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comparison src/share/vm/utilities/debug.hpp @ 6268:6c5b7a6becc8

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7187454: stack overflow in C2 compiler thread on Solaris x86 Summary: Added new FormatBufferResource class to use thread's resource area for error message buffer. Reviewed-by: twisti
author kvn
date Mon, 30 Jul 2012 09:49:25 -0700
parents aa3d708d67c4
children da91efe96a93
comparison
equal deleted inserted replaced
6267:977007096840 6268:6c5b7a6becc8
29 #include "utilities/globalDefinitions.hpp" 29 #include "utilities/globalDefinitions.hpp"
30 30
31 #include <stdarg.h> 31 #include <stdarg.h>
32 32
33 // Simple class to format the ctor arguments into a fixed-sized buffer. 33 // Simple class to format the ctor arguments into a fixed-sized buffer.
34 class FormatBufferBase {
35 protected:
36 char* _buf;
37 inline FormatBufferBase(char* buf) : _buf(buf) {}
38 public:
39 operator const char *() const { return _buf; }
40 };
41
42 // Use resource area for buffer
43 #define RES_BUFSZ 256
44 class FormatBufferResource : public FormatBufferBase {
45 public:
46 FormatBufferResource(const char * format, ...);
47 };
48
49 // Use stack for buffer
34 template <size_t bufsz = 256> 50 template <size_t bufsz = 256>
35 class FormatBuffer { 51 class FormatBuffer : public FormatBufferBase {
36 public: 52 public:
37 inline FormatBuffer(const char * format, ...); 53 inline FormatBuffer(const char * format, ...);
38 inline void append(const char* format, ...); 54 inline void append(const char* format, ...);
39 inline void print(const char* format, ...); 55 inline void print(const char* format, ...);
40 inline void printv(const char* format, va_list ap); 56 inline void printv(const char* format, va_list ap);
41 operator const char *() const { return _buf; }
42 57
43 char* buffer() { return _buf; } 58 char* buffer() { return _buf; }
44 int size() { return bufsz; } 59 int size() { return bufsz; }
45 60
46 private: 61 private:
47 FormatBuffer(const FormatBuffer &); // prevent copies 62 FormatBuffer(const FormatBuffer &); // prevent copies
63 char _buffer[bufsz];
48 64
49 protected: 65 protected:
50 char _buf[bufsz];
51
52 inline FormatBuffer(); 66 inline FormatBuffer();
53 }; 67 };
54 68
55 template <size_t bufsz> 69 template <size_t bufsz>
56 FormatBuffer<bufsz>::FormatBuffer(const char * format, ...) { 70 FormatBuffer<bufsz>::FormatBuffer(const char * format, ...) : FormatBufferBase(_buffer) {
57 va_list argp; 71 va_list argp;
58 va_start(argp, format); 72 va_start(argp, format);
59 jio_vsnprintf(_buf, bufsz, format, argp); 73 jio_vsnprintf(_buf, bufsz, format, argp);
60 va_end(argp); 74 va_end(argp);
61 } 75 }
62 76
63 template <size_t bufsz> 77 template <size_t bufsz>
64 FormatBuffer<bufsz>::FormatBuffer() { 78 FormatBuffer<bufsz>::FormatBuffer() : FormatBufferBase(_buffer) {
65 _buf[0] = '\0'; 79 _buf[0] = '\0';
66 } 80 }
67 81
68 template <size_t bufsz> 82 template <size_t bufsz>
69 void FormatBuffer<bufsz>::print(const char * format, ...) { 83 void FormatBuffer<bufsz>::print(const char * format, ...) {
91 va_end(argp); 105 va_end(argp);
92 } 106 }
93 107
94 // Used to format messages for assert(), guarantee(), fatal(), etc. 108 // Used to format messages for assert(), guarantee(), fatal(), etc.
95 typedef FormatBuffer<> err_msg; 109 typedef FormatBuffer<> err_msg;
110 typedef FormatBufferResource err_msg_res;
96 111
97 // assertions 112 // assertions
98 #ifdef ASSERT 113 #ifdef ASSERT
99 #ifndef USE_REPEATED_ASSERTS 114 #ifndef USE_REPEATED_ASSERTS
100 #define assert(p, msg) \ 115 #define assert(p, msg) \