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AmigaDOS Data Structures
Revision as of 17:25, 27 April 2012 by Steven Solie (talk | contribs) (Created page with "= Process Data Structures = These values are created as part of an AmigaDOS process; there is a complete set for each process. A process is an Exec task with a number of ext...")
Process Data Structures
These values are created as part of an AmigaDOS process; there is a complete set for each process.
A process is an Exec task with a number of extra data structures appended. The process structure consists of:
- Exec task structure
- Exec message port
- AmigaDOS process value
The process identifier AmigaDOS uses internally is a pointer to the Exec message port (pr_MessagePort) from which the Exec task may be obtained.
AmigaDOS process values are as follows:
| Type | Name | Description |
|---|---|---|
| BPTR | pr_SegList | Array of seg lists used by this process |
| LONG | pr_StackSize | Size of process stack in bytes |
| APTR | pr_GlobVec | Global vector for this process (BCPL) |
| LONG | pr_TaskNum | CLI task number of zero if not a CLI |
| BPTR | pr_StackBase | Ptr to high memory end of process stack |
| LONG | pr_Result2 | Value of secondary result from last call |
| BPTR | pr_CurrentDir | Lock associated with current directory |
| BPTR | pr_CIS | Current CLI Input Stream |
| BPTR | pr_COS | Current CLI Output Stream |
| APTR | pr_ConsoleTask | Console handler process for current window |
| APTR | pr_FileSystemTask | File handler process for current drive |
| BPTR | pr_CLI | Pointer to CLI |
| APTR | pr_ReturnAdd | Pointer to previous stack frame |
| APTR | pr_PktWait | Function to be called when awaiting msg |
| APTR | pr_WindowPtr | Window for error printing |
