FSH IOSEMCLEAR: Difference between revisions
Created page with "This function allows an FSD to clear the I/O event semaphore that is a part of the Extended Strategy request packet. ==Syntax== FSH_IOSEMCLEAR(pSem) ==Parameters== ;pSem:..." |
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This function allows an FSD to clear the I/O event semaphore that is a part of the Extended Strategy request packet. | {{DISPLAYTITLE:FSH_IOSEMCLEAR}} | ||
This function allows an FSD to clear the I/O event semaphore that is a part of the Extended Strategy request packet. | |||
==Syntax== | ==Syntax== | ||
FSH_IOSEMCLEAR(pSem) | FSH_IOSEMCLEAR(pSem) | ||
==Parameters== | ==Parameters== | ||
;pSem: is the handle to the I/O event semaphore. | ;pSem: is the handle to the I/O event semaphore. | ||
==Returns== | ==Returns== | ||
If no error is detected, a zero error code is returned. If an error is detected, one of the following error codes is returned: | If no error is detected, a zero error code is returned. If an error is detected, one of the following error codes is returned: | ||
*ERROR_EXCL_ALREADY_OWNED the exclusive semaphore is already owned. | |||
*ERROR_PROTECTION_VIOLATION the semaphore is inaccessible. | |||
==Calling Sequence== | |||
int far pascal FSH_IOSEMCLEAR(pSem) | |||
==Remarks== | ==Remarks== | ||
FSH_IOSEMCLEAR may block. | FSH_IOSEMCLEAR may block. | ||
For a detailed description of the Extended Strategy request interface, please see the OS/2 Version 2.0 Physical Device Driver Reference | For a detailed description of the Extended Strategy request interface, please see the ''OS/2 Version 2.0 Physical Device Driver Reference''. | ||
;Note: OS/2 does not validate input parameters. An FSD, therefore, should call [[FSH_PROBEBUF]] where appropriate. | |||
[[Category:IFS Interfaces]] | [[Category:IFS Interfaces]] | ||
Latest revision as of 04:46, 20 February 2020
This function allows an FSD to clear the I/O event semaphore that is a part of the Extended Strategy request packet.
Syntax
FSH_IOSEMCLEAR(pSem)
Parameters
- pSem
- is the handle to the I/O event semaphore.
Returns
If no error is detected, a zero error code is returned. If an error is detected, one of the following error codes is returned:
- ERROR_EXCL_ALREADY_OWNED the exclusive semaphore is already owned.
- ERROR_PROTECTION_VIOLATION the semaphore is inaccessible.
Calling Sequence
int far pascal FSH_IOSEMCLEAR(pSem)
Remarks
FSH_IOSEMCLEAR may block.
For a detailed description of the Extended Strategy request interface, please see the OS/2 Version 2.0 Physical Device Driver Reference.
- Note
- OS/2 does not validate input parameters. An FSD, therefore, should call FSH_PROBEBUF where appropriate.