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comparison src/nucleus/tcfe.c @ 7:0f80e1e4dce4

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src/nucleus: library C code import from FreeNucleus package
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 15 Jul 2018 20:57:33 +0000
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6:8b2a9a374324 7:0f80e1e4dce4
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 /* tcfe.c Nucleus PLUS 1.14 */
17 /* */
18 /* COMPONENT */
19 /* */
20 /* TC - Thread Control */
21 /* */
22 /* DESCRIPTION */
23 /* */
24 /* This file contains routines that check parameters to the */
25 /* routines that return information about a thread. */
26 /* */
27 /* DATA STRUCTURES */
28 /* */
29 /* None */
30 /* */
31 /* FUNCTIONS */
32 /* */
33 /* TCFE_Task_Information Retrieve task information */
34 /* */
35 /* DEPENDENCIES */
36 /* */
37 /* tc_extr.h Thread Control functions */
38 /* */
39 /* HISTORY */
40 /* */
41 /* DATE REMARKS */
42 /* */
43 /* 11-07-2002 Released version 1.14 */
44 /* */
45 /*************************************************************************/
46 #define NU_SOURCE_FILE
47
48
49 #include "tc_extr.h" /* Thread control functions */
50
51
52 /*************************************************************************/
53 /* */
54 /* FUNCTION */
55 /* */
56 /* TCFE_Task_Information */
57 /* */
58 /* DESCRIPTION */
59 /* */
60 /* This function performs error checking on the parameters supplied */
61 /* to the function that returns information about a task. */
62 /* */
63 /* CALLED BY */
64 /* */
65 /* Application */
66 /* */
67 /* CALLS */
68 /* */
69 /* [TCT_Check_Stack] Stack checking function */
70 /* TCT_System_Protect Protect scheduling info */
71 /* TCT_Unprotect Release protection */
72 /* TCF_Task_Information Returns task information */
73 /* */
74 /* INPUTS */
75 /* */
76 /* task_ptr Pointer to the task */
77 /* name Destination for the name */
78 /* status Destination for task status */
79 /* scheduled_count Destination for scheduled */
80 /* count of the task */
81 /* priority Destination for task priority*/
82 /* preempt Destination for preempt flag */
83 /* time_slice Destination for time slice */
84 /* stack_base Destination for pointer to */
85 /* base of task's stack */
86 /* stack_size Destination for stack size */
87 /* minimum_stack Destination for the minimum */
88 /* running size of the stack */
89 /* */
90 /* OUTPUTS */
91 /* */
92 /* NU_SUCCESS If a valid task pointer is */
93 /* supplied */
94 /* NU_INVALID_TASK If task pointer is invalid */
95 /* */
96 /* HISTORY */
97 /* */
98 /* DATE REMARKS */
99 /* */
100 /* 03-01-1993 Created initial version 1.0 */
101 /* */
102 /*************************************************************************/
103 STATUS TCFE_Task_Information(NU_TASK *task_ptr, CHAR *name,
104 DATA_ELEMENT *status, UNSIGNED *scheduled_count,
105 DATA_ELEMENT *priority, OPTION *preempt, UNSIGNED *time_slice,
106 VOID **stack_base, UNSIGNED *stack_size, UNSIGNED *minimum_stack)
107 {
108
109 STATUS completion; /* Completion status */
110 NU_SUPERV_USER_VARIABLES
111
112 /* Switch to supervisor mode */
113 NU_SUPERVISOR_MODE();
114
115 #ifdef NU_ENABLE_STACK_CHECK
116
117 /* Call stack checking function to check for an overflow condition. */
118 TCT_Check_Stack();
119
120 #endif
121
122 /* Check if parameters are valid. task is tested in TCF_Task_Inforation */
123 if (name == NU_NULL)
124 completion = NU_INVALID_POINTER;
125 else if (preempt == NU_NULL)
126 completion = NU_INVALID_POINTER;
127 else if (status == NU_NULL)
128 completion = NU_INVALID_POINTER;
129 else if (scheduled_count == NU_NULL)
130 completion = NU_INVALID_POINTER;
131 else if (priority == NU_NULL)
132 completion = NU_INVALID_POINTER;
133 else if (time_slice == NU_NULL)
134 completion = NU_INVALID_POINTER;
135 else if (stack_base == NU_NULL)
136 completion = NU_INVALID_POINTER;
137 else if (stack_size == NU_NULL)
138 completion = NU_INVALID_POINTER;
139 else if (minimum_stack == NU_NULL)
140 completion = NU_INVALID_POINTER;
141 else
142 completion = TCF_Task_Information(task_ptr, name, status, scheduled_count,
143 priority, preempt, time_slice, stack_base,
144 stack_size, minimum_stack);
145 TCT_Unprotect();
146
147 /* Return to user mode */
148 NU_USER_MODE();
149
150 return(completion);
151 }
152
153
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155