// The cache_entries parameter is empty (on cold call site) or has entries
// (on cache miss). Called from assembly with the actual return address.
// Compilation of the inline cache may trigger a GC, which may trigger a
// compaction;
// also, the block containing the return address may now be dead. Use a
// code_root to take care of the details.
// Allocates memory
cell factor_vm::inline_cache_miss(cell return_address_) {
code_root return_address(return_address_, this);
bool tail_call_site = tail_call_site_p(return_address.value);
#ifdef PIC_DEBUG
FACTOR_PRINT("Inline cache miss at "
<< (tail_call_site ? "tail" : "non-tail")
<< " call site 0x" << std::hex << return_address.value
<< std::dec);
print_callstack();
#endif
data_root<array> cache_entries(ctx->pop(), this);
fixnum index = untag_fixnum(ctx->pop());
data_root<array> methods(ctx->pop(), this);
data_root<word> generic_word(ctx->pop(), this);
data_root<object> object(((cell*)ctx->datastack)[-index], this);
cell pic_size = array_capacity(cache_entries.untagged()) / 2;
update_pic_transitions(pic_size);
cell xt = generic_word->entry_point;
if (pic_size < max_pic_size) {
cell klass = object_class(object.value());
cell method = lookup_method(object.value(), methods.value());
data_root<array> new_cache_entries(
add_inline_cache_entry(cache_entries.value(), klass, method), this);
inline_cache_jit jit(generic_word.value(), this);
jit.emit_inline_cache(index, generic_word.value(), methods.value(),
new_cache_entries.value(), tail_call_site);
code_block* code = jit.to_code_block(CODE_BLOCK_PIC, JIT_FRAME_SIZE);
initialize_code_block(code);
xt = code->entry_point();
}
// Install the new stub.
if (return_address.valid) {
// Since each PIC is only referenced from a single call site,
// if the old call target was a PIC, we can deallocate it immediately,
// instead of leaving dead PICs around until the next GC.
deallocate_inline_cache(return_address.value);
set_call_target(return_address.value, xt);
#ifdef PIC_DEBUG
FACTOR_PRINT("Updated " << (tail_call_site ? "tail" : "non-tail")
<< " call site 0x" << std::hex << return_address.value << std::dec
<< " with 0x" << std::hex << (cell)xt << std::dec);
print_callstack();
#endif
}
return xt;
}
/* The cache_entries parameter is either f (on cold call site) or an array (on cache miss).
Called from assembly with the actual return address */
void *factor_vm::inline_cache_miss(cell return_address)
{
check_code_pointer(return_address);
/* Since each PIC is only referenced from a single call site,
if the old call target was a PIC, we can deallocate it immediately,
instead of leaving dead PICs around until the next GC. */
deallocate_inline_cache(return_address);
gc_root<array> cache_entries(dpop(),this);
fixnum index = untag_fixnum(dpop());
gc_root<array> methods(dpop(),this);
gc_root<word> generic_word(dpop(),this);
gc_root<object> object(((cell *)ds)[-index],this);
void *xt;
cell pic_size = inline_cache_size(cache_entries.value());
update_pic_transitions(pic_size);
if(pic_size >= max_pic_size)
xt = megamorphic_call_stub(generic_word.value());
else
{
cell klass = object_class(object.value());
cell method = lookup_method(object.value(),methods.value());
gc_root<array> new_cache_entries(add_inline_cache_entry(
cache_entries.value(),
klass,
method),this);
xt = compile_inline_cache(index,
generic_word.value(),
methods.value(),
new_cache_entries.value(),
tail_call_site_p(return_address))->xt();
}
/* Install the new stub. */
set_call_target(return_address,xt);
#ifdef PIC_DEBUG
printf("Updated %s call site 0x%lx with 0x%lx\n",
tail_call_site_p(return_address) ? "tail" : "non-tail",
return_address,
(cell)xt);
#endif
return xt;
}
void * z_object_connect(Self *self,char *name,ZObject *target,char *method_name,void *userdata)
{
{
#if !defined(BOOTSTRAP)
ZClosure *closure;
ZObjectSignalHandler handler;
assert(selfp->signal_map != NULL);
/* Increase the reference count of self so it stays alive for
the disconnect() call. */
ref(self);
/* lookup handler from method_name */
handler = lookup_method(target, method_name);
assert(handler != NULL);
/* create a closure */
closure = z_closure_new(CTX_FROM_OBJECT(self), ALLOCATOR_FROM_OBJECT(self));
z_closure_set_target(closure, target);
z_closure_set_handler(closure, handler);
z_closure_set_userdata(closure, userdata);
/* locate signal's closure list by name */
ZMap *signal_map = (ZMap *) selfp->signal_map;
ZMapIter *it = z_map_find(signal_map, name);
assert(it != NULL);
ZVector *closure_list = z_map_get_value(signal_map, it);
unref(Z_OBJECT(it));
/* add new closure into the signal */
z_vector_push_back(closure_list, closure);
return closure;
#else
return NULL;
#endif
}
}
void factor_vm::primitive_lookup_method()
{
cell methods = dpop();
cell obj = dpop();
dpush(lookup_method(obj,methods));
}
//=========================================================================
scx::Condition GetFileHandler::handle_message(MessageStream* message)
{
const Request& request = message->get_request();
Response& response = message->get_response();
if (request.get_method() != "GET" &&
request.get_method() != "HEAD" ) {
// Don't understand the method
response.set_status(http::Status::NotImplemented);
return scx::Close;
}
// Open the file
scx::FilePath path = request.get_path();
scx::File* file = new scx::File();
if (file->open(path,scx::File::Read) != scx::Ok) {
message->log("Cannot open file '" + path.path() + "'");
response.set_status(http::Status::Forbidden);
delete file;
return scx::Close;
}
// Find last modified date
scx::Date lastmod = file->stat().time();
response.set_header("Last-Modified",lastmod.string());
std::string mod = request.get_header("If-Modified-Since");
if (!mod.empty()) {
scx::Date dmod = scx::Date(mod);
if (lastmod <= dmod) {
message->log("File is not modified");
response.set_status(http::Status::NotModified);
delete file;
return scx::Close;
}
}
response.set_status(http::Status::Ok);
// Set content length
int clength = file->size();
std::ostringstream oss;
oss << clength;
response.set_header("Content-Length",oss.str());
// Lookup MIME type for file
bool compressible = false;
scx::Module::Ref mime = scx::Kernel::get()->get_module("mime");
if (mime.valid()) {
scx::ScriptList::Ref args(new scx::ScriptList());
args.object()->give( scx::ScriptString::new_ref(path.path()) );
scx::ScriptMethodRef lookup_method(mime,"lookup");
scx::MimeType* mimetype = 0;
scx::ScriptRef* ret =
lookup_method.call(scx::ScriptAuth::Untrusted,&args);
if (ret && (mimetype = dynamic_cast<scx::MimeType*>(ret->object()))) {
response.set_header("Content-Type",mimetype->get_string());
}
// Decide if the file is compressible, this will be used to
// determine whether to use gzip to send it.
compressible = (mimetype->get_type() == "text");
delete ret;
}
if (request.get_method() == "HEAD") {
// Don't actually send the file, just the headers
message->log("GetFile headers for '" + path.path() + "'");
delete file;
return scx::Close;
}
message->log("GetFile '" + path.path() + "'");
// Decide whether to use gzip
// This is based on whether the file is compressible (text)
// and if it is over a certain size (i.e. worth compressing)
if (compressible && clength > 1000) {
// Also check if the client accepts gzip encoding
bool gzip_accepted = false;
scx::MimeHeader ae = request.get_header_parsed("Accept-Encoding");
for (int i=0; i<ae.num_values(); ++i) {
if (ae.get_value(i)->value() == "gzip") {
gzip_accepted = true;
break;
}
}
if (gzip_accepted) {
message->log("Using gzip");
message->add_stream(new scx::GzipStream(0,16384));
response.set_header("Content-Encoding","gzip");
// Unfortunately we have to remove the content-length, so
// chunked encoding will be used for gzipped content.
response.remove_header("Content-Length");
}
}
const int MAX_BUFFER_SIZE = 65536;
scx::StreamTransfer* xfer =
new scx::StreamTransfer(file,std::min(clength,MAX_BUFFER_SIZE));
xfer->set_close_when_finished(true);
message->add_stream(xfer);
// Add file to kernel
scx::Kernel::get()->connect(file);
return scx::Ok;
}
static bool init_ids(JNIEnv* env) {
// Load NativeObject classes
init_class(env, "mapnik/NativeObject", CLASS_NATIVEOBJECT);
init_class(env, "mapnik/MapDefinition", CLASS_MAP);
init_class(env, "mapnik/Datasource", CLASS_DATASOURCE);
init_class(env, "mapnik/DatasourceCache", CLASS_DATASOURCE_CACHE);
init_class(env, "mapnik/Layer", CLASS_LAYER);
init_class(env, "mapnik/FeatureTypeStyle", CLASS_FEATURE_TYPE_STYLE);
init_class(env, "mapnik/Projection", CLASS_PROJECTION);
init_class(env, "mapnik/Query", CLASS_QUERY);
init_class(env, "mapnik/FeatureSet", CLASS_FEATURESET);
init_class(env, "mapnik/Geometry", CLASS_GEOMETRY);
init_class(env, "mapnik/Image", CLASS_IMAGE);
init_class(env, "mapnik/Grid", CLASS_GRID);
// Ptr
CTOR_NATIVEOBJECT=lookup_method(env, CLASS_NATIVEOBJECT, "<init>", "()V");
FIELD_PTR=lookup_field(env, CLASS_NATIVEOBJECT, "ptr", "J");
// FeatureSet
FIELD_FEATURESET_FEATURE_PTR=lookup_field(env, CLASS_FEATURESET, "feature_ptr", "J");
// String
init_class(env, "java/lang/String", CLASS_STRING);
// Integer
init_class(env, "java/lang/Integer", CLASS_INTEGER);
METHOD_INTEGER_VALUEOF=lookup_static_method(env, CLASS_INTEGER, "valueOf", "(I)Ljava/lang/Integer;");
init_class(env, "java/lang/Boolean", CLASS_BOOLEAN);
METHOD_BOOLEAN_VALUEOF=lookup_static_method(env, CLASS_BOOLEAN, "valueOf", "(Z)Ljava/lang/Boolean;");
init_class(env, "java/lang/Long", CLASS_LONG);
METHOD_LONG_VALUEOF=lookup_static_method(env, CLASS_LONG, "valueOf", "(J)Ljava/lang/Long;");
// Double
init_class(env, "java/lang/Double", CLASS_DOUBLE);
METHOD_DOUBLE_VALUEOF=lookup_static_method(env, CLASS_DOUBLE, "valueOf", "(D)Ljava/lang/Double;");
// Parameters
init_class(env, "mapnik/Parameters", CLASS_PARAMETERS);
CTOR_PARAMETERS=lookup_method(env, CLASS_PARAMETERS, "<init>", "()V");
METHOD_PARAMETERS_SET_STRING=lookup_method(env, CLASS_PARAMETERS, "setString", "(Ljava/lang/String;Ljava/lang/String;)V");
METHOD_PARAMETERS_SET_BOOLEAN=lookup_method(env, CLASS_PARAMETERS, "setBool", "(Ljava/lang/String;Z)V");
METHOD_PARAMETERS_SET_INT=lookup_method(env, CLASS_PARAMETERS, "setInt", "(Ljava/lang/String;I)V");
METHOD_PARAMETERS_SET_LONG=lookup_method(env, CLASS_PARAMETERS, "setLong", "(Ljava/lang/String;J)V");
METHOD_PARAMETERS_SET_DOUBLE=lookup_method(env, CLASS_PARAMETERS, "setDouble", "(Ljava/lang/String;D)V");
METHOD_PARAMETERS_COPY_TO_NATIVE=lookup_method(env, CLASS_PARAMETERS, "copyToNative", "(J)V");
// HashSet
init_class(env, "java/util/HashSet", CLASS_HASHSET);
CTOR_HASHSET=lookup_method(env, CLASS_HASHSET, "<init>", "()V");
METHOD_HASHSET_ADD=lookup_method(env, CLASS_HASHSET, "add", "(Ljava/lang/Object;)Z");
// Box2d
init_class(env, "mapnik/Box2d", CLASS_BOX2D);
FIELD_BOX2D_MINX=lookup_field(env, CLASS_BOX2D, "minx", "D");
FIELD_BOX2D_MINY=lookup_field(env, CLASS_BOX2D, "miny", "D");
FIELD_BOX2D_MAXX=lookup_field(env, CLASS_BOX2D, "maxx", "D");
FIELD_BOX2D_MAXY=lookup_field(env, CLASS_BOX2D, "maxy", "D");
// Color
init_class(env, "mapnik/Color", CLASS_COLOR);
FIELD_COLOR_RED=lookup_field(env, CLASS_COLOR, "red", "I");
FIELD_COLOR_GREEN=lookup_field(env, CLASS_COLOR, "green", "I");
FIELD_COLOR_BLUE=lookup_field(env, CLASS_COLOR, "blue", "I");
FIELD_COLOR_ALPHA=lookup_field(env, CLASS_COLOR, "alpha", "I");
// Coord
init_class(env, "mapnik/Coord", CLASS_COORD);
FIELD_COORD_X=lookup_field(env, CLASS_COORD, "x", "D");
FIELD_COORD_Y=lookup_field(env, CLASS_COORD, "y", "D");
// LayerDescriptor
init_class(env, "mapnik/LayerDescriptor", CLASS_LAYERDESCRIPTOR);
CTOR_LAYERDESCRIPTOR=lookup_method(env, CLASS_LAYERDESCRIPTOR, "<init>", "()V");
FIELD_LAYERDESCRIPTOR_NAME=lookup_field(env, CLASS_LAYERDESCRIPTOR, "name", "Ljava/lang/String;");
FIELD_LAYERDESCRIPTOR_ENCODING=lookup_field(env, CLASS_LAYERDESCRIPTOR, "encoding", "Ljava/lang/String;");
METHOD_LAYERDESCRIPTOR_ADDDESCRIPTOR=lookup_method(env, CLASS_LAYERDESCRIPTOR, "addDescriptor", "(Lmapnik/AttributeDescriptor;)V");
// AttributeDescriptor
init_class(env, "mapnik/AttributeDescriptor", CLASS_ATTRIBUTEDESCRIPTOR);
CTOR_ATTRIBUTEDESCRIPTOR=lookup_method(env, CLASS_ATTRIBUTEDESCRIPTOR, "<init>", "()V");
FIELD_ATTRIBUTEDESCRIPTOR_NAME=lookup_field(env, CLASS_ATTRIBUTEDESCRIPTOR, "name", "Ljava/lang/String;");
FIELD_ATTRIBUTEDESCRIPTOR_TYPE=lookup_field(env, CLASS_ATTRIBUTEDESCRIPTOR, "type", "I");
FIELD_ATTRIBUTEDESCRIPTOR_PRIMARYKEY=lookup_field(env, CLASS_ATTRIBUTEDESCRIPTOR, "primaryKey", "Z");
FIELD_ATTRIBUTEDESCRIPTOR_SIZE=lookup_field(env, CLASS_ATTRIBUTEDESCRIPTOR, "size", "I");
FIELD_ATTRIBUTEDESCRIPTOR_PRECISION=lookup_field(env, CLASS_ATTRIBUTEDESCRIPTOR, "precision", "I");
return true;
}
