Building Sentry: Symbolicator
Blog post from Sentry
Sentry has built a service called Symbolicator to handle native crashes at scale, which processes native crash reports and minidumps for high-quality reports. Native code analysis is challenging due to the lack of runtime, making it harder to extract stack traces or context information. To overcome this, Sentry uses unwind information, which indicates the size and contents of function frame records, allowing debuggers to read a stack trace from threads' call stack memory region. Debug files contain tree-like structures explaining compilation units, including types, functions, parameters, variables, scopes, and more. Sentry displays debug identifiers on the Issue Details page and in metadata of all debug files. Symbol servers provide a convenient way to retrieve debug information, and Sentry has implemented multiple schemas for addressing debug information files on symbol servers. The standalone service, Symbolicator, can process native stack traces and minidumps, uses symbol servers to download debug files, and comes with scope isolation built-in for multi-tenant use cases.
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