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# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0.
include(CheckSymbolExists)
# Check how the platform supports setting thread name
function(aws_set_thread_name_method target)
if (WINDOWS)
# On Windows we do a runtime check, instead of compile-time check
return()
elseif (APPLE)
# All Apple platforms we support have the same function, so no need for compile-time check.
return()
endif()
list(APPEND CMAKE_REQUIRED_DEFINITIONS -D_GNU_SOURCE)
list(APPEND CMAKE_REQUIRED_LIBRARIES pthread)
# The start of the test program
set(c_source_start "
#define _GNU_SOURCE
#include <pthread.h>
#if defined(__FreeBSD__) || defined(__NETBSD__)
#include <pthread_np.h>
#endif
int main() {
pthread_t thread_id;
")
# The end of the test program
set(c_source_end "}")
# pthread_setname_np() usually takes 2 args
check_c_source_compiles("
${c_source_start}
pthread_setname_np(thread_id, \"asdf\");
${c_source_end}"
PTHREAD_SETNAME_TAKES_2ARGS)
if (PTHREAD_SETNAME_TAKES_2ARGS)
target_compile_definitions(${target} PRIVATE -DAWS_PTHREAD_SETNAME_TAKES_2ARGS)
return()
endif()
# But on NetBSD it takes 3!
check_c_source_compiles("
${c_source_start}
pthread_setname_np(thread_id, \"asdf\", NULL);
${c_source_end}
" PTHREAD_SETNAME_TAKES_3ARGS)
if (PTHREAD_SETNAME_TAKES_3ARGS)
target_compile_definitions(${target} PRIVATE -DAWS_PTHREAD_SETNAME_TAKES_3ARGS)
return()
endif()
# And on many older/weirder platforms it's just not supported
endfunction()
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