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Add support for breaking into debugger for Linux
Use Linux-specific /proc/$PID/status file to check whether we're being debugged and a generic raise(SIGTRAP) to actually break into the debugger.
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@ -35,6 +35,10 @@ namespace Catch{
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#endif
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#endif
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#endif
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#endif
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#elif defined(CATCH_PLATFORM_LINUX)
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#include <signal.h>
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#define CATCH_BREAK_INTO_DEBUGGER() if( Catch::isDebuggerActive() ) { raise(SIGTRAP); }
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#elif defined(_MSC_VER)
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#elif defined(_MSC_VER)
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#define CATCH_BREAK_INTO_DEBUGGER() if( Catch::isDebuggerActive() ) { __debugbreak(); }
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#define CATCH_BREAK_INTO_DEBUGGER() if( Catch::isDebuggerActive() ) { __debugbreak(); }
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#elif defined(__MINGW32__)
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#elif defined(__MINGW32__)
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@ -61,6 +61,33 @@
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}
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}
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} // namespace Catch
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} // namespace Catch
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#elif defined(CATCH_PLATFORM_LINUX)
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#include <fstream>
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#include <string>
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namespace Catch{
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// The standard POSIX way of detecting a debugger is to attempt to
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// ptrace() the process, but this needs to be done from a child and not
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// this process itself to still allow attaching to this process later
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// if wanted, so is rather heavy. Under Linux we have the PID of the
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// "debugger" (which doesn't need to be gdb, of course, it could also
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// be strace, for example) in /proc/$PID/status, so just get it from
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// there instead.
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bool isDebuggerActive(){
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std::ifstream in("/proc/self/status");
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for( std::string line; std::getline(in, line); ) {
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static const int PREFIX_LEN = 11;
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if( line.compare(0, PREFIX_LEN, "TracerPid:\t") == 0 ) {
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// We're traced if the PID is not 0 and no other PID starts
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// with 0 digit, so it's enough to check for just a single
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// character.
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return line.length() > PREFIX_LEN && line[PREFIX_LEN] != '0';
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}
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}
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return false;
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}
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} // namespace Catch
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#elif defined(_MSC_VER)
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#elif defined(_MSC_VER)
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extern "C" __declspec(dllimport) int __stdcall IsDebuggerPresent();
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extern "C" __declspec(dllimport) int __stdcall IsDebuggerPresent();
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namespace Catch {
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namespace Catch {
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@ -15,6 +15,8 @@
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#define CATCH_PLATFORM_IPHONE
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#define CATCH_PLATFORM_IPHONE
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#elif defined(WIN32) || defined(__WIN32__) || defined(_WIN32) || defined(_MSC_VER)
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#elif defined(WIN32) || defined(__WIN32__) || defined(_WIN32) || defined(_MSC_VER)
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#define CATCH_PLATFORM_WINDOWS
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#define CATCH_PLATFORM_WINDOWS
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#elif defined(linux) || defined(__linux) || defined(__linux__)
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#define CATCH_PLATFORM_LINUX
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#endif
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#endif
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#endif // TWOBLUECUBES_CATCH_PLATFORM_H_INCLUDED
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#endif // TWOBLUECUBES_CATCH_PLATFORM_H_INCLUDED
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