Difference between revisions of "SOCU:poll"
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(Created page with "=Request= {| class="wikitable" border="1" |- ! Index Word ! Description |- | 0 | Header code [0x00140084] |- | 1 | nfds_t nfds |- | 2 | int timeout |- | 3 | Value 0x20 (process...") |
(→Events: Fix values for flags and add new flags) |
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(2 intermediate revisions by one other user not shown) | |||
Line 24: | Line 24: | ||
|- | |- | ||
| 6 | | 6 | ||
− | | | + | | Pointer to input pollfd struct array |
|} | |} | ||
Line 37: | Line 37: | ||
|- | |- | ||
| 1 | | 1 | ||
− | | | + | | Pointer to output pollfd struct array |
|} | |} | ||
Line 54: | Line 54: | ||
| 2 | | 2 | ||
| POSIX return value | | POSIX return value | ||
+ | |} | ||
+ | |||
+ | =pollfd struct= | ||
+ | {| class="wikitable" border="1" | ||
+ | |- | ||
+ | ! Type | ||
+ | ! Name | ||
+ | ! Description | ||
+ | |- | ||
+ | | u32 | ||
+ | | fd | ||
+ | | Socket handle | ||
+ | |- | ||
+ | | u32 | ||
+ | | events | ||
+ | | Events to poll for (input) | ||
+ | |- | ||
+ | | u32 | ||
+ | | revents | ||
+ | | Events received (output) | ||
+ | |} | ||
+ | |||
+ | =Events= | ||
+ | Events are a bitwise set of these flags. | ||
+ | {| class="wikitable" border="1" | ||
+ | |- | ||
+ | ! Value | ||
+ | ! Name | ||
+ | ! Description | ||
+ | |- | ||
+ | | 0x01 | ||
+ | | POLLRDNORM | ||
+ | | Normal data can be read. | ||
+ | |- | ||
+ | | 0x02 | ||
+ | | POLLRDBAND | ||
+ | | Priority Band Data can be read. | ||
+ | |- | ||
+ | | 0x04 | ||
+ | | POLLPRI | ||
+ | | Urgent data can be read. | ||
+ | |- | ||
+ | | 0x08 | ||
+ | | POLLWRNORM | ||
+ | | Normal data can be written. | ||
+ | |- | ||
+ | | 0x10 | ||
+ | | POLLWRBAND | ||
+ | | Priority data can be written. | ||
+ | |- | ||
+ | | 0x20 | ||
+ | | POLLERR | ||
+ | | Socket has an error condition. | ||
+ | |- | ||
+ | | 0x40 | ||
+ | | POLLHUP | ||
+ | | Socket has been disconnected. | ||
+ | |- | ||
+ | | 0x80 | ||
+ | | POLLNVAL | ||
+ | | Invalid socket handle. This is set if you use fd=-1, which is non-standard behavior. | ||
+ | |- | ||
+ | | POLLRDNORM <nowiki>|</nowiki> POLLRDBAND | ||
+ | | POLLIN | ||
+ | | Data can be read. | ||
+ | |- | ||
+ | | POLLWRNORM | ||
+ | | POLLOUT | ||
+ | | Data can be written. | ||
|} | |} |
Latest revision as of 13:05, 24 November 2019
Request[edit]
Index Word | Description |
---|---|
0 | Header code [0x00140084] |
1 | nfds_t nfds |
2 | int timeout |
3 | Value 0x20 (processID header) |
4 | ProcessID set by the ARM11 kernel. |
5 | (insize<<14) | 0x2802 |
6 | Pointer to input pollfd struct array |
The following is located 0x100-bytes after the beginning of the above command buffer:
Index Word | Description |
---|---|
0 | (outsize<<14) | 2 |
1 | Pointer to output pollfd struct array |
Response[edit]
Index Word | Description |
---|---|
0 | Header code |
1 | Result code |
2 | POSIX return value |
pollfd struct[edit]
Type | Name | Description |
---|---|---|
u32 | fd | Socket handle |
u32 | events | Events to poll for (input) |
u32 | revents | Events received (output) |
Events[edit]
Events are a bitwise set of these flags.
Value | Name | Description |
---|---|---|
0x01 | POLLRDNORM | Normal data can be read. |
0x02 | POLLRDBAND | Priority Band Data can be read. |
0x04 | POLLPRI | Urgent data can be read. |
0x08 | POLLWRNORM | Normal data can be written. |
0x10 | POLLWRBAND | Priority data can be written. |
0x20 | POLLERR | Socket has an error condition. |
0x40 | POLLHUP | Socket has been disconnected. |
0x80 | POLLNVAL | Invalid socket handle. This is set if you use fd=-1, which is non-standard behavior. |
POLLRDNORM | POLLRDBAND | POLLIN | Data can be read. |
POLLWRNORM | POLLOUT | Data can be written. |