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JDK-8273229: Update OS detection code to recognize Windows Server 2022 #5347

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JDK-8273229: Update OS detection code to recognize Windows Server 2022 #5347

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JDK-8273229
MBaesken Sep 2, 2021
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MBaesken Sep 2, 2021
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7 src/hotspot/os/windows/os_windows.cpp
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@@ -1866,9 +1866,12 @@ void os::win32::print_windows_version(outputStream* st) {
if (is_workstation) {
st->print("10");
} else {
// distinguish Windows Server 2016 and 2019 by build number
// distinguish Windows Server 2016, 2019 and 2022 by build number
// Windows server 2019 GA 10/2018 build number is 17763
if (build_number > 17762) {
// Windows server 2022 build number is 20348
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@dholmes-ora dholmes-ora Sep 2, 2021

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Perhaps to avoid too much future editing:

// Distinguish Windows Server by build number:
// - 2016 GA 10/2016 build: 14393
// - 2019 GA 11/2018 build: 17763
// - 2022 GA 08/2021 build: 20348

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@MBaesken MBaesken Sep 2, 2021

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Hi David , thanks for your suggestions. I adjusted the comments.

Best regards, Matthias

if (build_number > 20347) {
st->print("Server 2022");
} else if (build_number > 17762) {
st->print("Server 2019");
} else {
st->print("Server 2016");
7 src/java.base/windows/native/libjava/java_props_md.c
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@@ -474,6 +474,8 @@ GetJavaProperties(JNIEnv* env)
* Windows Server 2016 10 0 (!VER_NT_WORKSTATION)
* Windows Server 2019 10 0 (!VER_NT_WORKSTATION)
* where (buildNumber > 17762)
* Windows Server 2022 10 0 (!VER_NT_WORKSTATION)
* where (buildNumber > 20347)
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@dholmes-ora dholmes-ora Sep 2, 2021

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There is a comment at line 392 that you may want to adjust too - perhaps just say "Windows Server 2016+" to avoid the need to keep updating it.

*
* This mapping will presumably be augmented as new Windows
* versions are released.
@@ -549,7 +551,10 @@ GetJavaProperties(JNIEnv* env)
switch (minorVersion) {
case 0:
/* Windows server 2019 GA 10/2018 build number is 17763 */
if (buildNumber > 17762) {
/* Windows server 2022 build number is 20348 */
if (buildNumber > 20347) {
sprops.os_name = "Windows Server 2022";
} else if (buildNumber > 17676) {
sprops.os_name = "Windows Server 2019";
} else {
sprops.os_name = "Windows Server 2016";