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Chapter 20
System Information
This chapter describes the NSPR API for obtaining system information This
includes the host name, system name and system release. Information about
the system page size is also available
Types
PRSysInfo
Syntax
typedef enum {
PR_SI_HOSTNAME, /* name of the host */
PR_SI_SYSNAME, /* name of the system */
PR_SI_RELEASE, /* release number of the system */
PR_SI_ARCHITECTURE /* architecture of the system */
} PRSysInfo;
Description
Define the command argument for the PR_GetSystemInfo()
function.
Functions
-
PR_GetSystemInfo
-
PR_GetPageSize
-
PR_GetPageShift
PR_GetSystemInfo
Return the information requested about the system.
Syntax
#include <prsystem.h>
PRStatus PR_GetSystemInfo(PRSysInfo cmd, char *buf, PRUint32 buflen);
Parameters
The function has the following parameters:
| cmd> |
Specifies the system information
required. |
| buf |
A pointer to a buffer to hold the null terminated string containing
the system information
|
| buflen |
The size of buf (in bytes). |
Returns
If successful, PR_SUCCESS. The buffer pointed to by buf contains the system
information specified by cmd
If unsuccessful, PR_FAILURE. The contents of the buffer pointed to
by buf are undefined.
Description
PR_GetSystemInfo returns the system information specified by cmd.
The value specified for cmd should be one of the enumerated values in the
enumerated type PRSysInfo .
The buffer is allocated by the caller and should be at least
SYS_INFO_BUFFER_LENGTH
bytes in length. Upon a successful return the system information is contained
in a null terminated string in buf.
PR_GetPageSize
Return the number of bytes in a page on the system.
Syntax
#include <prsystem.h>
PRInt32 PR_GetPageSize(void);
Description
PR_GetPageSize returns the number of bytes in a page on the system
PR_GetPageShift
Return the log2 of the size of a page on the system.
Syntax
#include <prsystem.h>
PRInt32 PR_GetPageShift(void);
Description
PR_GetPageShift returns the log2 value of the number of bytes in a page
on the system
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Last Updated: Tue Jul 14 17:13:50 PDT 1998
Copyright © 1998 Netscape
Communications Corporation
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