[libc-commits] [libc] [libc][POSIX][pthreads] implement pthread_rwlockattr_t functions (PR #89322)
Nick Desaulniers via libc-commits
libc-commits at lists.llvm.org
Thu Apr 18 15:00:04 PDT 2024
https://github.com/nickdesaulniers created https://github.com/llvm/llvm-project/pull/89322
Implement:
- pthread_rwlockattr_destroy
- pthread_rwlockattr_getpshared
- pthread_rwlockattr_init
- pthread_rwlockattr_setpshared
>From 1e11be974e420ac201e13ecd6e67abd85129f54b Mon Sep 17 00:00:00 2001
From: Nick Desaulniers <ndesaulniers at google.com>
Date: Thu, 18 Apr 2024 14:26:35 -0700
Subject: [PATCH] [libc][POSIX][pthreads] implement pthread_rwlockattr_t
functions
Implement:
- pthread_rwlockattr_destroy
- pthread_rwlockattr_getpshared
- pthread_rwlockattr_init
- pthread_rwlockattr_setpshared
---
libc/config/linux/api.td | 6 +-
libc/config/linux/x86_64/entrypoints.txt | 4 ++
libc/include/CMakeLists.txt | 5 +-
libc/include/llvm-libc-types/CMakeLists.txt | 1 +
.../llvm-libc-types/pthread_rwlockattr_t.h | 15 +++++
libc/spec/posix.td | 26 ++++++++
libc/src/pthread/CMakeLists.txt | 41 ++++++++++++
.../pthread/pthread_rwlockattr_destroy.cpp | 24 +++++++
libc/src/pthread/pthread_rwlockattr_destroy.h | 20 ++++++
.../pthread/pthread_rwlockattr_getpshared.cpp | 23 +++++++
.../pthread/pthread_rwlockattr_getpshared.h | 21 ++++++
libc/src/pthread/pthread_rwlockattr_init.cpp | 23 +++++++
libc/src/pthread/pthread_rwlockattr_init.h | 20 ++++++
.../pthread/pthread_rwlockattr_setpshared.cpp | 27 ++++++++
.../pthread/pthread_rwlockattr_setpshared.h | 20 ++++++
libc/test/src/pthread/CMakeLists.txt | 17 ++++-
.../src/pthread/pthread_rwlockattr_test.cpp | 64 +++++++++++++++++++
17 files changed, 352 insertions(+), 5 deletions(-)
create mode 100644 libc/include/llvm-libc-types/pthread_rwlockattr_t.h
create mode 100644 libc/src/pthread/pthread_rwlockattr_destroy.cpp
create mode 100644 libc/src/pthread/pthread_rwlockattr_destroy.h
create mode 100644 libc/src/pthread/pthread_rwlockattr_getpshared.cpp
create mode 100644 libc/src/pthread/pthread_rwlockattr_getpshared.h
create mode 100644 libc/src/pthread/pthread_rwlockattr_init.cpp
create mode 100644 libc/src/pthread/pthread_rwlockattr_init.h
create mode 100644 libc/src/pthread/pthread_rwlockattr_setpshared.cpp
create mode 100644 libc/src/pthread/pthread_rwlockattr_setpshared.h
create mode 100644 libc/test/src/pthread/pthread_rwlockattr_test.cpp
diff --git a/libc/config/linux/api.td b/libc/config/linux/api.td
index 5fb92a9c299cc3..7843513c4d27bb 100644
--- a/libc/config/linux/api.td
+++ b/libc/config/linux/api.td
@@ -176,11 +176,12 @@ def PThreadAPI : PublicAPI<"pthread.h"> {
"__pthread_tss_dtor_t",
"pthread_attr_t",
"pthread_condattr_t",
+ "pthread_key_t",
"pthread_mutex_t",
"pthread_mutexattr_t",
- "pthread_t",
- "pthread_key_t",
"pthread_once_t",
+ "pthread_rwlockattr_t",
+ "pthread_t",
];
}
@@ -259,6 +260,7 @@ def SysTypesAPI : PublicAPI<"sys/types.h"> {
"pthread_mutex_t",
"pthread_mutexattr_t",
"pthread_once_t",
+ "pthread_rwlockattr_t",
"pthread_t",
"size_t",
"ssize_t",
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index 2d8136536b218b..a8e28992766712 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -669,6 +669,10 @@ if(LLVM_LIBC_FULL_BUILD)
libc.src.pthread.pthread_mutexattr_setrobust
libc.src.pthread.pthread_mutexattr_settype
libc.src.pthread.pthread_once
+ libc.src.pthread.pthread_rwlockattr_destroy
+ libc.src.pthread.pthread_rwlockattr_getpshared
+ libc.src.pthread.pthread_rwlockattr_init
+ libc.src.pthread.pthread_rwlockattr_setpshared
libc.src.pthread.pthread_setspecific
# sched.h entrypoints
diff --git a/libc/include/CMakeLists.txt b/libc/include/CMakeLists.txt
index f5ba2791af3fb8..aeef46aabfce5c 100644
--- a/libc/include/CMakeLists.txt
+++ b/libc/include/CMakeLists.txt
@@ -322,11 +322,12 @@ add_gen_header(
.llvm-libc-types.__pthread_tss_dtor_t
.llvm-libc-types.pthread_attr_t
.llvm-libc-types.pthread_condattr_t
+ .llvm-libc-types.pthread_key_t
.llvm-libc-types.pthread_mutex_t
.llvm-libc-types.pthread_mutexattr_t
- .llvm-libc-types.pthread_t
- .llvm-libc-types.pthread_key_t
.llvm-libc-types.pthread_once_t
+ .llvm-libc-types.pthread_rwlockattr_t
+ .llvm-libc-types.pthread_t
)
add_gen_header(
diff --git a/libc/include/llvm-libc-types/CMakeLists.txt b/libc/include/llvm-libc-types/CMakeLists.txt
index f26fc0729dc94c..310374fb62ffe0 100644
--- a/libc/include/llvm-libc-types/CMakeLists.txt
+++ b/libc/include/llvm-libc-types/CMakeLists.txt
@@ -54,6 +54,7 @@ add_header(pthread_key_t HDR pthread_key_t.h)
add_header(pthread_mutex_t HDR pthread_mutex_t.h DEPENDS .__futex_word .__mutex_type)
add_header(pthread_mutexattr_t HDR pthread_mutexattr_t.h)
add_header(pthread_once_t HDR pthread_once_t.h DEPENDS .__futex_word)
+add_header(pthread_rwlockattr_t HDR pthread_rwlockattr_t.h)
add_header(pthread_t HDR pthread_t.h DEPENDS .__thread_type)
add_header(rlim_t HDR rlim_t.h)
add_header(time_t HDR time_t.h)
diff --git a/libc/include/llvm-libc-types/pthread_rwlockattr_t.h b/libc/include/llvm-libc-types/pthread_rwlockattr_t.h
new file mode 100644
index 00000000000000..a63de4f7b438c1
--- /dev/null
+++ b/libc/include/llvm-libc-types/pthread_rwlockattr_t.h
@@ -0,0 +1,15 @@
+//===-- Definition of pthread_rwlockattr_t type ---------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+#ifndef LLVM_LIBC_TYPES_PTHREAD_RWLOCKATTR_T_H
+#define LLVM_LIBC_TYPES_PTHREAD_RWLOCKATTR_T_H
+
+typedef struct {
+ int pshared;
+} pthread_rwlockattr_t;
+
+#endif // LLVM_LIBC_TYPES_PTHREAD_RWLOCKATTR_T_H
diff --git a/libc/spec/posix.td b/libc/spec/posix.td
index 0c88dbd848a3fb..d428d54e32a331 100644
--- a/libc/spec/posix.td
+++ b/libc/spec/posix.td
@@ -110,6 +110,10 @@ def POSIX : StandardSpec<"POSIX"> {
PtrType PThreadCondAttrTPtr = PtrType<PThreadCondAttrTType>;
ConstType ConstRestrictedPThreadCondAttrTPtr = ConstType<RestrictedPtrType<PThreadCondAttrTType>>;
+ NamedType PThreadRWLockAttrTType = NamedType<"pthread_rwlockattr_t">;
+ PtrType PThreadRWLockAttrTPtr = PtrType<PThreadRWLockAttrTType>;
+ ConstType ConstPThreadRWLockAttrTPtr = ConstType<PThreadRWLockAttrTPtr>;
+
NamedType PThreadMutexAttrTType = NamedType<"pthread_mutexattr_t">;
PtrType PThreadMutexAttrTPtr = PtrType<PThreadMutexAttrTType>;
RestrictedPtrType RestrictedPThreadMutexAttrTPtr = RestrictedPtrType<PThreadMutexAttrTType>;
@@ -993,6 +997,7 @@ def POSIX : StandardSpec<"POSIX"> {
PThreadMutexTType,
PThreadOnceCallback,
PThreadOnceT,
+ PThreadRWLockAttrTType,
PThreadStartT,
PThreadTSSDtorT,
PThreadTType,
@@ -1219,6 +1224,26 @@ def POSIX : StandardSpec<"POSIX"> {
RetValSpec<IntType>,
[ArgSpec<PThreadOnceTPtr>, ArgSpec<PThreadOnceCallback>]
>,
+ FunctionSpec<
+ "pthread_rwlockattr_destroy",
+ RetValSpec<IntType>,
+ [ArgSpec<PThreadRWLockAttrTPtr>]
+ >,
+ FunctionSpec<
+ "pthread_rwlockattr_getpshared",
+ RetValSpec<IntType>,
+ [ArgSpec<ConstPThreadRWLockAttrTPtr>, ArgSpec<IntPtr>]
+ >,
+ FunctionSpec<
+ "pthread_rwlockattr_init",
+ RetValSpec<IntType>,
+ [ArgSpec<PThreadRWLockAttrTPtr>]
+ >,
+ FunctionSpec<
+ "pthread_rwlockattr_setpshared",
+ RetValSpec<IntType>,
+ [ArgSpec<PThreadRWLockAttrTPtr>, ArgSpec<IntType>]
+ >,
]
>;
@@ -1575,6 +1600,7 @@ def POSIX : StandardSpec<"POSIX"> {
PThreadMutexAttrTType,
PThreadMutexTType,
PThreadOnceT,
+ PThreadRWLockAttrTType,
PThreadTType,
PidT,
SSizeTType,
diff --git a/libc/src/pthread/CMakeLists.txt b/libc/src/pthread/CMakeLists.txt
index 3d6cf6dde010b1..c57475c9114fa6 100644
--- a/libc/src/pthread/CMakeLists.txt
+++ b/libc/src/pthread/CMakeLists.txt
@@ -460,6 +460,47 @@ add_entrypoint_object(
libc.src.__support.threads.thread
)
+add_entrypoint_object(
+ pthread_rwlockattr_destroy
+ SRCS
+ pthread_rwlockattr_destroy.cpp
+ HDRS
+ pthread_rwlockattr_destroy.h
+ DEPENDS
+ libc.include.pthread
+)
+
+add_entrypoint_object(
+ pthread_rwlockattr_getpshared
+ SRCS
+ pthread_rwlockattr_getpshared.cpp
+ HDRS
+ pthread_rwlockattr_getpshared.h
+ DEPENDS
+ libc.include.pthread
+)
+
+add_entrypoint_object(
+ pthread_rwlockattr_init
+ SRCS
+ pthread_rwlockattr_init.cpp
+ HDRS
+ pthread_rwlockattr_init.h
+ DEPENDS
+ libc.include.pthread
+)
+
+add_entrypoint_object(
+ pthread_rwlockattr_setpshared
+ SRCS
+ pthread_rwlockattr_setpshared.cpp
+ HDRS
+ pthread_rwlockattr_setpshared.h
+ DEPENDS
+ libc.include.pthread
+ libc.include.errno
+)
+
add_entrypoint_object(
pthread_once
SRCS
diff --git a/libc/src/pthread/pthread_rwlockattr_destroy.cpp b/libc/src/pthread/pthread_rwlockattr_destroy.cpp
new file mode 100644
index 00000000000000..e3ca75112f0ef4
--- /dev/null
+++ b/libc/src/pthread/pthread_rwlockattr_destroy.cpp
@@ -0,0 +1,24 @@
+//===-- Implementation of the pthread_rwlockattr_destroy ------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "pthread_rwlockattr_destroy.h"
+
+#include "src/__support/common.h"
+
+#include <pthread.h> // pthread_rwlockattr_t
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(int, pthread_rwlockattr_destroy,
+ (pthread_rwlockattr_t * attr [[gnu::unused]])) {
+ // Initializing a pthread_rwlockattr_t acquires no resources, so this is a
+ // no-op.
+ return 0;
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/pthread/pthread_rwlockattr_destroy.h b/libc/src/pthread/pthread_rwlockattr_destroy.h
new file mode 100644
index 00000000000000..5904d6b0041873
--- /dev/null
+++ b/libc/src/pthread/pthread_rwlockattr_destroy.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for pthread_rwlockattr_destroy ----*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_PTHREAD_PTHREAD_RWLOCKATTR_DESTROY_H
+#define LLVM_LIBC_SRC_PTHREAD_PTHREAD_RWLOCKATTR_DESTROY_H
+
+#include <pthread.h>
+
+namespace LIBC_NAMESPACE {
+
+int pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_PTHREAD_PTHREAD_RWLOCKATTR_DESTROY_H
diff --git a/libc/src/pthread/pthread_rwlockattr_getpshared.cpp b/libc/src/pthread/pthread_rwlockattr_getpshared.cpp
new file mode 100644
index 00000000000000..0dad230a2bde26
--- /dev/null
+++ b/libc/src/pthread/pthread_rwlockattr_getpshared.cpp
@@ -0,0 +1,23 @@
+//===-- Implementation of the pthread_rwlockattr_getpshared ---------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "pthread_rwlockattr_getpshared.h"
+
+#include "src/__support/common.h"
+
+#include <pthread.h> // pthread_rwlockattr_t
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(int, pthread_rwlockattr_getpshared,
+ (const pthread_rwlockattr_t *attr, int *pshared)) {
+ *pshared = attr->pshared;
+ return 0;
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/pthread/pthread_rwlockattr_getpshared.h b/libc/src/pthread/pthread_rwlockattr_getpshared.h
new file mode 100644
index 00000000000000..64843e59aae697
--- /dev/null
+++ b/libc/src/pthread/pthread_rwlockattr_getpshared.h
@@ -0,0 +1,21 @@
+//===-- Implementation header for pthread_rwlockattr_getpshared -*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_PTHREAD_PTHREAD_RWLOCKATTR_GETPSHARED_H
+#define LLVM_LIBC_SRC_PTHREAD_PTHREAD_RWLOCKATTR_GETPSHARED_H
+
+#include <pthread.h>
+
+namespace LIBC_NAMESPACE {
+
+int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *attr,
+ int *pshared);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_PTHREAD_PTHREAD_RWLOCKATTR_GETPSHARED_H
diff --git a/libc/src/pthread/pthread_rwlockattr_init.cpp b/libc/src/pthread/pthread_rwlockattr_init.cpp
new file mode 100644
index 00000000000000..7971f1714db484
--- /dev/null
+++ b/libc/src/pthread/pthread_rwlockattr_init.cpp
@@ -0,0 +1,23 @@
+//===-- Implementation of the pthread_rwlockattr_init ---------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "pthread_rwlockattr_init.h"
+
+#include "src/__support/common.h"
+
+#include <pthread.h> // pthread_rwlockattr_t, PTHREAD_PROCESS_PRIVATE
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(int, pthread_rwlockattr_init,
+ (pthread_rwlockattr_t * attr)) {
+ attr->pshared = PTHREAD_PROCESS_PRIVATE;
+ return 0;
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/pthread/pthread_rwlockattr_init.h b/libc/src/pthread/pthread_rwlockattr_init.h
new file mode 100644
index 00000000000000..30ae499fb65dc5
--- /dev/null
+++ b/libc/src/pthread/pthread_rwlockattr_init.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for pthread_rwlockattr_init ----*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_PTHREAD_PTHREAD_RWLOCKATTR_INIT_H
+#define LLVM_LIBC_SRC_PTHREAD_PTHREAD_RWLOCKATTR_INIT_H
+
+#include <pthread.h>
+
+namespace LIBC_NAMESPACE {
+
+int pthread_rwlockattr_init(pthread_rwlockattr_t *attr);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_PTHREAD_PTHREAD_RWLOCKATTR_INIT_H
diff --git a/libc/src/pthread/pthread_rwlockattr_setpshared.cpp b/libc/src/pthread/pthread_rwlockattr_setpshared.cpp
new file mode 100644
index 00000000000000..6bcba7c1b49355
--- /dev/null
+++ b/libc/src/pthread/pthread_rwlockattr_setpshared.cpp
@@ -0,0 +1,27 @@
+//===-- Implementation of the pthread_rwlockattr_setpshared ---------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "pthread_rwlockattr_setpshared.h"
+
+#include "src/__support/common.h"
+
+#include <errno.h> // EINVAL
+#include <pthread.h> // pthread_rwlockattr_t, PTHREAD_PROCESS_SHARED, PTHREAD_PROCESS_PRIVATE
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(int, pthread_rwlockattr_setpshared,
+ (pthread_rwlockattr_t * attr, int pshared)) {
+ if (pshared != PTHREAD_PROCESS_SHARED && pshared != PTHREAD_PROCESS_PRIVATE)
+ return EINVAL;
+
+ attr->pshared = pshared;
+ return 0;
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/pthread/pthread_rwlockattr_setpshared.h b/libc/src/pthread/pthread_rwlockattr_setpshared.h
new file mode 100644
index 00000000000000..393c07d1eecbc5
--- /dev/null
+++ b/libc/src/pthread/pthread_rwlockattr_setpshared.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for pthread_rwlockattr_setpshared -*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_PTHREAD_PTHREAD_RWLOCKATTR_SETPSHARED_H
+#define LLVM_LIBC_SRC_PTHREAD_PTHREAD_RWLOCKATTR_SETPSHARED_H
+
+#include <pthread.h>
+
+namespace LIBC_NAMESPACE {
+
+int pthread_rwlockattr_setpshared(pthread_rwlockattr_t *attr, int pshared);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_PTHREAD_PTHREAD_RWLOCKATTR_SETPSHARED_H
diff --git a/libc/test/src/pthread/CMakeLists.txt b/libc/test/src/pthread/CMakeLists.txt
index 51954a5babd2c5..8999d7c397deb6 100644
--- a/libc/test/src/pthread/CMakeLists.txt
+++ b/libc/test/src/pthread/CMakeLists.txt
@@ -56,4 +56,19 @@ add_libc_unittest(
libc.src.pthread.pthread_condattr_init
libc.src.pthread.pthread_condattr_setclock
libc.src.pthread.pthread_condattr_setpshared
- )
+)
+
+add_libc_unittest(
+ pthread_rwlockattr_test
+ SUITE
+ libc_pthread_unittests
+ SRCS
+ pthread_rwlockattr_test.cpp
+ DEPENDS
+ libc.include.errno
+ libc.include.pthread
+ libc.src.pthread.pthread_rwlockattr_destroy
+ libc.src.pthread.pthread_rwlockattr_getpshared
+ libc.src.pthread.pthread_rwlockattr_init
+ libc.src.pthread.pthread_rwlockattr_setpshared
+)
diff --git a/libc/test/src/pthread/pthread_rwlockattr_test.cpp b/libc/test/src/pthread/pthread_rwlockattr_test.cpp
new file mode 100644
index 00000000000000..6e5ae70df7343f
--- /dev/null
+++ b/libc/test/src/pthread/pthread_rwlockattr_test.cpp
@@ -0,0 +1,64 @@
+//===-- Unittests for pthread_rwlockattr_t --------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "include/llvm-libc-macros/generic-error-number-macros.h" // EINVAL
+#include "src/pthread/pthread_rwlockattr_destroy.h"
+#include "src/pthread/pthread_rwlockattr_getpshared.h"
+#include "src/pthread/pthread_rwlockattr_init.h"
+#include "src/pthread/pthread_rwlockattr_setpshared.h"
+#include "test/UnitTest/Test.h"
+
+// TODO: https://github.com/llvm/llvm-project/issues/88997
+#include <pthread.h> // PTHREAD_PROCESS_PRIVATE, PTHREAD_PROCESS_SHARED
+
+TEST(LlvmLibcPThreadRWLockAttrTest, InitAndDestroy) {
+ pthread_rwlockattr_t attr;
+ ASSERT_EQ(LIBC_NAMESPACE::pthread_rwlockattr_init(&attr), 0);
+ ASSERT_EQ(LIBC_NAMESPACE::pthread_rwlockattr_destroy(&attr), 0);
+}
+
+TEST(LlvmLibcPThreadRWLockAttrTest, GetDefaultValues) {
+ pthread_rwlockattr_t attr;
+
+ // Invalid value.
+ int pshared = 42;
+
+ ASSERT_EQ(LIBC_NAMESPACE::pthread_rwlockattr_init(&attr), 0);
+ ASSERT_EQ(LIBC_NAMESPACE::pthread_rwlockattr_getpshared(&attr, &pshared), 0);
+ ASSERT_EQ(pshared, PTHREAD_PROCESS_PRIVATE);
+ ASSERT_EQ(LIBC_NAMESPACE::pthread_rwlockattr_destroy(&attr), 0);
+}
+
+TEST(LlvmLibcPThreadRWLockAttrTest, SetGoodValues) {
+ pthread_rwlockattr_t attr;
+
+ // Invalid value.
+ int pshared = 42;
+
+ ASSERT_EQ(LIBC_NAMESPACE::pthread_rwlockattr_init(&attr), 0);
+ ASSERT_EQ(LIBC_NAMESPACE::pthread_rwlockattr_setpshared(
+ &attr, PTHREAD_PROCESS_SHARED),
+ 0);
+ ASSERT_EQ(LIBC_NAMESPACE::pthread_rwlockattr_getpshared(&attr, &pshared), 0);
+ ASSERT_EQ(pshared, PTHREAD_PROCESS_SHARED);
+ ASSERT_EQ(LIBC_NAMESPACE::pthread_rwlockattr_destroy(&attr), 0);
+}
+
+TEST(LlvmLibcPThreadRWLockAttrTest, SetBadValues) {
+ pthread_rwlockattr_t attr;
+
+ // Invalid value.
+ int pshared = 42;
+
+ ASSERT_EQ(LIBC_NAMESPACE::pthread_rwlockattr_init(&attr), 0);
+ ASSERT_EQ(LIBC_NAMESPACE::pthread_rwlockattr_setpshared(&attr, pshared),
+ EINVAL);
+ ASSERT_EQ(LIBC_NAMESPACE::pthread_rwlockattr_getpshared(&attr, &pshared), 0);
+ ASSERT_EQ(pshared, PTHREAD_PROCESS_PRIVATE);
+ ASSERT_EQ(LIBC_NAMESPACE::pthread_rwlockattr_destroy(&attr), 0);
+}
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