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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)
*
* Provides a BreakIntoDebugger() macro for Windows and Mac (so far)
*/
#ifndef TWOBLUECUBES_CATCH_DEBUGGER_HPP_INCLUDED
#define TWOBLUECUBES_CATCH_DEBUGGER_HPP_INCLUDED
#include <iostream>
#if defined(__MAC_OS_X_VERSION_MIN_REQUIRED)
#define CATCH_PLATFORM_MAC
#elif defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
#define CATCH_PLATFORM_IPHONE
#elif defined(__WIN32__) || defined(_WIN32) || defined(_MSC_VER)
#define CATCH_PLATFORM_WINDOWS
#endif
#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).
inline bool isDebuggerActive(){
int junk;
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);
junk = sysctl(mib, sizeof(mib) / sizeof(*mib), &info, &size, NULL, 0);
assert(junk == 0);
// We're being debugged if the P_TRACED flag is set.
return ( (info.kp_proc.p_flag & P_TRACED) != 0 );
}
}
// The following code snippet taken from:
// http://cocoawithlove.com/2008/03/break-into-debugger.html
#ifdef DEBUG
#if defined(__ppc64__) || defined(__ppc__)
#define BreakIntoDebugger() \
if( Catch::isDebuggerActive() ) { \
__asm__("li r0, 20\nsc\nnop\nli r0, 37\nli r4, 2\nsc\nnop\n" \
: : : "memory","r0","r3","r4" ); \
}
#else
#define BreakIntoDebugger() if( Catch::isDebuggerActive() ) {__asm__("int $3\n" : : );}
#endif
#else
inline void BreakIntoDebugger(){}
#endif
#elif defined(_MSC_VER)
extern "C" __declspec(dllimport) int __stdcall IsDebuggerPresent();
#define BreakIntoDebugger() if (IsDebuggerPresent() ) { __debugbreak(); }
inline bool isDebuggerActive() {
return IsDebuggerPresent() != 0;
}
#elif defined(__MINGW32__)
extern "C" __declspec(dllimport) int __stdcall IsDebuggerPresent();
extern "C" __declspec(dllimport) void __stdcall DebugBreak();
#define BreakIntoDebugger() if (IsDebuggerPresent() ) { DebugBreak(); }
inline bool isDebuggerActive() {
return IsDebuggerPresent() != 0;
}
#else
inline void BreakIntoDebugger(){}
inline bool isDebuggerActive() { return false; }
#endif
#ifdef CATCH_PLATFORM_WINDOWS
extern "C" __declspec(dllimport) void __stdcall OutputDebugStringA( const char* );
inline void writeToDebugConsole( const std::string& text ) {
::OutputDebugStringA( text.c_str() );
}
#else
inline void writeToDebugConsole( const std::string& text ) {
// !TBD: Need a version for Mac/ XCode and other IDEs
std::cout << text;
}
#endif // CATCH_PLATFORM_WINDOWS
#endif // TWOBLUECUBES_CATCH_DEBUGGER_HPP_INCLUDED
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