General

src/parrot.c
This file is unused.

src/warnings.c
Warning and error reporting.

src/longopt.c
Command-line option parsing.

Interpreter

src/embed.c
The Parrot embedding interface.

src/global_setup.c
Global setup.

src/interpreter.c
src/inter_cb.c
src/inter_create.c
src/inter_misc.c
src/inter_run.c
Parrot Interpreter: Callback Function Handling; Creation and Destruction; Misc functions; Run Ops and Methods.

src/exit.c
Exit Handling.

Registers and Stacks

src/gc/register.c
Register handling routines.

src/stacks.c
src/stack_common.c
Stack handling routines for Parrot. Common stack handling routines for Parrot.

Ops

src/runops_cores.c
Run Loops.

Bytecode

src/packfile/pf_items.c
Parrot Packfile API and utilities.

src/byteorder.c
Byteordering functions.

Data Types

src/datatypes.c
Parrot and native data types functions.

src/hash.c
Hash table.

src/intlist.c
Regex stack handling routines.

src/list.c
List aka array routines.

PMCs

src/pmc.c
The base vtable calling functions.

src/key.c
Base vtable calling functions.

src/sub.c
Subroutines.

src/pmc_freeze.c
Freeze and thaw functionality.

Objects

src/objects.c
Class and object.

Strings

src/string_primitives.c
src/string.c
String Primitives. Parrot Strings.

src/encodings/fixed_8.c
src/encodings/ucs2.c
src/encodings/utf16.c
src/encodings/utf8.c
String encodings

src/charset/ascii.c
src/charset/binary.c
src/charset/iso-8859-1.c
src/charset/unicode.c
String charset

config/gen/platform/win32/misc.c
src/spf_render.c
src/spf_vtable.c
src/utils.c
Miscellaneous, sprintf and utility functions.

Multi-methods

src/mmd.c
Multimethod dispatch for binary opcode functions.

Extensions

src/extend.c
Parrot extension interface.

JIT

src/jit.c
src/jit_debug.c
src/jit_debug_xcoff.c
Parrot's JIT subsystem, with support for stabs files.

Exec

config/gen/platform/generic/exec.c
src/exec_save.c
src/exec_start.c
Parrot's native executable subsystem.

IO

src/io/io.c
src/io/io_buf.c
src/io/io_layers.c
src/io/io_mmap.c
src/io/io_passdown.c
src/io/io_private.h
src/io/io_stdio.c
src/io/io_string.c
src/io/io_unix.c
src/io/io_utf8.c
src/io/io_win32.c
Parrot's layer-based I/O subsystem.

Threads

src/thread.c
Thread handling stuff.

src/tsq.c
Thread-safe queues.

Exceptions

src/exceptions.c
Exceptions.

src/events.c
Event handling stuff.

Memory

src/gc/memory.c
Memory allocation.

src/malloc-trace.c

src/gc/resources.c
src/gc/res_lea.c
Allocate and deallocate tracked resources. Resource allocation using malloc.

src/gc/smallobject.c
Handling Small Object Pools.

src/headers.c
Header management functions.

Garbage Collection

src/gc/dod.c
src/gc/gc_gms.c
src/gc/gc_ims.c
src/gc/memory.c
src/gc/register.c
src/gc/res_lea.c
src/gc/resources.c
src/gc/smallobject.c
Parrot's garbage collection subsystem.

Debugging

compilers/imcc/debug.c
src/pdb.c
compilers/imcc/debug.c. The Parrot debugger.

src/disassemble.c
Parrot disassembler.

src/trace.c
Tracing.

examples/c/test_main.c
A sample test program.