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extern/ptmalloc3/sysdeps/generic/atomic.h

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+/* Empty placeholder */

extern/ptmalloc3/sysdeps/generic/malloc-machine.h

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+/* Basic platform-independent 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.
+
+   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 _GENERIC_MALLOC_MACHINE_H
+#define _GENERIC_MALLOC_MACHINE_H
+
+#include <atomic.h>
+
+#ifndef mutex_init /* No threads, provide dummy macros */
+
+# define NO_THREADS
+
+/* The mutex functions used to do absolutely nothing, i.e. lock,
+   trylock and unlock would always just return 0.  However, even
+   without any concurrently active threads, a mutex can be used
+   legitimately as an `in use' flag.  To make the code that is
+   protected by a mutex async-signal safe, these macros would have to
+   be based on atomic test-and-set operations, for example. */
+typedef int mutex_t;
+
+# define mutex_init(m)              (*(m) = 0)
+# define mutex_lock(m)              ((*(m) = 1), 0)
+# define mutex_trylock(m)           (*(m) ? 1 : ((*(m) = 1), 0))
+# define mutex_unlock(m)            (*(m) = 0)
+
+typedef void *tsd_key_t;
+# define tsd_key_create(key, destr) do {} while(0)
+# define tsd_setspecific(key, data) ((key) = (data))
+# define tsd_getspecific(key, vptr) (vptr = (key))
+
+# define thread_atfork(prepare, parent, child) do {} while(0)
+
+#endif /* !defined mutex_init */
+
+#ifndef atomic_full_barrier
+# define atomic_full_barrier() __asm ("" ::: "memory")
+#endif
+
+#ifndef atomic_read_barrier
+# define atomic_read_barrier() atomic_full_barrier ()
+#endif
+
+#ifndef atomic_write_barrier
+# define atomic_write_barrier() atomic_full_barrier ()
+#endif
+
+#ifndef DEFAULT_TOP_PAD
+# define DEFAULT_TOP_PAD 131072
+#endif
+
+#endif /* !defined(_GENERIC_MALLOC_MACHINE_H) */

extern/ptmalloc3/sysdeps/generic/thread-st.h

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+/*
+ * $Id:$
+ * Generic version: no threads.
+ * by Wolfram Gloger 2004
+ */
+
+#include <stdio.h>
+
+struct thread_st {
+	char *sp;							/* stack pointer, can be 0 */
+	void (*func)(struct thread_st* st);	/* must be set by user */
+	int id;
+	int flags;
+	struct user_data u;
+};
+
+static void
+thread_init(void)
+{
+	printf("No threads.\n");
+}
+
+/* Create a thread. */
+static int
+thread_create(struct thread_st *st)
+{
+	st->flags = 0;
+	st->id = 1;
+	st->func(st);
+	return 0;
+}
+
+/* Wait for one of several subthreads to finish. */
+static void
+wait_for_thread(struct thread_st st[], int n_thr,
+				int (*end_thr)(struct thread_st*))
+{
+	int i;
+	for(i=0; i<n_thr; i++)
+		if(end_thr)
+			end_thr(&st[i]);
+}
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * End:
+ */