Auto merge of #2255 - devnexen:pthread_barrier_fbsd, r=JohnTitor

freebsd/dragonfly adding pthread barrier api.

Author: bors

libc-test/build.rs

@@ -2006,6 +2006,8 @@ fn test_freebsd(target: &str) {
 
             // m_owner field is a volatile __lwpid_t
             ("umutex", "m_owner") => true,
+            // c_has_waiters field is a volatile int32_t
+            ("ucond", "c_has_waiters") => true,
 
             _ => false,
         }

libc-test/semver/dragonfly.txt

@@ -1294,6 +1294,13 @@ pseudo_AF_XTP
 pthread_attr_get_np
 pthread_attr_getguardsize
 pthread_attr_getstack
+pthread_barrierattr_destroy
+pthread_barrierattr_getpshared
+pthread_barrierattr_init
+pthread_barrierattr_setpshared
+pthread_barrierattr_t
+pthread_barrier_destroy
+pthread_barrier_init
 pthread_cancel
 pthread_condattr_getclock
 pthread_condattr_getpshared

libc-test/semver/freebsd.txt

@@ -1542,6 +1542,14 @@ pseudo_AF_XTP
 pthread_attr_get_np
 pthread_attr_getguardsize
 pthread_attr_getstack
+pthread_barrierattr_destroy
+pthread_barrierattr_getpshared
+pthread_barrierattr_init
+pthread_barrierattr_setpshared
+pthread_barrierattr_t
+pthread_barrier_destroy
+pthread_barrier_init
+pthread_barrier_wait
 pthread_cancel
 pthread_condattr_getclock
 pthread_condattr_getpshared

src/unix/bsd/freebsdlike/dragonfly/mod.rs

@@ -27,6 +27,8 @@ pub type cpu_set_t = cpumask_t;
 
 pub type register_t = ::c_long;
 pub type umtx_t = ::c_int;
+pub type pthread_barrierattr_t = ::c_int;
+pub type pthread_barrier_t = ::uintptr_t;
 pub type pthread_spinlock_t = ::uintptr_t;
 
 #[cfg_attr(feature = "extra_traits", derive(Debug))]

src/unix/bsd/freebsdlike/freebsd/mod.rs

@@ -22,6 +22,8 @@ pub type posix_spawnattr_t = *mut ::c_void;
 pub type posix_spawn_file_actions_t = *mut ::c_void;
 
 pub type pthread_spinlock_t = *mut __c_anonymous_pthread_spinlock;
+pub type pthread_barrierattr_t = *mut __c_anonymous_pthread_barrierattr;
+pub type pthread_barrier_t = *mut __c_anonymous_pthread_barrier;
 
 s! {
     pub struct aiocb {
@@ -154,9 +156,30 @@ s! {
 
     }
 
+    pub struct ucond {
+        c_has_waiters: u32,
+        c_flags: u32,
+        c_clockid: u32,
+        c_spare: [u32; 1],
+    }
+
     pub struct __c_anonymous_pthread_spinlock {
         s_clock: umutex,
     }
+
+    pub struct __c_anonymous_pthread_barrierattr {
+        pshared: ::c_int,
+    }
+
+    pub struct __c_anonymous_pthread_barrier {
+        b_lock: umutex,
+        b_cv: ucond,
+        b_cycle: i64,
+        b_count: ::c_int,
+        b_waiters: ::c_int,
+        b_refcount: ::c_int,
+        b_destroying: ::c_int,
+    }
 }
 
 s_no_extra_traits! {

src/unix/bsd/freebsdlike/mod.rs

@@ -1513,6 +1513,23 @@ extern "C" {
         val: *mut ::c_int,
     ) -> ::c_int;
     pub fn pthread_rwlockattr_setpshared(attr: *mut pthread_rwlockattr_t, val: ::c_int) -> ::c_int;
+    pub fn pthread_barrierattr_init(attr: *mut ::pthread_barrierattr_t) -> ::c_int;
+    pub fn pthread_barrierattr_destroy(attr: *mut ::pthread_barrierattr_t) -> ::c_int;
+    pub fn pthread_barrierattr_getpshared(
+        attr: *const ::pthread_barrierattr_t,
+        shared: *mut ::c_int,
+    ) -> ::c_int;
+    pub fn pthread_barrierattr_setpshared(
+        attr: *mut ::pthread_barrierattr_t,
+        shared: ::c_int,
+    ) -> ::c_int;
+    pub fn pthread_barrier_init(
+        barrier: *mut pthread_barrier_t,
+        attr: *const ::pthread_barrierattr_t,
+        count: ::c_uint,
+    ) -> ::c_int;
+    pub fn pthread_barrier_destroy(barrier: *mut pthread_barrier_t) -> ::c_int;
+    pub fn pthread_barrier_wait(barrier: *mut pthread_barrier_t) -> ::c_int;
     pub fn pthread_set_name_np(tid: ::pthread_t, name: *const ::c_char);
     pub fn ptrace(request: ::c_int, pid: ::pid_t, addr: *mut ::c_char, data: ::c_int) -> ::c_int;
     pub fn pututxline(ut: *const utmpx) -> *mut utmpx;