37 // in debug.cpp (inside a debugger, such as gdb).
38 //
39 // The ClassPrinter::print_xxx() functions hold the ClassLoaderDataGraph_lock
40 // (and the ttyLocker if ClassPrinter::PRINT_BYTECODE is selected). A deadlock
41 // may happen if these functions are called in a context where these locks
42 // are already held. Use with caution.
43
44 class ClassPrinter : public AllStatic {
45 class KlassPrintClosure;
46
47 public:
48
49 enum Mode : int {
50 PRINT_METHOD_NAME = 1 << 0,
51 PRINT_BYTECODE = 1 << 1,
52 PRINT_BYTECODE_ADDR = 1 << 2,
53 PRINT_DYNAMIC = 1 << 3, // extra information for invokedynamic (and dynamic constant ...)
54 PRINT_METHOD_HANDLE = 1 << 4, // extra information for invokehandle
55 PRINT_CLASS_DETAILS = 1 << 5, // print details of the C++ and Java objects that represent classes
56 PRINT_METHOD_DETAILS = 1 << 6, // print details of the C++ objects that represent methods
57 };
58 static bool has_mode(int flags, Mode mode) {
59 return (flags & static_cast<int>(mode)) != 0;
60 }
61
62 static void print_flags_help(outputStream* os);
63
64 // Parameters for print_classes() and print_methods():
65 //
66 // - The patterns are matched by StringUtils::is_star_match()
67 // - class_name_pattern matches Klass::external_name(). E.g., "java/lang/Object" or "*ang/Object"
68 // - method_pattern may optionally include the signature. E.g., "wait", "wait:()V" or "*ai*t:(*)V"
69 // - flags must be OR'ed from ClassPrinter::Mode
70 //
71 // print_classes("java/lang/Object", 0x3, os) -> find j.l.Object and disasm all of its methods
72 // print_methods("*ang/Object*", "wait", 0xff, os) -> detailed disasm of all "wait" methods in j.l.Object
73 // print_methods("*ang/Object*", "wait:(*J*)V", 0x1, os) -> list all "wait" methods in j.l.Object that have a long parameter
74 static void print_classes(const char* class_name_pattern, int flags, outputStream* os);
75 static void print_methods(const char* class_name_pattern,
76 const char* method_pattern, int flags, outputStream* os);
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37 // in debug.cpp (inside a debugger, such as gdb).
38 //
39 // The ClassPrinter::print_xxx() functions hold the ClassLoaderDataGraph_lock
40 // (and the ttyLocker if ClassPrinter::PRINT_BYTECODE is selected). A deadlock
41 // may happen if these functions are called in a context where these locks
42 // are already held. Use with caution.
43
44 class ClassPrinter : public AllStatic {
45 class KlassPrintClosure;
46
47 public:
48
49 enum Mode : int {
50 PRINT_METHOD_NAME = 1 << 0,
51 PRINT_BYTECODE = 1 << 1,
52 PRINT_BYTECODE_ADDR = 1 << 2,
53 PRINT_DYNAMIC = 1 << 3, // extra information for invokedynamic (and dynamic constant ...)
54 PRINT_METHOD_HANDLE = 1 << 4, // extra information for invokehandle
55 PRINT_CLASS_DETAILS = 1 << 5, // print details of the C++ and Java objects that represent classes
56 PRINT_METHOD_DETAILS = 1 << 6, // print details of the C++ objects that represent methods
57 PRINT_PROFILE = 1 << 7, // print MDO contents
58 };
59 static bool has_mode(int flags, Mode mode) {
60 return (flags & static_cast<int>(mode)) != 0;
61 }
62
63 static void print_flags_help(outputStream* os);
64
65 // Parameters for print_classes() and print_methods():
66 //
67 // - The patterns are matched by StringUtils::is_star_match()
68 // - class_name_pattern matches Klass::external_name(). E.g., "java/lang/Object" or "*ang/Object"
69 // - method_pattern may optionally include the signature. E.g., "wait", "wait:()V" or "*ai*t:(*)V"
70 // - flags must be OR'ed from ClassPrinter::Mode
71 //
72 // print_classes("java/lang/Object", 0x3, os) -> find j.l.Object and disasm all of its methods
73 // print_methods("*ang/Object*", "wait", 0xff, os) -> detailed disasm of all "wait" methods in j.l.Object
74 // print_methods("*ang/Object*", "wait:(*J*)V", 0x1, os) -> list all "wait" methods in j.l.Object that have a long parameter
75 static void print_classes(const char* class_name_pattern, int flags, outputStream* os);
76 static void print_methods(const char* class_name_pattern,
77 const char* method_pattern, int flags, outputStream* os);
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