Avoid intermediate managed string and array allocations for envp and argv in Unix process start#126201

Merged

stephentoub merged 14 commits intomainfrom

copilot/reduce-memory-allocations-unix

Mar 28, 2026

Commits on Mar 27, 2026

Initial plan
Copilot
authored
Avoid intermediate managed string allocations for envp by encoding key=value directly to UTF-8 native buffer

Copilot
and
stephentoub
authored
Address review feedback: pass IDictionary directly, use single native allocation, throw on concurrent modification

Copilot
and
stephentoub
authored
Use single memory block for both pointer array and data in argv and envp allocation

Copilot
and
jkotas
committed
Rename methods to AllocArgvArray/AllocEnvpArray and use checked arithmetic for buffer sizes

Copilot
and
jkotas
committed
Update src/libraries/Common/src/Interop/Unix/System.Native/Interop.ForkAndExecProcess.cs
jkotas
authored
Update src/libraries/Common/src/Interop/Unix/System.Native/Interop.ForkAndExecProcess.cs
jkotas
authored

Commits on Mar 28, 2026