Initial creation of sourceware repository

gdb/osf-share/cma_init.h

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+/* 
+ * (c) Copyright 1990-1996 OPEN SOFTWARE FOUNDATION, INC.
+ * (c) Copyright 1990-1996 HEWLETT-PACKARD COMPANY
+ * (c) Copyright 1990-1996 DIGITAL EQUIPMENT CORPORATION
+ * (c) Copyright 1991, 1992 Siemens-Nixdorf Information Systems
+ * To anyone who acknowledges that this file is provided "AS IS" without
+ * any express or implied warranty: permission to use, copy, modify, and
+ * distribute this file for any purpose is hereby granted without fee,
+ * provided that the above copyright notices and this notice appears in
+ * all source code copies, and that none of the names listed above be used
+ * in advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission.  None of these organizations
+ * makes any representations about the suitability of this software for
+ * any purpose.
+ */
+/*
+ *	Header file for CMA initialization
+ */
+
+#ifndef CMA_INIT
+#define CMA_INIT
+
+/*
+ *  INCLUDE FILES
+ */
+#include <dce/cma_host.h>
+#include <cma_errors.h>
+
+/*
+ * CONSTANTS AND MACROS
+ */
+
+#define cma__c_env_maxattr	0
+#define cma__c_env_minattr	1
+#define cma__c_env_maxcond	2
+#define	cma__c_env_mincond	3
+#define cma__c_env_maxmutex	4
+#define cma__c_env_minmutex	5
+#define cma__c_env_maxthread	6
+#define cma__c_env_minthread	7
+#define cma__c_env_maxcluster	8
+#define cma__c_env_mincluster	9
+#define cma__c_env_maxvp	10
+#define cma__c_env_multiplex	11
+#define cma__c_env_trace	12
+#define cma__c_env_trace_file	13
+
+#define cma__c_env_count	13
+
+
+/*
+ * cma__int_init
+ *
+ * Initialize the main body of CMA exactly once.
+ *
+ * We raise an exception if, for some odd reason, there are already threads
+ * in the environment (e.g. kernel threads), and one of them is trying to
+ * initialize CMA before the  first thread got all the way through the actual
+ * initialization. This code maintains the invariants: "after successfully
+ * calling CMA_INIT, you can call any CMA function", and  "CMA is actually
+ * initialized at most once".
+ */
+/*#ifndef _HP_LIBC_R */
+
+#if  defined _HP_LIBC_R  ||(defined(SNI_SVR4) && !defined(CMA_INIT_NEEDED))
+# define cma__int_init()
+#else
+# define cma__int_init() { \
+    if (!cma__tac_isset(&cma__g_init_started)) { \
+	if (!cma__test_and_set (&cma__g_init_started)) { \
+	    cma__init_static (); \
+	    cma__test_and_set (&cma__g_init_done); \
+	    } \
+	else if (!cma__tac_isset (&cma__g_init_done)) { \
+	    cma__error (cma_s_inialrpro); \
+    }}}
+#endif
+
+/*
+ * TYPEDEFS
+ */
+
+typedef enum CMA__T_ENV_TYPE {
+    cma__c_env_type_int,
+    cma__c_env_type_file
+    } cma__t_env_type;
+
+typedef struct CMA__T_ENV {
+    char		*name;		/* Name of environment variable */
+    cma__t_env_type	type;		/* Type of variable */
+    cma_t_integer	value;		/* Numeric value of the variable */
+    } cma__t_env;
+
+/*
+ *  GLOBAL DATA
+ */
+
+extern cma__t_env		cma__g_env[cma__c_env_count];
+extern cma__t_atomic_bit	cma__g_init_started;
+extern cma__t_atomic_bit	cma__g_init_done;
+extern char			*cma__g_version;
+
+/*
+ * INTERNAL INTERFACES
+ */
+
+extern void
+cma__init_static (void);	/* Initialize static data */
+
+#if _CMA_OS_ != _CMA__VMS
+extern void cma__init_atfork (void);
+#endif
+
+#endif