Auto merge of #3447 - Ncerzzk:main, r=JohnTitor

add more pthread_attr functions and related constants:

pthread_attr_getinheritsched
pthread_attr_setinheritsched
pthread_attr_getschedpolicy
pthread_attr_setschedpolicy
pthread_attr_getschedparam
pthread_attr_setschedparam
PTHREAD_INHERIT_SCHED
PTHREAD_EXPLICIT_SCHED

Author: bors

libc-test/semver/linux.txt

@@ -1986,6 +1986,8 @@ PTHREAD_PRIO_INHERIT
 PTHREAD_PRIO_PROTECT
 PTHREAD_PROCESS_PRIVATE
 PTHREAD_PROCESS_SHARED
+PTHREAD_INHERIT_SCHED
+PTHREAD_EXPLICIT_SCHED
 PTHREAD_STACK_MIN
 PTHREAD_ONCE_INIT
 PTRACE_ATTACH
@@ -3655,6 +3657,12 @@ priority_t
 pread64
 preadv
 pthread_attr_getguardsize
+pthread_attr_getinheritsched
+pthread_attr_setinheritsched
+pthread_attr_getschedpolicy
+pthread_attr_setschedpolicy
+pthread_attr_getschedparam
+pthread_attr_setschedparam
 pthread_attr_getstack
 pthread_attr_setguardsize
 pthread_cancel

src/unix/linux_like/linux/mod.rs

@@ -2000,6 +2000,8 @@ pub const PTHREAD_PRIO_INHERIT: ::c_int = 1;
 pub const PTHREAD_PRIO_PROTECT: ::c_int = 2;
 pub const PTHREAD_PROCESS_PRIVATE: ::c_int = 0;
 pub const PTHREAD_PROCESS_SHARED: ::c_int = 1;
+pub const PTHREAD_INHERIT_SCHED: ::c_int = 0;
+pub const PTHREAD_EXPLICIT_SCHED: ::c_int = 1;
 pub const __SIZEOF_PTHREAD_COND_T: usize = 48;
 
 pub const RENAME_NOREPLACE: ::c_uint = 1;
@@ -5179,6 +5181,27 @@ extern "C" {
         guardsize: *mut ::size_t,
     ) -> ::c_int;
     pub fn pthread_attr_setguardsize(attr: *mut ::pthread_attr_t, guardsize: ::size_t) -> ::c_int;
+    pub fn pthread_attr_getinheritsched(
+        attr: *const ::pthread_attr_t,
+        inheritsched: *mut ::c_int,
+    ) -> ::c_int;
+    pub fn pthread_attr_setinheritsched(
+        attr: *mut ::pthread_attr_t,
+        inheritsched: ::c_int,
+    ) -> ::c_int;
+    pub fn pthread_attr_getschedpolicy(
+        attr: *const ::pthread_attr_t,
+        policy: *mut ::c_int,
+    ) -> ::c_int;
+    pub fn pthread_attr_setschedpolicy(attr: *mut ::pthread_attr_t, policy: ::c_int) -> ::c_int;
+    pub fn pthread_attr_getschedparam(
+        attr: *const ::pthread_attr_t,
+        param: *mut ::sched_param,
+    ) -> ::c_int;
+    pub fn pthread_attr_setschedparam(
+        attr: *mut ::pthread_attr_t,
+        param: *const ::sched_param,
+    ) -> ::c_int;
     pub fn sethostname(name: *const ::c_char, len: ::size_t) -> ::c_int;
     pub fn sched_get_priority_min(policy: ::c_int) -> ::c_int;
     pub fn pthread_condattr_getpshared(