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7179383: MaxDirectMemorySize argument parsing is broken for values >2G

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Change hotspot flag to be unsigned

Reviewed-by: dholmes, sla, fparain, brutisso
This commit is contained in:
Chris Dennis 2012-07-03 01:41:29 -04:00 committed by David Holmes
parent 135f315eaa
commit d1080de4ee
3 changed files with 19 additions and 4 deletions
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10
hotspot/src/share/vm/prims/jvm.cpp
View File

@ -345,9 +345,13 @@ JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties))
// Do this after setting user properties to prevent people
// from setting the value with a -D option, as requested.
{
char as_chars[256];
jio_snprintf(as_chars, sizeof(as_chars), INTX_FORMAT, MaxDirectMemorySize);
PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars);
if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) {
PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1");
} else {
char as_chars[256];
jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize);
PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars);
}
}
// JVM monitoring and management support

11
hotspot/src/share/vm/runtime/arguments.cpp
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@ -2709,6 +2709,17 @@ SOLARIS_ONLY(
return JNI_EINVAL;
}
FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads);
} else if (match_option(option, "-XX:MaxDirectMemorySize=", &tail)) {
julong max_direct_memory_size = 0;
ArgsRange errcode = parse_memory_size(tail, &max_direct_memory_size, 0);
if (errcode != arg_in_range) {
jio_fprintf(defaultStream::error_stream(),
"Invalid maximum direct memory size: %s\n",
option->optionString);
describe_range_error(errcode);
return JNI_EINVAL;
}
FLAG_SET_CMDLINE(uintx, MaxDirectMemorySize, max_direct_memory_size);
} else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx
// Skip -XX:Flags= since that case has already been handled
if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) {

2
hotspot/src/share/vm/runtime/globals.hpp
View File

@ -3705,7 +3705,7 @@ class CommandLineFlags {
\
/* Properties for Java libraries */ \
\
product(intx, MaxDirectMemorySize, -1, \
product(uintx, MaxDirectMemorySize, 0, \
"Maximum total size of NIO direct-buffer allocations") \
\
/* temporary developer defined flags */ \