clock_nanosleep
Implemented in Antinomie 0.7.0 · Syscall list
Synopsis
Section titled “Synopsis”long clock_nanosleep(clockid_t which_clock, int flags, const struct __kernel_timespec *rqtp, struct __kernel_timespec *rmtp);| Number (x86-64) | 230 |
| ABI | common |
| Kernel entry point | sys_clock_nanosleep |
This is the raw kernel prototype from the pinned Linux 6.12.94 schema, not the libc wrapper.
Description
Section titled “Description”Sleeps on a chosen clock, until an absolute time or for a relative duration.
Arguments
Section titled “Arguments”| Name | Type | Meaning |
|---|---|---|
which_clock (arg0) |
clockid_t |
Clock id, such as CLOCK_REALTIME or CLOCK_MONOTONIC. |
flags (arg1) |
int |
Option flags that change the behavior of the call. |
rqtp (arg2) |
const struct __kernel_timespec * |
Requested sleep time. |
rmtp (arg3) |
struct __kernel_timespec * |
Where to store the remaining sleep time. |
Return value
Section titled “Return value”On success: 0.
In an Antinomie trace the Return column and the ret filter field show the raw kernel return value. On failure that is the negative errno, for example -2 for ENOENT, not the -1 plus errno that the libc wrapper gives. syscall.errno holds the positive errno and syscall.success is false.
Common errors
Section titled “Common errors”| Raw return | Name | Meaning |
|---|---|---|
-4 |
EINTR |
The call was interrupted by a signal. |
-22 |
EINVAL |
An argument is invalid. |
Man page
Section titled “Man page”clock_nanosleep(2) on man7.org
Captured by Antinomie
Section titled “Captured by Antinomie”Coverage mark: Implemented. Every pointer argument has a capture rule in the pinned kernel patch and none of them records a “no decoder”, “address only” or “not observed” gap on any code path. Individual values can still be incomplete on a particular call; see the capture statuses.
Every call is recorded as an Entry record (the six argument words and the pointees copied at entry) and an Exit record (the return value and the pointees copied at exit).
Arguments
Section titled “Arguments”| Argument | When | How | Recorded field key | Condition |
|---|---|---|---|---|
which_clock (arg0) |
Entry | raw scalar word | args.0, args.which_clock |
|
flags (arg1) |
Entry | raw scalar word; Syscall Trace also decodes it into flag names (timer group), listing unknown bits separately |
args.1, args.flags |
|
rqtp (arg2) |
Entry | the pointer itself, as a raw word | args.2, args.raw[2] |
|
| ↳ pointee | Entry | structure timespec (fixed size) |
arg2.data |
always |
rmtp (arg3) |
Entry | the pointer itself, as a raw word | args.3, args.raw[3] |
|
| ↳ pointee | Exit | structure timespec (fixed size) |
arg3.data |
the call was interrupted (result -EINTR) and the sleep was relative (not TIMER_ABSTIME); records the time left |
Filter fields
Section titled “Filter fields”- Result:
ret,syscall.errno,syscall.success,syscall.duration_ns. - Argument words:
args.which_clock(arg0),args.flags(arg1),args.rqtp(arg2),args.rmtp(arg3);args.0toargs.5by position. - Structure
timespec[2]behindrqtp(arg2):args.rqtp.<member>fortv_nsec,tv_sec. - Structure
timespec[2]behindrmtp(arg3):args.rmtp.<member>fortv_nsec,tv_sec.
See Syscall Trace filter for the full syntax.
For what the capture statuses mean, see Capture statuses. For what is never recorded, see Known gaps.