[thirdparty/binutils-gdb.git] / gdb / osf-share / cma_init.h

/* 
 * (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
Commit	Line	Data
5d394f70 SG	1	/*
	2	* (c) Copyright 1990-1996 OPEN SOFTWARE FOUNDATION, INC.
	3	* (c) Copyright 1990-1996 HEWLETT-PACKARD COMPANY
	4	* (c) Copyright 1990-1996 DIGITAL EQUIPMENT CORPORATION
	5	* (c) Copyright 1991, 1992 Siemens-Nixdorf Information Systems
	6	* To anyone who acknowledges that this file is provided "AS IS" without
	7	* any express or implied warranty: permission to use, copy, modify, and
	8	* distribute this file for any purpose is hereby granted without fee,
	9	* provided that the above copyright notices and this notice appears in
	10	* all source code copies, and that none of the names listed above be used
	11	* in advertising or publicity pertaining to distribution of the software
	12	* without specific, written prior permission. None of these organizations
	13	* makes any representations about the suitability of this software for
	14	* any purpose.
	15	*/
	16	/*
	17	* Header file for CMA initialization
	18	*/
	19
	20	#ifndef CMA_INIT
	21	#define CMA_INIT
	22
	23	/*
	24	* INCLUDE FILES
	25	*/
	26	#include <dce/cma_host.h>
	27	#include <cma_errors.h>
	28
	29	/*
	30	* CONSTANTS AND MACROS
	31	*/
	32
	33	#define cma__c_env_maxattr 0
	34	#define cma__c_env_minattr 1
	35	#define cma__c_env_maxcond 2
	36	#define cma__c_env_mincond 3
	37	#define cma__c_env_maxmutex 4
	38	#define cma__c_env_minmutex 5
	39	#define cma__c_env_maxthread 6
	40	#define cma__c_env_minthread 7
	41	#define cma__c_env_maxcluster 8
	42	#define cma__c_env_mincluster 9
	43	#define cma__c_env_maxvp 10
	44	#define cma__c_env_multiplex 11
	45	#define cma__c_env_trace 12
	46	#define cma__c_env_trace_file 13
	47
	48	#define cma__c_env_count 13
	49
	50
	51	/*
	52	* cma__int_init
	53	*
	54	* Initialize the main body of CMA exactly once.
	55	*
	56	* We raise an exception if, for some odd reason, there are already threads
	57	* in the environment (e.g. kernel threads), and one of them is trying to
	58	* initialize CMA before the first thread got all the way through the actual
	59	* initialization. This code maintains the invariants: "after successfully
	60	* calling CMA_INIT, you can call any CMA function", and "CMA is actually
	61	* initialized at most once".
	62	*/
	63	/#ifndef _HP_LIBC_R /
	64
65	#if defined _HP_LIBC_R \|\|(defined(SNI_SVR4) && !defined(CMA_INIT_NEEDED))
66	# define cma__int_init()
67	#else
68	# define cma__int_init() { \
69	if (!cma__tac_isset(&cma__g_init_started)) { \
70	if (!cma__test_and_set (&cma__g_init_started)) { \
71	cma__init_static (); \
72	cma__test_and_set (&cma__g_init_done); \
73	} \
74	else if (!cma__tac_isset (&cma__g_init_done)) { \
75	cma__error (cma_s_inialrpro); \
76	}}}
77	#endif
78
79	/*
80	* TYPEDEFS
81	*/
82
83	typedef enum CMA__T_ENV_TYPE {
84	cma__c_env_type_int,
85	cma__c_env_type_file
86	} cma__t_env_type;
87
88	typedef struct CMA__T_ENV {
89	char name; / Name of environment variable */
90	cma__t_env_type type; /* Type of variable */
91	cma_t_integer value; /* Numeric value of the variable */
92	} cma__t_env;
93
94	/*
95	* GLOBAL DATA
96	*/
97
98	extern cma__t_env cma__g_env[cma__c_env_count];
99	extern cma__t_atomic_bit cma__g_init_started;
100	extern cma__t_atomic_bit cma__g_init_done;
101	extern char *cma__g_version;
102
103	/*
104	* INTERNAL INTERFACES
105	*/
106
107	extern void
108	cma__init_static (void); /* Initialize static data */
109
110	#if _CMA_OS_ != _CMA__VMS
111	extern void cma__init_atfork (void);
112	#endif
113
114	#endif