void CodeBlobCollector::do_blob(CodeBlob* cb) {
// ignore nmethods
if (cb->is_nmethod()) {
return;
}
// exclude VtableStubs, which are processed separately
if (cb->is_buffer_blob() && strcmp(cb->name(), "vtable chunks") == 0) {
return;
}
// check if this starting address has been seen already - the
// assumption is that stubs are inserted into the list before the
// enclosing BufferBlobs.
address addr = cb->code_begin();
for (int i=0; i<_global_code_blobs->length(); i++) {
JvmtiCodeBlobDesc* scb = _global_code_blobs->at(i);
if (addr == scb->code_begin()) {
return;
}
}
// record the CodeBlob details as a JvmtiCodeBlobDesc
JvmtiCodeBlobDesc* scb = new JvmtiCodeBlobDesc(cb->name(), cb->code_begin(), cb->code_end());
_global_code_blobs->append(scb);
}
jvmtiError JvmtiCodeBlobEvents::generate_dynamic_code_events(JvmtiEnv* env) {
CodeBlobCollector collector;
// first collect all the code blobs
{
MutexLocker mu(CodeCache_lock);
collector.collect();
}
// iterate over the collected list and post an event for each blob
JvmtiCodeBlobDesc* blob = collector.first();
while (blob != NULL) {
JvmtiExport::post_dynamic_code_generated(env, blob->name(), blob->code_begin(), blob->code_end());
blob = collector.next();
}
return JVMTI_ERROR_NONE;
}
void CodeBlobCollector::do_blob(CodeBlob* cb) {
// ignore nmethods
if (cb->is_nmethod()) {
return;
}
// check if this starting address has been seen already - the
// assumption is that stubs are inserted into the list before the
// enclosing BufferBlobs.
address addr = cb->instructions_begin();
for (int i=0; i<_global_code_blobs->length(); i++) {
JvmtiCodeBlobDesc* scb = _global_code_blobs->at(i);
if (addr == scb->code_begin()) {
return;
}
}
// we must name the CodeBlob - some CodeBlobs already have names :-
// - stubs used by compiled code to call a (static) C++ runtime routine
// - non-relocatable machine code such as the interpreter, stubroutines, etc.
// - various singleton blobs
//
// others are unnamed so we create a name :-
// - OSR adapter (interpreter frame that has been on-stack replaced)
// - I2C and C2I adapters
const char* name = NULL;
if (cb->is_runtime_stub()) {
name = ((RuntimeStub*)cb)->name();
}
if (cb->is_buffer_blob()) {
name = ((BufferBlob*)cb)->name();
}
if (cb->is_deoptimization_stub() || cb->is_safepoint_stub()) {
name = ((SingletonBlob*)cb)->name();
}
if (cb->is_uncommon_trap_stub() || cb->is_exception_stub()) {
name = ((SingletonBlob*)cb)->name();
}
// record the CodeBlob details as a JvmtiCodeBlobDesc
JvmtiCodeBlobDesc* scb = new JvmtiCodeBlobDesc(name, cb->instructions_begin(),
cb->instructions_end());
_global_code_blobs->append(scb);
}
jvmtiError JvmtiCodeBlobEvents::generate_dynamic_code_events(JvmtiEnv* env) {
CodeBlobCollector collector;
// First collect all the code blobs. This has to be done in a
// single pass over the code cache with CodeCache_lock held because
// there isn't any safe way to iterate over regular CodeBlobs since
// they can be freed at any point.
{
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
collector.collect();
}
// iterate over the collected list and post an event for each blob
JvmtiCodeBlobDesc* blob = collector.first();
while (blob != NULL) {
JvmtiExport::post_dynamic_code_generated(env, blob->name(), blob->code_begin(), blob->code_end());
blob = collector.next();
}
return JVMTI_ERROR_NONE;
}
void CodeBlobCollector::do_blob(CodeBlob* cb) {
if(cb->is_methodCode()){
return;
}
// check if this starting address has been seen already - the
// assumption is that stubs are inserted into the list before the
// enclosing BufferBlobs.
address addr=cb->code_begins();
for (int i=0; i<_global_code_blobs->length(); i++) {
JvmtiCodeBlobDesc* scb = _global_code_blobs->at(i);
if (addr == scb->code_begin()) {
return;
}
}
// we must name the CodeBlob - some CodeBlobs already have names :-
// - stubs used by compiled code to call a (static) C++ runtime routine
// - non-relocatable machine code such as the interpreter, stubroutines, etc.
// - various singleton blobs
//
// others are unnamed so we create a name :-
// - OSR adapter (interpreter frame that has been on-stack replaced)
// - I2C and C2I adapters
//
// CodeBlob::name() should return any defined name string, first.
const char* name = cb->methodname(); // returns NULL or methodname+signature
if (! name ) {
name = cb->name(); // returns generic name...
} else {
ShouldNotReachHere();
}
// record the CodeBlob details as a JvmtiCodeBlobDesc
JvmtiCodeBlobDesc*scb=new JvmtiCodeBlobDesc(name,cb->code_begins(),
cb->code_ends());
_global_code_blobs->append(scb);
}
