// Copyright Epic Games, Inc. All Rights Reserved.

#include <zencore/zencore.h>

#if ZEN_PLATFORM_WINDOWS
#	include <zencore/windows.h>
#endif

#if ZEN_PLATFORM_LINUX
#	include <pthread.h>
#endif

#include <zencore/blake3.h>
#include <zencore/compactbinary.h>
#include <zencore/compactbinarybuilder.h>
#include <zencore/compactbinarypackage.h>
#include <zencore/compositebuffer.h>
#include <zencore/compress.h>
#include <zencore/iobuffer.h>
#include <zencore/memory.h>
#include <zencore/refcount.h>
#include <zencore/sha1.h>
#include <zencore/snapshot_manifest.h>
#include <zencore/stats.h>
#include <zencore/stream.h>
#include <zencore/string.h>
#include <zencore/thread.h>
#include <zencore/timer.h>
#include <zencore/uid.h>

namespace zen {

//////////////////////////////////////////////////////////////////////////

bool
IsPointerToStack(const void* ptr)
{
#if ZEN_PLATFORM_WINDOWS
	ULONG_PTR low, high;
	GetCurrentThreadStackLimits(&low, &high);

	const uintptr_t intPtr = reinterpret_cast<uintptr_t>(ptr);

	return (intPtr - low) < (high - low);
#elif ZEN_PLATFORM_LINUX
	pthread_t self = pthread_self();

	pthread_attr_t attr;
	pthread_getattr_np(self, &attr);

	void*  low;
	size_t size;
	pthread_attr_getstack(&attr, &low, &size);

	return (uintptr_t(ptr) - uintptr_t(low)) < uintptr_t(size);
#elif 0
#endif
}

bool
IsDebuggerPresent()
{
#if ZEN_PLATFORM_WINDOWS
	return ::IsDebuggerPresent();
#else
	return false;
#endif
}

bool
IsInteractiveSession()
{
#if ZEN_PLATFORM_WINDOWS
	DWORD dwSessionId = 0;
	if (ProcessIdToSessionId(GetCurrentProcessId(), &dwSessionId))
	{
		return (dwSessionId != 0);
	}

	return false;
#else
	// TODO: figure out what makes sense here
	return true;
#endif
}

//////////////////////////////////////////////////////////////////////////

static int	s_ApplicationExitCode = 0;
static bool s_ApplicationExitRequested;

bool
IsApplicationExitRequested()
{
	return s_ApplicationExitRequested;
}

void
RequestApplicationExit(int ExitCode)
{
	s_ApplicationExitCode	   = ExitCode;
	s_ApplicationExitRequested = true;
}

#if ZEN_WITH_TESTS
void
zencore_forcelinktests()
{
	zen::blake3_forcelink();
	zen::compositebuffer_forcelink();
	zen::compress_forcelink();
	zen::intmath_forcelink();
	zen::iobuffer_forcelink();
	zen::memory_forcelink();
	zen::refcount_forcelink();
	zen::sha1_forcelink();
	zen::snapshotmanifest_forcelink();
	zen::stats_forcelink();
	zen::stream_forcelink();
	zen::string_forcelink();
	zen::thread_forcelink();
	zen::timer_forcelink();
	zen::uid_forcelink();
	zen::uson_forcelink();
	zen::usonbuilder_forcelink();
	zen::usonpackage_forcelink();
}
#endif

}  // namespace zen