1 /*
2 * Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_COMPILER_COMPILETASK_HPP
26 #define SHARE_VM_COMPILER_COMPILETASK_HPP
27
28 #include "code/nmethod.hpp"
29 #include "ci/ciMethod.hpp"
30 #include "compiler/compileLog.hpp"
31 #include "memory/allocation.inline.hpp"
32 #include "utilities/xmlstream.hpp"
33
34 // CompileTask
35 //
36 // An entry in the compile queue. It represents a pending or current
37 // compilation.
38
39 class CompileTask : public CHeapObj<mtCompiler> {
40 friend class VMStructs;
41 friend class JVMCIVMStructs;
42
43 private:
44 static CompileTask* _task_free_list;
45 #ifdef ASSERT
46 static int _num_allocated_tasks;
47 #endif
48
49 Monitor* _lock;
50 uint _compile_id;
51 Method* _method;
52 jobject _method_holder;
53 int _osr_bci;
54 bool _is_complete;
55 bool _is_success;
56 bool _is_blocking;
57 #if INCLUDE_JVMCI
58 bool _has_waiter;
59 // Compiler thread for a blocking JVMCI compilation
60 CompilerThread* _jvmci_compiler_thread;
61 #endif
62 int _comp_level;
63 int _num_inlined_bytecodes;
64 nmethodLocker* _code_handle; // holder of eventual result
65 CompileTask* _next, *_prev;
66 bool _is_free;
67 // Fields used for logging why the compilation was initiated:
68 jlong _time_queued; // in units of os::elapsed_counter()
69 Method* _hot_method; // which method actually triggered this task
70 jobject _hot_method_holder;
71 int _hot_count; // information about its invocation counter
72 const char* _comment; // more info about the task
73 const char* _failure_reason;
74
75 public:
76 CompileTask() {
77 _lock = new Monitor(Mutex::nonleaf+2, "CompileTaskLock");
78 }
79
80 void initialize(int compile_id, const methodHandle& method, int osr_bci, int comp_level,
81 const methodHandle& hot_method, int hot_count, const char* comment,
82 bool is_blocking);
83
84 static CompileTask* allocate();
85 static void free(CompileTask* task);
86
87 int compile_id() const { return _compile_id; }
88 Method* method() const { return _method; }
89 Method* hot_method() const { return _hot_method; }
90 int osr_bci() const { return _osr_bci; }
91 bool is_complete() const { return _is_complete; }
92 bool is_blocking() const { return _is_blocking; }
93 bool is_success() const { return _is_success; }
94 #if INCLUDE_JVMCI
95 bool has_waiter() const { return _has_waiter; }
96 void clear_waiter() { _has_waiter = false; }
97 CompilerThread* jvmci_compiler_thread() const { return _jvmci_compiler_thread; }
98 void set_jvmci_compiler_thread(CompilerThread* t) {
99 assert(is_blocking(), "must be");
100 assert((t == NULL) != (_jvmci_compiler_thread == NULL), "must be");
101 _jvmci_compiler_thread = t;
102 }
103 #endif
104
105 nmethodLocker* code_handle() const { return _code_handle; }
106 void set_code_handle(nmethodLocker* l) { _code_handle = l; }
107 nmethod* code() const; // _code_handle->code()
108 void set_code(nmethod* nm); // _code_handle->set_code(nm)
109
110 Monitor* lock() const { return _lock; }
111
112 void mark_complete() { _is_complete = true; }
113 void mark_success() { _is_success = true; }
114
115 int comp_level() { return _comp_level;}
116 void set_comp_level(int comp_level) { _comp_level = comp_level;}
117
118 AbstractCompiler* compiler();
119
120 int num_inlined_bytecodes() const { return _num_inlined_bytecodes; }
121 void set_num_inlined_bytecodes(int n) { _num_inlined_bytecodes = n; }
122
123 CompileTask* next() const { return _next; }
124 void set_next(CompileTask* next) { _next = next; }
125 CompileTask* prev() const { return _prev; }
126 void set_prev(CompileTask* prev) { _prev = prev; }
127 bool is_free() const { return _is_free; }
128 void set_is_free(bool val) { _is_free = val; }
129
130 // RedefineClasses support
131 void metadata_do(void f(Metadata*));
132 void mark_on_stack();
133
134 private:
135 static void print_impl(outputStream* st, Method* method, int compile_id, int comp_level,
136 bool is_osr_method = false, int osr_bci = -1, bool is_blocking = false,
137 const char* msg = NULL, bool short_form = false, bool cr = true);
138
139 public:
140 void print(outputStream* st = tty, const char* msg = NULL, bool short_form = false, bool cr = true);
141 static void print(outputStream* st, const nmethod* nm, const char* msg = NULL, bool short_form = false, bool cr = true) {
142 print_impl(st, nm->method(), nm->compile_id(), nm->comp_level(),
143 nm->is_osr_method(), nm->is_osr_method() ? nm->osr_entry_bci() : -1, /*is_blocking*/ false,
144 msg, short_form, cr);
145 }
146
147 static void print_inline_indent(int inline_level, outputStream* st = tty);
148
149 void print_tty();
150 void print_line_on_error(outputStream* st, char* buf, int buflen);
151
152 void log_task(xmlStream* log);
153 void log_task_queued();
154 void log_task_dequeued(const char* comment);
155 void log_task_start(CompileLog* log);
156 void log_task_done(CompileLog* log);
157
158 void set_failure_reason(const char* reason) {
159 _failure_reason = reason;
160 }
161
162 bool check_break_at_flags();
163
164 static void print_inlining_inner(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg = NULL);
165 static void print_inlining_tty(ciMethod* method, int inline_level, int bci, const char* msg = NULL) {
166 print_inlining_inner(tty, method, inline_level, bci, msg);
167 }
168 };
169
170 #endif // SHARE_VM_COMPILER_COMPILETASK_HPP