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/*
* Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef SHARE_VM_COMPILER_COMPILEBROKER_HPP
#define SHARE_VM_COMPILER_COMPILEBROKER_HPP
#include "ci/compilerInterface.hpp"
#include "compiler/abstractCompiler.hpp"
#include "runtime/perfData.hpp"
class nmethod;
class nmethodLocker;
// CompileTask
//
// An entry in the compile queue. It represents a pending or current
// compilation.
class CompileTask : public CHeapObj<mtCompiler> {
friend class VMStructs;
private:
Monitor* _lock;
uint _compile_id;
Method* _method;
jobject _method_loader;
int _osr_bci;
bool _is_complete;
bool _is_success;
bool _is_blocking;
int _comp_level;
int _num_inlined_bytecodes;
nmethodLocker* _code_handle; // holder of eventual result
CompileTask* _next, *_prev;
// Fields used for logging why the compilation was initiated:
jlong _time_queued; // in units of os::elapsed_counter()
Method* _hot_method; // which method actually triggered this task
jobject _hot_method_loader;
int _hot_count; // information about its invocation counter
const char* _comment; // more info about the task
public:
CompileTask() {
_lock = new Monitor(Mutex::nonleaf+2, "CompileTaskLock");
}
void initialize(int compile_id, methodHandle method, int osr_bci, int comp_level,
methodHandle hot_method, int hot_count, const char* comment,
bool is_blocking);
void free();
int compile_id() const { return _compile_id; }
Method* method() const { return _method; }
int osr_bci() const { return _osr_bci; }
bool is_complete() const { return _is_complete; }
bool is_blocking() const { return _is_blocking; }
bool is_success() const { return _is_success; }
nmethodLocker* code_handle() const { return _code_handle; }
void set_code_handle(nmethodLocker* l) { _code_handle = l; }
nmethod* code() const; // _code_handle->code()
void set_code(nmethod* nm); // _code_handle->set_code(nm)
Monitor* lock() const { return _lock; }
void mark_complete() { _is_complete = true; }
void mark_success() { _is_success = true; }
int comp_level() { return _comp_level;}
void set_comp_level(int comp_level) { _comp_level = comp_level;}
int num_inlined_bytecodes() const { return _num_inlined_bytecodes; }
void set_num_inlined_bytecodes(int n) { _num_inlined_bytecodes = n; }
CompileTask* next() const { return _next; }
void set_next(CompileTask* next) { _next = next; }
CompileTask* prev() const { return _prev; }
void set_prev(CompileTask* prev) { _prev = prev; }
private:
static void print_compilation_impl(outputStream* st, Method* method, int compile_id, int comp_level,
bool is_osr_method = false, int osr_bci = -1, bool is_blocking = false,
const char* msg = NULL, bool short_form = false);
public:
void print_compilation(outputStream* st = tty, bool short_form = false);
static void print_compilation(outputStream* st, const nmethod* nm, const char* msg = NULL, bool short_form = false) {
print_compilation_impl(st, nm->method(), nm->compile_id(), nm->comp_level(),
nm->is_osr_method(), nm->is_osr_method() ? nm->osr_entry_bci() : -1, /*is_blocking*/ false,
msg, short_form);
}
static void print_inlining(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg = NULL);
static void print_inlining(ciMethod* method, int inline_level, int bci, const char* msg = NULL) {
print_inlining(tty, method, inline_level, bci, msg);
}
// Redefine Classes support
void mark_on_stack();
static void print_inline_indent(int inline_level, outputStream* st = tty);
void print();
void print_line();
void print_line_on_error(outputStream* st, char* buf, int buflen);
void log_task(xmlStream* log);
void log_task_queued();
void log_task_start(CompileLog* log);
void log_task_done(CompileLog* log);
};
// CompilerCounters
//
// Per Compiler Performance Counters.
//
class CompilerCounters : public CHeapObj<mtCompiler> {
public:
enum {
cmname_buffer_length = 160
};
private:
char _current_method[cmname_buffer_length];
PerfStringVariable* _perf_current_method;
int _compile_type;
PerfVariable* _perf_compile_type;
PerfCounter* _perf_time;
PerfCounter* _perf_compiles;
public:
CompilerCounters(const char* name, int instance, TRAPS);
// these methods should be called in a thread safe context
void set_current_method(const char* method) {
strncpy(_current_method, method, (size_t)cmname_buffer_length);
if (UsePerfData) _perf_current_method->set_value(method);
}
char* current_method() { return _current_method; }
void set_compile_type(int compile_type) {
_compile_type = compile_type;
if (UsePerfData) _perf_compile_type->set_value((jlong)compile_type);
}
int compile_type() { return _compile_type; }
PerfCounter* time_counter() { return _perf_time; }
PerfCounter* compile_counter() { return _perf_compiles; }
};
// CompileQueue
//
// A list of CompileTasks.
class CompileQueue : public CHeapObj<mtCompiler> {
private:
const char* _name;
Monitor* _lock;
CompileTask* _first;
CompileTask* _last;
int _size;
public:
CompileQueue(const char* name, Monitor* lock) {
_name = name;
_lock = lock;
_first = NULL;
_last = NULL;
_size = 0;
}
const char* name() const { return _name; }
Monitor* lock() const { return _lock; }
void add(CompileTask* task);
void remove(CompileTask* task);
CompileTask* first() { return _first; }
CompileTask* last() { return _last; }
CompileTask* get();
bool is_empty() const { return _first == NULL; }
int size() const { return _size; }
// Redefine Classes support
void mark_on_stack();
void print();
};
// CompileTaskWrapper
//
// Assign this task to the current thread. Deallocate the task
// when the compilation is complete.
class CompileTaskWrapper : StackObj {
public:
CompileTaskWrapper(CompileTask* task);
~CompileTaskWrapper();
};
// Compilation
//
// The broker for all compilation requests.
class CompileBroker: AllStatic {
friend class Threads;
friend class CompileTaskWrapper;
public:
enum {
name_buffer_length = 100
};
// Compile type Information for print_last_compile() and CompilerCounters
enum { no_compile, normal_compile, osr_compile, native_compile };
private:
static bool _initialized;
static volatile bool _should_block;
// This flag can be used to stop compilation or turn it back on
static volatile jint _should_compile_new_jobs;
// The installed compiler(s)
static AbstractCompiler* _compilers[2];
// These counters are used for assigning id's to each compilation
static uint _compilation_id;
static uint _osr_compilation_id;
static uint _native_compilation_id;
static int _last_compile_type;
static int _last_compile_level;
static char _last_method_compiled[name_buffer_length];
static CompileQueue* _c2_method_queue;
static CompileQueue* _c1_method_queue;
static CompileTask* _task_free_list;
static GrowableArray<CompilerThread*>* _method_threads;
// performance counters
static PerfCounter* _perf_total_compilation;
static PerfCounter* _perf_native_compilation;
static PerfCounter* _perf_osr_compilation;
static PerfCounter* _perf_standard_compilation;
static PerfCounter* _perf_total_bailout_count;
static PerfCounter* _perf_total_invalidated_count;
static PerfCounter* _perf_total_compile_count;
static PerfCounter* _perf_total_native_compile_count;
static PerfCounter* _perf_total_osr_compile_count;
static PerfCounter* _perf_total_standard_compile_count;
static PerfCounter* _perf_sum_osr_bytes_compiled;
static PerfCounter* _perf_sum_standard_bytes_compiled;
static PerfCounter* _perf_sum_nmethod_size;
static PerfCounter* _perf_sum_nmethod_code_size;
static PerfStringVariable* _perf_last_method;
static PerfStringVariable* _perf_last_failed_method;
static PerfStringVariable* _perf_last_invalidated_method;
static PerfVariable* _perf_last_compile_type;
static PerfVariable* _perf_last_compile_size;
static PerfVariable* _perf_last_failed_type;
static PerfVariable* _perf_last_invalidated_type;
// Timers and counters for generating statistics
static elapsedTimer _t_total_compilation;
static elapsedTimer _t_osr_compilation;
static elapsedTimer _t_standard_compilation;
static int _total_bailout_count;
static int _total_invalidated_count;
static int _total_compile_count;
static int _total_native_compile_count;
static int _total_osr_compile_count;
static int _total_standard_compile_count;
static int _sum_osr_bytes_compiled;
static int _sum_standard_bytes_compiled;
static int _sum_nmethod_size;
static int _sum_nmethod_code_size;
static CompilerThread* make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS);
static void init_compiler_threads(int c1_compiler_count, int c2_compiler_count);
static bool compilation_is_complete (methodHandle method, int osr_bci, int comp_level);
static bool compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level);
static uint assign_compile_id (methodHandle method, int osr_bci);
static bool is_compile_blocking (methodHandle method, int osr_bci);
static void preload_classes (methodHandle method, TRAPS);
static CompileTask* create_compile_task(CompileQueue* queue,
int compile_id,
methodHandle method,
int osr_bci,
int comp_level,
methodHandle hot_method,
int hot_count,
const char* comment,
bool blocking);
static CompileTask* allocate_task();
static void free_task(CompileTask* task);
static void wait_for_completion(CompileTask* task);
static void invoke_compiler_on_method(CompileTask* task);
static void set_last_compile(CompilerThread *thread, methodHandle method, bool is_osr, int comp_level);
static void push_jni_handle_block();
static void pop_jni_handle_block();
static bool check_break_at(methodHandle method, int compile_id, bool is_osr);
static void collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task);
static void compile_method_base(methodHandle method,
int osr_bci,
int comp_level,
methodHandle hot_method,
int hot_count,
const char* comment,
Thread* thread);
static CompileQueue* compile_queue(int comp_level) {
if (is_c2_compile(comp_level)) return _c2_method_queue;
if (is_c1_compile(comp_level)) return _c1_method_queue;
return NULL;
}
public:
enum {
// The entry bci used for non-OSR compilations.
standard_entry_bci = InvocationEntryBci
};
static AbstractCompiler* compiler(int comp_level) {
if (is_c2_compile(comp_level)) return _compilers[1]; // C2
if (is_c1_compile(comp_level)) return _compilers[0]; // C1
return NULL;
}
static bool compilation_is_in_queue(methodHandle method, int osr_bci);
static int queue_size(int comp_level) {
CompileQueue *q = compile_queue(comp_level);
return q != NULL ? q->size() : 0;
}
static void compilation_init();
static void init_compiler_thread_log();
static nmethod* compile_method(methodHandle method,
int osr_bci,
int comp_level,
methodHandle hot_method,
int hot_count,
const char* comment, Thread* thread);
static void compiler_thread_loop();
static uint get_compilation_id() { return _compilation_id; }
static bool is_idle();
// Set _should_block.
// Call this from the VM, with Threads_lock held and a safepoint requested.
static void set_should_block();
// Call this from the compiler at convenient points, to poll for _should_block.
static void maybe_block();
enum {
// Flags for toggling compiler activity
stop_compilation = 0,
run_compilation = 1
};
static bool should_compile_new_jobs() { return UseCompiler && (_should_compile_new_jobs == run_compilation); }
static bool set_should_compile_new_jobs(jint new_state) {
// Return success if the current caller set it
jint old = Atomic::cmpxchg(new_state, &_should_compile_new_jobs, 1-new_state);
return (old == (1-new_state));
}
static void handle_full_code_cache();
// Return total compilation ticks
static jlong total_compilation_ticks() {
return _perf_total_compilation != NULL ? _perf_total_compilation->get_value() : 0;
}
// Redefine Classes support
static void mark_on_stack();
// Print a detailed accounting of compilation time
static void print_times();
// Debugging output for failure
static void print_last_compile();
static void print_compiler_threads_on(outputStream* st);
};
#endif // SHARE_VM_COMPILER_COMPILEBROKER_HPP
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