wip 80k example

Cargo.toml

@@ -17,8 +17,17 @@ crate-type = ["staticlib", "cdylib", "rlib"]
 [build-dependencies]
 cbindgen = "0.28.0"
 
-[dependencies]
-servicepoint = { features = ["all_compressions"], git = "https://git.berlin.ccc.de/servicepoint/servicepoint/", branch = "next" }
+[dependencies.servicepoint]
+package = "servicepoint"
+version = "0.13.2"
+default-features = false
+features = ["protocol_udp"]
+git = "https://git.berlin.ccc.de/servicepoint/servicepoint/"
+branch = "next"
+
+[features]
+full = ["servicepoint/all_compressions", "servicepoint/default"]
+default = ["full"]
 
 [lints.rust]
 missing-docs = "warn"
@@ -26,3 +35,11 @@ unsafe_op_in_unsafe_fn = "warn"
 
 [package.metadata.docs.rs]
 all-features = true
+
+[profile.size-optimized]
+inherits = "release"
+opt-level = 'z'     # Optimize for size
+lto = true          # Enable link-time optimization
+codegen-units = 1   # Reduce number of codegen units to increase optimizations
+panic = 'abort'     # Abort on panic
+strip = true        # Strip symbols from binary

cbindgen.toml

@@ -26,7 +26,7 @@ sort_by = "Name"
 parse_deps = false
 
 [parse.expand]
-all_features = true
+features = ["full"]
 
 [export]
 include = []

examples/lang_c/Makefile

@@ -1,7 +1,47 @@
 CC := gcc
+CARGO := rustup run nightly cargo
 
 THIS_DIR := $(dir $(realpath $(lastword $(MAKEFILE_LIST))))
 REPO_ROOT := $(THIS_DIR)/../../
+RUST_TARGET_DIR := $(REPO_ROOT)/target/x86_64-unknown-linux-musl/size-optimized
+
+RUSTFLAGS := -Zlocation-detail=none \
+	-Zfmt-debug=none \
+	-C linker=musl-gcc \
+	-C link-arg=-s \
+	-C link-arg=--gc-sections \
+	-C link-arg=-z,norelro \
+	-C link-arg=--hash-style=gnu \
+	--crate-type=staticlib \
+	-C panic=abort
+
+CARGOFLAGS := --manifest-path=$(REPO_ROOT)/Cargo.toml \
+	--profile=size-optimized \
+	--no-default-features \
+	--target=x86_64-unknown-linux-musl \
+	-Zbuild-std="core,std,alloc,proc_macro,panic_abort" \
+	-Zbuild-std-features="panic_immediate_abort" \
+
+CCFLAGS := -static -Os \
+	-ffunction-sections -fdata-sections \
+	-fwrapv -fomit-frame-pointer -fno-stack-protector\
+	-fwhole-program \
+	-nodefaultlibs -lservicepoint_binding_c -lc \
+	-Wl,--gc-sections \
+	-fno-unroll-loops \
+	-fno-unwind-tables -fno-asynchronous-unwind-tables \
+	-fmerge-all-constants \
+	-Wl,-z,norelro \
+	-Wl,--hash-style=gnu \
+	-fvisibility=hidden \
+	-Bsymbolic \
+	-Wl,--exclude-libs,ALL \
+	-fno-ident \
+	#-fuse-ld=gold \
+	-fno-exceptions
+	#-Wl,--icf=all \
+
+export SERVICEPOINT_HEADER_OUT := $(THIS_DIR)/include
 
 build: out/lang_c
 
@@ -15,20 +55,19 @@ run: out/lang_c
 
 PHONY: build clean dependencies run
 
-out/lang_c: dependencies src/main.c
+out/lang_c_unstripped: dependencies src/main.c
 	mkdir -p out || true
 	${CC} src/main.c \
-		-I include \
-		-L $(REPO_ROOT)/target/release \
-		-Wl,-Bstatic -lservicepoint_binding_c \
-		-Wl,-Bdynamic -llzma \
-		-o out/lang_c
+		-I $(SERVICEPOINT_HEADER_OUT) \
+		-L $(RUST_TARGET_DIR)\
+		$(CCFLAGS) \
+		-o out/lang_c_unstripped
+out/lang_c: out/lang_c_unstripped
+	strip -s -R .comment -R .gnu.version --strip-unneeded out/lang_c_unstripped -o out/lang_c
+#strip -S --strip-unneeded --remove-section=.note.gnu.gold-version --remove-section=.comment --remove-section=.note --remove-section=.note.gnu.build-id --remove-section=.note.ABI-tag
 
 dependencies: FORCE
 	mkdir -p include || true
 	# generate servicepoint header and binary to link against
-	SERVICEPOINT_HEADER_OUT=$(THIS_DIR)/include cargo build \
-		--manifest-path=$(REPO_ROOT)/Cargo.toml \
-		--release
-
+	${CARGO} rustc $(CARGOFLAGS) -- $(RUSTFLAGS)
 FORCE: ;

examples/lang_c/include/servicepoint.h

@@ -168,6 +168,19 @@ typedef struct SPCharGrid SPCharGrid;
  */
 typedef struct SPCommand SPCommand;
 
+/**
+ * A connection to the display.
+ *
+ * # Examples
+ *
+ * ```C
+ * CConnection connection = sp_connection_open("172.23.42.29:2342");
+ * if (connection != NULL)
+ *     sp_connection_send_command(connection, sp_command_clear());
+ * ```
+ */
+typedef struct SPConnection SPConnection;
+
 /**
  * A C-wrapper for grid containing codepage 437 characters.
  *
@@ -189,19 +202,6 @@ typedef struct SPCp437Grid SPCp437Grid;
  */
 typedef struct SPPacket SPPacket;
 
-/**
- * A connection to the display.
- *
- * # Examples
- *
- * ```C
- * CConnection connection = sp_connection_open("172.23.42.29:2342");
- * if (connection != NULL)
- *     sp_connection_send_command(connection, sp_command_clear());
- * ```
- */
-typedef struct SPUdpConnection SPUdpConnection;
-
 /**
  * Represents a span of memory (`&mut [u8]` ) as a struct usable by C code.
  *
@@ -290,7 +290,7 @@ void sp_bitmap_fill(SPBitmap *bitmap, bool value);
  *
  * [SPCommand]: [crate::SPCommand]
  */
-void sp_bitmap_free(SPBitmap **bitmap);
+void sp_bitmap_free(SPBitmap *bitmap);
 
 /**
  * Gets the current value at the specified position in the [SPBitmap].
@@ -1456,7 +1456,7 @@ SPCommand *sp_command_utf8_data(size_t x,
                                 SPCharGrid *grid);
 
 /**
- * Closes and deallocates a [SPUdpConnection].
+ * Closes and deallocates a [SPConnection].
  *
  * # Panics
  *
@@ -1466,13 +1466,13 @@ SPCommand *sp_command_utf8_data(size_t x,
  *
  * The caller has to make sure that:
  *
- * - `connection` points to a valid [SPUdpConnection]
+ * - `connection` points to a valid [SPConnection]
  * - `connection` is not used concurrently or after this call
  */
-void sp_connection_free(SPUdpConnection *connection);
+void sp_connection_free(SPConnection *connection);
 
 /**
- * Creates a new instance of [SPUdpConnection].
+ * Creates a new instance of [SPConnection].
  *
  * returns: NULL if connection fails, or connected instance
  *
@@ -1487,10 +1487,10 @@ void sp_connection_free(SPUdpConnection *connection);
  * - the returned instance is freed in some way, either by using a consuming function or
  *   by explicitly calling `sp_connection_free`.
  */
-SPUdpConnection *sp_connection_open(const char *host);
+SPConnection *sp_connection_open(const char *host);
 
 /**
- * Sends a [SPCommand] to the display using the [SPUdpConnection].
+ * Sends a [SPCommand] to the display using the [SPConnection].
  *
  * The passed `command` gets consumed.
  *
@@ -1505,15 +1505,15 @@ SPUdpConnection *sp_connection_open(const char *host);
  *
  * The caller has to make sure that:
  *
- * - `connection` points to a valid instance of [SPUdpConnection]
+ * - `connection` points to a valid instance of [SPConnection]
  * - `command` points to a valid instance of [SPPacket]
  * - `command` is not used concurrently or after this call
  */
-bool sp_connection_send_command(const SPUdpConnection *connection,
+bool sp_connection_send_command(const SPConnection *connection,
                                 SPCommand *command);
 
 /**
- * Sends a [SPPacket] to the display using the [SPUdpConnection].
+ * Sends a [SPPacket] to the display using the [SPConnection].
  *
  * The passed `packet` gets consumed.
  *
@@ -1528,11 +1528,11 @@ bool sp_connection_send_command(const SPUdpConnection *connection,
  *
  * The caller has to make sure that:
  *
- * - `connection` points to a valid instance of [SPUdpConnection]
+ * - `connection` points to a valid instance of [SPConnection]
  * - `packet` points to a valid instance of [SPPacket]
  * - `packet` is not used concurrently or after this call
  */
-bool sp_connection_send_packet(const SPUdpConnection *connection,
+bool sp_connection_send_packet(const SPConnection *connection,
                                SPPacket *packet);
 
 /**

examples/lang_c/src/main.c

@@ -2,14 +2,20 @@
 #include "servicepoint.h"
 
 int main(void) {
-    SPUdpConnection *connection = sp_connection_open("localhost:2342");
+    SPConnection *connection = sp_connection_open("localhost:2342");
     if (connection == NULL)
         return 1;
 
     SPBitmap *pixels = sp_bitmap_new(SP_PIXEL_WIDTH, SP_PIXEL_HEIGHT);
+    if (pixels == NULL)
+      return 1;
+
     sp_bitmap_fill(pixels, true);
 
     SPCommand *command = sp_command_bitmap_linear_win(0, 0, pixels, SP_COMPRESSION_CODE_UNCOMPRESSED);
+    if (command == NULL)
+      return 1;
+
     sp_connection_send_command(connection, command);
 
     sp_connection_free(connection);

flake.nix

@@ -33,25 +33,35 @@
         { pkgs, system }:
         {
           default = pkgs.mkShell rec {
-            packages = with pkgs; [
+            buildInputs = with pkgs;[
+              xe
+              xz
+              libgcc
+              #glibc.static
+              musl
+              libunwind
+              ];
+
+            nativeBuildInputs = with pkgs;[
               (pkgs.symlinkJoin {
                 name = "rust-toolchain";
                 paths = with pkgs; [
-                  rustc
-                  cargo
-                  rustPlatform.rustcSrc
-                  rustfmt
-                  clippy
+                  #rustc
+                  #cargo
+                  #rustPlatform.rustcSrc
+                  #rustfmt
+                  #clippy
                   cargo-expand
                   cargo-tarpaulin
+                  rustup
                 ];
               })
               gcc
               gnumake
-              xe
-              xz
               pkg-config
+
             ];
+
             RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
           };
         }

src/bitmap.rs

@@ -3,7 +3,7 @@
 //! prefix `sp_bitmap_`
 
 use servicepoint::{DataRef, Grid};
-use std::ptr::{null_mut, NonNull};
+use std::ptr::{NonNull};
 
 use crate::byte_slice::SPByteSlice;
 

src/brightness_grid.rs

@@ -5,7 +5,7 @@
 use crate::SPByteSlice;
 use servicepoint::{DataRef, Grid};
 use std::convert::Into;
-use std::intrinsics::transmute;
+use std::mem::transmute;
 use std::ptr::NonNull;
 
 /// see [servicepoint::Brightness::MIN]