exacct::object::item(3perl) [opensolaris man page]
Exacct::Object::Item(3PERL) Perl Library Functions Exacct::Object::Item(3PERL) NAME
Exacct::Object::Item - exacct item manipulation SYNOPSIS
use Sun::Solaris::Exacct::Object; my $ea_item = Sun::Solaris::Exacct::Object::Item->new( &EXT_UINT64 | &EXC_DEFAULT | &EXD_PROC_PID, $$); DESCRIPTION
This module is used for manipulating libexacct(3LIB) data Items. A libexacct Item is represented as an opaque reference blessed into the Sun::Solaris::Exacct::Object::Item class, which is a subclass of the Sun::Solaris::Exacct::Object class. The underlying libexacct data types are mapped onto Perl types as follows: libexacct type Perl internal type EXT_UINT8 IV (integer) EXT_UINT16 IV (integer) EXT_UINT32 IV (integer) EXT_UINT64 IV (integer) EXT_DOUBLE NV (double) EXT_STRING PV (string) EXT_RAW PV (string) EXT_EXACCT_OBJECT Sun::Solaris::Exacct::Object subclass Constants None. Functions None. Class methods Class methods include those inherited from the Sun::Solaris::Exacct::Object base class, plus the following: new($catalog, $value) This method creates and returns a new Sun::Solaris::Exacct::Object::Item. The catalog tag can be either an integer or a Sun::Solaris::Exacct::Catalog. This catalog tag controls the conversion of the Perl value to the correspond- ing Perl exacct data type as described in the table above. If the catalog tag has a type field of EXT_EXACCT_OBJECT, the value must be a reference to either an Item or a Group object and the passed object is recursively copied and stored inside the new Item. Because the returned Item is constant, it is impossible, for example, to create an Item representing CPU seconds and subsequently modify its value or change its catalog value. This behavior is intended to prevent mismatches between the catalog tag and the data value. Object methods Object methods are those inherited from the Sun::Solaris::Exacct::Object. Exports None. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWpl5u | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
Exacct(3PERL), Exacct::Catalog(3PERL), Exacct::File(3PERL), Exacct::Object(3PERL), Exacct::Object::Group(3PERL), libexacct(3LIB), attributes(5) SunOS 5.11 1 Dec 2002 Exacct::Object::Item(3PERL)
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Exacct(3PERL) Perl Library Functions Exacct(3PERL) NAME
Exacct - exacct system calls and error handling SYNOPSIS
use Sun::Solaris::Exacct qw(:EXACCT_ALL); my $ea_rec = getacct(P_PID, $$); DESCRIPTION
This module provides access to the ea_error(3EXACCT) function and for all the extended accounting system calls. Constants from the various libexacct(3LIB) header files are also provided. Constants The P_PID, P_TASKID, P_PROJID and all the EW_*, EP_*, EXR_* macros are provided as Perl constants. Functions getacct($idtype, $id) The $idtype parameter must be either P_TASKID or P_PID and $id must be a corresponding task or process ID. This function returns an object of type Sun::Solaris::Exacct::Object, representing the unpacked accounting buffer returned by the underlying getacct(2) system call. In the event of error, undef is returned. putacct($idtype, $id, $record) The $idtype parameter must be either P_TASKID or P_PID and $id must be a corresponding task or process ID. If $record is of type Sun::Solaris::Exacct::Object, it is converted to the corresponding packed libexacct object and passed to the putacct(2) system call. If $record is not of type Sun::Solaris::Exacct::Object it is converted to a string using the normal Perl conversion rules and stored as a raw buffer. For predictable and endian-independent results, any raw buffers should be constructed using the Perl pack() function. This function returns true on success and false on failure. wracct($idtype, $id, $flags) The $idtype parameter must be either P_TASKID or P_PID and $id must be a corresponding task or process ID. The $flags parameter must be either EW_INTERVAL or EW_PARTIAL. The parameters are passed directly to the underlying wracct(2) system call. This function returns true on success and false on failure. ea_error() This function provides access to the ea_error(3EXACCT) function. It returns a double-typed scalar that becomes one of the EXR_* con- stants. In a string context it becomes a descriptive error message. This is the exacct equivalent to the $!(errno) Perl variable. ea_error_str() This function returns a double-typed scalar that in a numeric context will be one of the EXR_* constants as returned by ea_error. In a string context it describes the value returned by ea_error. If ea_error returns EXR_SYSCALL_FAIL, the string value returned is the value returned by strerror(3C). This function is provided as a convenience so that repeated blocks of code like the following can be avoided: if (ea_error() == EXR_SYSCALL_FAIL) { print("error: $! "); } else { print("error: ", ea_error(), " "); } ea_register_catalog($cat_pfx, $catalog_id, $export, @idlist) This convenience function is a wrapper around the Sun::Solaris::Exacct::Catalog->register() method. ea_new_catalog($integer) ea_new_catalog($cat_obj) ea_new_catalog($type, $catalog, $id) These convenience functions are wrappers around the Sun::Solaris::Exacct::Catalog->new() method. See Exacct::Catalog(3PERL). ea_new_file($name, $oflags, creator => $creator, aflags => $aflags, mode => $mode) This convenience function is a wrapper around the Sun::Solaris::Exacct::File->new() method. See Exacct::File(3PERL). ea_new_item($catalog, $value) This convenience function is a wrapper around the Sun::Solaris::Exacct::Object::Item->new() method. See Exacct::Object::Item(3PERL). ea_new_group($catalog, @objects) This convenience function is a wrapper around the Sun::Solaris::Exacct::Object::Group->new() method. See Exacct::Object::Group(3PERL). ea_dump_object($object, $filehandle) This convenience function is a wrapper around the Sun::Solaris::Exacct::Object->dump() method. See Exacct::Object(3PERL). Class methods None. Object methods None. Exports By default nothing is exported from this module. The following tags can be used to selectively import constants and functions defined in this module: :SYSCALLS getacct(), putacct(), and wracct() :LIBCALLS ea_error() and ea_error_str() :CONSTANTS P_PID, P_TASKID, P_PROJID, EW_*, EP_*, and EXR_* :SHORTHAND ea_register_catalog(), ea_new_catalog(), ea_new_file(), ea_new_item(), and ea_new_group() :ALL :SYSCALLS, :LIBCALLS, :CONSTANTS, and :SHORTHAND :EXACCT_CONSTANTS :CONSTANTS, plus the :CONSTANTS tags for Sun::Solaris::Catalog, Sun::Solaris::File, and Sun::Solaris::Object :EXACCT_ALL :ALL, plus the :ALL tags for Sun::Solaris::Catalog, Sun::Solaris::File, and Sun::Solaris::Object ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWpl5u | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
getacct(2), putacct(2), wracct(2), ea_error(3EXACCT), Exacct::Catalog(3PERL), Exacct::File(3PERL), Exacct::Object(3PERL), Exacct::Object::Group(3PERL), Exacct::Object::Item(3PERL), libexacct(3LIB), attributes(5) NOTES
The modules described in the section 3PERL manual pages make extensive use of the Perl "double-typed scalar" facility. This facility allows a scalar value to behave either as an integer or as a string, depending upon context. It is the same behavior as exhibited by the $! Perl variable (errno). It is useful because it avoids the need to map from an integer value to the corresponding string to display a value. Some examples are provided below: # Assume $obj is a Sun::Solaris::Item my $type = $obj->type(); # Print "2 EO_ITEM" printf("%d %s ", $type, $type); # Behave as an integer, $i == 2 my $i = 0 + $type; # Behave as a string, $s = "abc EO_ITEM xyx" my $s = "abc $type xyz"; Wherever a function or method is documented as returning a double-typed scalar, the returned value exhibits this type of behavior. SunOS 5.11 1 Dec 2002 Exacct(3PERL)