479 lines
17 KiB
C++
479 lines
17 KiB
C++
/*
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* Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_COMPILER_COMPILEBROKER_HPP
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#define SHARE_VM_COMPILER_COMPILEBROKER_HPP
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#include "ci/compilerInterface.hpp"
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#include "compiler/abstractCompiler.hpp"
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#include "runtime/perfData.hpp"
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class nmethod;
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class nmethodLocker;
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// CompileTask
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//
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// An entry in the compile queue. It represents a pending or current
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// compilation.
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class CompileTask : public CHeapObj<mtCompiler> {
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friend class VMStructs;
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private:
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static CompileTask* _task_free_list;
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#ifdef ASSERT
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static int _num_allocated_tasks;
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#endif
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Monitor* _lock;
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uint _compile_id;
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Method* _method;
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jobject _method_holder;
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int _osr_bci;
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bool _is_complete;
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bool _is_success;
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bool _is_blocking;
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int _comp_level;
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int _num_inlined_bytecodes;
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nmethodLocker* _code_handle; // holder of eventual result
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CompileTask* _next, *_prev;
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bool _is_free;
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// Fields used for logging why the compilation was initiated:
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jlong _time_queued; // in units of os::elapsed_counter()
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Method* _hot_method; // which method actually triggered this task
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jobject _hot_method_holder;
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int _hot_count; // information about its invocation counter
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const char* _comment; // more info about the task
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const char* _failure_reason;
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public:
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CompileTask() {
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_lock = new Monitor(Mutex::nonleaf+2, "CompileTaskLock");
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}
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void initialize(int compile_id, methodHandle method, int osr_bci, int comp_level,
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methodHandle hot_method, int hot_count, const char* comment,
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bool is_blocking);
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static CompileTask* allocate();
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static void free(CompileTask* task);
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int compile_id() const { return _compile_id; }
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Method* method() const { return _method; }
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int osr_bci() const { return _osr_bci; }
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bool is_complete() const { return _is_complete; }
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bool is_blocking() const { return _is_blocking; }
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bool is_success() const { return _is_success; }
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nmethodLocker* code_handle() const { return _code_handle; }
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void set_code_handle(nmethodLocker* l) { _code_handle = l; }
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nmethod* code() const; // _code_handle->code()
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void set_code(nmethod* nm); // _code_handle->set_code(nm)
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Monitor* lock() const { return _lock; }
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void mark_complete() { _is_complete = true; }
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void mark_success() { _is_success = true; }
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int comp_level() { return _comp_level;}
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void set_comp_level(int comp_level) { _comp_level = comp_level;}
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int num_inlined_bytecodes() const { return _num_inlined_bytecodes; }
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void set_num_inlined_bytecodes(int n) { _num_inlined_bytecodes = n; }
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CompileTask* next() const { return _next; }
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void set_next(CompileTask* next) { _next = next; }
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CompileTask* prev() const { return _prev; }
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void set_prev(CompileTask* prev) { _prev = prev; }
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bool is_free() const { return _is_free; }
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void set_is_free(bool val) { _is_free = val; }
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private:
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static void print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level,
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bool is_osr_method = false, int osr_bci = -1, bool is_blocking = false,
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const char* msg = NULL, bool short_form = false);
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public:
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void print_compilation(outputStream* st = tty, const char* msg = NULL, bool short_form = false);
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static void print_compilation(outputStream* st, const nmethod* nm, const char* msg = NULL, bool short_form = false) {
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print_compilation_impl(st, nm->method(), nm->compile_id(), nm->comp_level(),
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nm->is_osr_method(), nm->is_osr_method() ? nm->osr_entry_bci() : -1, /*is_blocking*/ false,
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msg, short_form);
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}
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static void print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg = NULL);
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static void print_inlining(ciMethod* method, int inline_level, int bci, const char* msg = NULL) {
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print_inlining(tty, method, inline_level, bci, msg);
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}
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// Redefine Classes support
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void mark_on_stack();
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static void print_inline_indent(int inline_level, outputStream* st = tty);
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void print();
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void print_line();
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void print_line_on_error(outputStream* st, char* buf, int buflen);
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void log_task(xmlStream* log);
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void log_task_queued();
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void log_task_start(CompileLog* log);
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void log_task_done(CompileLog* log);
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void set_failure_reason(const char* reason) {
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_failure_reason = reason;
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}
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};
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// CompilerCounters
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//
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// Per Compiler Performance Counters.
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//
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class CompilerCounters : public CHeapObj<mtCompiler> {
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public:
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enum {
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cmname_buffer_length = 160
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};
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private:
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char _current_method[cmname_buffer_length];
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PerfStringVariable* _perf_current_method;
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int _compile_type;
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PerfVariable* _perf_compile_type;
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PerfCounter* _perf_time;
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PerfCounter* _perf_compiles;
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public:
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CompilerCounters(const char* name, int instance, TRAPS);
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// these methods should be called in a thread safe context
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void set_current_method(const char* method) {
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strncpy(_current_method, method, (size_t)cmname_buffer_length);
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if (UsePerfData) _perf_current_method->set_value(method);
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}
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char* current_method() { return _current_method; }
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void set_compile_type(int compile_type) {
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_compile_type = compile_type;
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if (UsePerfData) _perf_compile_type->set_value((jlong)compile_type);
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}
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int compile_type() { return _compile_type; }
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PerfCounter* time_counter() { return _perf_time; }
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PerfCounter* compile_counter() { return _perf_compiles; }
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};
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// CompileQueue
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//
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// A list of CompileTasks.
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class CompileQueue : public CHeapObj<mtCompiler> {
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private:
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const char* _name;
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Monitor* _lock;
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CompileTask* _first;
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CompileTask* _last;
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CompileTask* _first_stale;
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int _size;
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void purge_stale_tasks();
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public:
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CompileQueue(const char* name, Monitor* lock) {
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_name = name;
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_lock = lock;
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_first = NULL;
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_last = NULL;
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_size = 0;
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_first_stale = NULL;
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}
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const char* name() const { return _name; }
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Monitor* lock() const { return _lock; }
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void add(CompileTask* task);
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void remove(CompileTask* task);
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void remove_and_mark_stale(CompileTask* task);
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CompileTask* first() { return _first; }
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CompileTask* last() { return _last; }
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CompileTask* get();
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bool is_empty() const { return _first == NULL; }
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int size() const { return _size; }
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// Redefine Classes support
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void mark_on_stack();
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void free_all();
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NOT_PRODUCT (void print();)
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~CompileQueue() {
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assert (is_empty(), " Compile Queue must be empty");
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}
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};
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// CompileTaskWrapper
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//
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// Assign this task to the current thread. Deallocate the task
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// when the compilation is complete.
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class CompileTaskWrapper : StackObj {
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public:
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CompileTaskWrapper(CompileTask* task);
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~CompileTaskWrapper();
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};
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// Compilation
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//
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// The broker for all compilation requests.
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class CompileBroker: AllStatic {
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friend class Threads;
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friend class CompileTaskWrapper;
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public:
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enum {
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name_buffer_length = 100
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};
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// Compile type Information for print_last_compile() and CompilerCounters
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enum { no_compile, normal_compile, osr_compile, native_compile };
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static int assign_compile_id (methodHandle method, int osr_bci);
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private:
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static bool _initialized;
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static volatile bool _should_block;
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// This flag can be used to stop compilation or turn it back on
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static volatile jint _should_compile_new_jobs;
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// The installed compiler(s)
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static AbstractCompiler* _compilers[2];
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// These counters are used for assigning id's to each compilation
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static volatile jint _compilation_id;
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static volatile jint _osr_compilation_id;
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static int _last_compile_type;
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static int _last_compile_level;
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static char _last_method_compiled[name_buffer_length];
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static CompileQueue* _c2_compile_queue;
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static CompileQueue* _c1_compile_queue;
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static GrowableArray<CompilerThread*>* _compiler_threads;
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// performance counters
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static PerfCounter* _perf_total_compilation;
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static PerfCounter* _perf_native_compilation;
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static PerfCounter* _perf_osr_compilation;
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static PerfCounter* _perf_standard_compilation;
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static PerfCounter* _perf_total_bailout_count;
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static PerfCounter* _perf_total_invalidated_count;
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static PerfCounter* _perf_total_compile_count;
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static PerfCounter* _perf_total_native_compile_count;
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static PerfCounter* _perf_total_osr_compile_count;
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static PerfCounter* _perf_total_standard_compile_count;
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static PerfCounter* _perf_sum_osr_bytes_compiled;
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static PerfCounter* _perf_sum_standard_bytes_compiled;
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static PerfCounter* _perf_sum_nmethod_size;
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static PerfCounter* _perf_sum_nmethod_code_size;
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static PerfStringVariable* _perf_last_method;
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static PerfStringVariable* _perf_last_failed_method;
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static PerfStringVariable* _perf_last_invalidated_method;
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static PerfVariable* _perf_last_compile_type;
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static PerfVariable* _perf_last_compile_size;
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static PerfVariable* _perf_last_failed_type;
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static PerfVariable* _perf_last_invalidated_type;
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// Timers and counters for generating statistics
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static elapsedTimer _t_total_compilation;
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static elapsedTimer _t_osr_compilation;
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static elapsedTimer _t_standard_compilation;
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static int _total_compile_count;
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static int _total_bailout_count;
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static int _total_invalidated_count;
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static int _total_native_compile_count;
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static int _total_osr_compile_count;
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static int _total_standard_compile_count;
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static int _sum_osr_bytes_compiled;
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static int _sum_standard_bytes_compiled;
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static int _sum_nmethod_size;
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static int _sum_nmethod_code_size;
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static long _peak_compilation_time;
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static volatile jint _print_compilation_warning;
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static CompilerThread* make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, AbstractCompiler* comp, TRAPS);
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static void init_compiler_threads(int c1_compiler_count, int c2_compiler_count);
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static bool compilation_is_complete (methodHandle method, int osr_bci, int comp_level);
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static bool compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level);
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static bool is_compile_blocking ();
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static void preload_classes (methodHandle method, TRAPS);
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static CompileTask* create_compile_task(CompileQueue* queue,
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int compile_id,
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methodHandle method,
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int osr_bci,
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int comp_level,
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methodHandle hot_method,
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int hot_count,
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const char* comment,
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bool blocking);
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static void wait_for_completion(CompileTask* task);
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static void invoke_compiler_on_method(CompileTask* task);
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static void set_last_compile(CompilerThread *thread, methodHandle method, bool is_osr, int comp_level);
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static void push_jni_handle_block();
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static void pop_jni_handle_block();
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static bool check_break_at(methodHandle method, int compile_id, bool is_osr);
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static void collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task);
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static void compile_method_base(methodHandle method,
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int osr_bci,
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int comp_level,
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methodHandle hot_method,
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int hot_count,
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const char* comment,
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Thread* thread);
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static CompileQueue* compile_queue(int comp_level) {
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if (is_c2_compile(comp_level)) return _c2_compile_queue;
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if (is_c1_compile(comp_level)) return _c1_compile_queue;
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return NULL;
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}
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static bool init_compiler_runtime();
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static void shutdown_compiler_runtime(AbstractCompiler* comp, CompilerThread* thread);
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public:
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enum {
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// The entry bci used for non-OSR compilations.
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standard_entry_bci = InvocationEntryBci
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};
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static AbstractCompiler* compiler(int comp_level) {
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if (is_c2_compile(comp_level)) return _compilers[1]; // C2
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if (is_c1_compile(comp_level)) return _compilers[0]; // C1
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return NULL;
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}
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static bool compilation_is_in_queue(methodHandle method);
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static int queue_size(int comp_level) {
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CompileQueue *q = compile_queue(comp_level);
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return q != NULL ? q->size() : 0;
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}
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static void compilation_init();
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static void init_compiler_thread_log();
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static nmethod* compile_method(methodHandle method,
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int osr_bci,
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int comp_level,
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methodHandle hot_method,
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int hot_count,
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const char* comment, Thread* thread);
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static void compiler_thread_loop();
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static uint get_compilation_id() { return _compilation_id; }
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// Set _should_block.
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// Call this from the VM, with Threads_lock held and a safepoint requested.
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static void set_should_block();
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// Call this from the compiler at convenient points, to poll for _should_block.
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static void maybe_block();
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enum {
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// Flags for toggling compiler activity
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stop_compilation = 0,
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run_compilation = 1,
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shutdown_compilaton = 2
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};
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static bool should_compile_new_jobs() { return UseCompiler && (_should_compile_new_jobs == run_compilation); }
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static bool set_should_compile_new_jobs(jint new_state) {
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// Return success if the current caller set it
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jint old = Atomic::cmpxchg(new_state, &_should_compile_new_jobs, 1-new_state);
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return (old == (1-new_state));
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}
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static void disable_compilation_forever() {
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UseCompiler = false;
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AlwaysCompileLoopMethods = false;
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Atomic::xchg(shutdown_compilaton, &_should_compile_new_jobs);
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}
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static bool is_compilation_disabled_forever() {
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return _should_compile_new_jobs == shutdown_compilaton;
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}
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static void handle_full_code_cache();
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// Ensures that warning is only printed once.
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static bool should_print_compiler_warning() {
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jint old = Atomic::cmpxchg(1, &_print_compilation_warning, 0);
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return old == 0;
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}
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// Return total compilation ticks
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static jlong total_compilation_ticks() {
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return _perf_total_compilation != NULL ? _perf_total_compilation->get_value() : 0;
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}
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// Redefine Classes support
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static void mark_on_stack();
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// Print a detailed accounting of compilation time
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static void print_times();
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// Debugging output for failure
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static void print_last_compile();
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static void print_compiler_threads_on(outputStream* st);
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// compiler name for debugging
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static const char* compiler_name(int comp_level);
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static int get_total_compile_count() { return _total_compile_count; }
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static int get_total_bailout_count() { return _total_bailout_count; }
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static int get_total_invalidated_count() { return _total_invalidated_count; }
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static int get_total_native_compile_count() { return _total_native_compile_count; }
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static int get_total_osr_compile_count() { return _total_osr_compile_count; }
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static int get_total_standard_compile_count() { return _total_standard_compile_count; }
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static int get_sum_osr_bytes_compiled() { return _sum_osr_bytes_compiled; }
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static int get_sum_standard_bytes_compiled() { return _sum_standard_bytes_compiled; }
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static int get_sum_nmethod_size() { return _sum_nmethod_size;}
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static int get_sum_nmethod_code_size() { return _sum_nmethod_code_size; }
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static long get_peak_compilation_time() { return _peak_compilation_time; }
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static long get_total_compilation_time() { return _t_total_compilation.milliseconds(); }
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};
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#endif // SHARE_VM_COMPILER_COMPILEBROKER_HPP
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