Re: RFR: JDK-8281006 Module::getResourceAsStream should check if the resource is open unconditionally when caller is null [v4]
On Mon, 11 Apr 2022 00:48:34 GMT, Tim Prinzing wrote:
>> Created a test called NullCallerGetResource to test
>> Module::getResourceAsStream and Class::getResourceAsStream from the native
>> level.
>>
>> At the java level the test builds a test module called 'n' which opens the
>> package 'open' to everyone. There is also a package 'closed' which is
>> neither opened or exported. Both packages have a text file called
>> 'test.txt'. The open package has a class called OpenResources and the closed
>> package has a class called ClosedResources. The native test is launched with
>> the test module n added.
>>
>> At the native level the test tries to read both the open and closed resource
>> from both the classes and the module. It performs the equivalent of the
>> following java operations:
>>
>> Class c = open.OpenResources.fetchClass();
>> InputStream in = c.getResourceAsStream("test.txt");
>> assert(in != null); in.close();
>>
>> Module n = c.getModule();
>> in = n.getResourceAsStream("open/test.txt");
>> assert(in != null); in.close();
>>
>> Class closed = closed.ClosedResources.fetchClass();
>> assert(closedsStream("test.txt") == null);
>> assert(n.getResourceAsStream("closed/test.txt") == null);
>>
>> The test initially threw an NPE when trying to fetch the open resource. The
>> Module class was fixed by removing the fragment with the (caller == null)
>> test in getResourceAsStream, and changing the call to isOpen(String,Module)
>> to use EVERYONE_MODULE if the caller module is null.
>
> Tim Prinzing has updated the pull request incrementally with one additional
> commit since the last revision:
>
> requested changes
Marked as reviewed by mchung (Reviewer).
test/jdk/java/lang/module/exeNullCallerGetResource/exeNullCallerGetResource.c
line 95:
> 93: jclass class_OpenResources = (*env)->FindClass(env,
> "open/OpenResources");
> 94: assert(class_OpenResources != NULL);
> 95: jmethodID mid_OpenResources_fetchClass =
> (*env)->GetStaticMethodID(env, class_OpenResources, "fetchClass",
> "()Ljava/lang/Class;" );
It seems that invoking `fetchClass` isn't necessary since you can simply use
`class_OpenResources`. Similarly for `class_ClosedResources`
test/jdk/java/lang/module/exeNullCallerGetResource/exeNullCallerGetResource.c
line 183:
> 181: exit(-1);
> 182: }
> 183: assert(in == NULL);
assert is typically used for sanity test. As part of the test validation,
e.g. in this case `in == NULL` or `in != NULL` in line 157, it may be clearer
if it's an explicit check and throw exception to indicate test failure
especially in case `#undef NDEBUG` may not be set in the test.
-
PR: https://git.openjdk.java.net/jdk/pull/8134
Re: RFR: JDK-8281006 Module::getResourceAsStream should check if the resource is open unconditionally when caller is null [v4]
On Mon, 11 Apr 2022 00:48:34 GMT, Tim Prinzing wrote:
>> Created a test called NullCallerGetResource to test
>> Module::getResourceAsStream and Class::getResourceAsStream from the native
>> level.
>>
>> At the java level the test builds a test module called 'n' which opens the
>> package 'open' to everyone. There is also a package 'closed' which is
>> neither opened or exported. Both packages have a text file called
>> 'test.txt'. The open package has a class called OpenResources and the closed
>> package has a class called ClosedResources. The native test is launched with
>> the test module n added.
>>
>> At the native level the test tries to read both the open and closed resource
>> from both the classes and the module. It performs the equivalent of the
>> following java operations:
>>
>> Class c = open.OpenResources.fetchClass();
>> InputStream in = c.getResourceAsStream("test.txt");
>> assert(in != null); in.close();
>>
>> Module n = c.getModule();
>> in = n.getResourceAsStream("open/test.txt");
>> assert(in != null); in.close();
>>
>> Class closed = closed.ClosedResources.fetchClass();
>> assert(closedsStream("test.txt") == null);
>> assert(n.getResourceAsStream("closed/test.txt") == null);
>>
>> The test initially threw an NPE when trying to fetch the open resource. The
>> Module class was fixed by removing the fragment with the (caller == null)
>> test in getResourceAsStream, and changing the call to isOpen(String,Module)
>> to use EVERYONE_MODULE if the caller module is null.
>
> Tim Prinzing has updated the pull request incrementally with one additional
> commit since the last revision:
>
> requested changes
Thanks for the update, the src changes in c5fef46b look okay.
-
PR: https://git.openjdk.java.net/jdk/pull/8134
Re: RFR: JDK-8281006 Module::getResourceAsStream should check if the resource is open unconditionally when caller is null [v4]
> Created a test called NullCallerGetResource to test
> Module::getResourceAsStream and Class::getResourceAsStream from the native
> level.
>
> At the java level the test builds a test module called 'n' which opens the
> package 'open' to everyone. There is also a package 'closed' which is neither
> opened or exported. Both packages have a text file called 'test.txt'. The
> open package has a class called OpenResources and the closed package has a
> class called ClosedResources. The native test is launched with the test
> module n added.
>
> At the native level the test tries to read both the open and closed resource
> from both the classes and the module. It performs the equivalent of the
> following java operations:
>
> Class c = open.OpenResources.fetchClass();
> InputStream in = c.getResourceAsStream("test.txt");
> assert(in != null); in.close();
>
> Module n = c.getModule();
> in = n.getResourceAsStream("open/test.txt");
> assert(in != null); in.close();
>
> Class closed = closed.ClosedResources.fetchClass();
> assert(closedsStream("test.txt") == null);
> assert(n.getResourceAsStream("closed/test.txt") == null);
>
> The test initially threw an NPE when trying to fetch the open resource. The
> Module class was fixed by removing the fragment with the (caller == null)
> test in getResourceAsStream, and changing the call to isOpen(String,Module)
> to use EVERYONE_MODULE if the caller module is null.
Tim Prinzing has updated the pull request incrementally with one additional
commit since the last revision:
requested changes
-
Changes:
- all: https://git.openjdk.java.net/jdk/pull/8134/files
- new: https://git.openjdk.java.net/jdk/pull/8134/files/912896d7..c5fef46b
Webrevs:
- full: https://webrevs.openjdk.java.net/?repo=jdk=8134=03
- incr: https://webrevs.openjdk.java.net/?repo=jdk=8134=02-03
Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
Patch: https://git.openjdk.java.net/jdk/pull/8134.diff
Fetch: git fetch https://git.openjdk.java.net/jdk pull/8134/head:pull/8134
PR: https://git.openjdk.java.net/jdk/pull/8134
