From b2d2265c4a57a3f5056ea3411d472ebf7b08d90b Mon Sep 17 00:00:00 2001
From: Greg Burri <greg.burri@gmail.com>
Date: Wed, 14 Sep 2022 11:21:05 +0200
Subject: [PATCH] All chapter 6 code

---
 ch6-memory/Cargo.lock              | 2019 ++++++++++++++++++++++++++++
 ch6-memory/Cargo.toml              |   24 +
 ch6-memory/src/external_strings.rs |   20 +
 ch6-memory/src/main.rs             |   11 +
 ch6-memory/src/particles.rs        |  161 +++
 ch6-memory/src/virtual_memory.rs   |   50 +
 6 files changed, 2285 insertions(+)
 create mode 100644 ch6-memory/Cargo.lock
 create mode 100644 ch6-memory/Cargo.toml
 create mode 100644 ch6-memory/src/external_strings.rs
 create mode 100644 ch6-memory/src/main.rs
 create mode 100644 ch6-memory/src/particles.rs
 create mode 100644 ch6-memory/src/virtual_memory.rs

diff --git a/ch6-memory/Cargo.lock b/ch6-memory/Cargo.lock
new file mode 100644
index 0000000..1fdef66
--- /dev/null
+++ b/ch6-memory/Cargo.lock
@@ -0,0 +1,2019 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "ab_glyph_rasterizer"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "363b9b88fad3af3be80bc8f762c9a3f9dfe906fd0327b8e92f1c12e5ae1b8bbb"
+
+[[package]]
+name = "adler"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
+
+[[package]]
+name = "andrew"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c4afb09dd642feec8408e33f92f3ffc4052946f6b20f32fb99c1f58cd4fa7cf"
+dependencies = [
+ "bitflags",
+ "rusttype",
+ "walkdir",
+ "xdg",
+ "xml-rs",
+]
+
+[[package]]
+name = "android_glue"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "000444226fcff248f2bc4c7625be32c63caccfecc2723a2b9f78a7487a49c407"
+
+[[package]]
+name = "autocfg"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+
+[[package]]
+name = "bit_field"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dcb6dd1c2376d2e096796e234a70e17e94cc2d5d54ff8ce42b28cef1d0d359a4"
+
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
+[[package]]
+name = "block"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d8c1fef690941d3e7788d328517591fecc684c084084702d6ff1641e993699a"
+
+[[package]]
+name = "bumpalo"
+version = "3.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c1ad822118d20d2c234f427000d5acc36eabe1e29a348c89b63dd60b13f28e5d"
+
+[[package]]
+name = "bytemuck"
+version = "1.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f5715e491b5a1598fc2bef5a606847b5dc1d48ea625bd3c02c00de8285591da"
+
+[[package]]
+name = "byteorder"
+version = "1.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
+
+[[package]]
+name = "calloop"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b036167e76041694579972c28cf4877b4f92da222560ddb49008937b6a6727c"
+dependencies = [
+ "log",
+ "nix 0.18.0",
+]
+
+[[package]]
+name = "cc"
+version = "1.0.73"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2fff2a6927b3bb87f9595d67196a70493f627687a71d87a0d692242c33f58c11"
+
+[[package]]
+name = "cfg-if"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "cgl"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ced0551234e87afee12411d535648dd89d2e7f34c78b753395567aff3d447ff"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "ch6-memory"
+version = "0.1.0"
+dependencies = [
+ "piston2d-graphics",
+ "piston_window",
+ "rand",
+ "windows",
+]
+
+[[package]]
+name = "cocoa"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c54201c07dcf3a5ca33fececb8042aed767ee4bfd5a0235a8ceabcda956044b2"
+dependencies = [
+ "bitflags",
+ "block",
+ "cocoa-foundation",
+ "core-foundation 0.9.3",
+ "core-graphics 0.22.3",
+ "foreign-types",
+ "libc",
+ "objc",
+]
+
+[[package]]
+name = "cocoa"
+version = "0.24.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f63902e9223530efb4e26ccd0cf55ec30d592d3b42e21a28defc42a9586e832"
+dependencies = [
+ "bitflags",
+ "block",
+ "cocoa-foundation",
+ "core-foundation 0.9.3",
+ "core-graphics 0.22.3",
+ "foreign-types",
+ "libc",
+ "objc",
+]
+
+[[package]]
+name = "cocoa-foundation"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ade49b65d560ca58c403a479bb396592b155c0185eada742ee323d1d68d6318"
+dependencies = [
+ "bitflags",
+ "block",
+ "core-foundation 0.9.3",
+ "core-graphics-types",
+ "foreign-types",
+ "libc",
+ "objc",
+]
+
+[[package]]
+name = "color_quant"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
+
+[[package]]
+name = "core-foundation"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57d24c7a13c43e870e37c1556b74555437870a04514f7685f5b354e090567171"
+dependencies = [
+ "core-foundation-sys 0.7.0",
+ "libc",
+]
+
+[[package]]
+name = "core-foundation"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "194a7a9e6de53fa55116934067c844d9d749312f75c6f6d0980e8c252f8c2146"
+dependencies = [
+ "core-foundation-sys 0.8.3",
+ "libc",
+]
+
+[[package]]
+name = "core-foundation-sys"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b3a71ab494c0b5b860bdc8407ae08978052417070c2ced38573a9157ad75b8ac"
+
+[[package]]
+name = "core-foundation-sys"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5827cebf4670468b8772dd191856768aedcb1b0278a04f989f7766351917b9dc"
+
+[[package]]
+name = "core-graphics"
+version = "0.19.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b3889374e6ea6ab25dba90bb5d96202f61108058361f6dc72e8b03e6f8bbe923"
+dependencies = [
+ "bitflags",
+ "core-foundation 0.7.0",
+ "foreign-types",
+ "libc",
+]
+
+[[package]]
+name = "core-graphics"
+version = "0.22.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2581bbab3b8ffc6fcbd550bf46c355135d16e9ff2a6ea032ad6b9bf1d7efe4fb"
+dependencies = [
+ "bitflags",
+ "core-foundation 0.9.3",
+ "core-graphics-types",
+ "foreign-types",
+ "libc",
+]
+
+[[package]]
+name = "core-graphics-types"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a68b68b3446082644c91ac778bf50cd4104bfb002b5a6a7c44cca5a2c70788b"
+dependencies = [
+ "bitflags",
+ "core-foundation 0.9.3",
+ "foreign-types",
+ "libc",
+]
+
+[[package]]
+name = "core-video-sys"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34ecad23610ad9757664d644e369246edde1803fcb43ed72876565098a5d3828"
+dependencies = [
+ "cfg-if 0.1.10",
+ "core-foundation-sys 0.7.0",
+ "core-graphics 0.19.2",
+ "libc",
+ "objc",
+]
+
+[[package]]
+name = "crc32fast"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b540bd8bc810d3885c6ea91e2018302f68baba2129ab3e88f32389ee9370880d"
+dependencies = [
+ "cfg-if 1.0.0",
+]
+
+[[package]]
+name = "crossbeam-channel"
+version = "0.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2dd04ddaf88237dc3b8d8f9a3c1004b506b54b3313403944054d23c0870c521"
+dependencies = [
+ "cfg-if 1.0.0",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-deque"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "715e8152b692bba2d374b53d4875445368fdf21a94751410af607a5ac677d1fc"
+dependencies = [
+ "cfg-if 1.0.0",
+ "crossbeam-epoch",
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-epoch"
+version = "0.9.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "045ebe27666471bb549370b4b0b3e51b07f56325befa4284db65fc89c02511b1"
+dependencies = [
+ "autocfg",
+ "cfg-if 1.0.0",
+ "crossbeam-utils",
+ "memoffset",
+ "once_cell",
+ "scopeguard",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51887d4adc7b564537b15adcfb307936f8075dfcd5f00dde9a9f1d29383682bc"
+dependencies = [
+ "cfg-if 1.0.0",
+ "once_cell",
+]
+
+[[package]]
+name = "cty"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b365fabc795046672053e29c954733ec3b05e4be654ab130fe8f1f94d7051f35"
+
+[[package]]
+name = "darling"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d706e75d87e35569db781a9b5e2416cff1236a47ed380831f959382ccd5f858"
+dependencies = [
+ "darling_core",
+ "darling_macro",
+]
+
+[[package]]
+name = "darling_core"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0c960ae2da4de88a91b2d920c2a7233b400bc33cb28453a2987822d8392519b"
+dependencies = [
+ "fnv",
+ "ident_case",
+ "proc-macro2",
+ "quote",
+ "strsim",
+ "syn",
+]
+
+[[package]]
+name = "darling_macro"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b5a2f4ac4969822c62224815d069952656cadc7084fdca9751e6d959189b72"
+dependencies = [
+ "darling_core",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "derivative"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fcc3dd5e9e9c0b295d6e1e4d811fb6f157d5ffd784b8d202fc62eac8035a770b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "dirs"
+version = "4.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca3aa72a6f96ea37bbc5aa912f6788242832f75369bdfdadcb0e38423f100059"
+dependencies = [
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b1d1d91c932ef41c0f2663aa8b0ca0342d444d842c06914aa0a7e352d0bada6"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "dispatch"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd0c93bb4b0c6d9b77f4435b0ae98c24d17f1c45b2ff844c6151a07256ca923b"
+
+[[package]]
+name = "dlib"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b11f15d1e3268f140f68d390637d5e76d849782d971ae7063e0da69fe9709a76"
+dependencies = [
+ "libloading 0.6.7",
+]
+
+[[package]]
+name = "dlib"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac1b7517328c04c2aa68422fc60a41b92208182142ed04a25879c26c8f878794"
+dependencies = [
+ "libloading 0.7.3",
+]
+
+[[package]]
+name = "downcast-rs"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ea835d29036a4087793836fa931b08837ad5e957da9e23886b29586fb9b6650"
+
+[[package]]
+name = "draw_state"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33cf9537e2d06891448799b96d5a8c8083e0e90522a7fdabe6ebf4f41d79d651"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "either"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90e5c1c8368803113bf0c9584fc495a58b86dc8a29edbf8fe877d21d9507e797"
+
+[[package]]
+name = "exr"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78c26a90d9dd411a3d119d6f55752fb4c134ca243250c32fb9cab7b2561638d2"
+dependencies = [
+ "bit_field",
+ "flume",
+ "half",
+ "lebe",
+ "miniz_oxide",
+ "smallvec",
+ "threadpool",
+]
+
+[[package]]
+name = "flate2"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f82b0f4c27ad9f8bfd1f3208d882da2b09c301bc1c828fd3a00d0216d2fbbff6"
+dependencies = [
+ "crc32fast",
+ "miniz_oxide",
+]
+
+[[package]]
+name = "flume"
+version = "0.10.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1657b4441c3403d9f7b3409e47575237dac27b1b5726df654a6ecbf92f0f7577"
+dependencies = [
+ "futures-core",
+ "futures-sink",
+ "nanorand",
+ "pin-project",
+ "spin",
+]
+
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
+[[package]]
+name = "foreign-types"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
+dependencies = [
+ "foreign-types-shared",
+]
+
+[[package]]
+name = "foreign-types-shared"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
+
+[[package]]
+name = "fuchsia-zircon"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
+dependencies = [
+ "bitflags",
+ "fuchsia-zircon-sys",
+]
+
+[[package]]
+name = "fuchsia-zircon-sys"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
+
+[[package]]
+name = "futures-core"
+version = "0.3.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e5aa3de05362c3fb88de6531e6296e85cde7739cccad4b9dfeeb7f6ebce56bf"
+
+[[package]]
+name = "futures-sink"
+version = "0.3.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "21b20ba5a92e727ba30e72834706623d94ac93a725410b6a6b6fbc1b07f7ba56"
+
+[[package]]
+name = "getrandom"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4eb1a864a501629691edf6c15a593b7a51eebaa1e8468e9ddc623de7c9b58ec6"
+dependencies = [
+ "cfg-if 1.0.0",
+ "js-sys",
+ "libc",
+ "wasi",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "gfx"
+version = "0.18.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01de46f9508a5c259aef105f0bff760ceddca832ea9c87ce03d1923e22ee155b"
+dependencies = [
+ "draw_state",
+ "gfx_core",
+ "log",
+]
+
+[[package]]
+name = "gfx_core"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75fbddaef2e12b4995900539d7209d947b988a3d87ee8737484d049b526e5441"
+dependencies = [
+ "bitflags",
+ "draw_state",
+ "log",
+]
+
+[[package]]
+name = "gfx_device_gl"
+version = "0.16.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "109c385fa380c18888633aa27d1e16cbae518469702a2f69dcb5f52d5378bebc"
+dependencies = [
+ "gfx_core",
+ "gfx_gl",
+ "log",
+]
+
+[[package]]
+name = "gfx_gl"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2d38164670920cfb7491bc0cf6f49f0554bd1c44cdbedc6c78d2bf91691ff5e"
+dependencies = [
+ "gl_generator 0.14.0",
+]
+
+[[package]]
+name = "gif"
+version = "0.11.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3edd93c6756b4dfaf2709eafcc345ba2636565295c198a9cfbf75fa5e3e00b06"
+dependencies = [
+ "color_quant",
+ "weezl",
+]
+
+[[package]]
+name = "gl"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4b411c7e0bfc599e3606412c190e786b5bb48cf00073e1635f9bb6f88fe7d84a"
+dependencies = [
+ "gl_generator 0.13.1",
+]
+
+[[package]]
+name = "gl_generator"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca98bbde17256e02d17336a6bdb5a50f7d0ccacee502e191d3e3d0ec2f96f84a"
+dependencies = [
+ "khronos_api",
+ "log",
+ "xml-rs",
+]
+
+[[package]]
+name = "gl_generator"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a95dfc23a2b4a9a2f5ab41d194f8bfda3cabec42af4e39f08c339eb2a0c124d"
+dependencies = [
+ "khronos_api",
+ "log",
+ "xml-rs",
+]
+
+[[package]]
+name = "glutin"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ae1cbb9176b9151c4ce03f012e3cd1c6c18c4be79edeaeb3d99f5d8085c5fa3"
+dependencies = [
+ "android_glue",
+ "cgl",
+ "cocoa 0.23.0",
+ "core-foundation 0.9.3",
+ "glutin_egl_sys",
+ "glutin_emscripten_sys",
+ "glutin_gles2_sys",
+ "glutin_glx_sys",
+ "glutin_wgl_sys",
+ "lazy_static",
+ "libloading 0.6.7",
+ "log",
+ "objc",
+ "osmesa-sys",
+ "parking_lot",
+ "wayland-client",
+ "wayland-egl",
+ "winapi 0.3.9",
+ "winit",
+]
+
+[[package]]
+name = "glutin_egl_sys"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68900f84b471f31ea1d1355567eb865a2cf446294f06cef8d653ed7bcf5f013d"
+dependencies = [
+ "gl_generator 0.14.0",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "glutin_emscripten_sys"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80de4146df76e8a6c32b03007bc764ff3249dcaeb4f675d68a06caf1bac363f1"
+
+[[package]]
+name = "glutin_gles2_sys"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8094e708b730a7c8a1954f4f8a31880af00eb8a1c5b5bf85d28a0a3c6d69103"
+dependencies = [
+ "gl_generator 0.14.0",
+ "objc",
+]
+
+[[package]]
+name = "glutin_glx_sys"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d93d0575865098580c5b3a423188cd959419912ea60b1e48e8b3b526f6d02468"
+dependencies = [
+ "gl_generator 0.14.0",
+ "x11-dl",
+]
+
+[[package]]
+name = "glutin_wgl_sys"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3da5951a1569dbab865c6f2a863efafff193a93caf05538d193e9e3816d21696"
+dependencies = [
+ "gl_generator 0.14.0",
+]
+
+[[package]]
+name = "half"
+version = "1.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eabb4a44450da02c90444cf74558da904edde8fb4e9035a9a6a4e15445af0bd7"
+
+[[package]]
+name = "hermit-abi"
+version = "0.1.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "ident_case"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
+
+[[package]]
+name = "image"
+version = "0.24.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7e30ca2ecf7666107ff827a8e481de6a132a9b687ed3bb20bb1c144a36c00964"
+dependencies = [
+ "bytemuck",
+ "byteorder",
+ "color_quant",
+ "exr",
+ "gif",
+ "jpeg-decoder",
+ "num-rational",
+ "num-traits",
+ "png",
+ "scoped_threadpool",
+ "tiff",
+]
+
+[[package]]
+name = "instant"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
+dependencies = [
+ "cfg-if 1.0.0",
+]
+
+[[package]]
+name = "interpolation"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3b7357d2bbc5ee92f8e899ab645233e43d21407573cceb37fed8bc3dede2c02"
+
+[[package]]
+name = "iovec"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2b3ea6ff95e175473f8ffe6a7eb7c00d054240321b84c57051175fe3c1e075e"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "jni-sys"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8eaf4bc02d17cbdd7ff4c7438cafcdf7fb9a4613313ad11b4f8fefe7d3fa0130"
+
+[[package]]
+name = "jpeg-decoder"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9478aa10f73e7528198d75109c8be5cd7d15fb530238040148d5f9a22d4c5b3b"
+dependencies = [
+ "rayon",
+]
+
+[[package]]
+name = "js-sys"
+version = "0.3.60"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49409df3e3bf0856b916e2ceaca09ee28e6871cf7d9ce97a692cacfdb2a25a47"
+dependencies = [
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "kernel32-sys"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
+dependencies = [
+ "winapi 0.2.8",
+ "winapi-build",
+]
+
+[[package]]
+name = "khronos_api"
+version = "3.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2db585e1d738fc771bf08a151420d3ed193d9d895a36df7f6f8a9456b911ddc"
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "lazycell"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
+
+[[package]]
+name = "lebe"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "03087c2bad5e1034e8cace5926dec053fb3790248370865f5117a7d0213354c8"
+
+[[package]]
+name = "libc"
+version = "0.2.132"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8371e4e5341c3a96db127eb2465ac681ced4c433e01dd0e938adbef26ba93ba5"
+
+[[package]]
+name = "libloading"
+version = "0.6.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "351a32417a12d5f7e82c368a66781e307834dae04c6ce0cd4456d52989229883"
+dependencies = [
+ "cfg-if 1.0.0",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "libloading"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "efbc0f03f9a775e9f6aed295c6a1ba2253c5757a9e03d55c6caa46a681abcddd"
+dependencies = [
+ "cfg-if 1.0.0",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "lock_api"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f80bf5aacaf25cbfc8210d1cfb718f2bf3b11c4c54e5afe36c236853a8ec390"
+dependencies = [
+ "autocfg",
+ "scopeguard",
+]
+
+[[package]]
+name = "log"
+version = "0.4.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
+dependencies = [
+ "cfg-if 1.0.0",
+]
+
+[[package]]
+name = "malloc_buf"
+version = "0.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62bb907fe88d54d8d9ce32a3cceab4218ed2f6b7d35617cafe9adf84e43919cb"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "memchr"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
+
+[[package]]
+name = "memmap2"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b70ca2a6103ac8b665dc150b142ef0e4e89df640c9e6cf295d189c3caebe5a"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "memoffset"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5aa361d4faea93603064a027415f07bd8e1d5c88c9fbf68bf56a285428fd79ce"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "minimal-lexical"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
+
+[[package]]
+name = "miniz_oxide"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96590ba8f175222643a85693f33d26e9c8a015f599c216509b1a6894af675d34"
+dependencies = [
+ "adler",
+]
+
+[[package]]
+name = "mio"
+version = "0.6.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4afd66f5b91bf2a3bc13fad0e21caedac168ca4c707504e75585648ae80e4cc4"
+dependencies = [
+ "cfg-if 0.1.10",
+ "fuchsia-zircon",
+ "fuchsia-zircon-sys",
+ "iovec",
+ "kernel32-sys",
+ "libc",
+ "log",
+ "miow",
+ "net2",
+ "slab",
+ "winapi 0.2.8",
+]
+
+[[package]]
+name = "mio-extras"
+version = "2.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "52403fe290012ce777c4626790c8951324a2b9e3316b3143779c72b029742f19"
+dependencies = [
+ "lazycell",
+ "log",
+ "mio",
+ "slab",
+]
+
+[[package]]
+name = "miow"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebd808424166322d4a38da87083bfddd3ac4c131334ed55856112eb06d46944d"
+dependencies = [
+ "kernel32-sys",
+ "net2",
+ "winapi 0.2.8",
+ "ws2_32-sys",
+]
+
+[[package]]
+name = "nanorand"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a51313c5820b0b02bd422f4b44776fbf47961755c74ce64afc73bfad10226c3"
+dependencies = [
+ "getrandom",
+]
+
+[[package]]
+name = "ndk"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5eb167c1febed0a496639034d0c76b3b74263636045db5489eee52143c246e73"
+dependencies = [
+ "jni-sys",
+ "ndk-sys",
+ "num_enum",
+ "thiserror",
+]
+
+[[package]]
+name = "ndk-glue"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bdf399b8b7a39c6fb153c4ec32c72fd5fe789df24a647f229c239aa7adb15241"
+dependencies = [
+ "lazy_static",
+ "libc",
+ "log",
+ "ndk",
+ "ndk-macro",
+ "ndk-sys",
+]
+
+[[package]]
+name = "ndk-macro"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05d1c6307dc424d0f65b9b06e94f88248e6305726b14729fd67a5e47b2dc481d"
+dependencies = [
+ "darling",
+ "proc-macro-crate",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "ndk-sys"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1bcdd74c20ad5d95aacd60ef9ba40fdf77f767051040541df557b7a9b2a2121"
+
+[[package]]
+name = "net2"
+version = "0.2.37"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "391630d12b68002ae1e25e8f974306474966550ad82dac6886fb8910c19568ae"
+dependencies = [
+ "cfg-if 0.1.10",
+ "libc",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "nix"
+version = "0.18.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "83450fe6a6142ddd95fb064b746083fc4ef1705fe81f64a64e1d4b39f54a1055"
+dependencies = [
+ "bitflags",
+ "cc",
+ "cfg-if 0.1.10",
+ "libc",
+]
+
+[[package]]
+name = "nix"
+version = "0.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa9b4819da1bc61c0ea48b63b7bc8604064dd43013e7cc325df098d49cd7c18a"
+dependencies = [
+ "bitflags",
+ "cc",
+ "cfg-if 1.0.0",
+ "libc",
+]
+
+[[package]]
+name = "nom"
+version = "7.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8903e5a29a317527874d0402f867152a3d21c908bb0b933e416c65e301d4c36"
+dependencies = [
+ "memchr",
+ "minimal-lexical",
+]
+
+[[package]]
+name = "num-integer"
+version = "0.1.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "225d3389fb3509a24c93f5c29eb6bde2586b98d9f016636dff58d7c6f7569cd9"
+dependencies = [
+ "autocfg",
+ "num-traits",
+]
+
+[[package]]
+name = "num-rational"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0638a1c9d0a3c0914158145bc76cff373a75a627e6ecbfb71cbe6f453a5a19b0"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "578ede34cf02f8924ab9447f50c28075b4d3e5b269972345e7e0372b38c6cdcd"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "num_cpus"
+version = "1.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19e64526ebdee182341572e50e9ad03965aa510cd94427a4549448f285e957a1"
+dependencies = [
+ "hermit-abi",
+ "libc",
+]
+
+[[package]]
+name = "num_enum"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca565a7df06f3d4b485494f25ba05da1435950f4dc263440eda7a6fa9b8e36e4"
+dependencies = [
+ "derivative",
+ "num_enum_derive",
+]
+
+[[package]]
+name = "num_enum_derive"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ffa5a33ddddfee04c0283a7653987d634e880347e96b5b2ed64de07efb59db9d"
+dependencies = [
+ "proc-macro-crate",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "objc"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "915b1b472bc21c53464d6c8461c9d3af805ba1ef837e1cac254428f4a77177b1"
+dependencies = [
+ "malloc_buf",
+]
+
+[[package]]
+name = "once_cell"
+version = "1.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f7254b99e31cad77da24b08ebf628882739a608578bb1bcdfc1f9c21260d7c0"
+
+[[package]]
+name = "osmesa-sys"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88cfece6e95d2e717e0872a7f53a8684712ad13822a7979bc760b9c77ec0013b"
+dependencies = [
+ "shared_library",
+]
+
+[[package]]
+name = "owned_ttf_parser"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f923fb806c46266c02ab4a5b239735c144bdeda724a50ed058e5226f594cde3"
+dependencies = [
+ "ttf-parser",
+]
+
+[[package]]
+name = "parking_lot"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d17b78036a60663b797adeaee46f5c9dfebb86948d1255007a1d6be0271ff99"
+dependencies = [
+ "instant",
+ "lock_api",
+ "parking_lot_core",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d76e8e1493bcac0d2766c42737f34458f1c8c50c0d23bcb24ea953affb273216"
+dependencies = [
+ "cfg-if 1.0.0",
+ "instant",
+ "libc",
+ "redox_syscall",
+ "smallvec",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "percent-encoding"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "478c572c3d73181ff3c2539045f6eb99e5491218eae919370993b890cdbdd98e"
+
+[[package]]
+name = "pin-project"
+version = "1.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ad29a609b6bcd67fee905812e544992d216af9d755757c05ed2d0e15a74c6ecc"
+dependencies = [
+ "pin-project-internal",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "069bdb1e05adc7a8990dce9cc75370895fbe4e3d58b9b73bf1aee56359344a55"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "piston"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f483bc0f9316e80f27c9f083fb20e8ae881a9799ad792cf683a059f3f58d6e6"
+dependencies = [
+ "pistoncore-event_loop",
+ "pistoncore-input",
+ "pistoncore-window",
+]
+
+[[package]]
+name = "piston-float"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ad78bf43dcf80e8f950c92b84f938a0fc7590b7f6866fbcbeca781609c115590"
+
+[[package]]
+name = "piston-gfx_texture"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "189bdf142bf49634b168667b62744098996c708b9b31eff8cd8ad5ce6a0cf0df"
+dependencies = [
+ "gfx",
+ "gfx_core",
+ "image",
+ "piston-texture",
+]
+
+[[package]]
+name = "piston-graphics_api_version"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3b06401e3ea38467d8d85b394557408107e3e56d827f0d00c9b47e902cbd1bed"
+
+[[package]]
+name = "piston-shaders_graphics2d"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a35f4d08d2b6fd7ff02baab63346d4b7d2fdd5ac3f2e091a5128c22c77a489a"
+
+[[package]]
+name = "piston-texture"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62c93564eef40a9920d026697f63d224efd7ac80981fb418fe1dad447c2d9bdd"
+
+[[package]]
+name = "piston-viewport"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61ecaf8ae0d71dd9cdbbd8662b47659621c09430ff3cb880d154858d3b8ac001"
+dependencies = [
+ "piston-float",
+]
+
+[[package]]
+name = "piston2d-gfx_graphics"
+version = "0.76.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4401d4bfcb3012a6007f99f4f2db68a8524c9f1a6d4e96e22d6dc83dd93b02b6"
+dependencies = [
+ "draw_state",
+ "gfx",
+ "piston-gfx_texture",
+ "piston-shaders_graphics2d",
+ "piston2d-graphics",
+ "shader_version",
+]
+
+[[package]]
+name = "piston2d-graphics"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08852ecb6ef0486043d408d790d3abb38d4f6d6c4ee13adfc9e0dcbe9d95dd1d"
+dependencies = [
+ "fnv",
+ "interpolation",
+ "piston-texture",
+ "piston-viewport",
+ "read_color",
+ "rusttype",
+ "vecmath",
+]
+
+[[package]]
+name = "piston_window"
+version = "0.124.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2ac26f53c1726eb60a3e8162cbf295ea31f42d6f3d3a2e2806d07fb540adb602"
+dependencies = [
+ "gfx",
+ "gfx_device_gl",
+ "piston",
+ "piston-texture",
+ "piston2d-gfx_graphics",
+ "piston2d-graphics",
+ "pistoncore-glutin_window",
+ "shader_version",
+]
+
+[[package]]
+name = "pistoncore-event_loop"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41d86b3bf012430bb23694348615e37769aca0e9910539ce93674006aeeb77e6"
+dependencies = [
+ "pistoncore-input",
+ "pistoncore-window",
+ "spin_sleep",
+]
+
+[[package]]
+name = "pistoncore-glutin_window"
+version = "0.70.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2625037feaa575206054a7a10b397739c6c10e81be0ae65858182d6dd906d30"
+dependencies = [
+ "gl",
+ "glutin",
+ "pistoncore-input",
+ "pistoncore-window",
+ "shader_version",
+]
+
+[[package]]
+name = "pistoncore-input"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2977fed6eb16c554fd445a09a50c8a0c250f4c50f752be46a7bd9dcc5ba471f0"
+dependencies = [
+ "bitflags",
+ "piston-viewport",
+ "serde",
+ "serde_derive",
+]
+
+[[package]]
+name = "pistoncore-window"
+version = "0.47.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d62962b4e9cfc13143c77e032302fedc58a8f0f570d30006cdb38ba00a5e50bf"
+dependencies = [
+ "piston-graphics_api_version",
+ "pistoncore-input",
+]
+
+[[package]]
+name = "pkg-config"
+version = "0.3.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1df8c4ec4b0627e53bdf214615ad287367e482558cf84b109250b37464dc03ae"
+
+[[package]]
+name = "png"
+version = "0.17.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f0e7f4c94ec26ff209cee506314212639d6c91b80afb82984819fafce9df01c"
+dependencies = [
+ "bitflags",
+ "crc32fast",
+ "flate2",
+ "miniz_oxide",
+]
+
+[[package]]
+name = "ppv-lite86"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
+
+[[package]]
+name = "proc-macro-crate"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d6ea3c4595b96363c13943497db34af4460fb474a95c43f4446ad341b8c9785"
+dependencies = [
+ "toml",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
+dependencies = [
+ "getrandom",
+]
+
+[[package]]
+name = "raw-window-handle"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e28f55143d0548dad60bb4fbdc835a3d7ac6acc3324506450c5fdd6e42903a76"
+dependencies = [
+ "libc",
+ "raw-window-handle 0.4.3",
+]
+
+[[package]]
+name = "raw-window-handle"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b800beb9b6e7d2df1fe337c9e3d04e3af22a124460fb4c30fcc22c9117cefb41"
+dependencies = [
+ "cty",
+]
+
+[[package]]
+name = "rayon"
+version = "1.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd99e5772ead8baa5215278c9b15bf92087709e9c1b2d1f97cdb5a183c933a7d"
+dependencies = [
+ "autocfg",
+ "crossbeam-deque",
+ "either",
+ "rayon-core",
+]
+
+[[package]]
+name = "rayon-core"
+version = "1.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "258bcdb5ac6dad48491bb2992db6b7cf74878b0384908af124823d118c99683f"
+dependencies = [
+ "crossbeam-channel",
+ "crossbeam-deque",
+ "crossbeam-utils",
+ "num_cpus",
+]
+
+[[package]]
+name = "read_color"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f4c8858baa4ad3c8bcc156ae91a0ffe22b76a3975c40c49b4f04c15c6bce0da"
+
+[[package]]
+name = "redox_syscall"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "redox_users"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b033d837a7cf162d7993aded9304e30a83213c648b6e389db233191f891e5c2b"
+dependencies = [
+ "getrandom",
+ "redox_syscall",
+ "thiserror",
+]
+
+[[package]]
+name = "rusttype"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc7c727aded0be18c5b80c1640eae0ac8e396abf6fa8477d96cb37d18ee5ec59"
+dependencies = [
+ "ab_glyph_rasterizer",
+ "owned_ttf_parser",
+]
+
+[[package]]
+name = "same-file"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502"
+dependencies = [
+ "winapi-util",
+]
+
+[[package]]
+name = "scoped-tls"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea6a9290e3c9cf0f18145ef7ffa62d68ee0bf5fcd651017e586dc7fd5da448c2"
+
+[[package]]
+name = "scoped_threadpool"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d51f5df5af43ab3f1360b429fa5e0152ac5ce8c0bd6485cae490332e96846a8"
+
+[[package]]
+name = "scopeguard"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
+
+[[package]]
+name = "serde"
+version = "1.0.144"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f747710de3dcd43b88c9168773254e809d8ddbdf9653b84e2554ab219f17860"
+
+[[package]]
+name = "serde_derive"
+version = "1.0.144"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94ed3a816fb1d101812f83e789f888322c34e291f894f19590dc310963e87a00"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "shader_version"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dfadbf7574784ee97f062ace17e1008fb5e7f46dd714b7dd46baf6efebd30e26"
+dependencies = [
+ "piston-graphics_api_version",
+]
+
+[[package]]
+name = "shared_library"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a9e7e0f2bfae24d8a5b5a66c5b257a83c7412304311512a0c054cd5e619da11"
+dependencies = [
+ "lazy_static",
+ "libc",
+]
+
+[[package]]
+name = "slab"
+version = "0.4.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4614a76b2a8be0058caa9dbbaf66d988527d86d003c11a94fbd335d7661edcef"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "smallvec"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2fd0db749597d91ff862fd1d55ea87f7855a744a8425a64695b6fca237d1dad1"
+
+[[package]]
+name = "smithay-client-toolkit"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4750c76fd5d3ac95fa3ed80fe667d6a3d8590a960e5b575b98eea93339a80b80"
+dependencies = [
+ "andrew",
+ "bitflags",
+ "calloop",
+ "dlib 0.4.2",
+ "lazy_static",
+ "log",
+ "memmap2",
+ "nix 0.18.0",
+ "wayland-client",
+ "wayland-cursor",
+ "wayland-protocols",
+]
+
+[[package]]
+name = "spin"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f6002a767bff9e83f8eeecf883ecb8011875a21ae8da43bffb817a57e78cc09"
+dependencies = [
+ "lock_api",
+]
+
+[[package]]
+name = "spin_sleep"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cafa7900db085f4354dbc7025e25d7a839a14360ea13b5fc4fd717f2d3b23134"
+dependencies = [
+ "once_cell",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "strsim"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6446ced80d6c486436db5c078dde11a9f73d42b57fb273121e160b84f63d894c"
+
+[[package]]
+name = "syn"
+version = "1.0.99"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "58dbef6ec655055e20b86b15a8cc6d439cca19b667537ac6a1369572d151ab13"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "thiserror"
+version = "1.0.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c53f98874615aea268107765aa1ed8f6116782501d18e53d08b471733bea6c85"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8b463991b4eab2d801e724172285ec4195c650e8ec79b149e6c2a8e6dd3f783"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "threadpool"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d050e60b33d41c19108b32cea32164033a9013fe3b46cbd4457559bfbf77afaa"
+dependencies = [
+ "num_cpus",
+]
+
+[[package]]
+name = "tiff"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7259662e32d1e219321eb309d5f9d898b779769d81b76e762c07c8e5d38fcb65"
+dependencies = [
+ "flate2",
+ "jpeg-decoder",
+ "weezl",
+]
+
+[[package]]
+name = "toml"
+version = "0.5.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8d82e1a7758622a465f8cee077614c73484dac5b836c02ff6a40d5d1010324d7"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "ttf-parser"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3e5d7cd7ab3e47dda6e56542f4bbf3824c15234958c6e1bd6aaa347e93499fdc"
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4f5b37a154999a8f3f98cc23a628d850e154479cd94decf3414696e12e31aaf"
+
+[[package]]
+name = "vecmath"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "956ae1e0d85bca567dee1dcf87fb1ca2e792792f66f87dced8381f99cd91156a"
+dependencies = [
+ "piston-float",
+]
+
+[[package]]
+name = "walkdir"
+version = "2.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "808cf2735cd4b6866113f648b791c6adc5714537bc222d9347bb203386ffda56"
+dependencies = [
+ "same-file",
+ "winapi 0.3.9",
+ "winapi-util",
+]
+
+[[package]]
+name = "wasi"
+version = "0.11.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eaf9f5aceeec8be17c128b2e93e031fb8a4d469bb9c4ae2d7dc1888b26887268"
+dependencies = [
+ "cfg-if 1.0.0",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c8ffb332579b0557b52d268b91feab8df3615f265d5270fec2a8c95b17c1142"
+dependencies = [
+ "bumpalo",
+ "log",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "052be0f94026e6cbc75cdefc9bae13fd6052cdcaf532fa6c45e7ae33a1e6c810"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "07bc0c051dc5f23e307b13285f9d75df86bfdf816c5721e573dec1f9b8aa193c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1c38c045535d93ec4f0b4defec448e4291638ee608530863b1e2ba115d4fff7f"
+
+[[package]]
+name = "wayland-client"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3ab332350e502f159382201394a78e3cc12d0f04db863429260164ea40e0355"
+dependencies = [
+ "bitflags",
+ "downcast-rs",
+ "libc",
+ "nix 0.20.0",
+ "scoped-tls",
+ "wayland-commons",
+ "wayland-scanner",
+ "wayland-sys",
+]
+
+[[package]]
+name = "wayland-commons"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a21817947c7011bbd0a27e11b17b337bfd022e8544b071a2641232047966fbda"
+dependencies = [
+ "nix 0.20.0",
+ "once_cell",
+ "smallvec",
+ "wayland-sys",
+]
+
+[[package]]
+name = "wayland-cursor"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be610084edd1586d45e7bdd275fe345c7c1873598caa464c4fb835dee70fa65a"
+dependencies = [
+ "nix 0.20.0",
+ "wayland-client",
+ "xcursor",
+]
+
+[[package]]
+name = "wayland-egl"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99ba1ab1e18756b23982d36f08856d521d7df45015f404a2d7c4f0b2d2f66956"
+dependencies = [
+ "wayland-client",
+ "wayland-sys",
+]
+
+[[package]]
+name = "wayland-protocols"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "286620ea4d803bacf61fa087a4242ee316693099ee5a140796aaba02b29f861f"
+dependencies = [
+ "bitflags",
+ "wayland-client",
+ "wayland-commons",
+ "wayland-scanner",
+]
+
+[[package]]
+name = "wayland-scanner"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce923eb2deb61de332d1f356ec7b6bf37094dc5573952e1c8936db03b54c03f1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "xml-rs",
+]
+
+[[package]]
+name = "wayland-sys"
+version = "0.28.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d841fca9aed7febf9bed2e9796c49bf58d4152ceda8ac949ebe00868d8f0feb8"
+dependencies = [
+ "dlib 0.5.0",
+ "lazy_static",
+ "pkg-config",
+]
+
+[[package]]
+name = "weezl"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9193164d4de03a926d909d3bc7c30543cecb35400c02114792c2cae20d5e2dbb"
+
+[[package]]
+name = "winapi"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-build"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "windows"
+version = "0.39.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1c4bd0a50ac6020f65184721f758dba47bb9fbc2133df715ec74a237b26794a"
+dependencies = [
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.39.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec7711666096bd4096ffa835238905bb33fb87267910e154b18b44eaabb340f2"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.39.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "763fc57100a5f7042e3057e7e8d9bdd7860d330070251a73d003563a3bb49e1b"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.39.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7bc7cbfe58828921e10a9f446fcaaf649204dcfe6c1ddd712c5eebae6bda1106"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.39.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6868c165637d653ae1e8dc4d82c25d4f97dd6605eaa8d784b5c6e0ab2a252b65"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.39.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e4d40883ae9cae962787ca76ba76390ffa29214667a111db9e0a1ad8377e809"
+
+[[package]]
+name = "winit"
+version = "0.24.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da4eda6fce0eb84bd0a33e3c8794eb902e1033d0a1d5a31bc4f19b1b4bbff597"
+dependencies = [
+ "bitflags",
+ "cocoa 0.24.0",
+ "core-foundation 0.9.3",
+ "core-graphics 0.22.3",
+ "core-video-sys",
+ "dispatch",
+ "instant",
+ "lazy_static",
+ "libc",
+ "log",
+ "mio",
+ "mio-extras",
+ "ndk",
+ "ndk-glue",
+ "ndk-sys",
+ "objc",
+ "parking_lot",
+ "percent-encoding",
+ "raw-window-handle 0.3.4",
+ "smithay-client-toolkit",
+ "wayland-client",
+ "winapi 0.3.9",
+ "x11-dl",
+]
+
+[[package]]
+name = "ws2_32-sys"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
+dependencies = [
+ "winapi 0.2.8",
+ "winapi-build",
+]
+
+[[package]]
+name = "x11-dl"
+version = "2.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c83627bc137605acc00bb399c7b908ef460b621fc37c953db2b09f88c449ea6"
+dependencies = [
+ "lazy_static",
+ "libc",
+ "pkg-config",
+]
+
+[[package]]
+name = "xcursor"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "463705a63313cd4301184381c5e8042f0a7e9b4bb63653f216311d4ae74690b7"
+dependencies = [
+ "nom",
+]
+
+[[package]]
+name = "xdg"
+version = "2.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c4583db5cbd4c4c0303df2d15af80f0539db703fa1c68802d4cbbd2dd0f88f6"
+dependencies = [
+ "dirs",
+]
+
+[[package]]
+name = "xml-rs"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2d7d3948613f75c98fd9328cfdcc45acc4d360655289d0a7d4ec931392200a3"
diff --git a/ch6-memory/Cargo.toml b/ch6-memory/Cargo.toml
new file mode 100644
index 0000000..bf68be8
--- /dev/null
+++ b/ch6-memory/Cargo.toml
@@ -0,0 +1,24 @@
+[package]
+name = "ch6-memory"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+# It seems Piston has been discontinued. 'ggez' seems a better alternative.
+piston_window = "0.124"
+piston2d-graphics = "0.42"
+rand = "0.8"
+
+# It seems the 'winapi' crate as been replaced by 'windows'/'windows-sys' crates.
+# winapi = { version = "0.3", features = ["sysinfoapi", "memoryapi"] }
+[dependencies.windows]
+version = "0.39"
+features = [
+    "Win32_Foundation",
+    "Win32_System_Memory",
+    "Win32_System_Threading",
+    "Win32_System_SystemInformation",
+    "Win32_System_Diagnostics_Debug",
+]
\ No newline at end of file
diff --git a/ch6-memory/src/external_strings.rs b/ch6-memory/src/external_strings.rs
new file mode 100644
index 0000000..c8b4dfa
--- /dev/null
+++ b/ch6-memory/src/external_strings.rs
@@ -0,0 +1,20 @@
+use std::borrow::Cow;
+use std::ffi::CStr;
+use std::os::raw::c_char;
+use std::mem;
+
+static B: [u8; 10] = [99, 97, 114, 114, 121, 116, 111, 119, 101, 108];
+static C: [u8; 11] = [116, 104, 97, 110, 107, 115, 102, 105, 115, 104, 0];
+
+pub fn read_from_external_string_sources() {
+    unsafe {
+        let b_ptr = &B as *const u8 as *mut u8; // Double cast needed. '*const' and '*mut' denote a raw pointer.
+        let b = String::from_raw_parts(b_ptr, 10, 10);
+        let b = mem::ManuallyDrop::new(b); // Avoid 'b' to deallocate a static memory.
+
+        let c_ptr = &C as *const u8 as *const c_char; // Double cast needed.
+        let c = CStr::from_ptr(c_ptr).to_string_lossy();
+
+        println!("b: {}, c: {}", *b, c);
+    }
+}
\ No newline at end of file
diff --git a/ch6-memory/src/main.rs b/ch6-memory/src/main.rs
new file mode 100644
index 0000000..4673317
--- /dev/null
+++ b/ch6-memory/src/main.rs
@@ -0,0 +1,11 @@
+#![cfg_attr(debug_assertions, allow(dead_code, unused_imports))]
+
+mod external_strings;
+mod particles;
+mod virtual_memory;
+
+fn main() {
+    // particles::run(); // Uncomment to run 'particles'.
+    // external_strings::read_from_external_string_sources();
+    virtual_memory::run();
+}
\ No newline at end of file
diff --git a/ch6-memory/src/particles.rs b/ch6-memory/src/particles.rs
new file mode 100644
index 0000000..6c91d41
--- /dev/null
+++ b/ch6-memory/src/particles.rs
@@ -0,0 +1,161 @@
+use graphics::math::{Vec2d, add, mul_scalar};
+
+use piston_window::*;
+
+use rand::prelude::*;
+
+use std::alloc::{GlobalAlloc, System, Layout};
+
+use std::process::exit;
+use std::thread::Thread;
+use std::time::Instant;
+
+#[global_allocator]
+static ALLOCATOR: ReportingAllocator = ReportingAllocator;
+
+struct ReportingAllocator;
+
+unsafe impl GlobalAlloc for ReportingAllocator {
+    unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
+        let start = Instant::now();
+        let ptr = System.alloc(layout);
+        let end = Instant::now();
+        let time_taken = end - start;
+        let bytes_requested = layout.size();
+
+        eprintln!("{}\t{}", bytes_requested, time_taken.as_nanos()); // Uncomment to print all allocations.
+        ptr
+    }
+
+    unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
+        System.dealloc(ptr, layout);
+    }
+}
+
+struct World {
+    current_turn: u64,
+    particles: Vec<Box<Particle>>,
+    height: f64,
+    width: f64,
+    rng: ThreadRng,
+}
+
+struct Particle {
+    height: f64,
+    width: f64,
+    position: Vec2d<f64>,
+    velocity: Vec2d<f64>,
+    acceleration: Vec2d<f64>,
+    color: [f32; 4],
+}
+
+impl Particle {
+    fn new(world: &World) -> Particle {
+        let mut rng = thread_rng();
+        let x = rng.gen_range(0.0..=world.width);
+        let y = world.height;
+        let x_velocity = 0.0;
+        let y_velocity = rng.gen_range(-2.0..0.0);
+        let x_acceleration = 0.0;
+        let y_acceleration = rng.gen_range(0.0..0.15);
+
+        Particle {
+            height: 4.0,
+            width: 4.0,
+            position: [x, y].into(),
+            velocity: [x_velocity, y_velocity].into(),
+            acceleration: [x_acceleration, y_acceleration].into(),
+            color: [1.0, 1.0, 1.0, 0.99],
+        }
+    }
+
+    fn update(&mut self) {
+        self.velocity = add(self.velocity, self.acceleration);
+        self.position = add(self.position, self.velocity);
+        self.acceleration = mul_scalar(self.acceleration, 0.7);
+        self.color[3] *= 0.995;
+    }
+}
+
+impl World {
+    fn new(width: f64, height: f64) -> World {
+        World {
+            current_turn: 0,
+            particles: Vec::<Box<Particle>>::new(),
+            height,
+            width,
+            rng: thread_rng(),
+        }
+    }
+
+    fn add_shapes(&mut self, n: i32) {
+        for _ in 0..n.abs() {
+            let particle = Particle::new(&self);
+            let boxed_particle = Box::new(particle);
+            self.particles.push(boxed_particle);
+        }
+    }
+
+    fn remove_shapes(&mut self, n: i32) {
+        for _ in 0..n.abs() {
+            let mut to_delete = None;
+            let particle_iter = self.particles.iter().enumerate();
+            for (i, particle) in particle_iter {
+                if particle.color[3] < 0.02 {
+                    to_delete = Some(i);
+                }
+                break;
+            }
+
+            if let Some(i) = to_delete {
+                self.particles.remove(i);
+            } else {
+                self.particles.remove(0); // Oldest particle.
+            }
+        }
+    }
+
+    fn update(&mut self) {
+        let n = self.rng.gen_range(-3..=3);
+
+        if n > 0 {
+            self.add_shapes(n);
+        } else {
+            self.remove_shapes(n);
+        }
+
+        self.particles.shrink_to_fit();
+        for shape in &mut self.particles {
+            shape.update();
+        }
+
+        self.current_turn += 1;
+    }
+}
+
+pub fn run() {
+    let (width, height) = (1280.0, 960.9);
+
+    let mut window: PistonWindow = WindowSettings::new("particles", [width, height])
+        .exit_on_esc(true)
+        .build()
+        .expect("Could not create a window.");
+
+    let mut world = World::new(width, height);
+    world.add_shapes(1000);
+
+    while let Some(event) = window.next() {
+        world.update();
+
+        window.draw_2d(
+            &event,
+            |ctx, renderer, _device| {
+                clear([0.15, 0.17, 0.17, 0.9], renderer);
+                for s in &mut world.particles {
+                    let size = [s.position[0], s.position[1], s.width, s.height];
+                    rectangle(s.color, size, ctx.transform, renderer);
+                }
+            }
+        );
+    }
+}
\ No newline at end of file
diff --git a/ch6-memory/src/virtual_memory.rs b/ch6-memory/src/virtual_memory.rs
new file mode 100644
index 0000000..63120a0
--- /dev/null
+++ b/ch6-memory/src/virtual_memory.rs
@@ -0,0 +1,50 @@
+use core::ffi::c_void;
+
+use windows::Win32::{
+    Foundation::HANDLE,
+    System::{
+        SystemInformation::SYSTEM_INFO,
+        Memory::MEMORY_BASIC_INFORMATION as MEMINFO,
+    }
+};
+
+pub fn run() {
+    let this_pid: u32;
+    let this_proc: HANDLE;
+    let min_addr: *mut c_void;
+    let max_addr: *mut c_void;
+    let mut base_addr: *mut c_void;
+    let mut proc_info: SYSTEM_INFO;
+    let mut mem_info: MEMINFO;
+
+    const MEMINFO_SIZE: usize = std::mem::size_of::<MEMINFO>();
+
+    unsafe {
+        base_addr = std::mem::zeroed();
+        proc_info = std::mem::zeroed();
+        mem_info = std::mem::zeroed();
+    }
+
+    unsafe {
+        this_pid = windows::Win32::System::Threading::GetCurrentProcessId();
+        this_proc = windows::Win32::System::Threading::GetCurrentProcess();
+        windows::Win32::System::SystemInformation::GetSystemInfo(&mut proc_info);
+    }
+
+    min_addr = proc_info.lpMinimumApplicationAddress;
+    max_addr = proc_info.lpMaximumApplicationAddress;
+
+    println!("PID: {}", this_pid);
+    println!("pageSize: {}, mumberOfProcessors: {}, processorType: {}", proc_info.dwPageSize, proc_info.dwNumberOfProcessors, proc_info.dwProcessorType);
+    println!("min: {:p}, max: {:p}", min_addr, max_addr);
+
+    loop {
+        let rc: usize = unsafe { windows::Win32::System::Memory::VirtualQueryEx(this_proc, base_addr, &mut mem_info, MEMINFO_SIZE) };
+        if rc == 0 {
+            break;
+        }
+
+        println!("{:#?}", mem_info);
+        base_addr = (base_addr as u64 + mem_info.RegionSize as u64) as *mut c_void;
+    }
+}
\ No newline at end of file
-- 
2.45.2