test_common.h
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// This header is included in all the test programs (C and C++) and provides a
// hook for dealing with platform-specifics.
#if defined(_WIN32) || defined(_WIN64)
#ifdef COMPILING_LLDB_TEST_DLL
#define LLDB_TEST_API __declspec(dllexport)
#else
#define LLDB_TEST_API __declspec(dllimport)
#endif
#else
#define LLDB_TEST_API
#endif
#if defined(_WIN32)
#define LLVM_PRETTY_FUNCTION __FUNCSIG__
#else
#define LLVM_PRETTY_FUNCTION LLVM_PRETTY_FUNCTION
#endif
// On some systems (e.g., some versions of linux) it is not possible to attach to a process
// without it giving us special permissions. This defines the lldb_enable_attach macro, which
// should perform any such actions, if needed by the platform. This is a macro instead of a
// function to avoid the need for complex linking of the test programs.
#if defined(__linux__)
#include <sys/prctl.h>
// Android API <= 16 does not have these defined.
#ifndef PR_SET_PTRACER
#define PR_SET_PTRACER 0x59616d61
#endif
#ifndef PR_SET_PTRACER_ANY
#define PR_SET_PTRACER_ANY ((unsigned long)-1)
#endif
// For now we execute on best effort basis. If this fails for some reason, so be it.
#define lldb_enable_attach() \
do \
{ \
const int prctl_result = prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY, 0, 0, 0); \
(void)prctl_result; \
} while (0)
#else // not linux
#define lldb_enable_attach()
#endif