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8258917: NativeMemoryTracking is handled by launcher inconsistenly

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Reviewed-by: zgu
This commit is contained in:
Alex Menkov 2021-01-22 21:33:02 +00:00
parent 7be9113b1c
commit bdc305e1cb
2 changed files with 29 additions and 14 deletions
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27
src/java.base/share/native/libjli/java.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1995, 2020, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1995, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -284,9 +284,8 @@ JLI_Launch(int argc, char ** argv, /* main argc, argv */
jvmpath, sizeof(jvmpath),
jvmcfg, sizeof(jvmcfg));
if (!IsJavaArgs()) {
SetJvmEnvironment(argc,argv);
}
/* Set env. Must be done before LoadJavaVM. */
SetJvmEnvironment(argc, argv);
ifn.CreateJavaVM = 0;
ifn.GetDefaultJavaVMInitArgs = 0;
@ -806,18 +805,22 @@ static void
SetJvmEnvironment(int argc, char **argv) {
static const char* NMT_Env_Name = "NMT_LEVEL_";
const char* NMT_Arg_Name = IsJavaArgs() ? "-J-XX:NativeMemoryTracking=" : "-XX:NativeMemoryTracking=";
int i;
/* process only the launcher arguments */
for (i = 0; i < argc; i++) {
char *arg = argv[i];
/*
* Since this must be a VM flag we stop processing once we see
* an argument the launcher would not have processed beyond (such
* as -version or -h), or an argument that indicates the following
* arguments are for the application (i.e. the main class name, or
* the -jar argument).
* Java launcher (!IsJavaArgs()):
* Since this must be a VM flag we stop processing once we see
* an argument the launcher would not have processed beyond (such
* as -version or -h), or an argument that indicates the following
* arguments are for the application (i.e. the main class name, or
* the -jar argument).
* Other launchers (IsJavaArgs()):
* All arguments have to be scanned to see if it is a -J argument.
*/
if (i > 0) {
if (!IsJavaArgs() && i > 0) {
char *prev = argv[i - 1];
// skip non-dash arg preceded by class path specifiers
if (*arg != '-' && IsWhiteSpaceOption(prev)) {
@ -835,10 +838,10 @@ SetJvmEnvironment(int argc, char **argv) {
* The argument is passed to the JVM, which will check validity.
* The JVM is responsible for removing the env variable.
*/
if (JLI_StrCCmp(arg, "-XX:NativeMemoryTracking=") == 0) {
if (JLI_StrCCmp(arg, NMT_Arg_Name) == 0) {
int retval;
// get what follows this parameter, include "="
size_t pnlen = JLI_StrLen("-XX:NativeMemoryTracking=");
size_t pnlen = JLI_StrLen(NMT_Arg_Name);
if (JLI_StrLen(arg) > pnlen) {
char* value = arg + pnlen;
size_t pbuflen = pnlen + JLI_StrLen(value) + 10; // 10 max pid digits