Mercurial > hg > toybox
changeset 734:7e0cea8fbc3e
Use sched_{set,get}affinity directly so musl doesn't have to provide wrappers.
author | Rob Landley <rob@landley.net> |
---|---|
date | Mon, 03 Dec 2012 16:16:06 -0600 |
parents | 0cd93dd23b8d |
children | 3aaba60133c8 |
files | toys/other/taskset.c |
diffstat | 1 files changed, 7 insertions(+), 5 deletions(-) [+] |
line wrap: on
line diff
--- a/toys/other/taskset.c Sat Dec 01 18:30:48 2012 -0600 +++ b/toys/other/taskset.c Mon Dec 03 16:16:06 2012 -0600 @@ -23,9 +23,11 @@ #define FOR_taskset #include "toys.h" -// Prototype for syscall wrappers sched.h refuses to give us -int sched_setaffinity(pid_t pid, size_t size, void *cpuset); -int sched_getaffinity(pid_t pid, size_t size, void *cpuset); +#include <sys/syscall.h> +#define sched_setaffinity(pid, size, cpuset) \ + syscall(__NR_sched_setaffinity, (pid_t)pid, (size_t)size, (void *)cpuset) +#define sched_getaffinity(pid, size, cpuset) \ + syscall(__NR_sched_getaffinity, (pid_t)pid, (size_t)size, (void *)cpuset) // mask is an array of long, which makes the layout a bit weird on big // endian systems but as long as it's consistent... @@ -40,7 +42,7 @@ if (!quiet) { int j = sizeof(toybuf), flag = 0; - if (sched_getaffinity(pid, sizeof(toybuf), (void *)mask)) + if (-1 == sched_getaffinity(pid, sizeof(toybuf), (void *)mask)) perror_exit(failed, "get", pid); printf("pid %d's %s affinity mask: ", pid, i ? "new" : "current"); @@ -70,7 +72,7 @@ mask[j/(2*sizeof(long))] |= digit << 4*(j&((2*sizeof(long))-1)); } - if (sched_setaffinity(pid, sizeof(toybuf), (void *)mask)) + if (-1 == sched_setaffinity(pid, sizeof(toybuf), (void *)mask)) perror_exit(failed, "set", pid); } }