diff options
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/nptl/internaltypes.h | 16 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/createthread.c | 9 |
2 files changed, 19 insertions, 6 deletions
diff --git a/sysdeps/nptl/internaltypes.h b/sysdeps/nptl/internaltypes.h index 6d06a76baf..ca57c315d4 100644 --- a/sysdeps/nptl/internaltypes.h +++ b/sysdeps/nptl/internaltypes.h @@ -36,9 +36,10 @@ struct pthread_attr /* Stack handling. */ void *stackaddr; size_t stacksize; - /* Affinity map. */ - cpu_set_t *cpuset; - size_t cpusetsize; + + /* Allocated via a call to __pthread_attr_extension once needed. */ + struct pthread_attr_extension *extension; + void *unused; }; #define ATTR_FLAG_DETACHSTATE 0x0001 @@ -57,6 +58,15 @@ union pthread_attr_transparent struct pthread_attr internal; }; +/* Extension space for pthread attributes. Referenced by the + extension member of struct pthread_attr. */ +struct pthread_attr_extension +{ + /* Affinity map. */ + cpu_set_t *cpuset; + size_t cpusetsize; +}; + /* Mutex attribute data structure. */ struct pthread_mutexattr { diff --git a/sysdeps/unix/sysv/linux/createthread.c b/sysdeps/unix/sysv/linux/createthread.c index 21f9d24f2d..6588893ba5 100644 --- a/sysdeps/unix/sysv/linux/createthread.c +++ b/sysdeps/unix/sysv/linux/createthread.c @@ -52,8 +52,10 @@ create_thread (struct pthread *pd, const struct pthread_attr *attr, /* Determine whether the newly created threads has to be started stopped since we have to set the scheduling parameters or set the affinity. */ + bool need_setaffinity = (attr != NULL && attr->extension != NULL + && attr->extension->cpuset != 0); if (attr != NULL - && (__glibc_unlikely (attr->cpuset != NULL) + && (__glibc_unlikely (need_setaffinity) || __glibc_unlikely ((attr->flags & ATTR_FLAG_NOTINHERITSCHED) != 0))) *stopped_start = true; @@ -113,12 +115,13 @@ create_thread (struct pthread *pd, const struct pthread_attr *attr, int res; /* Set the affinity mask if necessary. */ - if (attr->cpuset != NULL) + if (need_setaffinity) { assert (*stopped_start); res = INTERNAL_SYSCALL_CALL (sched_setaffinity, pd->tid, - attr->cpusetsize, attr->cpuset); + attr->extension->cpusetsize, + attr->extension->cpuset); if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (res))) err_out: |