 +582,7 @@ static int pthread_handle_create(pthread_t *thread, const pthread_attr_t *attr,
   char * new_thread_bottom;
   pthread_t new_thread_id;
   char *guardaddr = NULL;
-  size_t guardsize = 0;
+  size_t guardsize = 0, stksize = 0;
   int pagesize = __getpagesize();
   int saved_errno = 0;
 
@@ -608,7 +615,7 @@ static int pthread_handle_create(pthread_t *thread, const pthread_attr_t *attr,
 	continue;
       if (pthread_allocate_stack(attr, thread_segment(sseg),
 				 pagesize, &stack_addr, &new_thread_bottom,
-                                 &guardaddr, &guardsize) == 0)
+                                 &guardaddr, &guardsize, &stksize) == 0)
 	{
 #ifdef USE_TLS
 	  new_thread->p_stackaddr = stack_addr;
@@ -639,6 +646,8 @@ static int pthread_handle_create(pthread_t *thread, const pthread_attr_t *attr,
   new_thread->p_guardsize = guardsize;
   new_thread->p_nr = sseg;
   new_thread->p_inheritsched = attr ? attr->__inheritsched : 0;
+  new_thread->p_alloca_cutoff = stksize / 4 > __MAX_ALLOCA_CUTOFF
+				 ? __MAX_ALLOCA_CUTOFF : stksize / 4;
   /* Initialize the thread handle */
   __pthread_init_lock(&__pthread_handles[sseg].h_lock);
   __pthread_handles[sseg].h_descr = new_thread;
diff --git a/linuxthreads/no-tsd.c b/linuxthreads/no-tsd.c
index 099e7b49ae..de6c2945aa 100644
--- a/linuxthreads/no-tsd.c
+++ b/linuxthreads/no-tsd.c
@@ -38,3 +38,8 @@ void **(*__libc_internal_tsd_address) (enum __libc_tsd_key_t)
      __THROW __attribute__ ((__const__));
 
 #endif /* !(USE_TLS && HAVE___THREAD) */
+
+int __libc_alloca_cutoff (size_t size)
+{
+  return size <= __MAX_ALLOCA_CUTOFF;
+}
diff --git a/linuxthreads/pthread.c b/linuxthreads/pthread.c
index 9281a414c9..e2042bdb74 100644
--- a/linuxthreads/pthread.c
+++ b/linuxthreads/pthread.c
@@ -63,58 +63,20 @@ static pthread_descr manager_thread;
 /* Descriptor of the initial thread */
 
 struct _pthread_descr_struct __pthread_initial_thread = {
-  {
-    {
-      .self = &__pthread_initial_thread /* pthread_descr self */
-    }
-  },
-  &__pthread_initial_thread,  /* pthread_descr p_nextlive */
-  &__pthread_initial_thread,  /* pthread_descr p_prevlive */
-  NULL,                       /* pthread_descr p_nextwaiting */
-  NULL,			      /* pthread_descr p_nextlock */
-  PTHREAD_THREADS_MAX,        /* pthread_t p_tid */
-  0,                          /* int p_pid */
-  0,                          /* int p_priority */
-  &__pthread_handles[0].h_lock, /* struct _pthread_fastlock * p_lock */
-  0,                          /* int p_signal */
-  NULL,                       /* sigjmp_buf * p_signal_buf */
-  NULL,                       /* sigjmp_buf * p_cancel_buf */
-  0,                          /* char p_terminated */
-  0,                          /* char p_detached */
-  0,                          /* char p_exited */
-  NULL,                       /* void * p_retval */
-  0,                          /* int p_retval */
-  NULL,                       /* pthread_descr p_joining */
-  NULL,                       /* struct _pthread_cleanup_buffer * p_cleanup */
-  0,                          /* char p_cancelstate */
-  0,                          /* char p_canceltype */
-  0,                          /* char p_canceled */
-  NULL,                       /* char * p_in_sighandler */
-  0,                          /* char p_sigwaiting */
-  PTHREAD_START_ARGS_INITIALIZER(NULL),
-                              /* struct pthread_start_args p_start_args */
-  {NULL},                     /* void ** p_specific[PTHREAD_KEY_1STLEVEL_SIZE] */
-  {NULL},                     /* void * p_libc_specific[_LIBC_TSD_KEY_N] */
-  &_errno,                    /* int *p_errnop */
-  0,                          /* int p_errno */
-  &_h_errno,                  /* int *p_h_errnop */
-  0,                          /* int p_h_errno */
-  &_res,		      /* struct __res_state *p_resp */
-  {},			      /* struct __res_state p_res */
-  1,                          /* int p_userstack */
-  NULL,                       /* void * p_guardaddr */
-  0,                          /* size_t p_guardsize */
-  0,                          /* Always index 0 */
-  0,                          /* int p_report_events */
-  {{{0, }}, 0, NULL},         /* td_eventbuf_t p_eventbuf */
-  __ATOMIC_INITIALIZER,       /* struct pthread_atomic p_resume_count */
-  0,                          /* char p_woken_by_cancel */
-  0,                          /* char p_condvar_avail */
-  0,                          /* char p_sem_avail */
-  NULL,                       /* struct pthread_extricate_if *p_extricate */
-  NULL,	                      /* pthread_readlock_info *p_readlock_list; */
-  NULL,                       /* pthread_readlock_info *p_readlock_free; */
-  0                           /* int p_untracked_readlock_count; */
+  .p_header.data.self = &__pthread_initial_thread,
+  .p_nextlive = &__pthread_initial_thread,
+  .p_prevlive = &__pthread_initial_thread,
+  .p_tid = PTHREAD_THREADS_MAX,
+  .p_lock = &__pthread_handles[0].h_lock,
+  .p_start_args = PTHREAD_START_ARGS_INITIALIZER(NULL),
+#if !(USE_TLS && HAVE___THREAD)
+  .p_errnop = &_errno,
+  .p_h_errnop = &_h_errno,
+  .p_resp = &_res,
+#endif
+  .p_userstack = 1,
+  .p_resume_count = __ATOMIC_INITIALIZER,
+  .p_alloca_cutoff = __MAX_ALLOCA_CUTOFF
 };
 
 /* Descriptor of the manager thread; none of this is used but the error
@@ -123,58 +85,15 @@ struct _pthread_descr_struct __pthread_initial_thread = {
 
 #define manager_thread (&__pthread_manager_thread)
 struct _pthread_descr_struct __pthread_manager_thread = {
-  {
-    {
-      .self = &__pthread_manager_thread /* pthread_descr self */
-    }
-  },
-  NULL,                       /* pthread_descr p_nextlive */
-  NULL,                       /* pthread_descr p_prevlive */
-  NULL,                       /* pthread_descr p_nextwaiting */
-  NULL,			      /* pthread_descr p_nextlock */
-  0,                          /* int p_tid */
-  0,                          /* int p_pid */
-  0,                          /* int p_priority */
-  &__pthread_handles[1].h_lock, /* struct _pthread_fastlock * p_lock */
-  0,                          /* int p_signal */
-  NULL,                       /* sigjmp_buf * p_signal_buf */
-  NULL,                       /* sigjmp_buf * p_cancel_buf */
-  0,                          /* char p_terminated */
-  0,                          /* char p_detached */
-  0,                          /* char p_exited */
-  NULL,                       /* void * p_retval */
-  0,                          /* int p_retval */
-  NULL,                       /* pthread_descr p_joining */
-  NULL,                       /* struct _pthread_cleanup_buffer * p_cleanup */
-  0,                          /* char p_cancelstate */
-  0,                          /* char p_canceltype */
-  0,                          /* char p_canceled */
-  NULL,                       /* char * p_in_sighandler */
-  0,                          /* char p_sigwaiting */
-  PTHREAD_START_ARGS_INITIALIZER(__pthread_manager),
-                              /* struct pthread_start_args p_start_args */
-  {NULL},                     /* void ** p_specific[PTHREAD_KEY_1STLEVEL_SIZE] */
-  {NULL},                     /* void * p_libc_specific[_LIBC_TSD_KEY_N] */
-  &__pthread_manager_thread.p_errno, /* int *p_errnop */
-  0,                          /* int p_errno */
-  NULL,                       /* int *p_h_errnop */
-  0,                          /* int p_h_errno */
-  NULL,			      /* struct __res_state *p_resp */
-  {},			      /* struct __res_state p_res */
-  0,                          /* int p_userstack */
-  NULL,                       /* void * p_guardaddr */
-  0,                          /* size_t p_guardsize */
-  1,                          /* Always index 1 */
-  0,                          /* int p_report_events */
-  {{{0, }}, 0, NULL},         /* td_eventbuf_t p_eventbuf */
-  __ATOMIC_INITIALIZER,       /* struct pthread_atomic p_resume_count */
-  0,                          /* char p_woken_by_cancel */
-  0,                          /* char p_condvar_avail */
-  0,                          /* char p_sem_avail */
-  NULL,                       /* struct pthread_extricate_if *p_extricate */
-  NULL,	                      /* pthread_readlock_info *p_readlock_list; */
-  NULL,                       /* pthread_readlock_info *p_readlock_free; */
-  0                           /* int p_untracked_readlock_count; */
+  .p_header.data.self = &__pthread_manager_thread,
+  .p_lock = &__pthread_handles[1].h_lock,
+  .p_start_args = PTHREAD_START_ARGS_INITIALIZER(__pthread_manager),
+#if !(USE_TLS && HAVE___THREAD)
+  .p_errnop = &__pthread_manager_thread.p_errno,
+#endif
+  .p_nr = 1,
+  .p_resume_count = __ATOMIC_INITIALIZER,
+  .p_alloca_cutoff = PTHREAD_STACK_MIN / 4
 };
 #endif
 
@@ -418,6 +337,7 @@ __pthread_initialize_minimal(void)
 # if __LT_SPINLOCK_INIT != 0
   self->p_resume_count = (struct pthread_atomic) __ATOMIC_INITIALIZER;
 # endif
+  self->p_alloca_cutoff = __MAX_ALLOCA_CUTOFF;
 
   /* Another variable which points to the thread descriptor.  */
   __pthread_main_thread = self;
@@ -487,6 +407,15 @@ __pthread_init_max_stacksize(void)
   }
 #endif
   __pthread_max_stacksize = max_stack;
+  if (max_stack / 4 < __MAX_ALLOCA_CUTOFF)
+    {
+#ifdef USE_TLS
+      pthread_descr self = THREAD_SELF;
+      self->p_alloca_cutoff = max_stack / 4;
+#else
+      __pthread_initial_thread.p_alloca_cutoff = max_stack / 4;
+#endif
+    }
 }
 
 
@@ -629,6 +558,7 @@ int __pthread_initialize_manager(void)
 # if __LT_SPINLOCK_INIT != 0
   self->p_resume_count = (struct pthread_atomic) __ATOMIC_INITIALIZER;
 # endif
+  tcb->p_alloca_cutoff = PTHREAD_STACK_MIN / 4;
 #else
   tcb = &__pthread_manager_thread;
 #endif
diff --git a/linuxthreads/specific.c b/linuxthreads/specific.c
index c5d742d978..17e62e82b7 100644
--- a/linuxthreads/specific.c
+++ b/linuxthreads/specific.c
@@ -239,3 +239,9 @@ void **(*const __libc_internal_tsd_address) (enum __libc_tsd_key_t key)
      __THROW __attribute__ ((__const__)) = libc_internal_tsd_address;
 
 #endif
+
+int __libc_alloca_cutoff (size_t size)
+{
+  pthread_descr self = thread_self();
+  return size <= THREAD_GETMEM_NC(self, p_alloca_cutoff);
+}
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/allocalim.h b/linuxthreads/sysdeps/unix/sysv/linux/allocalim.h
new file mode 100644
index 0000000000..f62f7d6e9f
--- /dev/null
+++ b/linuxthreads/sysdeps/unix/sysv/linux/allocalim.h
@@ -0,0 +1,26 @@
+/* Determine whether block of given size can be allocated on the stack or not.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C 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.
+
+   The GNU C 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 the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <limits.h>
+
+extern inline int __libc_use_alloca (size_t size)
+{
+  return (__builtin_expect (size <= PTHREAD_STACK_MIN / 4, 1)
+	  || __libc_alloca_cutoff (size));
+}