[parisc-linux] [PATCH] hppa machine-malloc.h

[Carlos O'Donell]

libc-alpha,

Machine specific hppa malloc locking functions.

Thanks to Wolfram for making the required changes, and reminding me to
submit my patches ;)

Cheers,
Carlos.
===
 linuxthreads/sysdeps/unix/sysv/linux/hppa/malloc-machine.h |   73 ++++++++++
 1 files changed, 73 insertions(+)
===

2003-10-10  Carlos O'Donell  <carlos@baldric.uwo.ca>

	* linuxthreads/sysdeps/unix/sysv/linux/hppa/malloc-machine.h: New.

--- libc/linuxthreads/sysdeps/unix/sysv/linux/hppa/malloc-machine.h.orig	1969-12-31 19:00:00.000000000 -0500
+++ libc/linuxthreads/sysdeps/unix/sysv/linux/hppa/malloc-machine.h	2003-10-04 12:52:09.000000000 -0400
@@ -0,0 +1,73 @@
+/* HP-PARISC macro definitions for mutexes, thread-specific data 
+   and parameters for malloc.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Carlos O'Donell <carlos@baldric.uwo.ca>, 2003.
+   
+   The GNU C 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 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _MALLOC_MACHINE_H
+#define _MALLOC_MACHINE_H
+
+#undef thread_atfork_static
+
+#include <atomic.h>
+#include <bits/libc-lock.h>
+
+__libc_lock_define (typedef, mutex_t)
+
+/* Since our lock structure does not tolerate being initialized to zero, we must
+   modify the standard function calls made by malloc */
+#  define mutex_init(m)		\
+	__libc_maybe_call (__pthread_mutex_init, (m, NULL), \
+		(((m)->__m_lock.__spinlock = __LT_SPINLOCK_INIT),(*(int *)(m))) )
+#  define mutex_lock(m)		\
+	__libc_maybe_call (__pthread_mutex_lock, (m), \
+			(__load_and_clear(&((m)->__m_lock.__spinlock)), 0))
+#  define mutex_trylock(m)	\
+	__libc_maybe_call (__pthread_mutex_trylock, (m), \
+			(*(int *)(m) ? 1 : (__load_and_clear(&((m)->__m_lock.__spinlock)), 0)))
+#  define mutex_unlock(m)	\
+	__libc_maybe_call (__pthread_mutex_unlock, (m), \
+			(((m)->__m_lock.__spinlock = __LT_SPINLOCK_INIT), (*(int *)(m))) )
+	
+/* This is defined by newer gcc version unique for each module.  */
+extern void *__dso_handle __attribute__ ((__weak__));
+
+#include <fork.h>
+
+#ifdef SHARED
+# define thread_atfork(prepare, parent, child) \
+   __register_atfork (prepare, parent, child, __dso_handle)
+#else
+# define thread_atfork(prepare, parent, child) \
+   __register_atfork (prepare, parent, child,				      \
+		      &__dso_handle == NULL ? NULL : __dso_handle)
+#endif
+
+/* thread specific data for glibc */
+
+#include <bits/libc-tsd.h>
+
+typedef int tsd_key_t[1];	/* no key data structure, libc magic does it */
+__libc_tsd_define (static, MALLOC)	/* declaration/common definition */
+#define tsd_key_create(key, destr)	((void) (key))
+#define tsd_setspecific(key, data)	__libc_tsd_set (MALLOC, (data))
+#define tsd_getspecific(key, vptr)	((vptr) = __libc_tsd_get (MALLOC))
+
+#include <sysdeps/generic/malloc-machine.h>
+
+#endif /* !defined(_MALLOC_MACHINE_H) */