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Dynamically obtain the function pointer to IsHungAppWindow

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This commit is contained in:
ζeh Matt 2022-07-14 16:46:31 +03:00
parent 792582af53
commit 100e400fed
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GPG Key ID: 18CE582C71A225B0
1 changed files with 24 additions and 2 deletions
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26
components/crashcatcher/windows_crashmonitor.cpp
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@ -17,7 +17,29 @@
namespace Crash
{
std::unordered_map<HWINEVENTHOOK, CrashMonitor*> CrashMonitor::smEventHookOwners{};
using IsHungAppWindowFn = BOOL(WINAPI*)(HWND hwnd);
// Obtains the pointer to user32.IsHungAppWindow, this function may be removed in the future.
// See: https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-ishungappwindow
static IsHungAppWindowFn getIsHungAppWindow() noexcept
{
static IsHungAppWindowFn isHungAppWindow = nullptr;
static bool isHungAppWindowInitialized = false;
if (isHungAppWindowInitialized)
return isHungAppWindow;
auto user32Handle = LoadLibraryA("user32.dll");
if (user32Handle == nullptr)
return nullptr;
isHungAppWindow = reinterpret_cast<IsHungAppWindowFn>(GetProcAddress(user32Handle, "IsHungAppWindow"));
isHungAppWindowInitialized = true;
return isHungAppWindow;
}
CrashMonitor::CrashMonitor(HANDLE shmHandle)
: mShmHandle(shmHandle)
{
@ -123,8 +145,8 @@ namespace Crash
else
return false;
}
if (IsHungAppWindow)
return IsHungAppWindow(mAppWindowHandle);
if (auto isHungAppWindow = getIsHungAppWindow(); isHungAppWindow != nullptr)
return isHungAppWindow(mAppWindowHandle);
else
{
BOOL debuggerPresent;