Understanding SteamAPI_WriteMiniDump: A Guide for Developers
If you are developing a modern 64-bit title, would you like to explore alternative crash-reporting frameworks like or Sentry , or do you need assistance configuring the Steamworks Developer Backend to review existing crash logs? Share public link
SteamAPI_WriteMiniDump is part of the deprecated Steam Error Reporting feature. When implemented, this system allows Steam to automatically upload minidumps of an application's exceptions, but only after 10 similar exceptions have been thrown, helping to prioritize only the most critical and repetitive failures. The function itself is straightforward in purpose but powerful in effect, providing an immediate automated way for developers to receive a "black box" recording of their game's final moments.
SteamAPI_WriteMiniDump is a built-in Steamworks API function designed to capture the memory state of a game at the exact moment of a crash. It writes a standardized crash report file called a minidump ( .dmp ). Key Characteristics SteamAPI WriteMiniDump
// Initialization SetUnhandledExceptionFilter(MyCustomCrashHandler);
: Central processing unit (CPU) instruction pointers and data addresses at the literal breakpoint.
: Usually the exception code (like 0xC0000005 for an Access Violation) provided by the OS. The function itself is straightforward in purpose but
CrashContext ctx = levelId, px, py, pz, GetLastConsoleLines() ; SteamAPI_WriteMiniDump(pep, path, (const char*)&ctx);
Within the Steamworks SDK, Valve provides a specific function to handle these catastrophic failures: SteamAPI_WriteMiniDump .
: This parameter accepts the application's Build ID. Steam automatically assigns a unique Build ID to every uploaded build to the Steam backend. By passing this ID into the minidump file, Steam ensures that when the crash report is uploaded and analyzed later, it can automatically retrieve the correct symbols ( .pdb files) associated with that specific build. Within the Steamworks SDK
The values held in CPU registers at the time of failure.
The string is often seen in crash logs , console outputs , or error reports generated by games or applications using the Steamworks SDK.
: The specific underlying error code thrown by Windows Structured Exception Handling (SEH). Common codes include 0xC0000005 for Access Violations or 0xC0000094 for Integer Division by Zero.
Valve provides the ISteamClient::WriteMiniDump method (via steam_api.h ). The correct signature: