119 return (cause == GCCause::_allocation_failure ||
120 cause == GCCause::_adaptive_size_policy ||
121 cause == GCCause::_last_ditch_collection);
122 }
123
124 // Return a string describing the GCCause.
125 static const char* to_string(GCCause::Cause cause);
126 };
127
128 // Helper class for doing logging that includes the GC Cause
129 // as a string.
130 class GCCauseString : StackObj {
131 private:
132 static const int _length = 128;
133 char _buffer[_length];
134 int _position;
135
136 public:
137 GCCauseString(const char* prefix, GCCause::Cause cause) {
138 if (PrintGCCause) {
139 _position = jio_snprintf(_buffer, _length, "%s (%s) ", prefix, GCCause::to_string(cause));
140 } else {
141 _position = jio_snprintf(_buffer, _length, "%s ", prefix);
142 }
143 assert(_position >= 0 && _position <= _length,
144 "Need to increase the buffer size in GCCauseString? %d", _position);
145 }
146
147 GCCauseString& append(const char* str) {
148 int res = jio_snprintf(_buffer + _position, _length - _position, "%s", str);
149 _position += res;
150 assert(res >= 0 && _position <= _length,
151 "Need to increase the buffer size in GCCauseString? %d", res);
152 return *this;
153 }
154
155 operator const char*() {
156 return _buffer;
157 }
158 };
159
160 #endif // SHARE_VM_GC_SHARED_GCCAUSE_HPP
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119 return (cause == GCCause::_allocation_failure ||
120 cause == GCCause::_adaptive_size_policy ||
121 cause == GCCause::_last_ditch_collection);
122 }
123
124 // Return a string describing the GCCause.
125 static const char* to_string(GCCause::Cause cause);
126 };
127
128 // Helper class for doing logging that includes the GC Cause
129 // as a string.
130 class GCCauseString : StackObj {
131 private:
132 static const int _length = 128;
133 char _buffer[_length];
134 int _position;
135
136 public:
137 GCCauseString(const char* prefix, GCCause::Cause cause) {
138 if (PrintGCCause) {
139 _position = jio_snprintf(_buffer, _length, "%s (%s)", prefix, GCCause::to_string(cause));
140 } else {
141 _position = jio_snprintf(_buffer, _length, "%s", prefix);
142 }
143 assert(_position >= 0 && _position <= _length,
144 "Need to increase the buffer size in GCCauseString? %d", _position);
145 }
146
147 GCCauseString& append(const char* str) {
148 int res = jio_snprintf(_buffer + _position, _length - _position, "%s", str);
149 _position += res;
150 assert(res >= 0 && _position <= _length,
151 "Need to increase the buffer size in GCCauseString? %d", res);
152 return *this;
153 }
154
155 operator const char*() {
156 return _buffer;
157 }
158 };
159
160 #endif // SHARE_VM_GC_SHARED_GCCAUSE_HPP
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