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// readsyms.h -- read input file symbols for gold -*- C++ -*-
#ifndef GOLD_READSYMS_H
#define GOLD_READSYMS_H
#include "workqueue.h"
#include "object.h"
namespace gold
{
class Input_objects;
class Symbol_table;
// This Task is responsible for reading the symbols from an input
// file. This also includes reading the relocations so that we can
// check for any that require a PLT and/or a GOT. After the data has
// been read, this queues up another task to actually add the symbols
// to the symbol table. The tasks are separated because the file
// reading can occur in parallel but adding the symbols must be done
// in the order of the input files.
class Read_symbols : public Task
{
public:
// DIRPATH is the list of directories to search for libraries.
// INPUT is the file to read. THIS_BLOCKER is used to prevent the
// associated Add_symbols task from running before the previous one
// has completed; it will be NULL for the first task. NEXT_BLOCKER
// is used to block the next input file from adding symbols.
Read_symbols(const General_options& options, Input_objects* input_objects,
Symbol_table* symtab, Layout* layout, const Dirsearch& dirpath,
const Input_argument& input,
Task_token* this_blocker, Task_token* next_blocker)
: options_(options), input_objects_(input_objects), symtab_(symtab),
layout_(layout), dirpath_(dirpath), input_(input),
this_blocker_(this_blocker), next_blocker_(next_blocker)
{ }
~Read_symbols();
// The standard Task methods.
Is_runnable_type
is_runnable(Workqueue*);
Task_locker*
locks(Workqueue*);
void
run(Workqueue*);
private:
const General_options& options_;
Input_objects* input_objects_;
Symbol_table* symtab_;
Layout* layout_;
const Dirsearch& dirpath_;
const Input_argument& input_;
Task_token* this_blocker_;
Task_token* next_blocker_;
};
// This Task handles adding the symbols to the symbol table. These
// tasks must be run in the same order as the arguments appear on the
// command line.
class Add_symbols : public Task
{
public:
// THIS_BLOCKER is used to prevent this task from running before the
// one for the previous input file. NEXT_BLOCKER is used to prevent
// the next task from running.
Add_symbols(Symbol_table* symtab, Layout* layout, Object* object,
Read_symbols_data* sd, Task_token* this_blocker,
Task_token* next_blocker)
: symtab_(symtab), layout_(layout), object_(object), sd_(sd),
this_blocker_(this_blocker), next_blocker_(next_blocker)
{ }
~Add_symbols();
// The standard Task methods.
Is_runnable_type
is_runnable(Workqueue*);
Task_locker*
locks(Workqueue*);
void
run(Workqueue*);
private:
class Add_symbols_locker;
Symbol_table* symtab_;
Layout* layout_;
Object* object_;
Read_symbols_data* sd_;
Task_token* this_blocker_;
Task_token* next_blocker_;
};
} // end namespace gold
#endif // !defined(GOLD_READSYMS_H)
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