time.h

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#ifndef _IPXE_TIME_H
#define _IPXE_TIME_H
 
/** @file
 *
 * Time source
 *
 */
 
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
FILE_SECBOOT ( PERMITTED );
 
#include <sys/time.h>
#include <ipxe/api.h>
#include <config/time.h>
 
/**
 * Calculate static inline time API function name
 *
 * @v _prefix           Subsystem prefix
 * @v _api_func         API function
 * @ret _subsys_func    Subsystem API function
 */
#define TIME_INLINE( _subsys, _api_func ) \
        SINGLE_API_INLINE ( TIME_PREFIX_ ## _subsys, _api_func )
 
/**
 * Provide a time API implementation
 *
 * @v _prefix           Subsystem prefix
 * @v _api_func         API function
 * @v _func             Implementing function
 */
#define PROVIDE_TIME( _subsys, _api_func, _func ) \
        PROVIDE_SINGLE_API ( TIME_PREFIX_ ## _subsys, _api_func, _func )
 
/**
 * Provide a static inline time API implementation
 *
 * @v _prefix           Subsystem prefix
 * @v _api_func         API function
 */
#define PROVIDE_TIME_INLINE( _subsys, _api_func ) \
        PROVIDE_SINGLE_API_INLINE ( TIME_PREFIX_ ## _subsys, _api_func )
 
/* Include all architecture-independent time API headers */
#include <ipxe/null_time.h>
#include <ipxe/efi/efi_time.h>
#include <ipxe/linux/linux_time.h>
 
/* Include all architecture-dependent time API headers */
#include <bits/time.h>
 
extern signed long time_offset;
 
/**
 * Get current time in seconds (ignoring system clock offset)
 *
 * @ret time            Time, in seconds
 */
time_t time_now ( void );
 
/**
 * Adjust system clock
 *
 * @v delta             Clock adjustment, in seconds
 */
static inline __attribute__ (( always_inline )) void
time_adjust ( signed long delta ) {
 
        time_offset += delta;
}
 
#endif /* _IPXE_TIME_H */