6114b51073
compileCWithEmcc now probes/saves .sx-cache/c-<key>.o with the same content key as the native path (source + declared headers + transitive deps + defines/flags/incdirs), keyed by the emcc --version line and the wasm triple so emsdk upgrades and wasm32/64 variants never collide with each other or with native objects. Cache hits hand the linker the cache path directly. objectMagicOk accepts the wasm magic. Verified: warm wasm build of a c-unit drops 1.85s -> 0.61s (emcc -c skipped).
109 lines
5.2 KiB
Zig
109 lines
5.2 KiB
Zig
const std = @import("std");
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const c_import = @import("c_import.zig");
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const SRC = "int f(void) { return 1; }";
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const HDR = "int f(void);";
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const DEP = "#define INNER 1";
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const VER = "19.1.7";
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const none: []const []const u8 = &.{};
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fn baseKey() u64 {
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return c_import.cSourceCacheKey(SRC, &.{HDR}, &.{DEP}, &.{"A=1"}, &.{"-O2"}, &.{"inc"}, VER, "arm64-apple-darwin", "/sdk");
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}
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test "cSourceCacheKey: stable when nothing changes" {
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try std.testing.expectEqual(baseKey(), baseKey());
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}
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test "cSourceCacheKey: source bytes vary the key" {
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const other = c_import.cSourceCacheKey("int f(void) { return 2; }", &.{HDR}, &.{DEP}, &.{"A=1"}, &.{"-O2"}, &.{"inc"}, VER, "arm64-apple-darwin", "/sdk");
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try std.testing.expect(baseKey() != other);
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}
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test "cSourceCacheKey: declared header content varies the key" {
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const other = c_import.cSourceCacheKey(SRC, &.{"int f(void); int g(void);"}, &.{DEP}, &.{"A=1"}, &.{"-O2"}, &.{"inc"}, VER, "arm64-apple-darwin", "/sdk");
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try std.testing.expect(baseKey() != other);
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}
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test "cSourceCacheKey: transitive dep content varies the key" {
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const other = c_import.cSourceCacheKey(SRC, &.{HDR}, &.{"#define INNER 2"}, &.{"A=1"}, &.{"-O2"}, &.{"inc"}, VER, "arm64-apple-darwin", "/sdk");
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try std.testing.expect(baseKey() != other);
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// a header is not a dep (same string, different role)
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const as_header = c_import.cSourceCacheKey(SRC, &.{"X"}, none, none, none, none, VER, null, null);
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const as_dep = c_import.cSourceCacheKey(SRC, none, &.{"X"}, none, none, none, VER, null, null);
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try std.testing.expect(as_header != as_dep);
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}
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test "cSourceCacheKey: defines vary the key (value and order)" {
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const v2 = c_import.cSourceCacheKey(SRC, &.{HDR}, &.{DEP}, &.{"A=2"}, &.{"-O2"}, &.{"inc"}, VER, "arm64-apple-darwin", "/sdk");
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try std.testing.expect(baseKey() != v2);
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const ab = c_import.cSourceCacheKey(SRC, &.{HDR}, &.{DEP}, &.{ "A=1", "B=1" }, &.{"-O2"}, &.{"inc"}, VER, "arm64-apple-darwin", "/sdk");
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const ba = c_import.cSourceCacheKey(SRC, &.{HDR}, &.{DEP}, &.{ "B=1", "A=1" }, &.{"-O2"}, &.{"inc"}, VER, "arm64-apple-darwin", "/sdk");
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try std.testing.expect(ab != ba);
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}
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test "cSourceCacheKey: flags vary the key" {
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const other = c_import.cSourceCacheKey(SRC, &.{HDR}, &.{DEP}, &.{"A=1"}, &.{"-O3"}, &.{"inc"}, VER, "arm64-apple-darwin", "/sdk");
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try std.testing.expect(baseKey() != other);
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}
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test "cSourceCacheKey: a define is not a flag (same string, different role)" {
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const as_define = c_import.cSourceCacheKey(SRC, none, none, &.{"X"}, none, none, VER, null, null);
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const as_flag = c_import.cSourceCacheKey(SRC, none, none, none, &.{"X"}, none, VER, null, null);
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try std.testing.expect(as_define != as_flag);
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}
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test "cSourceCacheKey: include dirs vary the key" {
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const other = c_import.cSourceCacheKey(SRC, &.{HDR}, &.{DEP}, &.{"A=1"}, &.{"-O2"}, &.{"other"}, VER, "arm64-apple-darwin", "/sdk");
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try std.testing.expect(baseKey() != other);
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}
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test "cSourceCacheKey: llvm version varies the key" {
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const other = c_import.cSourceCacheKey(SRC, &.{HDR}, &.{DEP}, &.{"A=1"}, &.{"-O2"}, &.{"inc"}, "20.0.0", "arm64-apple-darwin", "/sdk");
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try std.testing.expect(baseKey() != other);
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}
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test "objectMagicOk: accepts Mach-O and ELF, rejects garbage and truncation" {
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try std.testing.expect(c_import.objectMagicOk(&.{ 0xcf, 0xfa, 0xed, 0xfe, 0x00 })); // Mach-O 64
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try std.testing.expect(c_import.objectMagicOk(&.{ 0xce, 0xfa, 0xed, 0xfe })); // Mach-O 32
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try std.testing.expect(c_import.objectMagicOk(&.{ 0x7f, 'E', 'L', 'F', 0x02 }));
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try std.testing.expect(c_import.objectMagicOk(&.{ 0x00, 'a', 's', 'm', 0x01 })); // wasm
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try std.testing.expect(!c_import.objectMagicOk("not an object file"));
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try std.testing.expect(!c_import.objectMagicOk(&.{ 0xcf, 0xfa, 0xed })); // truncated magic
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try std.testing.expect(!c_import.objectMagicOk(&.{}));
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}
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test "cSourceCacheKey: triple and sysroot vary the key; absent is not empty" {
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const other_triple = c_import.cSourceCacheKey(SRC, &.{HDR}, &.{DEP}, &.{"A=1"}, &.{"-O2"}, &.{"inc"}, VER, "x86_64-apple-darwin", "/sdk");
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try std.testing.expect(baseKey() != other_triple);
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const other_sysroot = c_import.cSourceCacheKey(SRC, &.{HDR}, &.{DEP}, &.{"A=1"}, &.{"-O2"}, &.{"inc"}, VER, "arm64-apple-darwin", "/ndk");
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try std.testing.expect(baseKey() != other_sysroot);
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const absent = c_import.cSourceCacheKey(SRC, none, none, none, none, none, VER, null, null);
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const empty = c_import.cSourceCacheKey(SRC, none, none, none, none, none, VER, "", "");
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try std.testing.expect(absent != empty);
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}
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test "scanQuotedIncludes: quoted forms collected in order, angle and noise skipped" {
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const src =
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\\#include "a.h"
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\\ # include "sub/b.h"
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\\#include <system.h>
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\\#includex "not_an_include.h"
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\\int f(void);
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\\#include ""
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\\#include "c.h"
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;
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var out = std.ArrayList([]const u8).empty;
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try c_import.scanQuotedIncludes(std.testing.allocator, src, &out);
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defer out.deinit(std.testing.allocator);
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try std.testing.expectEqual(@as(usize, 3), out.items.len);
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try std.testing.expectEqualStrings("a.h", out.items[0]);
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try std.testing.expectEqualStrings("sub/b.h", out.items[1]);
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try std.testing.expectEqualStrings("c.h", out.items[2]);
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}
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