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8043224: -Xcheck:jni improvements to exception checking and excessive local refs

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Warning when not checking exceptions from function that require so, also when local refs expand beyond capacity.

Reviewed-by: zgu, coleenp, hseigel
This commit is contained in:
David Simms 2014-06-11 18:34:09 +02:00
parent b6a2f946f6
commit d9b63bdbdd
6 changed files with 201 additions and 101 deletions
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9
hotspot/src/share/vm/runtime/thread.hpp
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@ -915,6 +915,9 @@ class JavaThread: public Thread {
// support for JNI critical regions
jint _jni_active_critical; // count of entries into JNI critical region
// Checked JNI: function name requires exception check
char* _pending_jni_exception_check_fn;
// For deadlock detection.
int _depth_first_number;
@ -1400,6 +1403,12 @@ class JavaThread: public Thread {
assert(_jni_active_critical >= 0,
"JNI critical nesting problem?"); }
// Checked JNI, is the programmer required to check for exceptions, specify which function name
bool is_pending_jni_exception_check() const { return _pending_jni_exception_check_fn != NULL; }
void clear_pending_jni_exception_check() { _pending_jni_exception_check_fn = NULL; }
const char* get_pending_jni_exception_check() const { return _pending_jni_exception_check_fn; }
void set_pending_jni_exception_check(const char* fn_name) { _pending_jni_exception_check_fn = (char*) fn_name; }
// For deadlock detection
int depth_first_number() { return _depth_first_number; }
void set_depth_first_number(int dfn) { _depth_first_number = dfn; }