annotate src/nucleus/pi_defs.h @ 21:5dd2fa1d3da1

README: minor fixes
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 16 May 2020 18:44:01 +0000
parents 92470e5d0b9e
children
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1 /*************************************************************************/
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2 /* */
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3 /* Copyright Mentor Graphics Corporation 2002 */
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4 /* All Rights Reserved. */
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5 /* */
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6 /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */
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7 /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */
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8 /* SUBJECT TO LICENSE TERMS. */
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9 /* */
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10 /*************************************************************************/
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11
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12 /*************************************************************************/
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13 /* */
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14 /* FILE NAME VERSION */
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15 /* */
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16 /* pi_defs.h Nucleus PLUS 1.14 */
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17 /* */
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18 /* COMPONENT */
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19 /* */
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20 /* PI - Pipe Management */
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21 /* */
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22 /* DESCRIPTION */
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23 /* */
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24 /* This file contains data structure definitions and constants for */
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25 /* the message Pipe component. */
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26 /* */
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27 /* DATA STRUCTURES */
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28 /* */
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29 /* PI_PCB Pipe control block */
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30 /* PI_SUSPEND Pipe suspension block */
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31 /* */
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32 /* FUNCTIONS */
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33 /* */
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34 /* None */
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35 /* */
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36 /* DEPENDENCIES */
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37 /* */
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38 /* cs_defs.h Common service definitions */
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39 /* tc_defs.h Thread Control definitions */
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40 /* */
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41 /* HISTORY */
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42 /* */
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43 /* DATE REMARKS */
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44 /* */
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45 /* 03-01-1993 Created initial version 1.0 */
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46 /* 04-19-1993 Verified version 1.0 */
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47 /* 03-01-1994 Moved include files outside of */
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48 /* the file #ifndef to allow the */
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49 /* use of actual data structures, */
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50 /* removed protection structure, */
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51 /* put padding into structure, */
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52 /* resulting in version 1.1 */
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53 /* */
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54 /* 03-18-1994 Verified version 1.1 */
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55 /* 04-17-1996 updated to version 1.2 */
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56 /* 03-24-1998 Released version 1.3. */
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57 /* 03-26-1999 Released 1.11m (new release */
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58 /* numbering scheme) */
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59 /* 04-17-2002 Released version 1.13m */
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60 /* 11-07-2002 Released version 1.14 */
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61 /*************************************************************************/
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62
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63 #include "cs_defs.h" /* Common service constants */
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64 #include "tc_defs.h" /* Thread control constants */
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65
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66
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67 /* Check to see if the file has been included already. */
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68
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69 #ifndef PI_DEFS
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70 #define PI_DEFS
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71
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72
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73 /* Define constants local to this component. */
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74
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75 #define PI_PIPE_ID 0x50495045UL
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76
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77
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78 /* Define the Pipe Control Block data type. */
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79
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80 typedef struct PI_PCB_STRUCT
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81 {
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82 CS_NODE pi_created; /* Node for linking to */
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83 /* created pipe list */
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84 UNSIGNED pi_id; /* Internal PCB ID */
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85 CHAR pi_name[NU_MAX_NAME]; /* Pipe name */
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86 BOOLEAN pi_fixed_size; /* Fixed-size messages? */
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87 BOOLEAN pi_fifo_suspend; /* Suspension type flag */
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88 #if PAD_2
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89 DATA_ELEMENT pi_padding[PAD_2];
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90 #endif
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91 UNSIGNED pi_pipe_size; /* Total size of pipe */
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92 UNSIGNED pi_messages; /* Messages in pipe */
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93 UNSIGNED pi_message_size; /* Size of each message */
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94 UNSIGNED pi_available; /* Available bytes */
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95 BYTE_PTR pi_start; /* Start of pipe area */
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96 BYTE_PTR pi_end; /* End of pipe area + 1 */
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97 BYTE_PTR pi_read; /* Read pointer */
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98 BYTE_PTR pi_write; /* Write pointer */
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99 UNSIGNED pi_tasks_waiting; /* Number of waiting tasks*/
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100 struct PI_SUSPEND_STRUCT
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101 *pi_urgent_list; /* Urgent message suspend */
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102 struct PI_SUSPEND_STRUCT
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103 *pi_suspension_list; /* Suspension list */
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104 } PI_PCB;
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105
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106
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107 /* Define the Pipe suspension structure. This structure is allocated off of
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108 the caller's stack. */
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109
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110 typedef struct PI_SUSPEND_STRUCT
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111 {
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112 CS_NODE pi_suspend_link; /* Link to suspend blocks */
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113 PI_PCB *pi_pipe; /* Pointer to the pipe */
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114 TC_TCB *pi_suspended_task; /* Task suspended */
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115 BYTE_PTR pi_message_area; /* Pointer to message area*/
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116 UNSIGNED pi_message_size; /* Message size requested */
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117 UNSIGNED pi_actual_size; /* Actual size of message */
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118 STATUS pi_return_status; /* Return status */
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119 } PI_SUSPEND;
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120
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121 #endif
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122
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