diff options
Diffstat (limited to 'man3/pthread_setaffinity_np.3')
| -rw-r--r-- | man3/pthread_setaffinity_np.3 | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/man3/pthread_setaffinity_np.3 b/man3/pthread_setaffinity_np.3 index 112317d..cf91c59 100644 --- a/man3/pthread_setaffinity_np.3 +++ b/man3/pthread_setaffinity_np.3 @@ -4,7 +4,7 @@ .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft .\" -.TH pthread_setaffinity_np 3 2023-07-20 "Linux man-pages 6.05.01" +.TH pthread_setaffinity_np 3 2023-10-31 "Linux man-pages 6.7" .SH NAME pthread_setaffinity_np, pthread_getaffinity_np \- set/get CPU affinity of a thread @@ -15,7 +15,7 @@ POSIX threads library .nf .BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */" .B #include <pthread.h> -.PP +.P .BI "int pthread_setaffinity_np(pthread_t " thread ", size_t " cpusetsize , .BI " const cpu_set_t *" cpuset ); .BI "int pthread_getaffinity_np(pthread_t " thread ", size_t " cpusetsize , @@ -33,20 +33,20 @@ If the call is successful, and the thread is not currently running on one of the CPUs in .IR cpuset , then it is migrated to one of those CPUs. -.PP +.P The .BR pthread_getaffinity_np () function returns the CPU affinity mask of the thread .I thread in the buffer pointed to by .IR cpuset . -.PP +.P For more details on CPU affinity masks, see .BR sched_setaffinity (2). For a description of a set of macros that can be used to manipulate and inspect CPU sets, see .BR CPU_SET (3). -.PP +.P The argument .I cpusetsize is the length (in bytes) of the buffer pointed to by @@ -109,13 +109,12 @@ T{ .BR pthread_getaffinity_np () T} Thread safety MT-Safe .TE -.sp 1 .SH STANDARDS GNU; hence the suffix "_np" (nonportable) in the names. .SH HISTORY glibc 2.3.4. -.PP +.P In glibc 2.3.3 only, versions of these functions were provided that did not have a .I cpusetsize @@ -135,13 +134,13 @@ runs if the "cpuset" mechanism described in is being used. These restrictions on the actual set of CPUs on which the thread will run are silently imposed by the kernel. -.PP +.P These functions are implemented on top of the .BR sched_setaffinity (2) and .BR sched_getaffinity (2) system calls. -.PP +.P A new thread created by .BR pthread_create (3) inherits a copy of its creator's CPU affinity mask. @@ -153,7 +152,7 @@ to set its CPU affinity mask to include CPUs 0 to 7 and then calls .BR pthread_getaffinity_np () to check the resulting CPU affinity mask of the thread. -.PP +.P .\" SRC BEGIN (pthread_setaffinity_np.c) .EX #define _GNU_SOURCE |