1 // java-stack.h - Definitions for unwinding & inspecting the call stack.
3 /* Copyright (C) 2005, 2006 Free Software Foundation
5 This file is part of libgcj.
7 This software is copyrighted work licensed under the terms of the
8 Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
11 #ifndef __JV_STACKTRACE_H__
12 #define __JV_STACKTRACE_H__
18 #include <gcj/javaprims.h>
20 #include <java-interp.h>
22 #include <java/lang/Class.h>
23 #include <java/lang/StackTraceElement.h>
24 #include <java/lang/Throwable.h>
25 #include <java/lang/Thread.h>
26 #include <java/util/IdentityHashMap.h>
28 #include <gnu/gcj/runtime/NameFinder.h>
30 using namespace gnu::gcj::runtime
;
31 using namespace java::lang
;
45 struct _Jv_InterpFrameInfo
47 _Jv_InterpMethod
*meth
;
58 _Jv_FrameType type
; /* Native or interpreted. */
61 _Jv_InterpFrameInfo interp
;
65 _Jv_Method
*proxyMethod
;
72 // _Jv_FrameInfo info; /* Frame-type specific data. */
77 typedef struct _Jv_UnwindState
;
78 typedef _Unwind_Reason_Code (*_Jv_TraceFn
) (_Jv_UnwindState
*);
80 struct _Jv_UnwindState
82 jint length
; // length of FRAMES
83 jint pos
; // current position in FRAMES
84 _Jv_StackFrame
*frames
; // array of stack frame data to be filled.
86 _Jv_InterpFrame
*interp_frame
; // current frame in the interpreter stack.
88 _Jv_TraceFn trace_function
; // function to call back after each frame
89 // is enumerated. May be NULL.
90 void *trace_data
; // additional state data for trace_function.
92 _Jv_UnwindState (jint ln
)
98 Thread
*thread
= Thread::currentThread();
99 // Check for NULL currentThread(), in case an exception is created
100 // very early during the runtime startup.
102 interp_frame
= (_Jv_InterpFrame
*) thread
->interp_frame
;
106 trace_function
= NULL
;
115 _Jv_StackFrame frames
[];
117 static java::util::IdentityHashMap
*ncodeMap
;
118 static void UpdateNCodeMap ();
119 static jclass
ClassForFrame (_Jv_StackFrame
*frame
);
120 static void FillInFrameInfo (_Jv_StackFrame
*frame
);
121 static void getLineNumberForFrame(_Jv_StackFrame
*frame
, NameFinder
*finder
,
122 jstring
*sourceFileName
, jint
*lineNum
,
123 jstring
*methodName
);
125 static _Unwind_Reason_Code
UnwindTraceFn (struct _Unwind_Context
*context
,
128 static _Unwind_Reason_Code
calling_class_trace_fn (_Jv_UnwindState
*state
);
129 static _Unwind_Reason_Code
non_system_trace_fn (_Jv_UnwindState
*state
);
130 static _Unwind_Reason_Code
accesscontrol_trace_fn (_Jv_UnwindState
*state
);
131 static _Unwind_Reason_Code
stackwalker_trace_fn (_Jv_UnwindState
*state
);
132 static _Unwind_Reason_Code
stackwalker_nnl_trace_fn (_Jv_UnwindState
*state
);
135 static _Jv_StackTrace
*GetStackTrace (void);
136 static JArray
< ::java::lang::StackTraceElement
*>*
137 GetStackTraceElements (_Jv_StackTrace
*trace
,
138 java::lang::Throwable
*throwable
);
139 static jclass
GetCallingClass (jclass
);
140 static void GetCallerInfo (jclass checkClass
, jclass
*, _Jv_Method
**);
141 static ClassLoader
*GetFirstNonSystemClassLoader (void);
142 static jobjectArray
GetAccessControlStack ();
143 static JArray
<jclass
> *GetStackWalkerStack ();
144 static jclass
GetStackWalkerCallingClass ();
145 static ClassLoader
*GetStackWalkerFirstNonNullLoader ();
147 friend jclass
_Jv_GetMethodDeclaringClass (jmethodID
);
148 friend class gnu::classpath::VMStackWalker
;
151 // Information about a given address.
154 // File name of the defining module.
155 const char *file_name
;
157 // Base address of the loaded module.
160 // Name of the nearest symbol.
161 const char *sym_name
;
163 // Address of the nearest symbol.
168 // On systems with a real dladdr(), the file and symbol names given by
169 // _Jv_platform_dladdr() are not dynamically allocated. On Windows,
174 free ((void *)file_name
);
177 free ((void *)sym_name
);
182 #endif /* __JV_STACKTRACE_H__ */