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/*
* Created by Phil on 27/12/2010.
* Copyright 2010 Two Blue Cubes Ltd. All rights reserved.
*
* Distributed under the Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*
*/
#ifndef TWOBLUECUBES_CATCH_DEBUGGER_HPP_INCLUDED
#define TWOBLUECUBES_CATCH_DEBUGGER_HPP_INCLUDED
#include "catch_debugger.h"
#include "catch_errno_guard.hpp"
#ifdef CATCH_PLATFORM_MAC
#include <assert.h>
#include <stdbool.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/sysctl.h>
namespace Catch{
// The following function is taken directly from the following technical note:
// http://developer.apple.com/library/mac/#qa/qa2004/qa1361.html
// Returns true if the current process is being debugged (either
// running under the debugger or has a debugger attached post facto).
bool isDebuggerActive(){
int mib[4];
struct kinfo_proc info;
size_t size;
// Initialize the flags so that, if sysctl fails for some bizarre
// reason, we get a predictable result.
info.kp_proc.p_flag = 0;
// Initialize mib, which tells sysctl the info we want, in this case
// we're looking for information about a specific process ID.
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PID;
mib[3] = getpid();
// Call sysctl.
size = sizeof(info);
if( sysctl(mib, sizeof(mib) / sizeof(*mib), &info, &size, CATCH_NULL, 0) != 0 ) {
Catch::cerr() << "\n** Call to sysctl failed - unable to determine if debugger is active **\n" << std::endl;
return false;
}
// We're being debugged if the P_TRACED flag is set.
return ( (info.kp_proc.p_flag & P_TRACED) != 0 );
}
} // namespace Catch
#elif defined(CATCH_PLATFORM_LINUX)
#include <fstream>
#include <string>
namespace Catch{
// The standard POSIX way of detecting a debugger is to attempt to
// ptrace() the process, but this needs to be done from a child and not
// this process itself to still allow attaching to this process later
// if wanted, so is rather heavy. Under Linux we have the PID of the
// "debugger" (which doesn't need to be gdb, of course, it could also
// be strace, for example) in /proc/$PID/status, so just get it from
// there instead.
bool isDebuggerActive(){
// Libstdc++ has a bug, where std::ifstream sets errno to 0
// This way our users can properly assert over errno values
ErrnoGuard guard;
std::ifstream in("/proc/self/status");
for( std::string line; std::getline(in, line); ) {
static const int PREFIX_LEN = 11;
if( line.compare(0, PREFIX_LEN, "TracerPid:\t") == 0 ) {
// We're traced if the PID is not 0 and no other PID starts
// with 0 digit, so it's enough to check for just a single
// character.
return line.length() > PREFIX_LEN && line[PREFIX_LEN] != '0';
}
}
return false;
}
} // namespace Catch
#elif defined(_MSC_VER)
extern "C" __declspec(dllimport) int __stdcall IsDebuggerPresent();
namespace Catch {
bool isDebuggerActive() {
return IsDebuggerPresent() != 0;
}
}
#elif defined(__MINGW32__)
extern "C" __declspec(dllimport) int __stdcall IsDebuggerPresent();
namespace Catch {
bool isDebuggerActive() {
return IsDebuggerPresent() != 0;
}
}
#else
namespace Catch {
inline bool isDebuggerActive() { return false; }
}
#endif // Platform
#ifdef CATCH_PLATFORM_WINDOWS
#include "catch_windows_h_proxy.h"
namespace Catch {
void writeToDebugConsole( std::string const& text ) {
::OutputDebugStringA( text.c_str() );
}
}
#else
namespace Catch {
void writeToDebugConsole( std::string const& text ) {
// !TBD: Need a version for Mac/ XCode and other IDEs
Catch::cout() << text;
}
}
#endif // Platform
#endif // TWOBLUECUBES_CATCH_DEBUGGER_HPP_INCLUDED
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