tm.h File Reference
Interface: task management.
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#include <config.h>
#include <mem.h>
Go to the source code of this file.
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Defines |
#define | PRIO_LOWEST 1 |
| The lowest possible task priority.
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#define | PRIO_NORMAL 10 |
| The priority of most tasks.
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#define | PRIO_HIGHEST 20 |
| The highest possible task priority.
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#define | T_DEAD 0 |
| task states
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#define | T_ZOMBIE 1 |
| terminated, cleanup pending
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#define | T_WAITING 2 |
| waiting for an event
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#define | T_SLEEPING 3 |
| sleeping. wants to run.
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#define | T_RUNNING 4 |
| running
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#define | T_KERNEL (1 << 0) |
| task flags
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#define | T_USER (1 << 1) |
| user task
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#define | T_IDLE (1 << 2) |
| idle task
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#define | T_SHUTDOWN (1 << 7) |
| shutdown requested
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#define | DEFAULT_STACK_SIZE 512 |
| that's enough.
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#define | shutdown_requested() ((ctid->tflags & T_SHUTDOWN) != 0) |
| test to see if task has been asked to shutdown
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Typedefs |
typedef volatile unsigned char | tstate_t |
| task state type
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typedef volatile unsigned char | tflags_t |
| task flags type
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typedef unsigned char | priority_t |
| task priority type
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typedef unsigned long | wakeup_t |
| wakeup data area type
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typedef signed int | tid_t |
| task id type
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Variables |
tdata_t * | ctid |
Detailed Description
Interface: task management.
- Author:
- Markus L. Noga <markus@noga.de>
Defines types and flags used in task management.
Definition in file tm.h.
Define Documentation
#define DEFAULT_STACK_SIZE 512 |
that's enough.
Definition at line 81 of file tm.h.
The highest possible task priority.
Definition at line 55 of file tm.h.
The lowest possible task priority.
Definition at line 51 of file tm.h.
The priority of most tasks.
Definition at line 53 of file tm.h.
#define shutdown_requested |
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((ctid->tflags & T_SHUTDOWN) != 0) |
test to see if task has been asked to shutdown
Check task shutdown flag. If set, the task should shutdown as soon as possible. If clear, continue running.
Definition at line 134 of file tm.h.
task states
- Todo:
- the following comments on the defined may cause problems in when used in macros/expressions, etc. FixEm?
dead and gone, stack freed
Definition at line 65 of file tm.h.
idle task
Definition at line 77 of file tm.h.
#define T_KERNEL (1 << 0) |
task flags
kernel task
Definition at line 75 of file tm.h.
running
Definition at line 69 of file tm.h.
#define T_SHUTDOWN (1 << 7) |
shutdown requested
Definition at line 78 of file tm.h.
sleeping. wants to run.
Definition at line 68 of file tm.h.
user task
Definition at line 76 of file tm.h.
waiting for an event
Definition at line 67 of file tm.h.
terminated, cleanup pending
Definition at line 66 of file tm.h.
Typedef Documentation
task priority type
Definition at line 48 of file tm.h.
task flags type
Definition at line 46 of file tm.h.
task id type
In effect, the kernel simply typecasts *tdata_t to tid_t.
Definition at line 143 of file tm.h.
task state type
Definition at line 45 of file tm.h.
wakeup data area type
Definition at line 57 of file tm.h.
Variable Documentation