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* Demo for mem grow notification

Michael Van Canneyt 4 months ago
parent
a45c779bfc
commit
bd0fdc19f2
7 changed files with 393 additions and 0 deletions
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  1. 0 0
      demo/wasienv/memutils/bulma.min.css
  2. 49 0
      demo/wasienv/memutils/index.html
  3. 92 0
      demo/wasienv/memutils/memtesthost.lpi
  4. 126 0
      demo/wasienv/memutils/memtesthost.lpr
  5. 60 0
      demo/wasienv/memutils/testmem.lpi
  6. 20 0
      demo/wasienv/memutils/testmem.lpr
  7. 46 0
      packages/wasm-utils/src/wasm.pas2js.memutils.pas

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+ 0 - 0
demo/wasienv/memutils/bulma.min.css


+ 49 - 0
demo/wasienv/memutils/index.html
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+
 
+<!doctype html>
 
+<html lang="en">
 
+<head>
 
+  <meta http-equiv="Content-type" content="text/html; charset=utf-8">
 
+  <meta name="viewport" content="width=device-width, initial-scale=1">
 
+  <title>FPC-Webassembly and Pas2JS Demo</title>
 
+  <link href="bulma.min.css" rel="stylesheet">
 
+  <!-- <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/css/bulma.min.css"> -->
 
+  <script src="memtesthost.js"></script>
 
+  <style>
 
+
 
+  .source {
 
+    /* width: 730px; */
 
+    margin: -45px auto;
 
+    font-size: 0.9em;
 
+  }
 
+
 
+  .source-inner {
 
+    display: flex;
 
+    justify-content: space-between;
 
+    align-items: center;
 
+    /* width: 482px; */
 
+  }
 
+  </style>
 
+</head>
 
+<body>
 
+  <div class="section pb-4">
 
+    <h1 class="title is-4">FPC compiled wasm program console output:</h1>
 
+    <div class="box" id="pasjsconsole"></div>
 
+  </div>
 
+  <!-- <hr> -->
 
+  <div class="section">
 
+    <div class="source">
 
+      <div class="source-inner">
 
+        <div>
 
+          <p>Created using &nbsp; <a target="_blank" href="https://wiki.freepascal.org/pas2js">pas2js.</a> </p>
 
+          <p>Pas2JS Sources: &nbsp; <a target="new" href="demowasienv.lpr">Pas2JS Program</a></p>
 
+          <p>Webassembly Sources: &nbsp; <a target="new" href="helloworld.pp">FPC Program</a></p>
 
+        </div>
 
+      </div>
 
+    </div>
 
+  </div>
 
+  <script>
 
+    rtl.showUncaughtExceptions=true;
 
+    rtl.run();
 
+  </script>
 
+</body>
 
+</html>

+ 92 - 0
demo/wasienv/memutils/memtesthost.lpi
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+<?xml version="1.0" encoding="UTF-8"?>
 
+<CONFIG>
 
+  <ProjectOptions>
 
+    <Version Value="12"/>
 
+    <General>
 
+      <Flags>
 
+        <MainUnitHasCreateFormStatements Value="False"/>
 
+        <MainUnitHasTitleStatement Value="False"/>
 
+        <MainUnitHasScaledStatement Value="False"/>
 
+        <Runnable Value="False"/>
 
+      </Flags>
 
+      <SessionStorage Value="InProjectDir"/>
 
+      <Title Value="memtesthost"/>
 
+      <UseAppBundle Value="False"/>
 
+      <ResourceType Value="res"/>
 
+    </General>
 
+    <CustomData Count="2">
 
+      <Item0 Name="MaintainHTML" Value="1"/>
 
+      <Item1 Name="PasJSWebBrowserProject" Value="1"/>
 
+    </CustomData>
 
+    <BuildModes>
 
+      <Item Name="Default" Default="True"/>
 
+    </BuildModes>
 
+    <PublishOptions>
 
+      <Version Value="2"/>
 
+      <UseFileFilters Value="True"/>
 
+    </PublishOptions>
 
+    <RunParams>
 
+      <FormatVersion Value="2"/>
 
+    </RunParams>
 
+    <Units>
 
+      <Unit>
 
+        <Filename Value="memtesthost.lpr"/>
 
+        <IsPartOfProject Value="True"/>
 
+      </Unit>
 
+      <Unit>
 
+        <Filename Value="index.html"/>
 
+        <IsPartOfProject Value="True"/>
 
+        <CustomData Count="1">
 
+          <Item0 Name="PasJSIsProjectHTMLFile" Value="1"/>
 
+        </CustomData>
 
+      </Unit>
 
+      <Unit>
 
+        <Filename Value="../../../packages/wasm-utils/src/wasm.pas2js.memutils.pas"/>
 
+        <IsPartOfProject Value="True"/>
 
+      </Unit>
 
+    </Units>
 
+  </ProjectOptions>
 
+  <CompilerOptions>
 
+    <Version Value="11"/>
 
+    <Target FileExt=".js">
 
+      <Filename Value="memtesthost"/>
 
+    </Target>
 
+    <SearchPaths>
 
+      <IncludeFiles Value="$(ProjOutDir)"/>
 
+      <UnitOutputDirectory Value="js"/>
 
+    </SearchPaths>
 
+    <Parsing>
 
+      <SyntaxOptions>
 
+        <AllowLabel Value="False"/>
 
+        <UseAnsiStrings Value="False"/>
 
+        <CPPInline Value="False"/>
 
+      </SyntaxOptions>
 
+    </Parsing>
 
+    <CodeGeneration>
 
+      <TargetOS Value="browser"/>
 
+    </CodeGeneration>
 
+    <Linking>
 
+      <Debugging>
 
+        <GenerateDebugInfo Value="False"/>
 
+        <UseLineInfoUnit Value="False"/>
 
+      </Debugging>
 
+    </Linking>
 
+    <Other>
 
+      <CustomOptions Value="-Jeutf-8 -Jirtl.js -Jc -Jminclude"/>
 
+      <CompilerPath Value="$(pas2js)"/>
 
+    </Other>
 
+  </CompilerOptions>
 
+  <Debugging>
 
+    <Exceptions>
 
+      <Item>
 
+        <Name Value="EAbort"/>
 
+      </Item>
 
+      <Item>
 
+        <Name Value="ECodetoolError"/>
 
+      </Item>
 
+      <Item>
 
+        <Name Value="EFOpenError"/>
 
+      </Item>
 
+    </Exceptions>
 
+  </Debugging>
 
+</CONFIG>

+ 126 - 0
demo/wasienv/memutils/memtesthost.lpr
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+program memtesthost;
 
+
 
+{$mode objfpc}
 
+
 
+uses
 
+  browserconsole, browserapp, JS, Classes, SysUtils, Web, WebAssembly, types, wasienv, wasm.pas2js.memutils;
 
+
 
+Type
 
+
 
+  { TMyApplication }
 
+
 
+  TMyApplication = class(TBrowserApplication)
 
+  Private
 
+    FWasiEnv: TPas2JSWASIEnvironment;
 
+    FMemUtils : TWasiMemUtils;
 
+    FMemory : TJSWebAssemblyMemory; // Memory of webassembly
 
+    FTable : TJSWebAssemblyTable; // exported functions.
 
+    function CreateWebAssembly(Path: string; ImportObject: TJSObject
 
+      ): TJSPromise;
 
+    procedure DoWrite(Sender: TObject; const aOutput: String);
 
+    procedure HandleMemoryGrow(aPages: Integer);
 
+    function initEnv(aValue: JSValue): JSValue;
 
+    procedure InitWebAssembly;
 
+  Public
 
+    Constructor Create(aOwner : TComponent); override;
 
+    Destructor Destroy; override;
 
+    procedure doRun; override;
 
+  end;
 
+
 
+function TMyApplication.InitEnv(aValue: JSValue): JSValue;
 
+
 
+Var
 
+  Module : TJSInstantiateResult absolute aValue;
 
+  exps : TWASIExports;
 
+
 
+begin
 
+  Result:=True;
 
+  Exps := TWASIExports(TJSObject(Module.Instance.exports_));
 
+  FWasiEnv.Instance:=Module.Instance;
 
+  Exps.Start;
 
+end;
 
+
 
+procedure TMyApplication.DoWrite(Sender: TObject; const aOutput: String);
 
+begin
 
+  Writeln(aOutput);
 
+end;
 
+
 
+procedure TMyApplication.HandleMemoryGrow(aPages: Integer);
 
+begin
 
+  Writeln('Webassembly host: memory has grown with ',aPages,' pages of 64k');
 
+end;
 
+
 
+constructor TMyApplication.Create(aOwner: TComponent);
 
+begin
 
+  inherited Create(aOwner);
 
+  FWasiEnv:=TPas2JSWASIEnvironment.Create;
 
+  FWasiEnv.OnStdErrorWrite:=@DoWrite;
 
+  FWasiEnv.OnStdOutputWrite:=@DoWrite;
 
+  FMemUtils:=TWasiMemUtils.Create(FWasiEnv);
 
+  FMemUtils.OnMemoryGrow:=@HandleMemoryGrow;
 
+end;
 
+
 
+function TMyApplication.CreateWebAssembly(Path: string; ImportObject: TJSObject): TJSPromise;
 
+
 
+begin
 
+  Result:=window.fetch(Path)._then(Function (res : jsValue) : JSValue
 
+    begin
 
+      Result:=TJSResponse(Res).arrayBuffer._then(Function (res2 : jsValue) : JSValue
 
+        begin
 
+          Result:=TJSWebAssembly.instantiate(TJSArrayBuffer(res2),ImportObject);
 
+        end,Nil)
 
+    end,Nil
 
+  );
 
+ end;
 
+
 
+procedure TMyApplication.InitWebAssembly;
 
+
 
+Var
 
+  mDesc : TJSWebAssemblyMemoryDescriptor;
 
+  tDesc: TJSWebAssemblyTableDescriptor;
 
+  ImportObj : TJSObject;
 
+
 
+begin
 
+  //  Setup memory
 
+  mDesc.initial:=256;
 
+  mDesc.maximum:=256;
 
+  FMemory:=TJSWebAssemblyMemory.New(mDesc);
 
+  // Setup table
 
+  tDesc.initial:=0;
 
+  tDesc.maximum:=0;
 
+  tDesc.element:='anyfunc';
 
+  FTable:=TJSWebAssemblyTable.New(tDesc);
 
+  // Setup ImportObject
 
+  ImportObj:=new([
 
+    'js', new([
 
+      'mem', FMemory,
 
+      'tbl', FTable
 
+    ])
 
+  ]);
 
+  FWasiEnv.AddImports(ImportObj);
 
+  CreateWebAssembly('memtest.wasm',ImportObj)._then(@initEnv)
 
+end;
 
+
 
+
 
+destructor TMyApplication.Destroy;
 
+begin
 
+  FreeAndNil(FWasiEnv);
 
+  inherited Destroy;
 
+end;
 
+
 
+procedure TMyApplication.doRun;
 
+
 
+begin
 
+  // Your code here
 
+  Terminate;
 
+  InitWebAssembly;
 
+end;
 
+
 
+var
 
+  Application : TMyApplication;
 
+
 
+begin
 
+  Application:=TMyApplication.Create(nil);
 
+  Application.Initialize;
 
+  Application.Run;
 
+end.

+ 60 - 0
demo/wasienv/memutils/testmem.lpi
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+<?xml version="1.0" encoding="UTF-8"?>
 
+<CONFIG>
 
+  <ProjectOptions>
 
+    <Version Value="12"/>
 
+    <General>
 
+      <Flags>
 
+        <MainUnitHasCreateFormStatements Value="False"/>
 
+        <MainUnitHasTitleStatement Value="False"/>
 
+        <MainUnitHasScaledStatement Value="False"/>
 
+      </Flags>
 
+      <SessionStorage Value="InProjectDir"/>
 
+      <Title Value="testmem"/>
 
+      <UseAppBundle Value="False"/>
 
+      <ResourceType Value="res"/>
 
+    </General>
 
+    <BuildModes>
 
+      <Item Name="Default" Default="True"/>
 
+    </BuildModes>
 
+    <PublishOptions>
 
+      <Version Value="2"/>
 
+      <UseFileFilters Value="True"/>
 
+    </PublishOptions>
 
+    <RunParams>
 
+      <FormatVersion Value="2"/>
 
+    </RunParams>
 
+    <Units>
 
+      <Unit>
 
+        <Filename Value="testmem.lpr"/>
 
+        <IsPartOfProject Value="True"/>
 
+      </Unit>
 
+      <Unit>
 
+        <Filename Value="wasm.memutils.pas"/>
 
+        <IsPartOfProject Value="True"/>
 
+      </Unit>
 
+    </Units>
 
+  </ProjectOptions>
 
+  <CompilerOptions>
 
+    <Version Value="11"/>
 
+    <Target>
 
+      <Filename Value="testmem.wasm"/>
 
+    </Target>
 
+    <SearchPaths>
 
+      <IncludeFiles Value="$(ProjOutDir)"/>
 
+      <UnitOutputDirectory Value="lib/$(TargetCPU)-$(TargetOS)"/>
 
+    </SearchPaths>
 
+  </CompilerOptions>
 
+  <Debugging>
 
+    <Exceptions>
 
+      <Item>
 
+        <Name Value="EAbort"/>
 
+      </Item>
 
+      <Item>
 
+        <Name Value="ECodetoolError"/>
 
+      </Item>
 
+      <Item>
 
+        <Name Value="EFOpenError"/>
 
+      </Item>
 
+    </Exceptions>
 
+  </Debugging>
 
+</CONFIG>

+ 20 - 0
demo/wasienv/memutils/testmem.lpr
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+program testmem;
 
+
 
+uses wasmtypes, webassembly, wasm.http.api, wasm.memutils;
 
+
 
+procedure DoGrow(aPages : longint);
 
+
 
+begin
 
+  writeln('Growing wasm memory with ',aPages,' pages of 64k');
 
+end;
 
+
 
+var
 
+  i : integer;
 
+  p : pointer;
 
+
 
+begin
 
+  MemGrowNotifyCallBack:=@DoGrow;
 
+  for I:=1 to 20 do
 
+    getmem(p,1024*256*i);
 
+end.
 
+

+ 46 - 0
packages/wasm-utils/src/wasm.pas2js.memutils.pas
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+unit wasm.pas2js.memutils;
 
+
 
+{$mode ObjFPC}
 
+
 
+interface
 
+
 
+uses js, wasienv;
 
+
 
+type
 
+
 
+  { TWasiMemUtils }
 
+  TMemoryGrowHandler = reference to procedure(aPages : Integer);
 
+
 
+  TWasiMemUtils = class(TImportExtension)
 
+  private
 
+    FOnMemoryGrow: TMemoryGrowHandler;
 
+  Protected
 
+    procedure MemoryGrowNotification(aPages : integer); virtual;
 
+  Public
 
+    procedure FillImportObject(aObject: TJSObject); override;
 
+    function ImportName: String; override;
 
+    property OnMemoryGrow : TMemoryGrowHandler Read FOnMemoryGrow Write FOnMemoryGrow;
 
+  end;
 
+
 
+implementation
 
+
 
+{ TWasiMemUtils }
 
+
 
+procedure TWasiMemUtils.MemoryGrowNotification(aPages: integer);
 
+begin
 
+  if assigned(OnMemoryGrow) then
 
+    OnMemoryGrow(aPages);
 
+end;
 
+
 
+procedure TWasiMemUtils.FillImportObject(aObject: TJSObject);
 
+begin
 
+  aObject['wasm_memory_grow_notification']:=@MemoryGrowNotification;
 
+end;
 
+
 
+function TWasiMemUtils.ImportName: String;
 
+begin
 
+  Result:='wasmmem';
 
+end;
 
+
 
+end.
 
+

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