Merge lworld

Author: Vicente Romero

.github/workflows/build-alpine-linux.yml

@@ -59,7 +59,7 @@ on:
 jobs:
   build-linux:
     name: build
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     container:
       image: alpine:3.20
 

.github/workflows/build-cross-compile.yml

@@ -48,49 +48,49 @@ on:
 jobs:
   build-cross-compile:
     name: build
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     strategy:
       fail-fast: false
       matrix:
         target-cpu:
           - aarch64
-          - arm
-          - s390x
-          - ppc64le
-          - riscv64
+          # - arm
+          # - s390x
+          # - ppc64le
+          # - riscv64
         include:
           - target-cpu: aarch64
             gnu-arch: aarch64
             debian-arch: arm64
             debian-repository: https://httpredir.debian.org/debian/
             debian-version: trixie
             tolerate-sysroot-errors: false
-          - target-cpu: arm
-            gnu-arch: arm
-            debian-arch: armhf
-            debian-repository: https://httpredir.debian.org/debian/
-            debian-version: trixie
-            tolerate-sysroot-errors: false
-            gnu-abi: eabihf
-          - target-cpu: s390x
-            gnu-arch: s390x
-            debian-arch: s390x
-            debian-repository: https://httpredir.debian.org/debian/
-            debian-version: trixie
-            tolerate-sysroot-errors: false
-          - target-cpu: ppc64le
-            gnu-arch: powerpc64le
-            debian-arch: ppc64el
-            debian-repository: https://httpredir.debian.org/debian/
-            debian-version: trixie
-            tolerate-sysroot-errors: false
-          - target-cpu: riscv64
-            gnu-arch: riscv64
-            debian-arch: riscv64
-            debian-repository: https://httpredir.debian.org/debian/
-            debian-version: trixie
-            tolerate-sysroot-errors: false
+          # - target-cpu: arm
+          #   gnu-arch: arm
+          #   debian-arch: armhf
+          #   debian-repository: https://httpredir.debian.org/debian/
+          #   debian-version: trixie
+          #   tolerate-sysroot-errors: false
+          #   gnu-abi: eabihf
+          # - target-cpu: s390x
+          #   gnu-arch: s390x
+          #   debian-arch: s390x
+          #   debian-repository: https://httpredir.debian.org/debian/
+          #   debian-version: trixie
+          #   tolerate-sysroot-errors: false
+          # - target-cpu: ppc64le
+          #   gnu-arch: powerpc64le
+          #   debian-arch: ppc64el
+          #   debian-repository: https://httpredir.debian.org/debian/
+          #   debian-version: trixie
+          #   tolerate-sysroot-errors: false
+          # - target-cpu: riscv64
+          #   gnu-arch: riscv64
+          #   debian-arch: riscv64
+          #   debian-repository: https://httpredir.debian.org/debian/
+          #   debian-version: trixie
+          #   tolerate-sysroot-errors: false
 
     steps:
       - name: 'Checkout the JDK source'

.github/workflows/build-linux.yml

@@ -75,7 +75,7 @@ on:
 jobs:
   build-linux:
     name: build
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     strategy:
       fail-fast: false
@@ -115,9 +115,21 @@ jobs:
           if [[ '${{ inputs.apt-architecture }}' != '' ]]; then
             sudo dpkg --add-architecture ${{ inputs.apt-architecture }}
           fi
-          sudo apt-get update
-          sudo apt-get install --only-upgrade apt
-          sudo apt-get install gcc-${{ inputs.gcc-major-version }}${{ inputs.gcc-package-suffix }} g++-${{ inputs.gcc-major-version }}${{ inputs.gcc-package-suffix }} libxrandr-dev${{ steps.arch.outputs.suffix }} libxtst-dev${{ steps.arch.outputs.suffix }} libcups2-dev${{ steps.arch.outputs.suffix }} libasound2-dev${{ steps.arch.outputs.suffix }} ${{ inputs.apt-extra-packages }}
+          sudo apt update
+          sudo apt install --only-upgrade apt
+          sudo apt install \
+            gcc-${{ inputs.gcc-major-version }}${{ inputs.gcc-package-suffix }} \
+            g++-${{ inputs.gcc-major-version }}${{ inputs.gcc-package-suffix }} \
+            libasound2-dev${{ steps.arch.outputs.suffix }} \
+            libcups2-dev${{ steps.arch.outputs.suffix }} \
+            libfontconfig1-dev${{ steps.arch.outputs.suffix }} \
+            libx11-dev${{ steps.arch.outputs.suffix }} \
+            libxext-dev${{ steps.arch.outputs.suffix }} \
+            libxrandr-dev${{ steps.arch.outputs.suffix }} \
+            libxrender-dev${{ steps.arch.outputs.suffix }} \
+            libxt-dev${{ steps.arch.outputs.suffix }} \
+            libxtst-dev${{ steps.arch.outputs.suffix }} \
+            ${{ inputs.apt-extra-packages }}
           sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-${{ inputs.gcc-major-version }} 100 --slave /usr/bin/g++ g++ /usr/bin/g++-${{ inputs.gcc-major-version }}
 
       - name: 'Configure'
@@ -131,6 +143,7 @@ jobs:
           --with-gtest=${{ steps.gtest.outputs.path }}
           --with-zlib=system
           --with-jmod-compress=zip-1
+          --disable-jvm-feature-shenandoahgc
           ${{ inputs.extra-conf-options }} ${{ inputs.configure-arguments }} || (
           echo "Dumping config.log:" &&
           cat config.log &&

.github/workflows/build-macos.yml

@@ -110,6 +110,7 @@ jobs:
           --with-gtest=${{ steps.gtest.outputs.path }}
           --with-zlib=system
           --with-jmod-compress=zip-1
+          --disable-jvm-feature-shenandoahgc
           ${{ inputs.extra-conf-options }} ${{ inputs.configure-arguments }} || (
           echo "Dumping config.log:" &&
           cat config.log &&

.github/workflows/build-windows.yml

@@ -134,6 +134,7 @@ jobs:
           --with-gtest=${{ steps.gtest.outputs.path }}
           --with-msvc-toolset-version=${{ inputs.msvc-toolset-version }}
           --with-jmod-compress=zip-1
+          --disable-jvm-feature-shenandoahgc
           ${{ inputs.extra-conf-options }} ${{ inputs.configure-arguments }} || (
           echo "Dumping config.log:" &&
           cat config.log &&

.github/workflows/main.yml

@@ -57,7 +57,7 @@ jobs:
 
   prepare:
     name: 'Prepare the run'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     env:
       # List of platforms to exclude by default
       EXCLUDED_PLATFORMS: 'alpine-linux-x64'
@@ -216,20 +216,20 @@ jobs:
       dry-run: ${{ needs.prepare.outputs.dry-run == 'true' }}
     if: needs.prepare.outputs.linux-x64-variants == 'true'
 
-  build-linux-x64-hs-zero:
-    name: linux-x64-hs-zero
-    needs: prepare
-    uses: ./.github/workflows/build-linux.yml
-    with:
-      platform: linux-x64
-      make-target: 'hotspot'
-      debug-levels: '[ "debug" ]'
-      gcc-major-version: '10'
-      extra-conf-options: '--with-jvm-variants=zero --disable-precompiled-headers'
-      configure-arguments: ${{ github.event.inputs.configure-arguments }}
-      make-arguments: ${{ github.event.inputs.make-arguments }}
-      dry-run: ${{ needs.prepare.outputs.dry-run == 'true' }}
-    if: needs.prepare.outputs.linux-x64-variants == 'true'
+  # build-linux-x64-hs-zero:
+  #   name: linux-x64-hs-zero
+  #   needs: prepare
+  #   uses: ./.github/workflows/build-linux.yml
+  #   with:
+  #     platform: linux-x64
+  #     make-target: 'hotspot'
+  #     debug-levels: '[ "debug" ]'
+  #     gcc-major-version: '10'
+  #     extra-conf-options: '--with-jvm-variants=zero --disable-precompiled-headers'
+  #     configure-arguments: ${{ github.event.inputs.configure-arguments }}
+  #     make-arguments: ${{ github.event.inputs.make-arguments }}
+  #     dry-run: ${{ needs.prepare.outputs.dry-run == 'true' }}
+  #   if: needs.prepare.outputs.linux-x64-variants == 'true'
 
   build-linux-x64-hs-minimal:
     name: linux-x64-hs-minimal
@@ -405,7 +405,7 @@ jobs:
     with:
       platform: linux-x64
       bootjdk-platform: linux-x64
-      runs-on: ubuntu-22.04
+      runs-on: ubuntu-24.04
       dry-run: ${{ needs.prepare.outputs.dry-run == 'true' }}
       debug-suffix: -debug
 
@@ -419,7 +419,7 @@ jobs:
     with:
       platform: linux-x64
       bootjdk-platform: linux-x64
-      runs-on: ubuntu-22.04
+      runs-on: ubuntu-24.04
       dry-run: ${{ needs.prepare.outputs.dry-run == 'true' }}
       static-suffix: "-static"
 

bin/generate-symbol-data.sh

@@ -38,7 +38,7 @@
 #   directory.
 # - open a terminal program and run these commands:
 #     cd "${JDK_CHECKOUT}"/src/jdk.compiler/share/data/symbols
-#     bash ../../../../../make/scripts/generate-symbol-data.sh "${JDK_N_INSTALL}"
+#     bash ../../../../../bin/generate-symbol-data.sh "${JDK_N_INSTALL}"
 # - this command will generate or update data for "--release N" into the ${JDK_CHECKOUT}/src/jdk.compiler/share/data/symbols
 #   directory, updating all registration necessary. If the goal was to update the data, and there are no
 #   new or changed files in the ${JDK_CHECKOUT}/src/jdk.compiler/share/data/symbols directory after running this script,

doc/building.html

@@ -541,6 +541,11 @@ <h3 id="macos">macOS</h3>
 this.</p>
 <p>It is recommended that you use at least macOS 14 and Xcode 15.4, but
 earlier versions may also work.</p>
+<p>Starting with Xcode 26, introduced in macOS 26, the Metal toolchain
+no longer comes bundled with Xcode, so it needs to be installed
+separately. This can either be done via the Xcode's Settings/Components
+UI, or in the command line calling
+<code>xcodebuild -downloadComponent metalToolchain</code>.</p>
 <p>The standard macOS environment contains the basic tooling needed to
 build, but for external libraries a package manager is recommended. The
 JDK uses <a href="https://brew.sh/">homebrew</a> in the examples, but

doc/building.md

@@ -352,6 +352,11 @@ on some strategies to deal with this.
 It is recommended that you use at least macOS 14 and Xcode 15.4, but
 earlier versions may also work.
 
+Starting with Xcode 26, introduced in macOS 26, the Metal toolchain no longer
+comes bundled with Xcode, so it needs to be installed separately. This can
+either be done via the Xcode's Settings/Components UI, or in the command line
+calling `xcodebuild -downloadComponent metalToolchain`.
+
 The standard macOS environment contains the basic tooling needed to build, but
 for external libraries a package manager is recommended. The JDK uses
 [homebrew](https://brew.sh/) in the examples, but feel free to use whatever

doc/hotspot-style.html

@@ -1037,8 +1037,8 @@ <h3 id="variable-templates-and-inline-variables">Variable Templates and
 <p>Some of the approaches used in HotSpot to avoid dynamic
 initialization include:</p>
 <ul>
-<li><p>Use the <code>Deferred&lt;T&gt;</code> class template. Add a call
-to its initialization function at an appropriate place during VM
+<li><p>Use the <code>DeferredStatic&lt;T&gt;</code> class template. Add
+a call to its initialization function at an appropriate place during VM
 initialization. The underlying object is never destroyed.</p></li>
 <li><p>For objects of class type, use a variable whose value is a
 pointer to the class, initialized to <code>nullptr</code>. Provide an