Merge branch 'upstream-master'

doc/building.html

@@ -819,11 +819,11 @@ <h2 id="running-configure">Running Configure</h2>
 <p>Some command line examples:</p>
 <ul>
 <li><p>Create a 32-bit build for Windows with FreeType2 in
-<code>C:\freetype-i586</code>:
-<code>bash configure --with-freetype=/cygdrive/c/freetype-i586 --with-target-bits=32</code></p></li>
+<code>C:\freetype-i586</code>:</p>
+<pre><code>bash configure --with-freetype=/cygdrive/c/freetype-i586 --with-target-bits=32</code></pre></li>
 <li><p>Create a debug build with the <code>server</code> JVM and DTrace
-enabled:
-<code>bash configure --enable-debug --with-jvm-variants=server --enable-dtrace</code></p></li>
+enabled:</p>
+<pre><code>bash configure --enable-debug --with-jvm-variants=server --enable-dtrace</code></pre></li>
 </ul>
 <h3 id="common-configure-arguments">Common Configure Arguments</h3>
 <p>Here follows some of the most common and important
@@ -1331,14 +1331,12 @@ <h4 id="alsa-1">ALSA</h4>
 <code>libasound2-dev</code> packages for your <em>target</em> system.
 Download them to /tmp.</p></li>
 <li><p>Install the libraries into the cross-compilation toolchain. For
-instance:</p></li>
-</ul>
+instance:</p>
 <pre><code>cd /tools/gcc-linaro-arm-linux-gnueabihf-raspbian-2012.09-20120921_linux/arm-linux-gnueabihf/libc
 dpkg-deb -x /tmp/libasound2_1.0.25-4_armhf.deb .
-dpkg-deb -x /tmp/libasound2-dev_1.0.25-4_armhf.deb .</code></pre>
-<ul>
-<li>If alsa is not properly detected by <code>configure</code>, you can
-point it out by <code>--with-alsa</code>.</li>
+dpkg-deb -x /tmp/libasound2-dev_1.0.25-4_armhf.deb .</code></pre></li>
+<li><p>If alsa is not properly detected by <code>configure</code>, you
+can point it out by <code>--with-alsa</code>.</p></li>
 </ul>
 <h4 id="x11-1">X11</h4>
 <p>You will need X11 libraries suitable for your <em>target</em> system.
@@ -1372,21 +1370,18 @@ <h4 id="x11-1">X11</h4>
 </ul></li>
 <li><p>Install the libraries into the cross-compilation toolchain. For
 instance:</p>
-<pre><code>    cd /tools/gcc-linaro-arm-linux-gnueabihf-raspbian-2012.09-20120921_linux/arm-linux-gnueabihf/libc/usr
-    mkdir X11R6
-    cd X11R6
-    for deb in /tmp/target-x11/*.deb ; do dpkg-deb -x $deb . ; done
-    mv usr/* .
-    cd lib
-    cp arm-linux-gnueabihf/* .
-    ```
-
-You can ignore the following messages. These libraries are not needed to
-successfully complete a full JDK build.</code></pre>
-<p>cp: cannot stat
-<code>arm-linux-gnueabihf/libICE.so': No such file or directory cp: cannot stat</code>arm-linux-gnueabihf/libSM.so':
-No such file or directory cp: cannot stat
-`arm-linux-gnueabihf/libXt.so': No such file or directory ```</p></li>
+<pre><code>cd /tools/gcc-linaro-arm-linux-gnueabihf-raspbian-2012.09-20120921_linux/arm-linux-gnueabihf/libc/usr
+mkdir X11R6
+cd X11R6
+for deb in /tmp/target-x11/*.deb ; do dpkg-deb -x $deb . ; done
+mv usr/* .
+cd lib
+cp arm-linux-gnueabihf/* .</code></pre>
+<p>You can ignore the following messages. These libraries are not needed
+to successfully complete a full JDK build.</p>
+<pre><code>cp: cannot stat `arm-linux-gnueabihf/libICE.so&#39;: No such file or directory
+cp: cannot stat `arm-linux-gnueabihf/libSM.so&#39;: No such file or directory
+cp: cannot stat `arm-linux-gnueabihf/libXt.so&#39;: No such file or directory</code></pre></li>
 <li><p>If the X11 libraries are not properly detected by
 <code>configure</code>, you can point them out by
 <code>--with-x</code>.</p></li>
@@ -1404,17 +1399,41 @@ <h3 id="cross-compiling-with-debian-sysroots">Cross compiling with
 <p>For example, cross-compiling to AArch64 from x86_64 could be done
 like this:</p>
 <ul>
-<li><p>Install cross-compiler on the <em>build</em> system:
-<code>apt install g++-aarch64-linux-gnu gcc-aarch64-linux-gnu</code></p></li>
+<li><p>Install cross-compiler on the <em>build</em> system:</p>
+<pre><code>apt install g++-aarch64-linux-gnu gcc-aarch64-linux-gnu</code></pre></li>
 <li><p>Create chroot on the <em>build</em> system, configuring it for
-<em>target</em> system:
-<code>sudo debootstrap \       --arch=arm64 \       --verbose \       --include=fakeroot,symlinks,build-essential,libx11-dev,libxext-dev,libxrender-dev,libxrandr-dev,libxtst-dev,libxt-dev,libcups2-dev,libfontconfig1-dev,libasound2-dev,libfreetype6-dev,libpng-dev,libffi-dev \       --resolve-deps \       buster \       ~/sysroot-arm64 \       http://httpredir.debian.org/debian/     # If the target architecture is `riscv64`,     # the path should be `debian-ports` instead of `debian`.</code></p></li>
+<em>target</em> system:</p>
+<pre><code>sudo debootstrap \
+  --arch=arm64 \
+  --verbose \
+  --include=fakeroot,symlinks,build-essential,libx11-dev,libxext-dev,libxrender-dev,libxrandr-dev,libxtst-dev,libxt-dev,libcups2-dev,libfontconfig1-dev,libasound2-dev,libfreetype6-dev,libpng-dev,libffi-dev \
+  --resolve-deps \
+  buster \
+  ~/sysroot-arm64 \
+  http://httpredir.debian.org/debian/
+# If the target architecture is `riscv64`,
+# the path should be `debian-ports` instead of `debian`.</code></pre></li>
+<li><p>To create a Ubuntu-based chroot:</p>
+<pre><code>sudo debootstrap \
+  --arch=arm64 \
+  --verbose \
+  --components=main,universe \
+  --include=fakeroot,symlinks,build-essential,libx11-dev,libxext-dev,libxrender-dev,libxrandr-dev,libxtst-dev,libxt-dev,libcups2-dev,libfontconfig1-dev,libasound2-dev,libfreetype6-dev,libpng-dev,libffi-dev \
+  --resolve-deps \
+  jammy \
+  ~/sysroot-arm64 \
+  http://ports.ubuntu.com/ubuntu-ports/
+# symlinks is in the universe repository</code></pre></li>
 <li><p>Make sure the symlinks inside the newly created chroot point to
-proper locations:
-<code>sudo chroot ~/sysroot-arm64 symlinks -cr .</code></p></li>
+proper locations:</p>
+<pre><code>sudo chroot ~/sysroot-arm64 symlinks -cr .</code></pre></li>
 <li><p>Configure and build with newly created chroot as
-sysroot/toolchain-path:
-<code>sh ./configure \       --openjdk-target=aarch64-linux-gnu \       --with-sysroot=~/sysroot-arm64     make images     ls build/linux-aarch64-server-release/</code></p></li>
+sysroot/toolchain-path:</p>
+<pre><code>sh ./configure \
+  --openjdk-target=aarch64-linux-gnu \
+  --with-sysroot=~/sysroot-arm64
+make images
+ls build/linux-aarch64-server-release/</code></pre></li>
 </ul>
 <p>The build does not create new files in that chroot, so it can be
 reused for multiple builds without additional cleanup.</p>
@@ -1566,12 +1585,27 @@ <h3 id="building-for-risc-v">Building for RISC-V</h3>
 placeholder <code>&lt;toolchain-installed-path&gt;</code> shown below is
 the path where you want to install the toolchain.</p>
 <ul>
-<li><p>Install the RISC-V GNU compiler toolchain:
-<code>git clone --recursive https://github.com/riscv-collab/riscv-gnu-toolchain     cd riscv-gnu-toolchain     ./configure --prefix=&lt;toolchain-installed-path&gt;     make linux     export PATH=&lt;toolchain-installed-path&gt;/bin:$PATH</code></p></li>
-<li><p>Cross-compile all the required libraries:
-<code># An example for libffi     git clone https://github.com/libffi/libffi     cd libffi     ./configure --host=riscv64-unknown-linux-gnu --prefix=&lt;toolchain-installed-path&gt;/sysroot/usr     make     make install</code></p></li>
-<li><p>Configure and build OpenJDK:
-<code>bash configure \       --with-boot-jdk=$BOOT_JDK \       --openjdk-target=riscv64-linux-gnu \       --with-sysroot=&lt;toolchain-installed-path&gt;/sysroot \       --with-toolchain-path=&lt;toolchain-installed-path&gt;/bin \       --with-extra-path=&lt;toolchain-installed-path&gt;/bin     make images</code></p></li>
+<li><p>Install the RISC-V GNU compiler toolchain:</p>
+<pre><code>git clone --recursive https://github.com/riscv-collab/riscv-gnu-toolchain
+cd riscv-gnu-toolchain
+./configure --prefix=&lt;toolchain-installed-path&gt;
+make linux
+export PATH=&lt;toolchain-installed-path&gt;/bin:$PATH</code></pre></li>
+<li><p>Cross-compile all the required libraries:</p>
+<pre><code># An example for libffi
+git clone https://github.com/libffi/libffi
+cd libffi
+./configure --host=riscv64-unknown-linux-gnu --prefix=&lt;toolchain-installed-path&gt;/sysroot/usr
+make
+make install</code></pre></li>
+<li><p>Configure and build OpenJDK:</p>
+<pre><code>bash configure \
+  --with-boot-jdk=$BOOT_JDK \
+  --openjdk-target=riscv64-linux-gnu \
+  --with-sysroot=&lt;toolchain-installed-path&gt;/sysroot \
+  --with-toolchain-path=&lt;toolchain-installed-path&gt;/bin \
+  --with-extra-path=&lt;toolchain-installed-path&gt;/bin
+make images</code></pre></li>
 </ul>
 <h3 id="building-for-musl">Building for musl</h3>
 <p>Just like it's possible to cross-compile for a different CPU, it's

doc/building.md

@@ -626,11 +626,13 @@ automatically, it will exit and inform you about the problem.
 Some command line examples:
 
   * Create a 32-bit build for Windows with FreeType2 in `C:\freetype-i586`:
+
     ```
     bash configure --with-freetype=/cygdrive/c/freetype-i586 --with-target-bits=32
     ```
 
   * Create a debug build with the `server` JVM and DTrace enabled:
+
     ```
     bash configure --enable-debug --with-jvm-variants=server --enable-dtrace
     ```
@@ -1100,11 +1102,12 @@ Note that alsa is needed even if you only want to build a headless JDK.
     system. Download them to /tmp.
 
   * Install the libraries into the cross-compilation toolchain. For instance:
-```
-cd /tools/gcc-linaro-arm-linux-gnueabihf-raspbian-2012.09-20120921_linux/arm-linux-gnueabihf/libc
-dpkg-deb -x /tmp/libasound2_1.0.25-4_armhf.deb .
-dpkg-deb -x /tmp/libasound2-dev_1.0.25-4_armhf.deb .
-```
+
+    ```
+    cd /tools/gcc-linaro-arm-linux-gnueabihf-raspbian-2012.09-20120921_linux/arm-linux-gnueabihf/libc
+    dpkg-deb -x /tmp/libasound2_1.0.25-4_armhf.deb .
+    dpkg-deb -x /tmp/libasound2-dev_1.0.25-4_armhf.deb .
+    ```
 
   * If alsa is not properly detected by `configure`, you can point it out by
     `--with-alsa`.
@@ -1140,6 +1143,7 @@ Note that X11 is needed even if you only want to build a headless JDK.
       * libxext-dev
 
   * Install the libraries into the cross-compilation toolchain. For instance:
+
     ```
     cd /tools/gcc-linaro-arm-linux-gnueabihf-raspbian-2012.09-20120921_linux/arm-linux-gnueabihf/libc/usr
     mkdir X11R6
@@ -1173,11 +1177,13 @@ for foreign architectures with native compilation speed.
 For example, cross-compiling to AArch64 from x86_64 could be done like this:
 
   * Install cross-compiler on the *build* system:
+
     ```
     apt install g++-aarch64-linux-gnu gcc-aarch64-linux-gnu
     ```
 
   * Create chroot on the *build* system, configuring it for *target* system:
+
     ```
     sudo debootstrap \
       --arch=arm64 \
@@ -1191,12 +1197,29 @@ For example, cross-compiling to AArch64 from x86_64 could be done like this:
     # the path should be `debian-ports` instead of `debian`.
     ```
 
+  * To create a Ubuntu-based chroot:
+
+    ```
+    sudo debootstrap \
+      --arch=arm64 \
+      --verbose \
+      --components=main,universe \
+      --include=fakeroot,symlinks,build-essential,libx11-dev,libxext-dev,libxrender-dev,libxrandr-dev,libxtst-dev,libxt-dev,libcups2-dev,libfontconfig1-dev,libasound2-dev,libfreetype6-dev,libpng-dev,libffi-dev \
+      --resolve-deps \
+      jammy \
+      ~/sysroot-arm64 \
+      http://ports.ubuntu.com/ubuntu-ports/
+    # symlinks is in the universe repository
+    ```
+
   * Make sure the symlinks inside the newly created chroot point to proper locations:
+
     ```
     sudo chroot ~/sysroot-arm64 symlinks -cr .
     ```
 
   * Configure and build with newly created chroot as sysroot/toolchain-path:
+
     ```
     sh ./configure \
       --openjdk-target=aarch64-linux-gnu \
@@ -1255,6 +1278,7 @@ complicate the building process. The placeholder `<toolchain-installed-path>`
 shown below is the path where you want to install the toolchain.
 
   * Install the RISC-V GNU compiler toolchain:
+
     ```
     git clone --recursive https://github.com/riscv-collab/riscv-gnu-toolchain
     cd riscv-gnu-toolchain
@@ -1264,6 +1288,7 @@ shown below is the path where you want to install the toolchain.
     ```
 
   * Cross-compile all the required libraries:
+
     ```
     # An example for libffi
     git clone https://github.com/libffi/libffi
@@ -1274,6 +1299,7 @@ shown below is the path where you want to install the toolchain.
     ```
 
   * Configure and build OpenJDK:
+
     ```
     bash configure \
       --with-boot-jdk=$BOOT_JDK \

make/RunTestsPrebuilt.gmk

@@ -158,6 +158,10 @@ ifeq ($(UNAME_OS), CYGWIN)
   OPENJDK_TARGET_OS := windows
   OPENJDK_TARGET_OS_TYPE := windows
   OPENJDK_TARGET_OS_ENV := windows.cygwin
+else ifeq ($(UNAME_OS), MINGW64)
+  OPENJDK_TARGET_OS := windows
+  OPENJDK_TARGET_OS_TYPE := windows
+  OPENJDK_TARGET_OS_ENV := windows.msys2
 else
   OPENJDK_TARGET_OS_TYPE:=unix
   ifeq ($(UNAME_OS), Linux)
@@ -170,6 +174,9 @@ else
   OPENJDK_TARGET_OS_ENV := $(OPENJDK_TARGET_OS)
 endif
 
+# Sanity check env detection
+$(info Detected target OS, type and env: [$(OPENJDK_TARGET_OS)] [$(OPENJDK_TARGET_OS_TYPE)] [$(OPENJDK_TARGET_OS_ENV)])
+
 # Assume little endian unless otherwise specified
 OPENJDK_TARGET_CPU_ENDIAN := little
 

src/hotspot/os_cpu/bsd_x86/atomic_bsd_x86.hpp

@@ -153,6 +153,14 @@ inline T Atomic::PlatformCmpxchg<8>::operator()(T volatile* dest,
   return cmpxchg_using_helper<int64_t>(_Atomic_cmpxchg_long, dest, compare_value, exchange_value);
 }
 
+// No direct support for 8-byte xchg; emulate using cmpxchg.
+template<>
+struct Atomic::PlatformXchg<8> : Atomic::XchgUsingCmpxchg<8> {};
+
+// No direct support for 8-byte add; emulate using cmpxchg.
+template<>
+struct Atomic::PlatformAdd<8> : Atomic::AddUsingCmpxchg<8> {};
+
 template<>
 template<typename T>
 inline T Atomic::PlatformLoad<8>::operator()(T const volatile* src) const {

src/hotspot/os_cpu/linux_arm/atomic_linux_arm.hpp

@@ -128,6 +128,13 @@ inline T Atomic::PlatformXchg<4>::operator()(T volatile* dest,
   return xchg_using_helper<int32_t>(ARMAtomicFuncs::_xchg_func, dest, exchange_value);
 }
 
+// No direct support for 8-byte xchg; emulate using cmpxchg.
+template<>
+struct Atomic::PlatformXchg<8> : Atomic::XchgUsingCmpxchg<8> {};
+
+// No direct support for 8-byte add; emulate using cmpxchg.
+template<>
+struct Atomic::PlatformAdd<8> : Atomic::AddUsingCmpxchg<8> {};
 
 // The memory_order parameter is ignored - we always provide the strongest/most-conservative ordering
 

src/hotspot/os_cpu/linux_x86/atomic_linux_x86.hpp

@@ -153,6 +153,14 @@ inline T Atomic::PlatformCmpxchg<8>::operator()(T volatile* dest,
   return cmpxchg_using_helper<int64_t>(_Atomic_cmpxchg_long, dest, compare_value, exchange_value);
 }
 
+// No direct support for 8-byte xchg; emulate using cmpxchg.
+template<>
+struct Atomic::PlatformXchg<8> : Atomic::XchgUsingCmpxchg<8> {};
+
+// No direct support for 8-byte add; emulate using cmpxchg.
+template<>
+struct Atomic::PlatformAdd<8> : Atomic::AddUsingCmpxchg<8> {};
+
 template<>
 template<typename T>
 inline T Atomic::PlatformLoad<8>::operator()(T const volatile* src) const {

src/hotspot/share/gc/g1/g1HeapTransition.cpp

@@ -143,11 +143,11 @@ void G1HeapTransition::print() {
     usage = blk._usage;
     assert(usage._eden_region_count == 0, "Expected no eden regions, but got " SIZE_FORMAT, usage._eden_region_count);
     assert(usage._survivor_region_count == after._survivor_length, "Expected survivors to be " SIZE_FORMAT " but was " SIZE_FORMAT,
-        after._survivor_length, usage._survivor_region_count);
+           after._survivor_length, usage._survivor_region_count);
     assert(usage._old_region_count == after._old_length, "Expected old to be " SIZE_FORMAT " but was " SIZE_FORMAT,
-        after._old_length, usage._old_region_count);
+           after._old_length, usage._old_region_count);
     assert(usage._humongous_region_count == after._humongous_length, "Expected humongous to be " SIZE_FORMAT " but was " SIZE_FORMAT,
-        after._humongous_length, usage._humongous_region_count);
+           after._humongous_length, usage._humongous_region_count);
   }
 
   log_regions("Eden", _before._eden_length, after._eden_length, eden_capacity_length_after_gc,
@@ -157,17 +157,17 @@ void G1HeapTransition::print() {
   log_regions("Survivor", _before._survivor_length, after._survivor_length, survivor_capacity_length_before_gc,
               _before._survivor_length_per_node, after._survivor_length_per_node);
   log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K",
-      usage._survivor_used / K, ((after._survivor_length * HeapRegion::GrainBytes) - usage._survivor_used) / K);
+                      usage._survivor_used / K, ((after._survivor_length * HeapRegion::GrainBytes) - usage._survivor_used) / K);
 
   log_info(gc, heap)("Old regions: " SIZE_FORMAT "->" SIZE_FORMAT,
                      _before._old_length, after._old_length);
   log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K",
-      usage._old_used / K, ((after._old_length * HeapRegion::GrainBytes) - usage._old_used) / K);
+                      usage._old_used / K, ((after._old_length * HeapRegion::GrainBytes) - usage._old_used) / K);
 
   log_info(gc, heap)("Humongous regions: " SIZE_FORMAT "->" SIZE_FORMAT,
                      _before._humongous_length, after._humongous_length);
   log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K",
-      usage._humongous_used / K, ((after._humongous_length * HeapRegion::GrainBytes) - usage._humongous_used) / K);
+                      usage._humongous_used / K, ((after._humongous_length * HeapRegion::GrainBytes) - usage._humongous_used) / K);
 
   MetaspaceUtils::print_metaspace_change(_before._meta_sizes);
 }

src/hotspot/share/gc/g1/g1Policy.cpp

@@ -1099,7 +1099,7 @@ double G1Policy::predict_eden_copy_time_ms(uint count, size_t* bytes_to_copy) co
   if (count == 0) {
     return 0.0;
   }
-  size_t const expected_bytes = _eden_surv_rate_group->accum_surv_rate_pred(count) * HeapRegion::GrainBytes;
+  size_t const expected_bytes = _eden_surv_rate_group->accum_surv_rate_pred(count - 1) * HeapRegion::GrainBytes;
   if (bytes_to_copy != nullptr) {
     *bytes_to_copy = expected_bytes;
   }