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Diffstat (limited to 'InternalDocs/code_objects.md')
| -rw-r--r-- | InternalDocs/code_objects.md | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/InternalDocs/code_objects.md b/InternalDocs/code_objects.md index d4e28c6..a91a7043 100644 --- a/InternalDocs/code_objects.md +++ b/InternalDocs/code_objects.md @@ -18,6 +18,11 @@ Code objects are typically produced by the bytecode [compiler](compiler.md), although they are often written to disk by one process and read back in by another. The disk version of a code object is serialized using the [marshal](https://docs.python.org/dev/library/marshal.html) protocol. +When a `CodeObject` is created, the function `_PyCode_Quicken()` from +[`Python/specialize.c`](../Python/specialize.c) is called to initialize +the caches of all adaptive instructions. This is required because the +on-disk format is a sequence of bytes, and some of the caches need to be +initialized with 16-bit values. Code objects are nominally immutable. Some fields (including `co_code_adaptive` and fields for runtime |