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Apple: cache debugger detection

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Also added check if sysctl succeeded
This commit is contained in:
Jake Turner
2022-05-20 13:36:23 +01:00
committed by Baldur Karlsson
parent 1d9be38380
commit 5a722b0efa
1 changed files with 29 additions and 11 deletions
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renderdoc/os/posix/apple/apple_process.cpp
+29 -11
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@@ -163,26 +163,44 @@ void ResumeProcess(pid_t childPid, uint32_t delay)
{
}
void CacheDebuggerPresent()
{
}
// Apple requires that this only be called in debug builds
#define DEBUGGER_DETECTION (DISABLED(RDOC_RELEASE))
// OSUtility::DebuggerPresent is called a lot
// cache the value at startup as an optimisation
#if DEBUGGER_DETECTION
static bool s_debuggerPresent = false;
static bool s_debuggerCached = false;
#endif
// from https://developer.apple.com/library/mac/qa/qa1361/_index.html on how to detect the debugger
bool OSUtility::DebuggerPresent()
void CacheDebuggerPresent()
{
// apple requires that this only be called in debug builds
#if ENABLED(RDOC_RELEASE)
return false;
#else
#if DEBUGGER_DETECTION
int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, getpid()};
kinfo_proc info = {};
size_t size = sizeof(info);
sysctl(mib, ARRAY_COUNT(mib), &info, &size, NULL, 0);
return info.kp_proc.p_flag & P_TRACED;
if(!sysctl(mib, ARRAY_COUNT(mib), &info, &size, NULL, 0))
{
s_debuggerPresent = (info.kp_proc.p_flag & P_TRACED);
s_debuggerCached = true;
}
#endif
}
bool OSUtility::DebuggerPresent()
{
#if DEBUGGER_DETECTION
if(!s_debuggerCached)
CacheDebuggerPresent();
return s_debuggerPresent;
#else
return false;
#endif
}
#undef DEBUGGER_DETECTION
rdcstr Process::GetEnvVariable(const rdcstr &name)
{
const char *val = getenv(name.c_str());