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comparison src/nucleus/pi_defs.h @ 0:4e78acac3d88

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src/{condat,cs,gpf,nucleus}: import from Selenite
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 16 Oct 2020 06:23:26 +0000
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-1:000000000000 0:4e78acac3d88
1 /*************************************************************************/
2 /* */
3 /* Copyright Mentor Graphics Corporation 2002 */
4 /* All Rights Reserved. */
5 /* */
6 /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */
7 /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */
8 /* SUBJECT TO LICENSE TERMS. */
9 /* */
10 /*************************************************************************/
11
12 /*************************************************************************/
13 /* */
14 /* FILE NAME VERSION */
15 /* */
16 /* pi_defs.h Nucleus PLUS 1.14 */
17 /* */
18 /* COMPONENT */
19 /* */
20 /* PI - Pipe Management */
21 /* */
22 /* DESCRIPTION */
23 /* */
24 /* This file contains data structure definitions and constants for */
25 /* the message Pipe component. */
26 /* */
27 /* DATA STRUCTURES */
28 /* */
29 /* PI_PCB Pipe control block */
30 /* PI_SUSPEND Pipe suspension block */
31 /* */
32 /* FUNCTIONS */
33 /* */
34 /* None */
35 /* */
36 /* DEPENDENCIES */
37 /* */
38 /* cs_defs.h Common service definitions */
39 /* tc_defs.h Thread Control definitions */
40 /* */
41 /* HISTORY */
42 /* */
43 /* DATE REMARKS */
44 /* */
45 /* 03-01-1993 Created initial version 1.0 */
46 /* 04-19-1993 Verified version 1.0 */
47 /* 03-01-1994 Moved include files outside of */
48 /* the file #ifndef to allow the */
49 /* use of actual data structures, */
50 /* removed protection structure, */
51 /* put padding into structure, */
52 /* resulting in version 1.1 */
53 /* */
54 /* 03-18-1994 Verified version 1.1 */
55 /* 04-17-1996 updated to version 1.2 */
56 /* 03-24-1998 Released version 1.3. */
57 /* 03-26-1999 Released 1.11m (new release */
58 /* numbering scheme) */
59 /* 04-17-2002 Released version 1.13m */
60 /* 11-07-2002 Released version 1.14 */
61 /*************************************************************************/
62
63 #include "cs_defs.h" /* Common service constants */
64 #include "tc_defs.h" /* Thread control constants */
65
66
67 /* Check to see if the file has been included already. */
68
69 #ifndef PI_DEFS
70 #define PI_DEFS
71
72
73 /* Define constants local to this component. */
74
75 #define PI_PIPE_ID 0x50495045UL
76
77
78 /* Define the Pipe Control Block data type. */
79
80 typedef struct PI_PCB_STRUCT
81 {
82 CS_NODE pi_created; /* Node for linking to */
83 /* created pipe list */
84 UNSIGNED pi_id; /* Internal PCB ID */
85 CHAR pi_name[NU_MAX_NAME]; /* Pipe name */
86 BOOLEAN pi_fixed_size; /* Fixed-size messages? */
87 BOOLEAN pi_fifo_suspend; /* Suspension type flag */
88 #if PAD_2
89 DATA_ELEMENT pi_padding[PAD_2];
90 #endif
91 UNSIGNED pi_pipe_size; /* Total size of pipe */
92 UNSIGNED pi_messages; /* Messages in pipe */
93 UNSIGNED pi_message_size; /* Size of each message */
94 UNSIGNED pi_available; /* Available bytes */
95 BYTE_PTR pi_start; /* Start of pipe area */
96 BYTE_PTR pi_end; /* End of pipe area + 1 */
97 BYTE_PTR pi_read; /* Read pointer */
98 BYTE_PTR pi_write; /* Write pointer */
99 UNSIGNED pi_tasks_waiting; /* Number of waiting tasks*/
100 struct PI_SUSPEND_STRUCT
101 *pi_urgent_list; /* Urgent message suspend */
102 struct PI_SUSPEND_STRUCT
103 *pi_suspension_list; /* Suspension list */
104 } PI_PCB;
105
106
107 /* Define the Pipe suspension structure. This structure is allocated off of
108 the caller's stack. */
109
110 typedef struct PI_SUSPEND_STRUCT
111 {
112 CS_NODE pi_suspend_link; /* Link to suspend blocks */
113 PI_PCB *pi_pipe; /* Pointer to the pipe */
114 TC_TCB *pi_suspended_task; /* Task suspended */
115 BYTE_PTR pi_message_area; /* Pointer to message area*/
116 UNSIGNED pi_message_size; /* Message size requested */
117 UNSIGNED pi_actual_size; /* Actual size of message */
118 STATUS pi_return_status; /* Return status */
119 } PI_SUSPEND;
120
121 #endif
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