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6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits

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Cache Jvmti and DTrace flags used by Compiler.

Reviewed-by: never
This commit is contained in:
Vladimir Kozlov 2009-05-08 10:44:20 -07:00
parent b5cff6a1a0
commit 34ee921399
16 changed files with 118 additions and 35 deletions
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65
hotspot/src/share/vm/ci/ciEnv.cpp
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@ -170,6 +170,34 @@ ciEnv::~ciEnv() {
current_thread->set_env(NULL);
}
// ------------------------------------------------------------------
// Cache Jvmti state
void ciEnv::cache_jvmti_state() {
VM_ENTRY_MARK;
// Get Jvmti capabilities under lock to get consistant values.
MutexLocker mu(JvmtiThreadState_lock);
_jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
_jvmti_can_examine_or_deopt_anywhere = JvmtiExport::can_examine_or_deopt_anywhere();
_jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
_jvmti_can_post_exceptions = JvmtiExport::can_post_exceptions();
}
// ------------------------------------------------------------------
// Cache DTrace flags
void ciEnv::cache_dtrace_flags() {
// Need lock?
_dtrace_extended_probes = ExtendedDTraceProbes;
if (_dtrace_extended_probes) {
_dtrace_monitor_probes = true;
_dtrace_method_probes = true;
_dtrace_alloc_probes = true;
} else {
_dtrace_monitor_probes = DTraceMonitorProbes;
_dtrace_method_probes = DTraceMethodProbes;
_dtrace_alloc_probes = DTraceAllocProbes;
}
}
// ------------------------------------------------------------------
// helper for lazy exception creation
ciInstance* ciEnv::get_or_create_exception(jobject& handle, symbolHandle name) {
@ -810,16 +838,39 @@ void ciEnv::register_method(ciMethod* target,
// and invalidating our dependencies until we install this method.
MutexLocker ml(Compile_lock);
if (log() != NULL) {
// Log the dependencies which this compilation declares.
dependencies()->log_all_dependencies();
// Change in Jvmti state may invalidate compilation.
if (!failing() &&
( (!jvmti_can_hotswap_or_post_breakpoint() &&
JvmtiExport::can_hotswap_or_post_breakpoint()) ||
(!jvmti_can_examine_or_deopt_anywhere() &&
JvmtiExport::can_examine_or_deopt_anywhere()) ||
(!jvmti_can_access_local_variables() &&
JvmtiExport::can_access_local_variables()) ||
(!jvmti_can_post_exceptions() &&
JvmtiExport::can_post_exceptions()) )) {
record_failure("Jvmti state change invalidated dependencies");
}
// Encode the dependencies now, so we can check them right away.
dependencies()->encode_content_bytes();
// Change in DTrace flags may invalidate compilation.
if (!failing() &&
( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
(!dtrace_method_probes() && DTraceMethodProbes) ||
(!dtrace_alloc_probes() && DTraceAllocProbes) )) {
record_failure("DTrace flags change invalidated dependencies");
}
// Check for {class loads, evolution, breakpoints} during compilation
check_for_system_dictionary_modification(target);
if (!failing()) {
if (log() != NULL) {
// Log the dependencies which this compilation declares.
dependencies()->log_all_dependencies();
}
// Encode the dependencies now, so we can check them right away.
dependencies()->encode_content_bytes();
// Check for {class loads, evolution, breakpoints} during compilation
check_for_system_dictionary_modification(target);
}
methodHandle method(THREAD, target->get_methodOop());