Time-Related Functions

Document Information

Preface

Part I Designing Device Drivers for the Solaris Platform

1. Overview of Solaris Device Drivers

2. Solaris Kernel and Device Tree

3. Multithreading

4. Properties

5. Managing Events and Queueing Tasks

6. Driver Autoconfiguration

7. Device Access: Programmed I/O

8. Interrupt Handlers

9. Direct Memory Access (DMA)

10. Mapping Device and Kernel Memory

11. Device Context Management

12. Power Management

13. Hardening Solaris Drivers

14. Layered Driver Interface (LDI)

Part II Designing Specific Kinds of Device Drivers

15. Drivers for Character Devices

16. Drivers for Block Devices

17. SCSI Target Drivers

18. SCSI Host Bus Adapter Drivers

19. Drivers for Network Devices

20. USB Drivers

Part III Building a Device Driver

21. Compiling, Loading, Packaging, and Testing Drivers

22. Debugging, Testing, and Tuning Device Drivers

23. Recommended Coding Practices

Part IV Appendixes

A. Hardware Overview

B. Summary of Solaris DDI/DKI Services

Module Functions

Device Information Tree Node (dev_info_t) Functions

Device (dev_t) Functions

Property Functions

Device Software State Functions

Memory Allocation and Deallocation Functions

Kernel Thread Control and Synchronization Functions

Task Queue Management Functions

Interrupt Functions

Programmed I/O Functions

Direct Memory Access (DMA) Functions

User Space Access Functions

User Process Event Functions

User Process Information Functions

User Application Kernel and Device Access Functions

Time-Related Functions

Power Management Functions

Fault Management Functions

Kernel Statistics Functions

Kernel Logging and Printing Functions

Buffered I/O Functions

Virtual Memory Functions

Device ID Functions

SCSI Functions

Resource Map Management Functions

System Global State

Utility Functions

C. Making a Device Driver 64-Bit Ready

D. Console Frame Buffer Drivers

Index

The time-related functions are:

ddi_get_lbolt(): Return the number of clock ticks since reboot
ddi_get_time(): Return the current time in seconds
ddi_periodic_add(): Issue nanosecond periodic timeout requests
ddi_periodic_delete(): Cancel nanosecond periodic timeout requests
delay(): Delay execution for a specified number of clock ticks
drv_hztousec(): Convert clock ticks to microseconds
drv_usectohz(): Convert microseconds to clock ticks
drv_usecwait(): Busy-wait for specified interval
gethrtime(): Get high-resolution time
gethrvtime(): Get high-resolution LWP virtual time
timeout(): Execute a function after a specified length of time
untimeout(): Cancel the previous time out function call
drv_getparm(): ddi_get_lbolt(), ddi_get_time()

Table B-9 Deprecated Time-Related Functions

Deprecated Function	Replacement
`drv_getparm()`	`ddi_get_lbolt()`, `ddi_get_time()`