From 0dfb289a3b362b082ac3608d887e42f09dadc0d2 Mon Sep 17 00:00:00 2001
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From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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Date: Mon, 31 Dec 2018 16:22:07 +0100
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Subject: [PATCH] Properly detect the availability of pthread_setname_np()
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This commit adds a CMake check for the availability of
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pthread_setname_np(), and only uses it on Linux when available.
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Indeed, some C libraries, such as uClibc, do not provide this
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non-POSIX function in all cases.
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Upstream: https://github.com/grpc/grpc/pull/17610
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Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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---
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CMakeLists.txt | 6 ++++++
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include/grpc/impl/codegen/port_platform.h | 2 ++
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2 files changed, 8 insertions(+)
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diff --git a/CMakeLists.txt b/CMakeLists.txt
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index 45c2fcb..0b2be4f 100644
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--- a/CMakeLists.txt
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+++ b/CMakeLists.txt
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@@ -208,6 +208,12 @@ if (NOT DEFINED CMAKE_POSITION_INDEPENDENT_CODE)
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endif()
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list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules")
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+include(CheckSymbolExists)
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+check_symbol_exists(pthread_setname_np pthread.h HAVE_PTHREAD_SETNAME_NP)
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+if (HAVE_PTHREAD_SETNAME_NP)
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+ add_definitions(-DHAVE_PTHREAD_SETNAME_NP)
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+endif ()
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+
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if(MSVC)
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include(cmake/msvc_static_runtime.cmake)
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add_definitions(-D_WIN32_WINNT=0x600 -D_SCL_SECURE_NO_WARNINGS -D_CRT_SECURE_NO_WARNINGS -D_WINSOCK_DEPRECATED_NO_WARNINGS)
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diff --git a/include/grpc/impl/codegen/port_platform.h b/include/grpc/impl/codegen/port_platform.h
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index 4f213ff..55ecd9d 100644
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--- a/include/grpc/impl/codegen/port_platform.h
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+++ b/include/grpc/impl/codegen/port_platform.h
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@@ -168,7 +168,9 @@
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#endif /* _LP64 */
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#ifdef __GLIBC__
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#define GPR_POSIX_CRASH_HANDLER 1
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+#if defined(HAVE_PTHREAD_SETNAME_NP)
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#define GPR_LINUX_PTHREAD_NAME 1
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+#endif /* HAVE_PTHREAD_SETNAME_NP */
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#include <linux/version.h>
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#else /* musl libc */
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#define GPR_MUSL_LIBC_COMPAT 1
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--
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2.26.63
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