Open System Services System Calls Reference Manual (G06.29+, H06.08+, J06.03+)

put_regFileIOHandler(2) OSS System Calls Reference Manual
NAME
put_regFileIOHandler - Registers the file number
LIBRARY
32-bit H-series and J-series OSS processes: /G/system/zdllnnn/zputdll
64-bit H-series and J-series OSS processes: /G/system/zdllnnn/yputdll
SYNOPSIS
#include <pthread.h>
put_error_t put_regFileIOHandler(
const short filenum,
const put_FileIOHandler_p functionPtr);
PARAMETERS
filenum Specifies the Guardian file number for the file being registered.
functionPtr Specifies user-supplied callback. This function must not block its invoking
thread; for example, it should not call the put_awaitio() function.
DESCRIPTION
This function registers the file number as one that the user will manage through a user-supplied
callback. This callback is invoked immediately after each I/O on filenum completes.
To use this function on systems running H06.21 or later RVUs or J06.10 or later RVUs, you must
perform all of the following tasks:
• Include the pthread.h header file in the application.
• Compile the application using the _PUT_MODEL_ feature test macro or equivalent
compiler command option.
• Link the application to the zputdll library (/G/system/zdllnnn/zputdll).
On systems running H06.24 or later H-series RVUs or J06.13 or later J-series RVUs, you can use
this function with 32-bit or 64-bit applications.
To use this function in a 32-bit application on systems running H06.24 or later RVUs or J06.13 or
later RVUs, perform the same tasks (described above) used to enable the function on systems
running H06.21/J06.10 or later RVUs.
To use this function in a 64-bit application on systems running H06.24 or later RVUs or J06.13 or
later RVUs, you must perform all of the following tasks:
• Include the pthread.h header file in the application.
• Compile the application using the _PUT_MODEL_ feature test macro or equivalent
compiler command option.
• Compile the application using the -Wlp64 compiler command option.
• Link the application to the yputdll library (/G/system/zdllnnn/yputdll).
RETURN VALUES
PUT_SUCCESS
The Guardian file number was successfully registered.
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