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Initial build of kvvfs in wasm. It loads but cannot find the VFS for as-yet-unknown reasons (sqlite3 shell works fine), and most APIs throw "null function or function signature mismatch" from deep within wasm, presumably as a side effect of the "missing" VFS.
FossilOrigin-Name: 1a2f24a0bdfc6eaae478916b8f4f9c6b63ead9964534fc2951fb4e995ffe61f1
This commit is contained in:
stephan
@ -262,6 +262,7 @@ all: $(sqlite3.js)
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# End main Emscripten-based module build
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########################################################################
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include kvvfs.make
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########################################################################
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# fiddle_remote is the remote destination for the fiddle app. It
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82
ext/wasm/kvvfs.make
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82
ext/wasm/kvvfs.make
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@ -0,0 +1,82 @@
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#!/usr/bin/make
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#^^^^ help emacs select makefile mode
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#
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# This is a sub-make for building a standalone kvvfs-based
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# sqlite3.wasm. It is intended to be "include"d from the main
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# GNUMakefile.
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#
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# Notable potential TODOs:
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#
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# - Trim down a custom sqlite3-api.js for this build. We can elimate
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# the jaccwabyt dependency, for example, because this build won't
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# make use of the VFS bits. Similarly, we can eliminate or replace
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# parts of the OO1 API, or provide a related API which manages
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# singletons of the localStorage/sessionStorage instances.
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#
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########################################################################
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MAKEFILE.kvvfs := $(lastword $(MAKEFILE_LIST))
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kvvfs.js := sqlite3-kvvfs.js
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kvvfs.wasm := sqlite3-kvvfs.wasm
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kvvfs.wasm.c := $(dir.api)/sqlite3-wasm.c
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CLEAN_FILES += $(kvvfs.js) $(kvvfs.wasm)
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########################################################################
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# emcc flags for .c/.o/.wasm.
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kvvfs.flags =
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#kvvfs.flags += -v # _very_ loud but also informative about what it's doing
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########################################################################
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# emcc flags for .c/.o.
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kvvfs.cflags :=
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kvvfs.cflags += -std=c99 -fPIC
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kvvfs.cflags += -I. -I$(dir.top)
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kvvfs.cflags += -DSQLITE_OS_KV=1 $(SQLITE_OPT)
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########################################################################
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# emcc flags specific to building the final .js/.wasm file...
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kvvfs.jsflags := -fPIC
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kvvfs.jsflags += --no-entry
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kvvfs.jsflags += -sENVIRONMENT=web
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kvvfs.jsflags += -sMODULARIZE
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kvvfs.jsflags += -sSTRICT_JS
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kvvfs.jsflags += -sDYNAMIC_EXECUTION=0
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kvvfs.jsflags += -sNO_POLYFILL
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kvvfs.jsflags += -sEXPORTED_FUNCTIONS=@$(dir.api)/EXPORTED_FUNCTIONS.sqlite3-api
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kvvfs.jsflags += -sEXPORTED_RUNTIME_METHODS=FS,wasmMemory,allocateUTF8OnStack
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# wasmMemory ==> for -sIMPORTED_MEMORY
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# allocateUTF8OnStack ==> kvvfs internals
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kvvfs.jsflags += -sUSE_CLOSURE_COMPILER=0
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kvvfs.jsflags += -sIMPORTED_MEMORY
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#kvvfs.jsflags += -sINITIAL_MEMORY=13107200
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#kvvfs.jsflags += -sTOTAL_STACK=4194304
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kvvfs.jsflags += -sEXPORT_NAME=sqlite3InitModule
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kvvfs.jsflags += -sGLOBAL_BASE=4096 # HYPOTHETICALLY keep func table indexes from overlapping w/ heap addr.
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kvvfs.jsflags += --post-js=$(post-js.js)
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#kvvfs.jsflags += -sFILESYSTEM=0 # only for experimentation. sqlite3 needs the FS API
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# Perhaps the kvvfs build doesn't?
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#kvvfs.jsflags += -sABORTING_MALLOC
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kvvfs.jsflags += -sALLOW_MEMORY_GROWTH
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kvvfs.jsflags += -sALLOW_TABLE_GROWTH
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kvvfs.jsflags += -Wno-limited-postlink-optimizations
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# ^^^^^ it likes to warn when we have "limited optimizations" via the -g3 flag.
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kvvfs.jsflags += -sERROR_ON_UNDEFINED_SYMBOLS=0
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kvvfs.jsflags += -sLLD_REPORT_UNDEFINED
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#kvvfs.jsflags += --import-undefined
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kvvfs.jsflags += -sMEMORY64=0
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ifneq (0,$(enable_bigint))
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kvvfs.jsflags += -sWASM_BIGINT
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endif
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$(kvvfs.js): $(MAKEFILE) $(MAKEFILE.kvvfs) $(kvvfs.wasm.c) \
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EXPORTED_FUNCTIONS.api \
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$(post-js.js)
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$(emcc.bin) -o $@ $(emcc_opt) $(emcc.flags) $(kvvfs.cflags) $(kvvfs.jsflags) $(kvvfs.wasm.c)
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chmod -x $(kvvfs.wasm)
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ifneq (,$(wasm-strip))
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$(wasm-strip) $(kvvfs.wasm)
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endif
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@ls -la $@ $(kvvfs.wasm)
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kvvfs: $(kvvfs.js)
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34
ext/wasm/kvvfs1.html
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34
ext/wasm/kvvfs1.html
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@ -0,0 +1,34 @@
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<!doctype html>
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<html lang="en-us">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link rel="shortcut icon" href="data:image/x-icon;," type="image/x-icon">
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<link rel="stylesheet" href="common/emscripten.css"/>
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<link rel="stylesheet" href="common/testing.css"/>
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<title>sqlite3-kvvfs.js tests</title>
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</head>
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<body>
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<header id='titlebar'><span>sqlite3-kvvfs.js tests</span></header>
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<!-- emscripten bits -->
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<figure id="module-spinner">
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<div class="spinner"></div>
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<div class='center'><strong>Initializing app...</strong></div>
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<div class='center'>
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On a slow internet connection this may take a moment. If this
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message displays for "a long time", intialization may have
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failed and the JavaScript console may contain clues as to why.
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</div>
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</figure>
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<div class="emscripten" id="module-status">Downloading...</div>
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<div class="emscripten">
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<progress value="0" max="100" id="module-progress" hidden='1'></progress>
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</div><!-- /emscripten bits -->
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<div>Everything on this page happens in the dev console.</div>
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<hr>
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<div id='test-output'></div>
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<script src="sqlite3-kvvfs.js"></script>
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<script src="common/SqliteTestUtil.js"></script>
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<script src="kvvfs1.js"></script>
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</body>
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</html>
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52
ext/wasm/kvvfs1.js
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52
ext/wasm/kvvfs1.js
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@ -0,0 +1,52 @@
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/*
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2022-09-12
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The author disclaims copyright to this source code. In place of a
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legal notice, here is a blessing:
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* May you do good and not evil.
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* May you find forgiveness for yourself and forgive others.
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* May you share freely, never taking more than you give.
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***********************************************************************
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A basic test script for sqlite3-kvvfs.wasm. This file must be run in
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main JS thread and sqlite3-kvvfs.js must have been loaded before it.
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*/
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'use strict';
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(function(){
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const T = self.SqliteTestUtil;
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const toss = function(...args){throw new Error(args.join(' '))};
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const debug = console.debug.bind(console);
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const eOutput = document.querySelector('#test-output');
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const log = console.log.bind(console)
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const logHtml = function(...args){
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log.apply(this, args);
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const ln = document.createElement('div');
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ln.append(document.createTextNode(args.join(' ')));
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eOutput.append(ln);
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};
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const runTests = function(Module){
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//log("Module",Module);
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const sqlite3 = Module.sqlite3,
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capi = sqlite3.capi,
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oo = sqlite3.oo1,
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wasm = capi.wasm;
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log("Loaded module:",capi.sqlite3_libversion(), capi.sqlite3_sourceid());
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log("Build options:",wasm.compileOptionUsed());
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self.S = sqlite3;
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log("vfs(null) =",capi.sqlite3_vfs_find(null))
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log("vfs('kvvfs') =",capi.sqlite3_vfs_find('kvvfs'))
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//const db = new oo.DB("session");
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log("Init done. Proceed from the dev console.");
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};
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sqlite3InitModule(self.sqlite3TestModule).then(function(theModule){
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console.warn("Installing Emscripten module as global EM for dev console access.");
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self.EM = theModule;
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runTests(theModule);
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});
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})();
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