OpenSolaris Launch

1 files changed, 161 insertions, 0 deletions

diff --git a/usr/src/uts/common/sys/synch.h b/usr/src/uts/common/sys/synch.h
new file mode 100644
index 0000000000..8f52d720cb
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+++ b/usr/src/uts/common/sys/synch.h
@@ -0,0 +1,161 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef	_SYS_SYNCH_H
+#define	_SYS_SYNCH_H
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#ifndef _ASM
+#include <sys/types.h>
+#include <sys/int_types.h>
+#endif /* _ASM */
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#ifndef _ASM
+/*
+ * Thread and LWP mutexes have the same type
+ * definitions.
+ *
+ * NOTE:
+ *
+ * POSIX requires that <pthread.h> define the structures pthread_mutex_t
+ * and pthread_cond_t.  Although these structures are identical to mutex_t
+ * (lwp_mutex_t) and cond_t (lwp_cond_t), defined here, a typedef of these
+ * types would require including <synch.h> in <pthread.h>, pulling in
+ * non-posix symbols/constants, violating POSIX namespace restrictions.  Hence,
+ * pthread_mutex_t/pthread_cond_t have been redefined (in <sys/types.h>).
+ * Any modifications done to mutex_t/lwp_mutex_t or cond_t/lwp_cond_t must
+ * also be done to pthread_mutex_t/pthread_cond_t.
+ */
+typedef struct _lwp_mutex {
+	struct {
+		uint16_t	flag1;
+		uint8_t		flag2;
+		uint8_t		ceiling;
+		union {
+			uint16_t bcptype;
+			struct {
+				uint8_t	count_type1;
+				uint8_t	count_type2;
+			} mtype_rcount;
+		} mbcp_type_un;
+		uint16_t	magic;
+	} flags;
+	union {
+		struct {
+			uint8_t	pad[8];
+		} lock64;
+		struct {
+			uint32_t ownerpid;
+			uint32_t lockword;
+		} lock32;
+		upad64_t owner64;
+	} lock;
+	upad64_t data;
+} lwp_mutex_t;
+
+/*
+ * Thread and LWP condition variables have the same
+ * type definition.
+ * NOTE:
+ * The layout of the following structure should be kept in sync with the
+ * layout of pthread_cond_t in sys/types.h. See NOTE above for lwp_mutex_t.
+ */
+typedef struct _lwp_cond {
+	struct {
+		uint8_t		flag[4];
+		uint16_t 	type;
+		uint16_t 	magic;
+	} flags;
+	upad64_t data;
+} lwp_cond_t;
+
+/*
+ * LWP semaphores
+ */
+typedef struct _lwp_sema {
+	uint32_t	count;		/* semaphore count */
+	uint16_t 	type;
+	uint16_t 	magic;
+	uint8_t		flags[8];	/* last byte reserved for waiters */
+	upad64_t	data;		/* optional data */
+} lwp_sema_t;
+
+/*
+ * Thread and LWP rwlocks have the same type definition.
+ * NOTE: The layout of this structure should be kept in sync with the layout
+ * of the correponding structure of pthread_rwlock_t in sys/types.h.
+ * Also, because we have to deal with C++, there is an identical structure
+ * for rwlock_t in head/sync.h that we cannot change.
+ */
+typedef struct _lwp_rwlock {
+	int32_t		readers;	/* -1 == writer else # of readers */
+	uint16_t	type;
+	uint16_t	magic;
+	lwp_mutex_t	mutex;		/* used to indicate ownership */
+	lwp_cond_t	readercv;	/* unused */
+	lwp_cond_t	writercv;	/* unused */
+} lwp_rwlock_t;
+
+#endif /* _ASM */
+/*
+ * Definitions of synchronization types.
+ */
+#define	USYNC_THREAD	0x00		/* private to a process */
+#define	USYNC_PROCESS	0x01		/* shared by processes */
+
+/* Keep the following 3 fields in sync with pthread.h */
+#define	LOCK_NORMAL	0x00		/* same as USYNC_THREAD */
+#define	LOCK_ERRORCHECK	0x02		/* error check lock */
+#define	LOCK_RECURSIVE	0x04		/* recursive lock */
+
+#define	USYNC_PROCESS_ROBUST	0x08	/* shared by processes robustly */
+
+/* Keep the following 5 fields in sync with pthread.h */
+
+#define	LOCK_PRIO_NONE		0x00
+#define	LOCK_PRIO_INHERIT	0x10
+#define	LOCK_PRIO_PROTECT	0x20
+#define	LOCK_STALL_NP		0x00
+#define	LOCK_ROBUST_NP		0x40
+
+/*
+ * lwp_mutex_t flags
+ */
+#define	LOCK_OWNERDEAD		0x1
+#define	LOCK_NOTRECOVERABLE	0x2
+#define	LOCK_INITED		0x4
+#define	LOCK_UNMAPPED		0x8
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* _SYS_SYNCH_H */